/* RK Knit Fab Compiled B2B Fabric Catalogue - Custom CSS Design System */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
    /* Color System - Engineered Precision */
    --primary: #16157c;
    --primary-light: #2f3192;
    --primary-container: #e1e0ff;
    --on-primary-container: #06006c;
    --secondary: #bb0013;
    --secondary-container: #ffdad6;
    --on-secondary-container: #410002;
    --whatsapp: #25D366;
    --whatsapp-dark: #128C7E;
    
    /* Neutral Palette */
    --bg-base: #fcfaf8;
    --bg-surface: #ffffff;
    --bg-surface-low: #f5f3f3;
    --bg-surface-lowest: #ffffff;
    --text-primary: #1b1c1c;
    --text-secondary: #464652;
    --text-muted: #777683;
    --outline: #eae8e7;
    --outline-variant: #c7c5d4;
    --shadow: rgba(22, 21, 124, 0.04);
    --shadow-heavy: rgba(22, 21, 124, 0.08);
    
    /* Header bg uses a separate RGB channel var for rgba() */
    --bg-surface-rgb: 255, 255, 255;
    --bg-overlay-rgb: 255, 255, 255;
    
    /* Layout */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --border-radius-full: 9999px;
    
    --container-max: 1200px;
    --transition-speed: 0.25s;
    --easing: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Explicit class-based dark mode override */
body.dark-theme {
    --bg-base: #111116;
    --bg-surface: #17171e;
    --bg-surface-low: #20202a;
    --bg-surface-lowest: #0c0c10;
    --text-primary: #f2f0f0;
    --text-secondary: #c7c5d4;
    --text-muted: #8e8d9c;
    --outline: #2e2e3a;
    --outline-variant: #464652;
    --shadow: rgba(0, 0, 0, 0.2);
    --shadow-heavy: rgba(0, 0, 0, 0.3);
    --primary-container: #1d1c54;
    --on-primary-container: #e1e0ff;
    --bg-surface-rgb: 23, 23, 30;
    --bg-overlay-rgb: 17, 17, 22;
}

/* Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    background-image: radial-gradient(var(--outline) 1px, transparent 1px);
    background-size: 24px 24px;
    padding-bottom: 70px; /* Safe padding for mobile bottom bar */
}

@media (min-width: 768px) {
    body {
        padding-bottom: 0;
    }
}

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

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

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

/* Typography Classes */
.font-display {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.font-heading {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
}

.font-spec {
    font-family: 'Inter', monospace;
    font-weight: 500;
    letter-spacing: 0.05em;
}

/* Main Layout Shell */
.app-header {
    background-color: rgba(var(--bg-surface-rgb), 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--outline);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-speed) var(--easing), border-color var(--transition-speed) var(--easing);
}

.header-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 40px;
    width: 40px;
    border-radius: var(--border-radius-full);
    border: 1px solid var(--outline);
    object-fit: cover;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
}

body.dark-theme .logo-text {
    color: #a5a4f3;
}

.nav-links {
    display: none;
    gap: 32px;
    height: 100%;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-item {
    display: flex;
    align-items: center;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    padding: 0 4px;
    cursor: pointer;
}

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

body.dark-theme .nav-item:hover, body.dark-theme .nav-item.active {
    color: #a5a4f3;
}

.nav-item.active {
    border-bottom-color: var(--primary);
}

body.dark-theme .nav-item.active {
    border-bottom-color: #a5a4f3;
}

.action-buttons {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* UI Elements */
.btn-primary {
    background-color: var(--primary);
    color: #ffffff;
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition-speed) var(--easing);
    box-shadow: 0 2px 6px var(--shadow);
}

.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--shadow-heavy);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
    padding: 9px 18px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition-speed) var(--easing);
}

body.dark-theme .btn-outline {
    color: #a5a4f3;
    border-color: #a5a4f3;
}

.btn-outline:hover {
    background-color: var(--bg-surface-low);
}

.btn-whatsapp {
    background-color: var(--whatsapp);
    color: #ffffff;
    border: none;
    padding: 12px 24px;
    border-radius: var(--border-radius-md);
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all var(--transition-speed) var(--easing);
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.25);
}

.btn-whatsapp:hover {
    background-color: var(--whatsapp-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(37, 211, 102, 0.4);
}

.btn-theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius-full);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-speed);
}

.btn-theme-toggle:hover {
    background-color: var(--bg-surface-low);
    color: var(--primary);
}

/* Edit Mode Toggle Button */
.btn-edit-toggle {
    background: none;
    border: 1.5px solid var(--outline-variant);
    cursor: pointer;
    padding: 6px 14px;
    border-radius: var(--border-radius-full);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    transition: all var(--transition-speed);
    font-family: 'Space Grotesk', sans-serif;
}

.btn-edit-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
    background-color: var(--bg-surface-low);
}

.btn-edit-toggle.editing {
    background-color: #e74c3c;
    color: #fff;
    border-color: #e74c3c;
}

.btn-edit-toggle .material-symbols-outlined {
    font-size: 16px;
}

/* Page Containers */
.main-content {
    flex-grow: 1;
    max-width: var(--container-max);
    width: 100%;
    margin: 0 auto;
    padding: 24px 16px;
    transition: opacity 0.3s ease;
}

@media (min-width: 768px) {
    .main-content {
        padding: 48px 24px;
    }
}

/* --- Catalog Grid Page --- */
.intro-section {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 40px;
}

.intro-section h2 {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 12px;
}

body.dark-theme .intro-section h2 {
    color: #a5a4f3;
}

.intro-section p {
    color: var(--text-secondary);
    font-size: 16px;
}

/* Search and Filters */
.controls-bar {
    max-width: 800px;
    margin: 0 auto 48px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.search-wrapper {
    position: relative;
    width: 100%;
}

.search-input {
    width: 100%;
    padding: 16px 20px 16px 48px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--outline-variant);
    background-color: var(--bg-surface);
    color: var(--text-primary);
    outline: none;
    box-shadow: 0 4px 16px var(--shadow);
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 4px 20px rgba(22, 21, 124, 0.1);
}

.search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 20px;
}

.filter-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.filter-pill {
    padding: 8px 18px;
    border-radius: var(--border-radius-full);
    border: 1px solid var(--outline-variant);
    background-color: var(--bg-surface);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition-speed) var(--easing);
}

.filter-pill:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-pill.active {
    background-color: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(22, 21, 124, 0.2);
}

.results-stats {
    text-align: center;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    margin-top: -10px;
}

/* Fabric Cards Grid */
.fabrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 32px;
}

.fabric-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--outline);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    cursor: pointer;
    box-shadow: 0 4px 10px var(--shadow);
    transition: transform var(--transition-speed) var(--easing), border-color var(--transition-speed) var(--easing), box-shadow var(--transition-speed) var(--easing);
}

.fabric-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary);
    box-shadow: 0 12px 24px var(--shadow-heavy);
}

.card-image-box {
    position: relative;
    width: 100%;
    padding-top: 75%; /* 4:3 ratio for preview */
    overflow: hidden;
    background-color: var(--bg-surface-low);
}

.card-image-box img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s var(--easing);
}

.fabric-card:hover .card-image-box img {
    transform: scale(1.08);
}

.card-category-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(4px);
    color: #16157c;
    border: 1px solid rgba(22, 21, 124, 0.2);
    padding: 4px 10px;
    font-size: 10px;
    font-weight: 700;
    border-radius: var(--border-radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 2;
}

body.dark-theme .card-category-tag {
    background-color: rgba(30, 30, 40, 0.85);
    color: #a5a4f3;
    border-color: rgba(165, 164, 243, 0.3);
}

.card-swatch-count {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background-color: rgba(0, 0, 0, 0.65);
    color: #fff;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    gap: 4px;
    z-index: 2;
}

.card-swatch-count .material-symbols-outlined {
    font-size: 13px;
}

.card-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.card-desc {
    font-size: 13.5px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 40px;
    line-height: 1.5;
}

.card-specs-row {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    padding-top: 12px;
    border-t: 1.5px dashed var(--outline);
}

.card-spec-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.card-spec-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
}

.card-spec-val {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
}

body.dark-theme .card-spec-val {
    color: #a5a4f3;
}

/* Detail View Common Styles */
.back-btn-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 24px;
    cursor: pointer;
    background-color: var(--bg-surface);
    padding: 8px 16px;
    border-radius: var(--border-radius-full);
    border: 1px solid var(--outline);
    box-shadow: 0 2px 5px var(--shadow);
    transition: all var(--transition-speed);
    width: fit-content;
}

.back-btn-link:hover {
    color: var(--primary);
    border-color: var(--primary);
    transform: translateX(-2px);
}

.back-btn-link .material-symbols-outlined {
    font-size: 16px;
    transition: transform var(--transition-speed);
}

.back-btn-link:hover .material-symbols-outlined {
    transform: translateX(-3px);
}

/* Specs Table Standardized styling */
.specifications-table-card {
    border: 1px solid var(--outline);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    background-color: var(--bg-surface);
    box-shadow: 0 4px 12px var(--shadow);
}

.specifications-table-header {
    background-color: var(--bg-surface-low);
    padding: 16px 24px;
    border-bottom: 1px solid var(--outline);
    display: flex;
    align-items: center;
    gap: 12px;
}

.specifications-table-header h3 {
    font-size: 18px;
    color: var(--primary);
}

body.dark-theme .specifications-table-header h3 {
    color: #a5a4f3;
}

.spec-table-el {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.spec-table-el th, .spec-table-el td {
    padding: 14px 24px;
    border-bottom: 1px solid var(--outline);
}

.spec-table-el th {
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    width: 35%;
}

.spec-table-el td {
    color: var(--text-primary);
    font-weight: 500;
}

.spec-table-el tr:last-child th, .spec-table-el tr:last-child td {
    border-bottom: none;
}

/* Image Swatches Swapper Component */
.gallery-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
    width: 100%;
}

.main-image-viewport {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--outline-variant);
    overflow: hidden;
    background-color: var(--bg-surface-low);
    box-shadow: 0 6px 16px var(--shadow);
    position: relative;
    cursor: zoom-in;
}

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

.zoom-hint-badge {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(0,0,0,0.55);
    color: #fff;
    padding: 4px 10px;
    border-radius: var(--border-radius-full);
    font-size: 11px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 5px;
    pointer-events: none;
    z-index: 2;
}

.zoom-hint-badge .material-symbols-outlined {
    font-size: 14px;
}

.thumbnail-strip {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding: 4px 0;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}

.thumbnail-strip::-webkit-scrollbar {
    height: 4px;
}

.thumbnail-strip::-webkit-scrollbar-track {
    background: var(--bg-surface-low);
    border-radius: 4px;
}

.thumbnail-strip::-webkit-scrollbar-thumb {
    background: var(--outline-variant);
    border-radius: 4px;
}

.thumbnail-item {
    width: 68px;
    height: 68px;
    border-radius: var(--border-radius-sm);
    border: 2px solid var(--outline);
    overflow: hidden;
    cursor: pointer;
    flex-shrink: 0;
    transition: all var(--transition-speed);
}

.thumbnail-item:hover {
    border-color: var(--primary-light);
}

.thumbnail-item.active {
    border-color: var(--primary);
    transform: scale(1.05);
    box-shadow: 0 4px 8px var(--shadow-heavy);
}

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

/* ========== ZOOM MODAL ========== */
.zoom-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.92);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.zoom-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.zoom-close-btn {
    position: absolute;
    top: 20px;
    right: 24px;
    background: rgba(255,255,255,0.15);
    border: none;
    color: #fff;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: background 0.2s;
    z-index: 10;
}

.zoom-close-btn:hover {
    background: rgba(255,255,255,0.3);
}

.zoom-image-container {
    width: 90vw;
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
    position: relative;
}

.zoom-image-container img {
    max-width: none;
    max-height: none;
    width: auto;
    height: auto;
    cursor: grab;
    transition: transform 0.2s ease;
    transform-origin: center center;
}

.zoom-image-container img.zoomed-in {
    cursor: zoom-out;
}

.zoom-controls {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    z-index: 10;
}

.zoom-ctrl-btn {
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: background 0.2s;
}

.zoom-ctrl-btn:hover {
    background: rgba(255,255,255,0.3);
}

.zoom-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.15);
    border: none;
    color: #fff;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    z-index: 10;
}

.zoom-nav-btn:hover {
    background: rgba(255,255,255,0.3);
}

.zoom-nav-btn.prev {
    left: 16px;
}

.zoom-nav-btn.next {
    right: 16px;
}

.zoom-counter {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255,255,255,0.7);
    font-size: 13px;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
}

/* --- DETAIL LAYOUT A (Classic Swatch Grid) --- */
.layout-a-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

@media (min-width: 992px) {
    .layout-a-grid {
        grid-template-columns: repeat(12, 1fr);
    }
    .layout-a-gallery {
        grid-column: span 6;
    }
    .layout-a-content {
        grid-column: span 6;
    }
}

.layout-a-details-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--outline);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    box-shadow: 0 4px 16px var(--shadow);
    height: 100%;
    display: flex;
    flex-direction: column;
}

@media (min-width: 768px) {
    .layout-a-details-card {
        padding: 40px;
    }
}

.layout-a-header-block {
    margin-bottom: 24px;
}

.bestseller-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: var(--primary-container);
    color: var(--on-primary-container);
    padding: 6px 14px;
    border-radius: var(--border-radius-full);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.fabric-title-h1 {
    font-size: 32px;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 16px;
}

@media (min-width: 768px) {
    .fabric-title-h1 {
        font-size: 42px;
    }
}

.fabric-intro-p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.mini-specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 32px;
}

.mini-spec-box {
    background-color: var(--bg-surface-low);
    border: 1px solid var(--outline);
    padding: 16px;
    border-radius: var(--border-radius-md);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mini-spec-box-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.mini-spec-box-label .material-symbols-outlined {
    font-size: 15px;
}

.mini-spec-box-val {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
}

.quick-bullets {
    margin-bottom: 40px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.bullet-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.bullet-icon {
    color: var(--primary);
    font-size: 20px;
    margin-top: 2px;
}

body.dark-theme .bullet-icon {
    color: #a5a4f3;
}

.bullet-title {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
    text-transform: uppercase;
}

.bullet-text {
    font-size: 14.5px;
    color: var(--text-secondary);
}

.detail-actions-row {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

@media (min-width: 576px) {
    .detail-actions-row {
        flex-direction: row;
    }
    .detail-actions-row button, .detail-actions-row a {
        flex: 1;
        justify-content: center;
    }
}

/* --- DETAIL LAYOUT B (Technical Split) --- */
.layout-b-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

@media (min-width: 992px) {
    .layout-b-grid {
        grid-template-columns: 6fr 5fr;
        gap: 64px;
    }
}

.layout-b-left {
    background-color: var(--bg-surface);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--outline);
    box-shadow: 0 4px 16px var(--shadow);
}

@media (min-width: 768px) {
    .layout-b-left {
        padding: 48px;
    }
}

.technical-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.technical-breadcrumb .material-symbols-outlined {
    font-size: 14px;
}

.technical-breadcrumb-active {
    color: var(--primary);
}

body.dark-theme .technical-breadcrumb-active {
    color: #a5a4f3;
}

.technical-table-container {
    border: 1px solid var(--outline);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    margin: 32px 0;
}

.technical-table {
    width: 100%;
    border-collapse: collapse;
}

.technical-table th, .technical-table td {
    padding: 12px 18px;
    border-bottom: 1px solid var(--outline);
    font-size: 14px;
}

.technical-table th {
    background-color: var(--bg-surface-low);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 11px;
    color: var(--text-secondary);
    width: 40%;
}

.technical-table td {
    font-weight: 500;
}

.technical-table tr:last-child th, .technical-table tr:last-child td {
    border-bottom: none;
}

.moq-strip {
    background-color: var(--bg-surface-low);
    border-top: 1px solid var(--outline);
    padding: 12px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    font-weight: 600;
}

.moq-strip-label {
    text-transform: uppercase;
    color: var(--text-secondary);
}

.moq-strip-val {
    color: var(--primary);
}

body.dark-theme .moq-strip-val {
    color: #a5a4f3;
}

.layout-b-right {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px 0;
}

.tilted-polaroid-frame {
    background-color: var(--bg-surface);
    border: 1px solid var(--outline-variant);
    padding: 16px 16px 64px 16px;
    box-shadow: 0 20px 40px var(--shadow-heavy);
    width: 100%;
    max-width: 440px;
    transform: rotate(2deg);
    transition: transform 0.4s var(--easing);
}

.tilted-polaroid-frame:hover {
    transform: rotate(0deg);
}

.polaroid-image-box {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    overflow: hidden;
    border: 1px solid var(--text-muted);
    cursor: zoom-in;
}

.magnification-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background-color: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--text-muted);
    padding: 4px 8px;
    font-size: 9px;
    font-weight: 700;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--text-primary);
}

body.dark-theme .magnification-badge {
    background-color: rgba(30,30,40,0.9);
}

.magnification-badge .material-symbols-outlined {
    font-size: 12px;
    color: var(--primary);
}

.polaroid-label-area {
    margin-top: 16px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.specimen-label-col {
    display: flex;
    flex-direction: column;
}

.specimen-tag {
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.specimen-id {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.seal-icon-wrapper {
    height: 40px;
    width: 40px;
    border: 1px solid var(--primary);
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.35;
    color: var(--primary);
}

/* --- DETAIL LAYOUT C (Polaroid Showcase) --- */
.layout-c-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    align-items: start;
}

@media (min-width: 992px) {
    .layout-c-grid {
        grid-template-columns: 5fr 7fr;
        gap: 64px;
    }
}

.retro-polaroid-container {
    background-color: var(--bg-surface);
    border: 1px solid var(--outline);
    padding: 20px 20px 80px 20px;
    box-shadow: 0 15px 35px var(--shadow-heavy);
    transform: rotate(-1.5deg);
    transition: transform 0.4s var(--easing);
    max-width: 420px;
    margin: 0 auto;
    width: 100%;
}

.retro-polaroid-container:hover {
    transform: rotate(0deg);
}

.retro-polaroid-viewport {
    width: 100%;
    aspect-ratio: 0.85; /* Standard portrait crop */
    overflow: hidden;
    background-color: var(--bg-surface-low);
    border: 1px solid var(--outline);
    cursor: zoom-in;
}

.retro-polaroid-viewport img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.layout-c-details {
    display: flex;
    flex-direction: column;
}

.layout-c-specs-card {
    background-color: var(--bg-surface-lowest);
    border: 1px solid var(--outline-variant);
    border-radius: var(--border-radius-md);
    padding: 32px;
    margin-top: 32px;
    box-shadow: 0 4px 15px var(--shadow);
}

.layout-c-specs-title {
    font-size: 18px;
    color: var(--primary);
    border-bottom: 1px solid var(--outline);
    padding-bottom: 12px;
    margin-bottom: 20px;
}

body.dark-theme .layout-c-specs-title {
    color: #a5a4f3;
}

.layout-c-specs-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 576px) {
    .layout-c-specs-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.layout-c-spec-box {
    display: flex;
    flex-direction: column;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--outline);
}

.layout-c-spec-box.full-width {
    grid-column: span 1;
}

@media (min-width: 576px) {
    .layout-c-spec-box.full-width {
        grid-column: span 2;
    }
}

.layout-c-spec-box:last-child {
    border-bottom: none;
}

.layout-c-moq-box {
    grid-column: span 1;
    background-color: var(--bg-surface-low);
    padding: 16px;
    border-radius: var(--border-radius-sm);
    display: flex;
    flex-direction: column;
    border: none;
}

@media (min-width: 576px) {
    .layout-c-moq-box {
        grid-column: span 2;
    }
}

.layout-c-spec-label {
    font-size: 11px;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.layout-c-spec-val {
    font-size: 14.5px;
    font-weight: 700;
    color: var(--text-primary);
}

.layout-c-moq-box .layout-c-spec-val {
    color: var(--primary);
    font-size: 16px;
}

body.dark-theme .layout-c-moq-box .layout-c-spec-val {
    color: #a5a4f3;
}

.layout-c-whatsapp-row {
    margin-top: 32px;
}

/* --- DETAIL LAYOUT D (Minimal Overlap) --- */
.layout-d-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

@media (min-width: 992px) {
    .layout-d-grid {
        grid-template-columns: 5fr 7fr;
        gap: 64px;
        align-items: center;
    }
}

.layout-d-left {
    display: flex;
    flex-direction: column;
}

.layout-d-right {
    position: relative;
    padding-bottom: 24px;
    padding-right: 24px;
}

.layout-d-backdrop-bg {
    position: absolute;
    bottom: 0;
    left: 24px;
    width: calc(100% - 24px);
    height: calc(100% - 24px);
    background-color: var(--primary-container);
    opacity: 0.3;
    border: 1px solid var(--primary-light);
    border-radius: var(--border-radius-sm);
    z-index: 0;
}

.layout-d-main-img-box {
    position: relative;
    width: 100%;
    height: 380px;
    background-color: var(--bg-surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    box-shadow: 0 10px 25px var(--shadow-heavy);
    z-index: 1;
    cursor: zoom-in;
}

@media (min-width: 768px) {
    .layout-d-main-img-box {
        height: 480px;
    }
}

.layout-d-main-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.layout-d-floating-overlay {
    position: absolute;
    bottom: 30px;
    right: -10px;
    width: 250px;
    background-color: var(--bg-surface);
    border-left: 4px solid var(--primary);
    padding: 20px;
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    box-shadow: 0 8px 20px var(--shadow-heavy);
    z-index: 2;
    transition: transform var(--transition-speed);
}

.layout-d-floating-overlay:hover {
    transform: translateY(-2px);
}

.floating-overlay-label {
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 4px;
}

body.dark-theme .floating-overlay-label {
    color: #a5a4f3;
}

.floating-overlay-val {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

/* GSM Calculator Section */
.calculator-card {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--bg-surface);
    border: 1px solid var(--outline);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    box-shadow: 0 8px 24px var(--shadow-heavy);
}

.calculator-card h2 {
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 24px;
    text-align: center;
}

body.dark-theme .calculator-card h2 {
    color: #a5a4f3;
}

.calc-form-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.calc-form-group label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.calc-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.calc-input {
    width: 100%;
    padding: 12px 48px 12px 16px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--outline-variant);
    background-color: var(--bg-surface-low);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition-speed);
}

.calc-input:focus {
    border-color: var(--primary);
    background-color: var(--bg-surface);
}

.calc-unit {
    position: absolute;
    right: 16px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
}

.calc-button {
    width: 100%;
    margin-top: 12px;
    padding: 14px;
    font-size: 14px;
}

.calc-result-box {
    margin-top: 28px;
    padding: 20px;
    background-color: var(--primary-container);
    color: var(--on-primary-container);
    border-radius: var(--border-radius-md);
    text-align: center;
    display: none;
    animation: fadeIn 0.3s ease;
}

.calc-result-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.calc-result-val {
    font-size: 32px;
    font-weight: 700;
}

.calc-formula-note {
    font-size: 11.5px;
    color: var(--text-muted);
    text-align: center;
    margin-top: 24px;
    line-height: 1.5;
}

/* Footer Section */
.app-footer {
    background-color: var(--bg-surface-low);
    border-top: 1px solid var(--outline);
    padding: 48px 24px;
    margin-top: auto;
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

@media (min-width: 768px) {
    .footer-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
    }
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 380px;
}

.footer-brand-title {
    font-size: 20px;
    color: var(--primary);
    font-weight: 700;
}

body.dark-theme .footer-brand-title {
    color: #a5a4f3;
}

.footer-brand-desc {
    font-size: 13.5px;
    color: var(--text-secondary);
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

@media (min-width: 768px) {
    .footer-nav {
        align-items: flex-end;
        text-align: right;
    }
}

.footer-links-row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 24px;
}

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

.footer-copyright {
    font-size: 12px;
    color: var(--text-muted);
}

/* Bottom Nav Bar (Mobile Only) */
.mobile-nav-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--bg-surface);
    border-top: 1px solid var(--outline);
    height: 60px;
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 99;
    box-shadow: 0 -4px 16px var(--shadow);
}

@media (min-width: 768px) {
    .mobile-nav-bar {
        display: none;
    }
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 10px;
    font-weight: 600;
    cursor: pointer;
    flex-grow: 1;
    height: 100%;
    gap: 4px;
}

.mobile-nav-item.active {
    color: var(--primary);
}

body.dark-theme .mobile-nav-item.active {
    color: #a5a4f3;
}

.mobile-nav-item .material-symbols-outlined {
    font-size: 22px;
}

.mobile-nav-item.active .material-symbols-outlined {
    font-variation-settings: 'FILL' 1;
}

/* ========== EDIT MODE STYLES ========== */
.editable-field {
    display: none;
}

body.edit-mode .editable-field {
    display: inline-block;
}

body.edit-mode .editable-text {
    outline: 2px dashed rgba(231, 76, 60, 0.4);
    outline-offset: 4px;
    border-radius: 4px;
    cursor: text;
    min-width: 40px;
    transition: outline-color 0.2s;
}

body.edit-mode .editable-text:focus {
    outline-color: #e74c3c;
    background-color: rgba(231, 76, 60, 0.04);
}

body.edit-mode .editable-text:hover {
    outline-color: rgba(231, 76, 60, 0.7);
}

.edit-image-overlay {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 5;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 8px;
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

body.edit-mode .edit-image-overlay {
    display: flex;
}

.edit-image-overlay .material-symbols-outlined {
    font-size: 32px;
}

.edit-banner {
    display: none;
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: #fff;
    text-align: center;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.03em;
    font-family: 'Space Grotesk', sans-serif;
}

body.edit-mode .edit-banner {
    display: block;
}

.edit-save-bar {
    display: none;
    position: fixed;
    bottom: 70px;
    left: 50%;
    transform: translateX(-50%);
    background: #e74c3c;
    color: #fff;
    padding: 10px 28px;
    border-radius: var(--border-radius-full);
    font-weight: 700;
    font-size: 13px;
    cursor: pointer;
    z-index: 200;
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
    border: none;
    font-family: 'Space Grotesk', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.2s;
}

body.edit-mode .edit-save-bar {
    display: block;
}

.edit-save-bar:hover {
    transform: translateX(-50%) translateY(-2px);
    box-shadow: 0 8px 28px rgba(231, 76, 60, 0.5);
}

@media (min-width: 768px) {
    .edit-save-bar {
        bottom: 32px;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.4s var(--easing) forwards;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* Print Styling Override */
@media print {
    body {
        background-color: #ffffff !important;
        background-image: none !important;
        color: #000000 !important;
        padding-bottom: 0 !important;
    }
    .app-header, 
    .mobile-nav-bar, 
    .app-footer, 
    .back-btn-link, 
    .detail-actions-row, 
    .layout-c-whatsapp-row,
    .controls-bar,
    .thumbnail-strip,
    .btn-theme-toggle,
    .btn-edit-toggle,
    .edit-banner,
    .edit-save-bar,
    .zoom-overlay,
    .zoom-hint-badge,
    .edit-image-overlay {
        display: none !important;
    }
    .main-content {
        padding: 0 !important;
        margin: 0 !important;
        max-width: 100% !important;
    }
    .layout-a-grid, .layout-b-grid, .layout-c-grid, .layout-d-grid {
        display: block !important;
    }
    .layout-a-gallery, .layout-b-right, .retro-polaroid-container, .layout-d-right {
        max-width: 320px !important;
        margin: 0 auto 30px auto !important;
        page-break-inside: avoid !important;
    }
    .layout-a-details-card, .layout-b-left, .layout-c-specs-card, .layout-d-left {
        border: none !important;
        padding: 0 !important;
        box-shadow: none !important;
        background-color: transparent !important;
    }
    .specifications-table-card, .technical-table-container {
        box-shadow: none !important;
        page-break-inside: avoid !important;
        margin-top: 30px !important;
        border: 1px solid #000000 !important;
    }
    .spec-table-el th, .spec-table-el td, .technical-table th, .technical-table td {
        border-bottom: 1px solid #000000 !important;
        color: #000000 !important;
    }
    .tilted-polaroid-frame, .retro-polaroid-container {
        transform: none !important;
        box-shadow: none !important;
        border: 1px solid #000000 !important;
    }
}