/* ==========================================================================
   Angkor BIM - Modern Design System (Static Version)
   Fonts: Kantumruy Pro (Khmer) + Inter (Latin)
   ========================================================================== */

:root {
    /* Brand Colors */
    --primary: #0f294a;
    --primary-light: #1a4d8c;
    --primary-dark: #0a1b33;
    --secondary: #2563eb;
    --accent: #0ea5e9;
    --accent-hover: #0284c7;
    --accent-gradient: linear-gradient(135deg, #0ea5e9, #2563eb);
    --gold: #f59e0b;
    --emerald: #10b981;
    --rose: #e11d48;

    /* Product specific accents */
    --color-qs: #0d9488;
    --color-model: #2563eb;
    --color-rebar: #e11d48;
    --color-bundle: #f59e0b;

    /* Backgrounds */
    --bg-body: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #ffffff;
    --bg-muted: #f1f5f9;
    --bg-dark: #0f172a;
    --bg-dark-surface: #1e293b;

    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --text-light: #f8fafc;
    --text-heading: #0f294a;

    /* Borders & Outlines */
    --border-subtle: #e2e8f0;
    --border-medium: #cbd5e1;
    --border-focus: #0ea5e9;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 16px 36px rgba(15, 23, 42, 0.12);
    --shadow-xl: 0 24px 48px -12px rgba(15, 23, 42, 0.18);
    --shadow-glow: 0 0 25px rgba(14, 165, 233, 0.35);

    /* Radii */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-fast: all 0.15s ease-in-out;
}

/* Base Reset & Typography */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Kantumruy Pro', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-heading);
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -0.01em;
}

p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

p:last-child {
    margin-bottom: 0;
}

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

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

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

ul, ol {
    list-style: none;
}

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

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow {
    max-width: 900px;
}

.section {
    padding: 80px 0;
    position: relative;
}

.section-sm {
    padding: 50px 0;
}

.section-lg {
    padding: 100px 0;
}

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

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

.bg-dark {
    background-color: var(--bg-dark);
    color: var(--text-light);
}

.bg-dark h1, .bg-dark h2, .bg-dark h3, .bg-dark h4 {
    color: #ffffff;
}

.bg-dark p {
    color: #94a3b8;
}

/* Section Header */
.section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 50px auto;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: 16px;
}

.badge-primary {
    background: rgba(14, 165, 233, 0.12);
    color: var(--accent);
    border: 1px solid rgba(14, 165, 233, 0.25);
}

.badge-gold {
    background: rgba(245, 158, 11, 0.12);
    color: var(--gold);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-emerald {
    background: rgba(16, 185, 129, 0.12);
    color: var(--emerald);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.section-title {
    font-size: 2.3rem;
    margin-bottom: 16px;
    color: var(--primary);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    transition: var(--transition);
}

.site-header.scrolled {
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--primary);
}

.brand-logo {
    width: 44px;
    height: 44px;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.1);
}

.brand-info {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

.brand-tagline {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.nav-link i {
    font-size: 0.9rem;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-light);
    background: rgba(14, 165, 233, 0.08);
}

.nav-link:hover i {
    color: var(--accent);
}

.nav-link.active {
    color: var(--primary);
    font-weight: 600;
    background: rgba(26, 77, 140, 0.08);
}

.nav-link.active i {
    color: var(--accent);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 10px 22px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    outline: none;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-sm {
    padding: 7px 15px;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1.05rem;
    border-radius: var(--radius-lg);
}

.btn-primary {
    background: var(--accent-gradient);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
}

.btn-secondary {
    background: #ffffff;
    color: var(--primary);
    border: 1px solid var(--border-medium);
    box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
    background: var(--bg-muted);
    border-color: var(--primary-light);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--accent);
    border: 1.5px solid var(--accent);
}

.btn-outline:hover {
    background: var(--accent);
    color: #ffffff;
}

.btn-telegram {
    background: linear-gradient(135deg, #229ED9, #179cde);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(34, 158, 217, 0.3);
}

.btn-telegram:hover {
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(34, 158, 217, 0.45);
}

.btn-gold {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
}

.btn-gold:hover {
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: #ffffff;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--primary);
    cursor: pointer;
    padding: 6px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-wrapper {
    position: relative;
    padding: 70px 0 80px 0;
    overflow: hidden;
    background: radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.12) 0%, rgba(248, 250, 252, 0) 60%),
                radial-gradient(circle at 10% 80%, rgba(37, 99, 235, 0.08) 0%, rgba(248, 250, 252, 0) 50%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
    align-items: center;
}

.hero-content h1 {
    font-size: 2.8rem;
    color: var(--primary);
    margin-bottom: 20px;
    line-height: 1.25;
}

.hero-content h1 span.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.hero-content p.hero-desc {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.hero-cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 36px;
}

.hero-features-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.hero-feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.hero-feature-item i {
    color: var(--emerald);
    font-size: 1.1rem;
}

/* Hero Visual / Card Showcase */
.hero-visual {
    position: relative;
}

.hero-card-stack {
    position: relative;
    background: #ffffff;
    border-radius: var(--radius-xl);
    padding: 24px;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(226, 232, 240, 0.8);
}

.hero-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-subtle);
}

.hero-card-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
}

.comparison-box {
    margin-bottom: 18px;
    padding: 16px;
    border-radius: var(--radius-md);
    background: var(--bg-muted);
}

.comparison-box.highlight {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(37, 99, 235, 0.05));
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.comparison-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.progress-track {
    height: 10px;
    background: #e2e8f0;
    border-radius: 6px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    border-radius: 6px;
    transition: width 1s ease-in-out;
}

.progress-bar-fill.high {
    width: 95%;
    background: linear-gradient(90deg, #3b82f6, #0ea5e9);
}

.progress-bar-fill.low {
    width: 30%;
    background: #94a3b8;
}

.hero-floating-stat {
    position: absolute;
    bottom: -20px;
    left: -20px;
    background: #ffffff;
    border-radius: var(--radius-lg);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-subtle);
    animation: floatUpDown 4s ease-in-out infinite;
}

.hero-floating-stat i {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(16, 185, 129, 0.12);
    color: var(--emerald);
    font-size: 1.2rem;
}

@keyframes floatUpDown {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* ==========================================================================
   Feature Cards & Grid
   ========================================================================== */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.card {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(14, 165, 233, 0.3);
}

.card-icon {
    width: 58px;
    height: 58px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 22px;
    transition: var(--transition);
}

.card:hover .card-icon {
    transform: scale(1.08);
}

.card-icon.blue {
    background: rgba(37, 99, 235, 0.1);
    color: #2563eb;
}

.card-icon.teal {
    background: rgba(13, 148, 136, 0.1);
    color: #0d9488;
}

.card-icon.rose {
    background: rgba(225, 29, 72, 0.1);
    color: #e11d48;
}

.card-icon.amber {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.card-title {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: var(--primary);
}

.card-desc {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.65;
    margin-bottom: 20px;
    flex-grow: 1;
}

/* ==========================================================================
   Product Showcase & Tabs System
   ========================================================================== */
.product-hero-banner {
    background: linear-gradient(135deg, #0f294a 0%, #1a4d8c 100%);
    color: #ffffff;
    padding: 60px 0;
    text-align: center;
}

.product-hero-banner h1 {
    color: #ffffff;
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.product-hero-banner p {
    color: #cbd5e1;
    font-size: 1.15rem;
    max-width: 700px;
    margin: 0 auto;
}

.product-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 40px;
    align-items: start;
    margin-top: 40px;
}

/* Product Sidebar Nav */
.product-sidebar {
    position: sticky;
    top: 96px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.product-nav-item {
    background: #ffffff;
    border-radius: var(--radius-md);
    padding: 16px 20px;
    border: 1.5px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.product-nav-item:hover {
    border-color: var(--border-medium);
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

.product-nav-item.active {
    border-color: var(--accent);
    background: linear-gradient(90deg, rgba(14, 165, 233, 0.08), rgba(255, 255, 255, 1));
    box-shadow: var(--shadow-md);
}

.product-nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--accent);
}

.product-nav-item[data-target="pane-qs"].active::before { background: var(--color-qs); }
.product-nav-item[data-target="pane-model"].active::before { background: var(--color-model); }
.product-nav-item[data-target="pane-rebar"].active::before { background: var(--color-rebar); }
.product-nav-item[data-target="pane-bundle"].active::before { background: var(--color-bundle); }

.nav-item-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.nav-item-info {
    flex-grow: 1;
}

.nav-item-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-item-tag {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.nav-item-price {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--primary);
}

/* Bundle Highlight Card in Sidebar */
.bundle-sidebar-card {
    background: linear-gradient(135deg, #0f294a, #1a4d8c);
    color: #ffffff;
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-top: 10px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.bundle-sidebar-card h4 {
    color: #ffffff;
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.bundle-price-box {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin: 12px 0;
}

.bundle-old-price {
    text-decoration: line-through;
    color: #94a3b8;
    font-size: 1.1rem;
}

.bundle-new-price {
    font-size: 1.8rem;
    font-weight: 800;
    color: #38bdf8;
}

/* Product Detail Pane */
.product-panes {
    position: relative;
}

.detail-pane {
    display: none;
    animation: fadeIn 0.35s ease;
}

.detail-pane.active {
    display: block;
}

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

.pane-card {
    background: #ffffff;
    border-radius: var(--radius-xl);
    padding: 36px;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
    margin-bottom: 30px;
}

.pane-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 28px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-subtle);
}

.pane-header-title {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 6px;
}

.pane-price-badge {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent);
    padding: 6px 18px;
    background: rgba(14, 165, 233, 0.1);
    border-radius: var(--radius-md);
    border: 1px solid rgba(14, 165, 233, 0.2);
}

/* Media Showcase (Single & 3 Screens Side-by-Side) */
.screens-row-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin: 28px 0;
}

.screen-card {
    background: #0f172a;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.screen-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
    border-color: rgba(14, 165, 233, 0.45);
}

.screen-card-topbar {
    background: #1e293b;
    padding: 10px 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.screen-dots {
    display: flex;
    align-items: center;
    gap: 5px;
    flex-shrink: 0;
}

.screen-dots .dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    display: inline-block;
}

.screen-dots .dot.red { background: #ef4444; }
.screen-dots .dot.yellow { background: #f59e0b; }
.screen-dots .dot.green { background: #10b981; }

.screen-title {
    color: #e2e8f0;
    font-size: 0.82rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    align-items: center;
    gap: 6px;
}

.screen-title i {
    color: var(--accent);
    font-size: 0.75rem;
}

.screen-card-body {
    background: #090d16;
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    cursor: zoom-in;
    position: relative;
}

.screen-card-body img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.screen-card:hover .screen-card-body img {
    transform: scale(1.04);
}

.screen-card-body::after {
    content: '\f00e';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(15, 23, 42, 0.7);
    color: #ffffff;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
}

.screen-card:hover .screen-card-body::after {
    opacity: 1;
}

.screen-card-caption {
    padding: 12px 14px;
    background: #1e293b;
    color: #cbd5e1;
    font-size: 0.82rem;
    line-height: 1.45;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.screen-card-caption strong {
    color: #38bdf8;
}

.media-showcase {
    margin: 28px 0;
    background: #0f172a;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.showcase-display {
    position: relative;
    width: 100%;
    min-height: 380px;
    max-height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #090d16;
}

.showcase-display img {
    width: 100%;
    height: 100%;
    max-height: 480px;
    object-fit: contain;
}

.showcase-tabs {
    display: flex;
    background: #1e293b;
    padding: 8px 12px;
    gap: 8px;
    overflow-x: auto;
}

.showcase-tab-btn {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: none;
    color: #94a3b8;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 6px;
}

.showcase-tab-btn:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.08);
}

.showcase-tab-btn.active {
    color: #ffffff;
    background: var(--accent);
}

/* Feature Grid inside Pane */
.feature-list-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.feature-box {
    padding: 20px;
    background: var(--bg-muted);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    display: flex;
    gap: 16px;
}

.feature-box-icon {
    font-size: 1.35rem;
    color: var(--accent);
    margin-top: 2px;
}

.feature-box-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 6px;
}

.feature-box-text {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Target Audience Cards */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.audience-card {
    background: #ffffff;
    padding: 18px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    text-align: center;
}

.audience-card i {
    font-size: 1.8rem;
    color: var(--primary-light);
    margin-bottom: 10px;
}

.audience-card h5 {
    font-size: 1rem;
    margin-bottom: 6px;
}

.audience-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Services Section & Lightbox
   ========================================================================== */
.service-item-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin-bottom: 40px;
    transition: var(--transition);
}

.service-item-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(14, 165, 233, 0.3);
}

.service-item-card:nth-child(even) {
    direction: rtl;
}

.service-item-card:nth-child(even) .service-item-content {
    direction: ltr;
}

.service-item-gallery {
    position: relative;
    height: 100%;
    min-height: 320px;
    background: #0f172a;
    overflow: hidden;
}

.service-gallery-main {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
    cursor: pointer;
}

.service-item-card:hover .service-gallery-main {
    transform: scale(1.04);
}

.service-gallery-thumbs {
    position: absolute;
    bottom: 12px;
    left: 12px;
    right: 12px;
    display: flex;
    gap: 8px;
    z-index: 5;
}

.service-thumb {
    width: 60px;
    height: 45px;
    border-radius: 6px;
    object-fit: cover;
    cursor: pointer;
    border: 2px solid rgba(255, 255, 255, 0.6);
    opacity: 0.8;
    transition: var(--transition-fast);
}

.service-thumb:hover, .service-thumb.active {
    border-color: var(--accent);
    opacity: 1;
    transform: scale(1.08);
}

.service-item-content {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.service-item-title {
    font-size: 1.6rem;
    color: var(--primary);
    margin-bottom: 14px;
}

.service-item-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 20px;
    line-height: 1.65;
}

.service-checklist {
    margin-bottom: 24px;
}

.service-checklist li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.service-checklist li i {
    color: var(--emerald);
    font-size: 1rem;
}

/* ==========================================================================
   About Page Components
   ========================================================================== */
.about-hero {
    background: linear-gradient(135deg, rgba(15, 41, 74, 0.96), rgba(26, 77, 140, 0.92)),
                url('../images/service_pic1.jpg') center/cover no-repeat;
    color: #ffffff;
    padding: 80px 0;
    text-align: center;
}

.about-hero h1 {
    color: #ffffff;
    font-size: 2.8rem;
    margin-bottom: 14px;
}

.about-hero p {
    color: #e2e8f0;
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.value-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition);
}

.value-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.value-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    margin: 0 auto 20px auto;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
}

/* ==========================================================================
   Contact Page & Form
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
}

.contact-info-card {
    background: #ffffff;
    border-radius: var(--radius-xl);
    padding: 36px;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    margin-bottom: 26px;
}

.contact-info-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(14, 165, 233, 0.1);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-info-text h4 {
    font-size: 1.05rem;
    margin-bottom: 4px;
}

.contact-info-text p, .contact-info-text a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.social-links-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin-top: 30px;
}

.social-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    background: var(--bg-muted);
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition-fast);
}

.social-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xs);
}

.social-btn.telegram:hover { background: #229ED9; color: #ffffff; }
.social-btn.facebook:hover { background: #1877F2; color: #ffffff; }
.social-btn.youtube:hover { background: #FF0000; color: #ffffff; }
.social-btn.tiktok:hover { background: #000000; color: #ffffff; }

.contact-form-card {
    background: #ffffff;
    border-radius: var(--radius-xl);
    padding: 36px;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border-medium);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    transition: var(--transition-fast);
    background: #ffffff;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.map-wrapper {
    margin-top: 40px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-subtle);
    height: 400px;
}

.map-wrapper iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background: var(--bg-dark);
    color: #94a3b8;
    padding: 70px 0 30px 0;
    border-top: 1px solid #1e293b;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-brand h3 {
    color: #ffffff;
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.footer-brand p {
    color: #94a3b8;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer-col h4 {
    color: #ffffff;
    font-size: 1.1rem;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 32px;
    height: 2px;
    background: var(--accent);
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #94a3b8;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent);
    transform: translateX(4px);
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid #1e293b;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.9rem;
}

/* ==========================================================================
   Floating Widgets (Telegram, Phone, Back-to-Top)
   ========================================================================== */
.floating-widgets {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 999;
}

.floating-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.35rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}

.floating-btn:hover {
    transform: scale(1.1);
    color: #ffffff;
}

.btn-float-telegram {
    background: linear-gradient(135deg, #229ED9, #179cde);
}

.btn-float-top {
    background: var(--primary);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.btn-float-top.visible {
    opacity: 1;
    visibility: visible;
}

/* ==========================================================================
   Modal / Lightbox
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
}

.modal-box {
    background: #ffffff;
    border-radius: var(--radius-xl);
    max-width: 520px;
    width: 100%;
    padding: 32px;
    position: relative;
    box-shadow: var(--shadow-xl);
    text-align: center;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.modal-close-btn {
    position: absolute;
    top: 18px;
    right: 18px;
    background: var(--bg-muted);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 1.2rem;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close-btn:hover {
    color: var(--rose);
}

/* Lightbox for Images */
.lightbox-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.92);
    z-index: 3000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.lightbox-modal.active {
    display: flex;
}

.lightbox-img {
    max-width: 90vw;
    max-height: 85vh;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .product-layout {
        grid-template-columns: 1fr;
    }
    .product-sidebar {
        position: static;
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 10px;
    }
    .product-nav-item {
        min-width: 220px;
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        padding: 50px 0;
    }
    .navbar {
        height: 68px;
    }
    .nav-menu {
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-medium);
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        transition: transform 0.3s ease;
        gap: 8px;
    }
    .nav-menu.open {
        transform: translateY(0);
    }
    .mobile-toggle {
        display: block;
    }
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .hero-content h1 {
        font-size: 2.1rem;
    }
    .grid-3, .grid-2, .grid-4 {
        grid-template-columns: 1fr;
    }
    .service-item-card {
        grid-template-columns: 1fr;
    }
    .service-item-card:nth-child(even) {
        direction: ltr;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .feature-list-grid {
        grid-template-columns: 1fr;
    }
    .audience-grid {
        grid-template-columns: 1fr;
    }
    .screens-row-3 {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .hero-floating-stat {
        position: static;
        margin-top: 14px;
    }
}

@media (min-width: 769px) and (max-width: 1100px) {
    .screens-row-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}