/* ============================================
   BBDO TECHNOLOGIES LLC — Design System
   Premium Enterprise Theme
   ============================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Cairo:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Primary Palette */
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;

    /* Accent */
    --accent-50: #fdf4ff;
    --accent-100: #fae8ff;
    --accent-200: #f5d0fe;
    --accent-300: #f0abfc;
    --accent-400: #e879f9;
    --accent-500: #d946ef;
    --accent-600: #c026d3;
    --accent-700: #a21caf;

    /* Neutral */
    --gray-50: #fafafa;
    --gray-100: #f4f4f5;
    --gray-200: #e4e4e7;
    --gray-300: #d4d4d8;
    --gray-400: #a1a1aa;
    --gray-500: #71717a;
    --gray-600: #52525b;
    --gray-700: #3f3f46;
    --gray-800: #27272a;
    --gray-900: #18181b;
    --gray-950: #09090b;

    /* Semantic */
    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;

    /* Light theme */
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-tertiary: #f4f4f5;
    --bg-elevated: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.7);
    --bg-glass-border: rgba(255, 255, 255, 0.2);
    --text-primary: #18181b;
    --text-secondary: #52525b;
    --text-tertiary: #71717a;
    --text-inverse: #ffffff;
    --border-color: #e4e4e7;
    --border-subtle: #f4f4f5;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.05);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
    --gradient-dark: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #3730a3 100%);
    --gradient-mesh: radial-gradient(at 40% 20%, hsla(240, 78%, 63%, 0.08) 0px, transparent 50%), radial-gradient(at 80% 0%, hsla(280, 78%, 63%, 0.06) 0px, transparent 50%), radial-gradient(at 0% 50%, hsla(250, 78%, 63%, 0.06) 0px, transparent 50%);
    --hero-gradient: linear-gradient(180deg, rgba(99,102,241,0.03) 0%, transparent 60%);
    --navbar-bg: rgba(255, 255, 255, 0.8);
    --card-bg: #ffffff;
    --code-bg: #f4f4f5;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-arabic: 'Cairo', 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --container-max: 1200px;
    --container-padding: 1.5rem;
    --section-padding: 6rem;
    --section-padding-sm: 4rem;

    /* Borders */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ============================================
   Dark Mode
   ============================================ */
[data-theme="dark"] {
    --bg-primary: #09090b;
    --bg-secondary: #18181b;
    --bg-tertiary: #1e1e23;
    --bg-elevated: #1c1c21;
    --bg-glass: rgba(24, 24, 27, 0.8);
    --bg-glass-border: rgba(63, 63, 70, 0.3);
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --text-inverse: #18181b;
    --border-color: #27272a;
    --border-subtle: #1e1e23;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -2px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.4), 0 4px 6px -4px rgba(0,0,0,0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.5), 0 8px 10px -6px rgba(0,0,0,0.3);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.2);
    --gradient-mesh: radial-gradient(at 40% 20%, hsla(240, 78%, 50%, 0.12) 0px, transparent 50%), radial-gradient(at 80% 0%, hsla(280, 78%, 50%, 0.08) 0px, transparent 50%), radial-gradient(at 0% 50%, hsla(250, 78%, 50%, 0.08) 0px, transparent 50%);
    --hero-gradient: linear-gradient(180deg, rgba(99,102,241,0.06) 0%, transparent 60%);
    --navbar-bg: rgba(9, 9, 11, 0.85);
    --card-bg: #18181b;
    --code-bg: #1e1e23;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* RTL: Arabic font */
[dir="rtl"] body,
[dir="rtl"] * {
    font-family: var(--font-arabic);
}

a {
    color: var(--primary-500);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-400);
}

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

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

/* ============================================
   Utilities
   ============================================ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--section-padding) 0;
    position: relative;
}

.section-sm {
    padding: var(--section-padding-sm) 0;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-500);
    margin-bottom: 1rem;
}

.section-label::before {
    content: '';
    width: 2rem;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
}

[dir="rtl"] .section-label::before {
    order: 2;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.7;
}

.text-center {
    text-align: center;
}

.text-center .section-subtitle {
    margin-left: auto;
    margin-right: auto;
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    line-height: 1.5;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
    color: #fff;
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-300);
    transform: translateY(-2px);
    color: var(--text-primary);
}

.btn-outline {
    background: transparent;
    color: var(--primary-500);
    border: 2px solid var(--primary-500);
}

.btn-outline:hover {
    background: var(--primary-500);
    color: #fff;
    transform: translateY(-2px);
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.05rem;
}

.btn-icon {
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border-radius: var(--radius-md);
}

.btn svg {
    width: 1.1em;
    height: 1.1em;
}

/* ============================================
   Navbar
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--navbar-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-subtle);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4.5rem;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.navbar-logo:hover {
    color: var(--text-primary);
}

.navbar-logo svg {
    width: 2rem;
    height: 2rem;
}

.navbar-logo .logo-dot {
    color: var(--primary-500);
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
}

.navbar-nav a {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.navbar-nav a:hover,
.navbar-nav a.active {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.theme-toggle,
.lang-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-elevated);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
}

.theme-toggle:hover,
.lang-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--primary-300);
}

.theme-toggle svg {
    width: 1.2rem;
    height: 1.2rem;
}

/* Mobile menu */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.5rem;
    background: none;
    border: none;
}

.mobile-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }

    .navbar-nav {
        position: fixed;
        top: 4.5rem;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 1rem;
        gap: 0.25rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .navbar-nav.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .navbar-nav a {
        padding: 0.75rem 1rem;
        width: 100%;
    }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 4.5rem;
    background: var(--hero-gradient);
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-mesh);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 780px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    animation: fadeInUp 0.6s ease-out;
}

.hero-badge .dot {
    width: 6px;
    height: 6px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-subtitle {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 580px;
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

/* Hero SVG Decoration */
.hero-visual {
    position: absolute;
    right: -5%;
    top: 50%;
    transform: translateY(-50%);
    width: 45%;
    max-width: 600px;
    opacity: 0.15;
    z-index: 1;
}

[dir="rtl"] .hero-visual {
    right: auto;
    left: -5%;
}

.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    top: 20%;
    right: 10%;
    z-index: 0;
    animation: float 6s ease-in-out infinite;
}

[dir="rtl"] .hero-glow {
    right: auto;
    left: 10%;
}

/* Page hero (smaller) */
.page-hero {
    padding: 8rem 0 4rem;
    background: var(--hero-gradient);
    position: relative;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-mesh);
    pointer-events: none;
}

.page-hero-content {
    position: relative;
    z-index: 2;
}

.page-hero .hero-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    position: relative;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

[data-theme="dark"] .card:hover {
    border-color: var(--primary-800);
}

.card-glass {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-color: var(--bg-glass-border);
}

.card-body {
    padding: 2rem;
}

.card-icon {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: var(--primary-50);
    color: var(--primary-500);
    margin-bottom: 1.25rem;
}

[data-theme="dark"] .card-icon {
    background: rgba(99, 102, 241, 0.1);
}

.card-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.card-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Project card */
.project-card {
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--project-color, var(--gradient-primary));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.project-card:hover::before {
    opacity: 1;
}

.project-card .card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-logo {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: #fff;
}

.project-name {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.project-domain {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-bottom: 1rem;
    font-family: var(--font-mono);
}

.project-desc {
    flex: 1;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.project-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-subtle);
}

.project-status {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--success);
}

.project-status .dot {
    width: 6px;
    height: 6px;
    background: currentColor;
    border-radius: 50%;
}

.project-link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-500);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.project-link svg {
    width: 1rem;
    height: 1rem;
    transition: transform var(--transition-fast);
}

.project-link:hover svg {
    transform: translateX(3px);
}

[dir="rtl"] .project-link:hover svg {
    transform: translateX(-3px);
}

/* Blog card */
.blog-card .card-image {
    height: 200px;
    background: var(--gradient-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.blog-card .card-image svg {
    width: 48px;
    height: 48px;
    opacity: 0.3;
    color: #fff;
}

.blog-card .card-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-bottom: 0.75rem;
}

.blog-card .card-meta .category {
    color: var(--primary-500);
    font-weight: 600;
}

.blog-card .card-title a {
    color: var(--text-primary);
}

.blog-card .card-title a:hover {
    color: var(--primary-500);
}

/* ============================================
   Grid Layouts
   ============================================ */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .grid-4 { grid-template-columns: 1fr; }
    .grid-3 { grid-template-columns: 1fr; }
    .grid-2 { grid-template-columns: 1fr; }
}

/* ============================================
   Stats Section
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stat-card {
    text-align: center;
    padding: 2.5rem 1.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-200);
}

.stat-number {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
}

.stat-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================
   Values Section
   ============================================ */
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .values-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .values-grid { grid-template-columns: 1fr; }
}

/* ============================================
   Timeline
   ============================================ */
.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
    transform: translateX(-50%);
}

[dir="rtl"] .timeline::before {
    left: auto;
    right: 50%;
    transform: translateX(50%);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: calc(50% + 2rem);
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: calc(50% + 2rem);
}

[dir="rtl"] .timeline-item {
    padding-right: 0;
    padding-left: calc(50% + 2rem);
}

[dir="rtl"] .timeline-item:nth-child(even) {
    padding-left: 0;
    padding-right: calc(50% + 2rem);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(50% - 6px);
    top: 0.5rem;
    width: 14px;
    height: 14px;
    background: var(--primary-500);
    border: 3px solid var(--bg-primary);
    border-radius: 50%;
    z-index: 1;
}

.timeline-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    max-width: 420px;
}

.timeline-year {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary-500);
    margin-bottom: 0.5rem;
}

.timeline-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .timeline::before {
        left: 1rem;
    }

    [dir="rtl"] .timeline::before {
        left: auto;
        right: 1rem;
    }

    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 3rem;
        padding-right: 0;
        justify-content: flex-start;
    }

    [dir="rtl"] .timeline-item,
    [dir="rtl"] .timeline-item:nth-child(even) {
        padding-left: 0;
        padding-right: 3rem;
    }

    .timeline-item::before {
        left: calc(1rem - 6px);
    }

    [dir="rtl"] .timeline-item::before {
        left: auto;
        right: calc(1rem - 6px);
    }
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    background: var(--gradient-dark);
    padding: 5rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
}

.cta-content {
    position: relative;
    z-index: 2;
}

.cta-section .section-title {
    color: #fff;
    max-width: 600px;
    margin: 0 auto 1rem;
}

.cta-section .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
    margin: 0 auto 2.5rem;
}

/* ============================================
   Contact Page
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
}

@media (max-width: 768px) {
    .contact-grid { grid-template-columns: 1fr; }
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    font-size: 0.95rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-elevated);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:focus,
.form-textarea:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.contact-info-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
}

.contact-info-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-info-item:last-child {
    margin-bottom: 0;
}

.contact-info-icon {
    width: 2.5rem;
    height: 2.5rem;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-50);
    color: var(--primary-500);
    border-radius: var(--radius-md);
}

[data-theme="dark"] .contact-info-icon {
    background: rgba(99, 102, 241, 0.1);
}

.contact-info-icon svg {
    width: 1.2rem;
    height: 1.2rem;
}

.contact-info-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.contact-info-value {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
}

.map-container {
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    margin-top: 2rem;
}

.map-container iframe {
    width: 100%;
    height: 300px;
    border: none;
}

/* Alert messages */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Social links */
.social-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--primary-500);
    border-color: var(--primary-500);
    color: #fff;
    transform: translateY(-2px);
}

.social-link svg {
    width: 1.2rem;
    height: 1.2rem;
}

/* ============================================
   Blog Page
   ============================================ */
.blog-grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
}

@media (max-width: 768px) {
    .blog-grid { grid-template-columns: 1fr; }
}

.blog-sidebar {
    position: sticky;
    top: 6rem;
    height: fit-content;
}

.sidebar-widget {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.sidebar-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.category-list {
    list-style: none;
}

.category-list li {
    margin-bottom: 0.25rem;
}

.category-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.category-list a:hover,
.category-list a.active {
    background: var(--bg-tertiary);
    color: var(--primary-500);
}

.category-count {
    font-size: 0.8rem;
    background: var(--bg-tertiary);
    padding: 0.1rem 0.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
}

.search-form {
    display: flex;
    gap: 0.5rem;
}

.search-form .form-input {
    flex: 1;
}

.search-form .btn {
    flex-shrink: 0;
}

/* Blog post page */
.blog-post-content {
    max-width: 720px;
    margin: 0 auto;
}

.blog-post-header {
    margin-bottom: 2.5rem;
}

.blog-post-meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-tertiary);
    margin-bottom: 1rem;
}

.blog-post-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.blog-post-body {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--text-primary);
}

.blog-post-body h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin: 2.5rem 0 1rem;
    letter-spacing: -0.01em;
}

.blog-post-body h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin: 2rem 0 0.75rem;
}

.blog-post-body p {
    margin-bottom: 1.25rem;
}

.blog-post-body ul, .blog-post-body ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

[dir="rtl"] .blog-post-body ul,
[dir="rtl"] .blog-post-body ol {
    padding-left: 0;
    padding-right: 1.5rem;
}

.blog-post-body li {
    margin-bottom: 0.5rem;
}

.blog-post-body code {
    background: var(--code-bg);
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.85em;
}

.blog-post-body blockquote {
    border-left: 3px solid var(--primary-500);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background: var(--bg-tertiary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--text-secondary);
}

[dir="rtl"] .blog-post-body blockquote {
    border-left: none;
    border-right: 3px solid var(--primary-500);
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 3rem;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.5rem;
    height: 2.5rem;
    padding: 0 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.pagination a:hover {
    background: var(--bg-tertiary);
    color: var(--primary-500);
    border-color: var(--primary-300);
}

.pagination .active {
    background: var(--primary-500);
    color: #fff;
    border-color: var(--primary-500);
}

/* ============================================
   Legal Pages
   ============================================ */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 0 5rem;
}

.legal-content h2 {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 2.5rem 0 1rem;
    color: var(--text-primary);
}

.legal-content p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.legal-content strong {
    color: var(--text-primary);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 3rem;
}

@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.footer-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-500);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

@media (max-width: 640px) {
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* ============================================
   Error Pages
   ============================================ */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
}

.error-code {
    font-size: 8rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 1rem;
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes pulse-dot {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.5); opacity: 0.5; }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

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

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Stagger children */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.15s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.25s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.3s; }

.stagger-children.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* Tech stack badges */
.tech-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.tech-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.tech-badge:hover {
    border-color: var(--primary-300);
    color: var(--primary-500);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.tech-badge svg {
    width: 1.2rem;
    height: 1.2rem;
}

/* ============================================
   Breadcrumb
   ============================================ */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-bottom: 1.5rem;
}

.breadcrumb a {
    color: var(--text-tertiary);
}

.breadcrumb a:hover {
    color: var(--primary-500);
}

.breadcrumb .separator {
    color: var(--text-tertiary);
    font-size: 0.7rem;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 640px) {
    .section {
        padding: 3.5rem 0;
    }

    .hero {
        min-height: auto;
        padding: 7rem 0 4rem;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }
}

/* Print */
@media print {
    .navbar, .footer, .cta-section {
        display: none;
    }
    body {
        background: #fff;
        color: #000;
    }
}