/* ==========================================================================
   STYLEHUB - COMPLETE DESIGN SYSTEM
   Theme: Modern Luxury & Performance (Green, White, Grey, Black)
   No inline styles allowed. All styling defined in this stylesheet.
   ========================================================================== */

:root {
    /* Brand Green Palette */
    --color-green-50:  #f0fdf4;
    --color-green-100: #dcfce7;
    --color-green-200: #bbf7d0;
    --color-green-500: #22c55e;
    --color-green-600: #16a34a;
    --color-green-700: #15803d;
    --color-green-800: #166534;
    --color-green-900: #14532d;
    --color-green-950: #052e16;

    /* Neutrals: White, Grey, Slate Black */
    --color-white:     #ffffff;
    --color-grey-50:   #f8fafc;
    --color-grey-100:  #f1f5f9;
    --color-grey-200:  #e2e8f0;
    --color-grey-300:  #cbd5e1;
    --color-grey-400:  #94a3b8;
    --color-grey-500:  #64748b;
    --color-grey-600:  #475569;
    --color-grey-700:  #334155;
    --color-grey-800:  #1e293b;
    --color-grey-900:  #0f172a;
    --color-black:     #050811;

    /* Semantic Mappings */
    --primary:         var(--color-green-700);
    --primary-hover:   var(--color-green-800);
    --primary-light:   var(--color-green-50);
    --primary-border:  var(--color-green-200);
    --accent:          var(--color-green-500);

    --bg-main:         var(--color-grey-50);
    --bg-surface:      var(--color-white);
    --bg-alt:          var(--color-grey-100);

    --text-primary:    var(--color-grey-900);
    --text-secondary:  var(--color-grey-600);
    --text-muted:      var(--color-grey-400);
    --text-inverse:    var(--color-white);

    --border-light:    var(--color-grey-200);
    --border-medium:   var(--color-grey-300);
    --border-dark:     var(--color-grey-700);

    --danger:          #dc2626;
    --danger-bg:       #fef2f2;
    --warning:         #d97706;
    --warning-bg:      #fffbeb;
    --success:         var(--color-green-700);
    --success-bg:      var(--color-green-50);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Elevation & Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.06);

    /* Layout & Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    --max-width: 1320px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main {
    flex: 1 0 auto;
}

img, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary);
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

ul, ol {
    list-style: none;
}

/* ==========================================================================
   LAYOUT CONTAINERS & GRIDS
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.container-narrow {
    max-width: 760px;
}

.container-fluid {
    width: 100%;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }

.is-hidden { display: none !important; }

/* ==========================================================================
   PUBLIC NAVIGATION & HEADER
   Strictly no admin dashboard link in public nav!
   ========================================================================== */
.site-header {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-xs);
}

.top-bar {
    background-color: var(--color-grey-900);
    color: var(--color-grey-300);
    font-size: 0.8125rem;
    padding: 0.4rem 0;
    text-align: center;
    letter-spacing: 0.025em;
}

.top-bar-highlight {
    color: var(--color-green-200);
    font-weight: 600;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--color-grey-900);
}

.brand-logo:hover {
    color: var(--color-grey-900);
}

.brand-badge {
    background-color: var(--primary);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    letter-spacing: 0.05em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--primary);
    border-radius: var(--radius-full);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-action-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.nav-action-btn:hover {
    background-color: var(--bg-alt);
    color: var(--primary);
}

.badge-count {
    background-color: var(--primary);
    color: var(--color-white);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.15rem 0.45rem;
    border-radius: var(--radius-full);
    min-width: 1.25rem;
    text-align: center;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6875rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    line-height: 1.25;
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background-color: var(--color-grey-900);
    color: var(--color-white);
}

.btn-secondary:hover {
    background-color: var(--color-black);
    color: var(--color-white);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--border-medium);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: var(--bg-alt);
    border-color: var(--border-dark);
}

.btn-sm {
    padding: 0.4375rem 0.875rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1.0625rem;
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn:disabled,
.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* ==========================================================================
   FORMS & INPUTS
   ========================================================================== */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-grey-800);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.6875rem 0.875rem;
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    background-color: var(--bg-surface);
    color: var(--text-primary);
    font-size: 0.9375rem;
    transition: var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(21, 128, 61, 0.15);
}

.form-hint {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   CARDS & SURFACES
   ========================================================================== */
.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
    overflow: hidden;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-grey-900);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border-light);
    background-color: var(--bg-alt);
}

/* ==========================================================================
   BADGES & STATUS
   ========================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

.badge-primary,
.badge-success {
    background-color: var(--color-green-100);
    color: var(--color-green-900);
    border: 1px solid var(--color-green-200);
}

.badge-low-stock,
.badge-warning {
    background-color: var(--warning-bg);
    color: var(--warning);
    border: 1px solid #fde68a;
}

.badge-danger {
    background-color: var(--danger-bg);
    color: var(--danger);
    border: 1px solid #fecaca;
}

.badge-info {
    background-color: var(--color-grey-100);
    color: var(--color-grey-800);
    border: 1px solid var(--border-light);
}

.badge-dark {
    background-color: var(--color-grey-900);
    color: var(--color-white);
}

/* ==========================================================================
   ALERTS
   ========================================================================== */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 1.25rem;
}

.alert-error {
    background-color: var(--danger-bg);
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background-color: var(--success-bg);
    color: var(--color-green-900);
    border: 1px solid var(--color-green-200);
}

.alert-warning {
    background-color: var(--warning-bg);
    color: #92400e;
    border: 1px solid #fde68a;
}

/* ==========================================================================
   SKELETON LOADERS
   Pulse effect while product cards / dashboard cards load
   ========================================================================== */
.skeleton-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.skeleton-media {
    width: 100%;
    aspect-ratio: 1 / 1.15;
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    border-radius: var(--radius-md);
    animation: skeleton-pulse 1.5s infinite ease-in-out;
}

.skeleton-line {
    height: 1rem;
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    border-radius: var(--radius-sm);
    animation: skeleton-pulse 1.5s infinite ease-in-out;
}

.skeleton-title {
    width: 70%;
    height: 1.2rem;
}

.skeleton-meta {
    width: 45%;
    height: 0.9rem;
}

.skeleton-price {
    width: 30%;
    height: 1.2rem;
}

.skeleton-stat {
    padding: 1.5rem;
}

.skeleton-metric {
    width: 50%;
    height: 2.2rem;
    margin: 0.5rem 0;
}

.skeleton-sub {
    width: 80%;
    height: 0.85rem;
}

@keyframes skeleton-pulse {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ==========================================================================
   EMPTY STATES
   ========================================================================== */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background-color: var(--bg-surface);
    border: 1px dashed var(--border-medium);
    border-radius: var(--radius-xl);
    max-width: 560px;
    margin: 2rem auto;
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--color-grey-400);
}

.empty-state-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-grey-900);
    margin-bottom: 0.5rem;
}

.empty-state-text {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
}

/* ==========================================================================
   AUTHENTICATION PAGES (LOGIN & REGISTER)
   ========================================================================== */
.auth-page-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 1.5rem;
    min-height: calc(100vh - 180px);
}

.auth-card {
    width: 100%;
    max-width: 460px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow-lg);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-title {
    font-size: 1.625rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--color-grey-900);
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.auth-footer {
    margin-top: 1.75rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-light);
    padding-top: 1.25rem;
}

.link-primary {
    color: var(--primary);
    font-weight: 600;
}

.link-primary:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.link-subtle {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.link-subtle:hover {
    color: var(--text-primary);
}

/* ==========================================================================
   ERROR PAGES (403, 404, 500)
   ========================================================================== */
.error-page-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
    padding: 2rem 1.5rem;
    text-align: center;
}

.error-card {
    max-width: 540px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 3.5rem 2.5rem;
    box-shadow: var(--shadow-lg);
}

.error-code {
    font-size: 5.5rem;
    font-weight: 900;
    line-height: 1;
    letter-spacing: -0.05em;
    color: var(--primary);
    margin-bottom: 1rem;
}

.error-code-danger {
    color: var(--danger);
}

.error-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-grey-900);
    margin-bottom: 0.75rem;
}

.error-description {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.error-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ==========================================================================
   ADMIN LAYOUT & DASHBOARD
   Strictly guarded by session auth
   ========================================================================== */
.admin-auth-body {
    background-color: var(--color-grey-900);
    color: var(--color-white);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.admin-auth-wrapper {
    width: 100%;
    max-width: 440px;
}

.admin-auth-card {
    background-color: var(--bg-surface);
    color: var(--text-primary);
    border-radius: var(--radius-xl);
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow-xl);
}

.admin-auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.admin-brand-badge {
    display: inline-block;
    background-color: var(--color-grey-900);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.admin-auth-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-grey-900);
    margin-bottom: 0.35rem;
}

.admin-auth-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.admin-auth-footer {
    margin-top: 1.5rem;
    text-align: center;
}

.admin-body {
    background-color: var(--bg-main);
    min-height: 100vh;
}

.admin-header {
    background-color: var(--color-grey-900);
    color: var(--color-white);
    height: 64px;
    border-bottom: 1px solid var(--color-grey-800);
}

.admin-header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 1.5rem;
}

.admin-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.admin-logo-mark {
    background-color: var(--primary);
    color: var(--color-white);
    font-weight: 800;
    font-size: 0.9rem;
    padding: 0.3rem 0.5rem;
    border-radius: var(--radius-sm);
}

.admin-title {
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.01em;
}

.admin-user-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.admin-role-tag {
    background-color: var(--primary);
    color: var(--color-white);
    font-size: 0.7rem;
    font-weight: 800;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    letter-spacing: 0.05em;
}

.admin-username {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-grey-300);
}

.admin-layout {
    display: flex;
    min-height: calc(100vh - 64px);
}

.admin-sidebar {
    width: 250px;
    background-color: var(--bg-surface);
    border-right: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    flex-shrink: 0;
}

.admin-nav {
    padding: 1.5rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.admin-nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.875rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.admin-nav-item:hover,
.admin-nav-item.active {
    background-color: var(--primary-light);
    color: var(--primary);
}

.admin-nav-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.admin-sidebar-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border-light);
}

.system-status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-online {
    background-color: var(--color-green-500);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

.admin-main {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

.admin-page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-grey-900);
    letter-spacing: -0.02em;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-top: 0.25rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-xs);
}

.stat-card-warning {
    border-color: #fde68a;
    background-color: #fffdf5;
}

.stat-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.stat-value {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--color-grey-900);
    line-height: 1.2;
}

.stat-meta {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.35rem;
}

.security-checklist {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.security-check-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.9375rem;
}

.check-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    background-color: var(--color-green-100);
    color: var(--color-green-800);
    border-radius: 50%;
    font-weight: 800;
    font-size: 0.8rem;
    flex-shrink: 0;
    margin-top: 0.15rem;
}

/* ==========================================================================
   ADMIN MANAGEMENT SYSTEM (PHASE 4)
   ========================================================================== */
.admin-tab-pane {
    display: none;
}

.admin-tab-pane.active {
    display: block;
    animation: fadeIn 0.2s ease-in-out;
}

.admin-tabs-nav {
    display: flex;
    gap: 0.5rem;
    border-bottom: 2px solid var(--border-light);
    margin-bottom: 1.5rem;
    overflow-x: auto;
    padding-bottom: 2px;
}

.admin-tab-btn {
    background: none;
    border: none;
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
    transition: all 0.15s ease-in-out;
}

.admin-tab-btn:hover {
    color: var(--primary);
}

.admin-tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.admin-stats-grid-13 {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.stat-card-danger {
    border-color: #fecaca;
    background-color: #fff5f5;
}

.stat-card-danger .stat-value {
    color: #b91c1c;
}

.stat-card-info {
    border-color: #bfdbfe;
    background-color: #eff6ff;
}

.stat-card-info .stat-value {
    color: #1d4ed8;
}

.stat-card-success {
    border-color: #bbf7d0;
    background-color: #f0fdf4;
}

.stat-card-success .stat-value {
    color: var(--primary);
}

.badge-info {
    background-color: #eff6ff;
    color: #1d4ed8;
    border: 1px solid #bfdbfe;
}

.badge-danger {
    background-color: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

.admin-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    background-color: var(--bg-surface);
    padding: 1rem 1.25rem;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
}

.admin-toolbar-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    flex: 1;
}

.admin-search-input {
    min-width: 240px;
    padding: 0.5rem 0.85rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    background-color: var(--bg-main);
}

.admin-select {
    padding: 0.5rem 0.85rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    background-color: var(--bg-main);
    color: var(--text-main);
}

.admin-filter-pills {
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.filter-pill {
    background-color: var(--bg-main);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    padding: 0.35rem 0.85rem;
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease-in-out;
}

.filter-pill:hover,
.filter-pill.active {
    background-color: var(--primary);
    color: var(--color-white);
    border-color: var(--primary);
}

.admin-table-container {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    box-shadow: var(--shadow-xs);
    margin-bottom: 1.5rem;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.875rem;
}

.admin-table th {
    background-color: #f1f5f9;
    color: var(--color-grey-700);
    padding: 0.85rem 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-light);
    white-space: nowrap;
}

.admin-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
    color: var(--text-main);
}

.admin-table tbody tr:hover {
    background-color: #f8fafc;
}

.admin-thumb {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    background-color: var(--border-light);
    border: 1px solid var(--border-color);
    display: block;
}

.admin-product-cell {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.admin-product-info {
    display: flex;
    flex-direction: column;
}

.admin-product-name {
    font-weight: 600;
    color: var(--color-grey-900);
}

.admin-product-sub {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.admin-stock-num {
    font-weight: 700;
    font-size: 0.95rem;
}

.admin-actions-cell {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    white-space: nowrap;
}

.btn-action {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.35rem 0.65rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid var(--border-color);
    background-color: var(--bg-surface);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.15s ease-in-out;
}

.btn-action:hover {
    background-color: var(--bg-main);
    color: var(--text-main);
    border-color: var(--color-grey-400);
}

.btn-action-primary {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-action-primary:hover {
    background-color: var(--primary);
    color: var(--color-white);
}

.btn-action-danger {
    border-color: #ef4444;
    color: #ef4444;
}

.btn-action-danger:hover {
    background-color: #ef4444;
    color: var(--color-white);
}

.badge-in-stock {
    background-color: var(--color-green-100);
    color: var(--color-green-800);
    border: 1px solid #86efac;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
}

.badge-low-stock {
    background-color: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
}

.badge-out-of-stock {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
}

.badge-status {
    padding: 0.2rem 0.55rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    display: inline-block;
}

.badge-pending {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-in-queue {
    background-color: #e0e7ff;
    color: #3730a3;
}

.badge-dispatched {
    background-color: #f3e8ff;
    color: #6b21a8;
}

.badge-delivered {
    background-color: #dcfce7;
    color: #166534;
}

.badge-returned {
    background-color: #fee2e2;
    color: #991b1b;
}

.badge-active {
    background-color: #dcfce7;
    color: #166534;
}

.badge-inactive {
    background-color: #fee2e2;
    color: #991b1b;
}

.manual-message-chip {
    display: inline-block;
    background-color: #f1f5f9;
    color: var(--color-grey-800);
    padding: 0.2rem 0.45rem;
    border-radius: var(--radius-sm);
    font-size: 0.72rem;
    font-style: italic;
    border: 1px dashed var(--border-color);
}

/* Admin Modal Overlay */
.admin-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(3px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1.5rem;
}

.admin-modal-overlay.is-hidden {
    display: none;
}

.admin-modal-container {
    background-color: var(--bg-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 620px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: modalPop 0.2s ease-out;
}

.admin-modal-container.modal-lg {
    max-width: 840px;
}

@keyframes modalPop {
    from {
        opacity: 0;
        transform: scale(0.96);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.admin-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    background-color: #f8fafc;
}

.admin-modal-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-grey-900);
}

.admin-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
    padding: 0.2rem 0.4rem;
}

.admin-modal-close:hover {
    color: var(--color-grey-900);
}

.admin-modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

.admin-modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-light);
    background-color: #f8fafc;
}

.form-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-help {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.admin-dossier-card {
    background-color: #f8fafc;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: 1rem;
}

.admin-dossier-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-grey-800);
    margin-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 0.35rem;
}

.colour-pill-preview {
    display: inline-block;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, 0.2);
    vertical-align: middle;
    margin-right: 0.35rem;
}

/* ==========================================================================
   CHECKOUT & CART PROGRESS STEPPER
   ========================================================================== */
.checkout-stepper-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 640px;
    margin: 0 auto 2.5rem;
    padding: 1rem 1.5rem;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

.checkout-step {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--color-grey-500);
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
}

.checkout-step.active {
    color: var(--primary-dark);
    font-weight: 700;
}

.checkout-step.completed {
    color: var(--primary);
    font-weight: 600;
}

.checkout-step .step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 700;
    background-color: var(--color-grey-100);
    color: var(--color-grey-600);
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.checkout-step.active .step-num {
    background-color: var(--primary);
    color: var(--color-white);
    border-color: var(--primary);
}

.checkout-step.completed .step-num {
    background-color: var(--primary-subtle);
    color: var(--primary-dark);
    border-color: var(--primary-light);
}

.checkout-step-divider {
    flex: 1;
    height: 2px;
    background-color: var(--border-light);
    margin: 0 1rem;
    min-width: 24px;
}

/* ==========================================================================
   CART & CHECKOUT (PHASE 3)
   ========================================================================== */
.cart-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 2.5rem;
    align-items: start;
}

.cart-table-wrapper {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.cart-item-row {
    display: grid;
    grid-template-columns: 90px 1fr auto auto auto;
    align-items: center;
    gap: 1.25rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
}

.cart-item-row:last-child {
    border-bottom: none;
}

.cart-item-img {
    width: 90px;
    height: 100px;
    object-fit: cover;
    border-radius: var(--radius-md);
    background-color: var(--color-grey-100);
}

.cart-item-details {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.cart-item-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-grey-900);
}

.cart-item-meta {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.quantity-stepper {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    background-color: var(--bg-surface);
    overflow: hidden;
}

.stepper-btn {
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: var(--transition);
}

.stepper-btn:hover {
    background-color: var(--bg-alt);
    color: var(--primary);
}

.stepper-val {
    width: 36px;
    text-align: center;
    font-size: 0.9375rem;
    font-weight: 600;
}

.cart-summary-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-xs);
    position: sticky;
    top: 90px;
}

.summary-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-grey-900);
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-light);
}

.summary-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.summary-row.total-row {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-grey-900);
    padding-top: 1rem;
    margin-top: 1rem;
    border-top: 1px solid var(--border-light);
}

.shipping-free-notice {
    font-size: 0.8125rem;
    color: var(--primary);
    font-weight: 600;
    background-color: var(--color-green-50);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

/* ==========================================================================
   ORDER TRACKING TIMELINE (PHASE 3)
   Showing: Pending -> In Queue -> Dispatched -> Delivered -> Returned
   ========================================================================== */
.tracking-timeline-wrapper {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2.5rem 2rem;
    margin: 2rem 0;
}

.tracking-timeline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.tracking-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 2;
    flex: 1;
}

.step-node {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--bg-surface);
    border: 3px solid var(--border-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.9375rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.tracking-step.completed .step-node {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--color-white);
}

.tracking-step.current .step-node {
    background-color: var(--bg-surface);
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 0 0 4px var(--color-green-100);
}

.step-title {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-grey-800);
    margin-top: 0.75rem;
    text-align: center;
}

.step-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

.timeline-connector {
    position: absolute;
    top: 22px;
    left: 10%;
    right: 10%;
    height: 3px;
    background-color: var(--border-medium);
    z-index: 1;
}

.timeline-connector-progress {
    height: 100%;
    background-color: var(--primary);
    transition: width 0.4s ease;
}

.timeline-connector-progress.progress-step-1 {
    width: 12%;
}

.timeline-connector-progress.progress-step-2 {
    width: 37%;
}

.timeline-connector-progress.progress-step-3 {
    width: 68%;
}

.timeline-connector-progress.progress-step-4 {
    width: 100%;
}

/* ==========================================================================
   CUSTOMER ADDRESS CARDS & GRID
   ========================================================================== */
.address-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.address-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    transition: var(--transition);
}

.address-card:hover {
    border-color: var(--border-dark);
}

.address-card.default-address {
    border-color: var(--color-green-500);
    background-color: #fafdfb;
}

.address-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.address-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-grey-900);
}

.address-text {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.address-actions-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-light);
}

/* Modal styling for adding address / returns without inline CSS */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    z-index: 2000;
    backdrop-filter: blur(4px);
}

.modal-card {
    background-color: var(--bg-surface);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 520px;
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    max-height: 90vh;
    overflow-y: auto;
}

.demo-payment-pill {
    background-color: var(--color-green-100);
    border: 1px solid var(--color-green-300);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

/* Responsive updates for Phase 3 */
@media (max-width: 1024px) {
    .cart-layout {
        grid-template-columns: 1fr;
    }
    .cart-summary-card {
        position: static;
    }
}

@media (max-width: 768px) {
    .cart-item-row {
        grid-template-columns: 80px 1fr;
        grid-template-areas:
            "img details"
            "qty total"
            "remove remove";
        gap: 0.75rem;
    }
    .tracking-timeline {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }
    .timeline-connector {
        top: 20px;
        bottom: 20px;
        left: 22px;
        width: 3px;
        height: auto;
    }
    .tracking-step {
        flex-direction: row;
        gap: 1rem;
        align-items: center;
    }
    .step-title {
        margin-top: 0;
        text-align: left;
    }
}

/* ==========================================================================
   PRODUCT CARDS & CATALOG GRIDS (PHASE 2)
   ========================================================================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.75rem;
}

.product-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-green-300);
}

.product-media {
    position: relative;
    aspect-ratio: 1 / 1.15;
    background-color: var(--color-grey-100);
    overflow: hidden;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.product-card:hover .product-image {
    transform: scale(1.06);
}

.product-badge-group {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    z-index: 2;
    pointer-events: none;
}

.wishlist-btn {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    z-index: 3;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    color: var(--color-grey-600);
    backdrop-filter: blur(4px);
}

.wishlist-btn:hover,
.wishlist-btn.active {
    background-color: var(--color-white);
    color: #ef4444;
    border-color: #fecaca;
    transform: scale(1.1);
}

.product-content {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 0.5rem;
}

.product-meta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.product-category-tag {
    font-weight: 700;
    color: var(--primary);
}

.product-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-grey-900);
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-title a:hover {
    color: var(--primary);
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8125rem;
}

.star-rating {
    color: #f59e0b;
    letter-spacing: 0.1em;
    font-size: 0.875rem;
}

.review-count {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.product-swatches {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 0.25rem;
}

.swatch-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, 0.2);
    display: inline-block;
}

.product-bottom-row {
    margin-top: auto;
    padding-top: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    border-top: 1px solid var(--border-light);
}

.product-price {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--color-grey-900);
}

.product-actions-btn-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ==========================================================================
   CATALOG FILTERS LAYOUT & CONTROLS
   Strictly no rating or stock filters allowed.
   ========================================================================== */
.catalog-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
    align-items: start;
}

.filter-sidebar {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
    position: sticky;
    top: 90px;
}

.filter-group-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.filter-group-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-grey-900);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-pills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.filter-pill {
    padding: 0.4rem 0.85rem;
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    background-color: var(--bg-surface);
    cursor: pointer;
    transition: var(--transition);
}

.filter-pill:hover,
.filter-pill.active {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--color-white);
}

.price-inputs-row {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 0.5rem;
}

.catalog-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.results-count {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.sort-select-wrapper {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.sort-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-grey-800);
    white-space: nowrap;
}

/* ==========================================================================
   PRODUCT DETAILS PAGE
   ========================================================================== */
.product-detail-layout {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 3.5rem;
    align-items: start;
    margin-bottom: 4rem;
}

.gallery-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.gallery-main-view {
    aspect-ratio: 1 / 1.15;
    background-color: var(--color-grey-100);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-light);
    position: relative;
}

.gallery-main-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-thumbs-row {
    display: flex;
    gap: 0.75rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

.thumb-item {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    overflow: hidden;
    cursor: pointer;
    background-color: var(--color-grey-100);
    flex-shrink: 0;
    transition: var(--transition);
}

.thumb-item:hover,
.thumb-item.active {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.thumb-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.detail-info-pane {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.breadcrumb-nav a:hover {
    color: var(--primary);
}

.detail-title {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--color-grey-900);
    line-height: 1.2;
}

.detail-price-row {
    display: flex;
    align-items: baseline;
    gap: 1rem;
}

.detail-price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-grey-900);
}

.live-activity-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.85rem;
    background-color: var(--color-green-50);
    border: 1px solid var(--color-green-200);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-green-900);
}

.live-beacon {
    width: 8px;
    height: 8px;
    background-color: var(--color-green-500);
    border-radius: 50%;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.25);
    animation: beacon-pulse 2s infinite;
}

@keyframes beacon-pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.option-section-title {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-grey-900);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.colour-picker-group {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.colour-pick-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--border-medium);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.colour-pick-btn:hover,
.colour-pick-btn.active {
    border-color: var(--primary);
    transform: scale(1.15);
    box-shadow: 0 0 0 2px var(--color-white), 0 0 0 4px var(--primary);
}

.size-picker-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.size-pick-btn {
    min-width: 48px;
    height: 40px;
    padding: 0 0.85rem;
    border: 1px solid var(--border-medium);
    background-color: var(--bg-surface);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
}

.size-pick-btn:hover,
.size-pick-btn.active {
    background-color: var(--color-grey-900);
    border-color: var(--color-grey-900);
    color: var(--color-white);
}

.cta-action-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
}

/* ==========================================================================
   CUSTOMER REVIEWS & FORM
   ========================================================================== */
.reviews-section {
    border-top: 1px solid var(--border-light);
    padding-top: 3.5rem;
    margin-top: 3rem;
}

.reviews-grid {
    display: grid;
    grid-template-columns: 1fr 1.35fr;
    gap: 3.5rem;
    align-items: start;
}

.review-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.review-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.reviewer-name {
    font-weight: 700;
    color: var(--color-grey-900);
    font-size: 0.9375rem;
}

.review-date {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.review-body {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.star-picker {
    display: flex;
    gap: 0.35rem;
    font-size: 1.6rem;
    cursor: pointer;
    color: var(--color-grey-300);
}

.star-picker-item {
    transition: color 0.2s ease;
}

.star-picker-item.active,
.star-picker-item:hover {
    color: #f59e0b;
}

/* ==========================================================================
   FOCUS VISIBILITY (ACCESSIBILITY)
   ========================================================================== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Media Query enhancements for catalog & product details */
@media (max-width: 1024px) {
    .catalog-layout {
        grid-template-columns: 240px 1fr;
        gap: 1.5rem;
    }
    .product-detail-layout {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .admin-layout {
        flex-direction: column;
    }

    .admin-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-light);
    }

    .admin-nav {
        flex-direction: row;
        overflow-x: auto;
        padding: 0.75rem;
    }

    .admin-nav-item {
        padding: 0.5rem 0.75rem;
        font-size: 0.8125rem;
        white-space: nowrap;
    }

    .admin-sidebar-footer {
        display: none;
    }

    .admin-main {
        padding: 1rem;
    }

    .form-grid-2 {
        grid-template-columns: 1fr;
    }

    .admin-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-toolbar-group {
        width: 100%;
    }

    .admin-search-input {
        width: 100%;
        min-width: 0;
    }

    .catalog-layout {
        grid-template-columns: 1fr;
    }
    .filter-sidebar {
        position: static;
        order: -1;
    }
    .product-detail-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
}

@media (max-width: 375px) {
    .product-grid {
        grid-template-columns: 1fr;
    }
    .cta-action-row {
        flex-direction: column;
    }
    .cta-action-row .btn {
        width: 100%;
    }
}


/* Helper classes for zero-inline-CSS layout */
.col-span-full {
    grid-column: 1 / -1;
}

.detail-description {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.ml-4 {
    margin-left: 1rem;
}

.empty-state-compact {
    grid-column: 1 / -1;
    margin: 1rem 0;
    padding: 2rem;
}

/* Dynamic Colour Swatch classes based on data-colour */
.swatch-dot,
.colour-pick-btn {
    background-color: var(--color-grey-500);
}

.swatch-dot[data-colour*="Forest"],
.colour-pick-btn[data-colour*="Forest"] { background-color: #166534; }

.swatch-dot[data-colour*="Emerald"],
.colour-pick-btn[data-colour*="Emerald"] { background-color: #15803d; }

.swatch-dot[data-colour*="Hunter"],
.colour-pick-btn[data-colour*="Hunter"] { background-color: #14532d; }

.swatch-dot[data-colour*="Olive"],
.colour-pick-btn[data-colour*="Olive"] { background-color: #3f6212; }

.swatch-dot[data-colour*="Pine"],
.colour-pick-btn[data-colour*="Pine"] { background-color: #064e3b; }

.swatch-dot[data-colour*="White"],
.colour-pick-btn[data-colour*="White"] { background-color: #ffffff; border-color: var(--border-medium); }

.swatch-dot[data-colour*="Grey"],
.colour-pick-btn[data-colour*="Grey"] { background-color: #64748b; }

.swatch-dot[data-colour*="Charcoal"],
.colour-pick-btn[data-colour*="Charcoal"] { background-color: #334155; }

.swatch-dot[data-colour*="Black"],
.colour-pick-btn[data-colour*="Black"] { background-color: #0f172a; }

.swatch-dot[data-colour*="Green"],
.colour-pick-btn[data-colour*="Green"] { background-color: #15803d; }

.swatch-dot[data-colour*="Khaki"],
.colour-pick-btn[data-colour*="Khaki"] { background-color: #4d7c0f; }

.swatch-dot[data-colour*="Mist"],
.colour-pick-btn[data-colour*="Mist"] { background-color: #86efac; }

/* ==========================================================================
   HOMEPAGE & STOREFRONT SECTIONS
   ========================================================================== */
.hero-section {
    background: linear-gradient(135deg, var(--color-grey-900) 0%, var(--color-green-950) 60%, var(--color-black) 100%);
    color: var(--color-white);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.hero-inner {
    max-width: 780px;
}

.hero-title {
    font-size: 3.25rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin: 1.25rem 0;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-grey-300);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.hero-cta-group {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-cta-group .btn-outline {
    color: var(--color-white);
    border-color: var(--color-grey-600);
}

.hero-cta-group .btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--color-white);
}

.section {
    padding: 5rem 0;
}

.section-intro {
    padding: 4.5rem 0 3.5rem;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--border-light);
}

.intro-headline {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1.25;
    color: var(--color-grey-900);
    max-width: 720px;
    margin: 0.5rem auto 1rem;
}

.intro-text {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto;
}

.eyebrow-tag {
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--primary);
    display: inline-block;
    margin-bottom: 0.5rem;
}

.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 2.25rem;
    flex-wrap: wrap;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    color: var(--color-grey-900);
}

.section-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-top: 0.35rem;
}

.bg-surface {
    background-color: var(--bg-surface);
}

.bg-alt {
    background-color: var(--bg-alt);
}

.home-bottom-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Category Quick Bar (Products Catalog) */
.catalog-header-section {
    padding: 1rem 0 0.5rem;
}

.category-quick-bar {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    box-shadow: var(--shadow-xs);
}

.category-quick-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.quick-bar-label {
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    min-width: 80px;
}

/* Mobile Filter Bar */
.mobile-filter-bar {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.875rem 1rem;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.filter-sidebar-header-row {
    display: none;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 1rem;
}

.filter-sidebar-heading {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-grey-900);
}

.filter-close-btn {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.25rem;
}

.filter-section-block {
    display: flex;
    flex-direction: column;
}

.filter-actions-block {
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-light);
}

.btn-block {
    width: 100%;
    display: block;
    text-align: center;
}

/* Promotional Capsule Banner */
.promo-banner-section {
    padding: 4.5rem 0;
}

.promo-banner-inner {
    background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 50%, #f4f4f5 100%);
    border: 1px solid var(--primary-border);
    border-radius: var(--radius-xl);
    padding: 4rem 3.5rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.promo-banner-content {
    max-width: 680px;
}

.promo-banner-title {
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.025em;
    color: var(--color-grey-900);
    margin: 1rem 0;
}

.promo-banner-desc {
    font-size: 1.0625rem;
    line-height: 1.65;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.promo-banner-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Service Commitments Grid */
.service-commitments-grid {
    gap: 1.5rem;
}

.service-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 2rem 1.75rem;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-border);
}

.service-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.service-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-grey-900);
    margin-bottom: 0.35rem;
}

.service-desc {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Product Details Additions: Guarantee Box & Specs */
.product-guarantee-box {
    background-color: var(--color-green-50);
    border: 1px solid var(--color-green-200);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
}

.guarantee-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.8125rem;
    color: var(--color-green-950);
}

.guarantee-item strong {
    display: block;
    font-size: 0.875rem;
    color: var(--color-green-900);
}

.guarantee-item span {
    color: var(--color-green-800);
}

.guarantee-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 1px;
}

.product-specs-section {
    padding: 3.5rem 0;
    border-top: 1px solid var(--border-light);
}

.spec-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
}

.spec-icon {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    display: inline-block;
}

.spec-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-grey-900);
}

.related-products-section {
    padding: 4rem 0;
    border-top: 1px solid var(--border-light);
}

/* Admin Dashboard Clusters */
.admin-dashboard-clusters {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 2rem;
}

.admin-cluster-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.75rem 2rem;
    box-shadow: var(--shadow-xs);
}

.admin-cluster-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-light);
}

.cluster-badge {
    background-color: var(--primary-light);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--primary-border);
}

.admin-cluster-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--color-grey-900);
    letter-spacing: -0.01em;
}

.admin-stats-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.admin-stats-grid-5 {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.25rem;
}

.category-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-green-300);
}

.category-img-box {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background-color: var(--color-grey-100);
}

.category-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.category-card:hover .category-img-box img {
    transform: scale(1.05);
}

.category-info {
    padding: 1.25rem;
}

.category-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-grey-900);
    margin-bottom: 0.25rem;
}

.category-count {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   PUBLIC FOOTER
   ========================================================================== */
.site-footer {
    background-color: var(--color-grey-900);
    color: var(--color-grey-400);
    padding: 4rem 0 2rem;
    margin-top: auto;
    border-top: 1px solid var(--color-grey-800);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand-desc {
    margin-top: 1rem;
    font-size: 0.9375rem;
    line-height: 1.6;
    max-width: 320px;
}

.footer-heading {
    color: var(--color-white);
    font-size: 0.9375rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-link {
    font-size: 0.875rem;
    color: var(--color-grey-400);
}

.footer-link:hover {
    color: var(--color-green-200);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--color-grey-800);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8125rem;
    color: var(--color-grey-500);
    flex-wrap: wrap;
    gap: 1rem;
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES (375px, 768px, 1024px, 1440px)
   ========================================================================== */

/* 1440px Large Desktop */
@media (min-width: 1440px) {
    :root {
        --max-width: 1360px;
    }
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    .hero-title {
        font-size: 3.5rem;
    }
}

/* 1024px Tablet Landscape / Small Laptop */
@media (max-width: 1024px) {
    .catalog-layout {
        grid-template-columns: 240px 1fr;
        gap: 1.5rem;
    }
    .product-detail-layout {
        gap: 2.5rem;
    }
    .service-commitments-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .admin-stats-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .admin-stats-grid-5 {
        grid-template-columns: repeat(3, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .admin-sidebar {
        width: 220px;
    }
}

/* 768px Mobile Landscape / Tablet Portrait */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background-color: var(--bg-surface);
        border-bottom: 1px solid var(--border-light);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.is-active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero-section {
        padding: 4.5rem 0 3.5rem;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .intro-headline {
        font-size: 1.6rem;
    }

    .promo-banner-inner {
        padding: 2.5rem 1.5rem;
    }

    .promo-banner-title {
        font-size: 1.75rem;
    }

    .service-commitments-grid {
        grid-template-columns: 1fr;
    }

    /* Catalog Layout on Mobile */
    .catalog-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .mobile-filter-bar {
        display: flex;
    }

    .desktop-sort {
        display: none;
    }

    .filter-sidebar {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 320px;
        max-width: 85vw;
        background-color: var(--bg-surface);
        z-index: 2000;
        box-shadow: var(--shadow-xl);
        overflow-y: auto;
        padding: 1.5rem;
    }

    .filter-sidebar.is-open {
        display: flex;
    }

    .filter-sidebar-header-row {
        display: flex;
    }

    .category-quick-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    /* Product Details Page on Mobile */
    .product-detail-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .product-specs-section .grid-cols-3 {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    /* Cart & Checkout on Mobile */
    .cart-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .cart-item-row {
        grid-template-columns: 75px 1fr;
        gap: 1rem;
    }

    .cart-item-img {
        width: 75px;
        height: 85px;
    }

    /* Admin on Mobile */
    .admin-layout {
        flex-direction: column;
    }

    .admin-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-light);
    }

    .admin-nav {
        flex-direction: row;
        overflow-x: auto;
        padding: 0.75rem 1rem;
    }

    .admin-main {
        padding: 1.25rem;
    }

    .admin-cluster-card {
        padding: 1.25rem 1rem;
    }

    .admin-stats-grid-4,
    .admin-stats-grid-5 {
        grid-template-columns: 1fr 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .grid-cols-3,
    .grid-cols-2 {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* 375px Mobile Portrait */
@media (max-width: 375px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .hero-title {
        font-size: 1.85rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .product-grid {
        grid-template-columns: 1fr;
    }

    .auth-card,
    .admin-auth-card,
    .error-card {
        padding: 1.5rem 1rem;
    }

    .admin-stats-grid-4,
    .admin-stats-grid-5,
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .error-code {
        font-size: 3.5rem;
    }

    .error-title {
        font-size: 1.25rem;
    }

    .btn {
        padding: 0.625rem 1rem;
        font-size: 0.875rem;
    }

    .cta-action-row {
        flex-direction: column;
        width: 100%;
    }

    .cta-action-row .btn {
        width: 100%;
    }
}

/* ==========================================================================
   ADMIN NOTIFICATION CENTRE STYLES
   Bell icon, counter badge, dropdown preview, feed cards, deep-links
   ========================================================================== */

.admin-notif-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.admin-notif-bell-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
    padding: 0.4rem;
    font-size: 1.25rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: background 0.15s ease, transform 0.15s ease;
}

.admin-notif-bell-btn:hover {
    background-color: var(--color-grey-800);
    transform: scale(1.05);
}

.admin-notif-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background-color: #ef4444;
    color: var(--color-white);
    font-size: 0.65rem;
    font-weight: 800;
    min-width: 18px;
    height: 18px;
    line-height: 18px;
    padding: 0 4px;
    border-radius: 9999px;
    text-align: center;
    box-shadow: 0 0 0 2px var(--color-grey-900);
    animation: notifPulse 2s infinite ease-in-out;
}

@keyframes notifPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

.sidebar-badge {
    margin-left: auto;
    background-color: #ef4444;
    color: var(--color-white);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 0.15rem 0.5rem;
    border-radius: 9999px;
}

.admin-notif-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 380px;
    max-width: 90vw;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.35);
    z-index: 1050;
    overflow: hidden;
    animation: notifFadeDown 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes notifFadeDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.admin-notif-dropdown-header {
    padding: 0.75rem 1rem;
    background-color: var(--bg-alt);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-notif-dropdown-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.admin-notif-dropdown-body {
    max-height: 380px;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.admin-notif-dropdown-footer {
    padding: 0.625rem 1rem;
    background-color: var(--bg-alt);
    border-top: 1px solid var(--border-light);
    text-align: center;
}

.admin-notif-view-all {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    display: inline-block;
    transition: color 0.15s ease;
}

.admin-notif-view-all:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.admin-notif-empty {
    padding: 2.5rem 1rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.admin-notif-card {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--border-light);
    background-color: var(--bg-surface);
    transition: background-color 0.15s ease;
    position: relative;
}

.admin-notif-card:hover {
    background-color: var(--bg-alt);
}

.admin-notif-card.is-unread {
    background-color: var(--color-green-50);
    border-left: 3px solid var(--primary);
}

.admin-notif-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    background-color: var(--bg-alt);
}

.admin-notif-icon.type-order { background-color: #dbeafe; color: #1e40af; }
.admin-notif-icon.type-stock { background-color: #fef3c7; color: #b45309; }
.admin-notif-icon.type-return { background-color: #fee2e2; color: #b91c1c; }
.admin-notif-icon.type-customer { background-color: #e0e7ff; color: #4338ca; }
.admin-notif-icon.type-catalog { background-color: #f3e8ff; color: #7e22ce; }

.admin-notif-body {
    flex: 1;
    min-width: 0;
}

.admin-notif-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.admin-notif-title {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.admin-notif-msg {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin: 0.25rem 0 0.4rem 0;
    line-height: 1.4;
    word-break: break-word;
}

.admin-notif-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.admin-notif-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background-color: var(--bg-alt);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    padding: 0.15rem 0.45rem;
    font-size: 0.725rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.admin-notif-link:hover {
    background-color: var(--color-green-100);
    border-color: var(--color-green-500);
    color: var(--color-green-900);
}

.admin-notif-action-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.75rem;
    padding: 0.15rem 0.35rem;
    border-radius: var(--radius-sm);
    transition: color 0.15s ease, background-color 0.15s ease;
}

.admin-notif-action-btn:hover {
    color: var(--text-primary);
    background-color: var(--border-light);
}

.admin-notif-unread-dot {
    width: 8px;
    height: 8px;
    border-radius: 9999px;
    background-color: var(--primary);
    display: inline-block;
    flex-shrink: 0;
}

.admin-notif-centre-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 1rem;
}

.admin-notif-feed {
    display: flex;
    flex-direction: column;
}

.admin-notif-feed .admin-notif-card {
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    border: 1px solid var(--border-light);
}

.admin-notif-feed .admin-notif-card.is-unread {
    border-color: var(--color-green-200);
}

.btn-text {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--primary);
    font-weight: 600;
    padding: 0;
    transition: color 0.15s ease;
}

.btn-text:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.btn-text-sm {
    font-size: 0.75rem;
}