/* CSS Variables for Theme Switching */
:root {
    /* Dark Mode Colors - Khaki AI Theme (Default) */
    --bg-primary: #2c2416;
    --bg-secondary: #3d3528;
    --bg-tertiary: #4a4235;
    --text-primary: #f5f5dc;
    --text-secondary: #e8e6d9;
    --text-muted: #c4b7a6;
    --border-color: #5a4d3a;
    --accent-color: #cd853f; /* Peru for dark mode */
    --accent-hover: #daa520;
    --accent-light: #3d3528;
    --shadow-sm: 0 1px 2px 0 rgb(205 133 63 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(205 133 63 / 0.15), 0 2px 4px -2px rgb(205 133 63 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(205 133 63 / 0.2), 0 4px 6px -4px rgb(205 133 63 / 0.15);
    --shadow-xl: 0 20px 25px -5px rgb(205 133 63 / 0.25), 0 8px 10px -6px rgb(205 133 63 / 0.2);
    --gradient-primary: linear-gradient(135deg, #cd853f 0%, #daa520 100%); /* Peru to Goldenrod */
    --gradient-secondary: linear-gradient(135deg, #a0522d 0%, #8b4513 100%); /* Saddle Brown to Saddle Brown */
    --gradient-accent: linear-gradient(135deg, #cd853f 0%, #6b8e23 100%); /* Peru to Olive Drab */
    --ai-cyan: #cd853f;
    --ai-magenta: #a0522d;
    --ai-green: #6b8e23;
    --ai-purple: #8b4513;
    --ai-orange: #daa520;
    --neon-glow: 0 0 20px rgba(205, 133, 63, 0.5);
    --neon-glow-strong: 0 0 30px rgba(205, 133, 63, 0.8);
}

/* Light Mode Colors - Khaki AI Theme */
[data-theme="light"] {
    --bg-primary: #f5f5dc;
    --bg-secondary: #e8e6d9;
    --bg-tertiary: #d4d1c7;
    --text-primary: #2c2416;
    --text-secondary: #5a4d3a;
    --text-muted: #8b7355;
    --border-color: #c4b7a6;
    --accent-color: #8b7355; /* Khaki Brown */
    --accent-hover: #6b5b47; /* Darker Khaki */
    --accent-light: #f0ede6; /* Light Khaki Background */
    --shadow-sm: 0 1px 2px 0 rgb(139 115 85 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(139 115 85 / 0.15), 0 2px 4px -2px rgb(139 115 85 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(139 115 85 / 0.2), 0 4px 6px -4px rgb(139 115 85 / 0.15);
    --shadow-xl: 0 20px 25px -5px rgb(139 115 85 / 0.25), 0 8px 10px -6px rgb(139 115 85 / 0.2);
    --gradient-primary: linear-gradient(135deg, #8b7355 0%, #6b5b47 100%); /* Khaki Gradient */
    --gradient-secondary: linear-gradient(135deg, #a0522d 0%, #8b4513 100%); /* Saddle Brown Gradient */
    --gradient-accent: linear-gradient(135deg, #8b7355 0%, #cd853f 100%); /* Khaki to Peru */
    --ai-cyan: #8b7355;
    --ai-magenta: #a0522d;
    --ai-green: #6b8e23;
    --ai-purple: #8b4513;
    --ai-orange: #cd853f;
    --neon-glow: 0 0 20px rgba(139, 115, 85, 0.3);
    --neon-glow-strong: 0 0 30px rgba(139, 115, 85, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(139, 115, 85, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(160, 82, 45, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(107, 142, 35, 0.05) 0%, transparent 50%);
}

/* Arabic Font Support */
[data-lang="ar"] {
    font-family: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

[data-lang="ar"] h1, [data-lang="ar"] h2, [data-lang="ar"] h3, [data-lang="ar"] h4, [data-lang="ar"] h5, [data-lang="ar"] h6 {
    font-family: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: 600;
}

[data-lang="ar"] .hero-title {
    font-family: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: 800;
}

[data-lang="ar"] .hero-subtitle {
    font-family: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: 600;
}

[data-lang="ar"] .section-title {
    font-family: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: 700;
}

[data-lang="ar"] .skill-category-title {
    font-family: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: 600;
}

[data-lang="ar"] .timeline-title {
    font-family: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: 600;
}

[data-lang="ar"] .btn {
    font-family: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: 500;
}

[data-lang="ar"] .nav-link {
    font-family: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: 500;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Animated Background */
.animated-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.code-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    color: var(--ai-cyan);
    pointer-events: none;
}

.code-line {
    position: absolute;
    white-space: nowrap;
    animation: float 20s infinite linear;
    opacity: 0.8;
    text-shadow: 0 0 10px var(--ai-cyan);
}

.code-line:nth-child(1) { top: 10%; left: 5%; animation-delay: 0s; color: var(--ai-cyan); }
.code-line:nth-child(2) { top: 15%; left: 15%; animation-delay: 2s; color: var(--ai-magenta); }
.code-line:nth-child(3) { top: 25%; left: 25%; animation-delay: 4s; color: var(--ai-green); }
.code-line:nth-child(4) { top: 35%; left: 35%; animation-delay: 6s; color: var(--ai-purple); }
.code-line:nth-child(5) { top: 45%; left: 45%; animation-delay: 8s; color: var(--ai-orange); }
.code-line:nth-child(6) { top: 55%; left: 55%; animation-delay: 10s; color: var(--ai-cyan); }
.code-line:nth-child(7) { top: 65%; left: 65%; animation-delay: 12s; color: var(--ai-magenta); }
.code-line:nth-child(8) { top: 75%; left: 75%; animation-delay: 14s; color: var(--ai-green); }
.code-line:nth-child(9) { top: 85%; left: 85%; animation-delay: 16s; color: var(--ai-purple); }
.code-line:nth-child(10) { top: 95%; left: 95%; animation-delay: 18s; color: var(--ai-orange); }
.code-line:nth-child(11) { top: 20%; left: 80%; animation-delay: 3s; color: var(--ai-cyan); }
.code-line:nth-child(12) { top: 30%; left: 90%; animation-delay: 5s; color: var(--ai-magenta); }
.code-line:nth-child(13) { top: 40%; left: 10%; animation-delay: 7s; color: var(--ai-green); }
.code-line:nth-child(14) { top: 50%; left: 20%; animation-delay: 9s; color: var(--ai-purple); }
.code-line:nth-child(15) { top: 60%; left: 30%; animation-delay: 11s; color: var(--ai-orange); }

@keyframes float {
    0% {
        transform: translateX(-100vw) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.8;
    }
    90% {
        opacity: 0.8;
    }
    100% {
        transform: translateX(100vw) rotate(360deg);
        opacity: 0;
    }
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-element {
    position: absolute;
    font-size: 2rem;
    color: var(--ai-cyan);
    opacity: 0.3;
    animation: floatElement 15s infinite ease-in-out;
    filter: drop-shadow(0 0 10px currentColor);
}

.floating-element:nth-child(1) { top: 20%; left: 10%; animation-delay: 0s; color: var(--ai-cyan); }
.floating-element:nth-child(2) { top: 30%; left: 80%; animation-delay: 3s; color: var(--ai-magenta); }
.floating-element:nth-child(3) { top: 60%; left: 20%; animation-delay: 6s; color: var(--ai-green); }
.floating-element:nth-child(4) { top: 70%; left: 70%; animation-delay: 9s; color: var(--ai-purple); }
.floating-element:nth-child(5) { top: 40%; left: 50%; animation-delay: 12s; color: var(--ai-orange); }
.floating-element:nth-child(6) { top: 80%; left: 90%; animation-delay: 15s; color: var(--ai-cyan); }

@keyframes floatElement {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.3;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 0.7;
    }
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(139, 115, 85, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(160, 82, 45, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(107, 142, 35, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 60% 60%, rgba(139, 69, 19, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(44, 36, 22, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: var(--neon-glow);
}

[data-theme="light"] .header {
    background-color: rgba(245, 245, 220, 0.95);
}

/* Language Toggle Button */
.language-toggle {
    background: var(--accent-color);
    color: var(--bg-primary);
    border: none;
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-right: 12px;
}

.language-toggle:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--neon-glow);
}

.language-toggle i {
    font-size: 16px;
}

.language-text {
    font-weight: 600;
}

/* RTL Support */
[data-lang="ar"] {
    direction: rtl;
    text-align: right;
}

[data-lang="ar"] .nav-menu {
    flex-direction: row-reverse;
}

[data-lang="ar"] .nav-controls {
    flex-direction: row-reverse;
}

[data-lang="ar"] .language-toggle {
    margin-right: 0;
    margin-left: 12px;
}

[data-lang="ar"] .hero-content {
    flex-direction: row-reverse;
}

[data-lang="ar"] .about-features {
    flex-direction: row-reverse;
}

[data-lang="ar"] .skills-grid {
    direction: rtl;
}

[data-lang="ar"] .timeline::before {
    right: 20px;
    left: auto;
}

[data-lang="ar"] .timeline-marker {
    right: 12px;
    left: auto;
}

[data-lang="ar"] .timeline-content {
    margin-right: 60px;
    margin-left: 0;
    text-align: right;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: var(--neon-glow);
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover {
    color: var(--ai-cyan);
    transform: translateY(-2px);
    text-shadow: var(--neon-glow);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: width 0.3s ease;
    box-shadow: var(--neon-glow);
}

.nav-link:hover::after {
    width: 100%;
}

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

.theme-toggle, .mobile-menu-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.theme-toggle:hover, .mobile-menu-toggle:hover {
    color: var(--ai-cyan);
    background-color: var(--accent-light);
    transform: scale(1.1);
    box-shadow: var(--neon-glow);
}

.mobile-menu-toggle {
    display: none;
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0.05;
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    background: var(--gradient-accent);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1rem;
    animation: pulse 2s infinite;
    box-shadow: var(--neon-glow);
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: var(--neon-glow);
    }
    50% {
        transform: scale(1.05);
        box-shadow: var(--neon-glow-strong);
    }
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.1;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: var(--neon-glow);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--ai-cyan);
    margin-bottom: 0.5rem;
    font-weight: 600;
    text-shadow: var(--neon-glow);
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--ai-cyan);
    line-height: 1;
    text-shadow: var(--neon-glow);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.hero-contact {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.contact-item:hover {
    color: var(--ai-cyan);
    transform: translateX(5px);
    text-shadow: var(--neon-glow);
}

.contact-item i {
    color: var(--ai-cyan);
    width: 20px;
    text-shadow: var(--neon-glow);
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 0.75rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-accent);
    color: white;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--ai-cyan);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--neon-glow-strong);
}

.btn-secondary {
    background: transparent;
    color: var(--ai-cyan);
    border: 2px solid var(--ai-cyan);
}

.btn-secondary:hover {
    background: var(--ai-cyan);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--neon-glow-strong);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-container {
    position: relative;
}

.profile-image {
    width: 350px;
    height: 350px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--ai-cyan);
    box-shadow: var(--shadow-xl);
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.profile-image:hover {
    transform: scale(1.05) rotate(5deg);
    box-shadow: var(--neon-glow-strong);
}

.image-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: var(--gradient-accent);
    border-radius: 50%;
    opacity: 0.3;
    filter: blur(40px);
    animation: glow 3s ease-in-out infinite alternate;
    z-index: 1;
}

@keyframes glow {
    from {
        opacity: 0.3;
        transform: translate(-50%, -50%) scale(1);
    }
    to {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

/* Sections */
.section {
    padding: 6rem 0;
    position: relative;
}

.section:nth-child(even) {
    background-color: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
    position: relative;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: var(--neon-glow);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* About Section */
.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-text {
    text-align: center;
    margin-bottom: 3rem;
}

.about-text p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-primary);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.05;
    z-index: -1;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--neon-glow);
    border-color: var(--ai-cyan);
}

.feature-item i {
    font-size: 2.5rem;
    color: var(--ai-cyan);
    margin-bottom: 1rem;
    text-shadow: var(--neon-glow);
}

.feature-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    box-shadow: var(--neon-glow);
}

.skill-category:hover::before {
    transform: scaleX(1);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--neon-glow);
    border-color: var(--ai-cyan);
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.skill-category-header i {
    font-size: 1.5rem;
    color: var(--ai-cyan);
    text-shadow: var(--neon-glow);
}

.skill-category-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.skill-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-badge {
    background: var(--gradient-accent);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid var(--ai-cyan);
}

.skill-badge:hover {
    transform: scale(1.05) rotate(2deg);
    box-shadow: var(--neon-glow);
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-accent);
    transform: translateX(-50%);
    box-shadow: var(--neon-glow);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.timeline-item:nth-child(even) {
    animation-delay: 0.2s;
}

.timeline-item:nth-child(odd) {
    animation-delay: 0.4s;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    top: 0;
    width: 20px;
    height: 20px;
    background: var(--gradient-accent);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 2;
    box-shadow: var(--neon-glow);
}

.timeline-content {
    position: relative;
    width: 45%;
    padding: 2rem;
    background: var(--bg-primary);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-3px);
    box-shadow: var(--neon-glow);
    border-color: var(--ai-cyan);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 0;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 55%;
}

.timeline-header {
    margin-bottom: 1rem;
}

.timeline-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-company {
    display: block;
    color: var(--ai-cyan);
    font-weight: 500;
    margin-bottom: 0.25rem;
    text-shadow: var(--neon-glow);
}

.timeline-duration {
    display: block;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

.timeline-projects {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.timeline-projects h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.timeline-projects ul {
    list-style: none;
    padding-left: 0;
}

.timeline-projects li {
    color: var(--text-secondary);
    padding: 0.25rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.timeline-projects li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--ai-cyan);
    text-shadow: var(--neon-glow);
}

/* Education Section */
.education-card {
    display: flex;
    align-items: center;
    gap: 2rem;
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    max-width: 600px;
    margin: 0 auto;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.education-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.05;
    z-index: -1;
}

.education-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--neon-glow);
    border-color: var(--ai-cyan);
}

.education-icon {
    font-size: 3rem;
    color: var(--ai-cyan);
    text-shadow: var(--neon-glow);
}

.education-degree {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.education-school {
    color: var(--ai-cyan);
    font-weight: 500;
    margin-bottom: 0.25rem;
    text-shadow: var(--neon-glow);
}

.education-duration {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Certifications Section */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.certification-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.certification-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-secondary);
    opacity: 0.05;
    z-index: -1;
}

.certification-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--neon-glow);
    border-color: var(--ai-magenta);
}

.certification-icon {
    font-size: 2.5rem;
    color: var(--ai-cyan);
    margin-bottom: 1rem;
    text-shadow: var(--neon-glow);
}

.certification-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.certification-platform {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Projects Section */
.project-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.project-tab {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    padding: 12px 24px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 16px;
}

.project-tab:hover {
    background: var(--accent-color);
    color: var(--bg-primary);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--neon-glow);
}

.project-tab.active {
    background: var(--accent-color);
    color: var(--bg-primary);
    border-color: var(--accent-color);
    box-shadow: var(--neon-glow);
}

.project-tab i {
    font-size: 18px;
}

.project-content {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.project-content.active {
    display: block;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.project-card {
    background: var(--bg-primary);
    border-radius: 24px;
    border: 2px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    overflow: visible;
    display: flex;
    flex-direction: column;
    box-shadow: 
        0 8px 25px rgba(0, 0, 0, 0.1),
        0 2px 8px rgba(0, 0, 0, 0.05);
    position: relative;
    backdrop-filter: blur(10px);
    margin-top: 60px;
    text-align: center;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    z-index: 2;
}

.project-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.15),
        0 0 0 2px var(--accent-color),
        0 0 30px rgba(139, 115, 85, 0.2);
    border-color: var(--accent-color);
}

.project-image {
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    width: 160px;
    height: 160px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease;
    border-radius: 50%;
    box-shadow: 
        0 12px 30px rgba(0, 0, 0, 0.2),
        0 4px 12px rgba(0, 0, 0, 0.1);
    border: 6px solid var(--bg-primary);
    z-index: 10;
}

.project-card:hover .project-image {
    transform: translateX(-50%) scale(1.05);
    background: linear-gradient(135deg, var(--accent-light), var(--bg-secondary));
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 8px 20px rgba(0, 0, 0, 0.15);
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    transition: all 0.4s ease;
}

.project-card:hover .project-img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    width: 160px;
    height: 160px;
    background: linear-gradient(135deg, 
        rgba(139, 115, 85, 0.95), 
        rgba(160, 82, 45, 0.95));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.4s ease;
    backdrop-filter: blur(5px);
    border-radius: 50%;
    z-index: 15;
}

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

.project-link {
    color: white;
    font-size: 22px;
    padding: 16px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
    transform: scale(0.7);
}

.project-card:hover .project-link {
    transform: scale(1);
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

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

.project-overlay {
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 25px;
    backdrop-filter: blur(5px);
}

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

.project-link {
    color: white;
    font-size: 24px;
    padding: 12px;
    border-radius: 50%;
    background: var(--accent-color);
    transition: all 0.3s ease;
}

.project-link:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

.project-info {
    padding: 1.5rem;
    padding-top: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex: 1;
    background: var(--bg-primary);
    position: relative;
    border-radius: 24px;
}

.project-info::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--border-color) 50%, 
        transparent 100%);
}

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: var(--neon-glow);
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
    font-size: 0.9rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: auto;
}

.tech-tag {
    background: var(--accent-light);
    color: var(--accent-color);
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 11px;
    font-weight: 600;
    border: 2px solid var(--accent-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tech-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.2), 
        transparent);
    transition: left 0.5s ease;
}

.tech-tag:hover {
    background: var(--accent-color);
    color: var(--bg-primary);
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(139, 115, 85, 0.3);
}

.tech-tag:hover::before {
    left: 100%;
}

.project-placeholder {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--bg-primary);
    border-radius: 20px;
    border: 2px dashed var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    min-height: 300px;
}

.project-placeholder:hover {
    border-color: var(--accent-color);
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.project-placeholder i {
    font-size: 4rem;
    color: var(--accent-color);
    opacity: 0.7;
    transition: all 0.3s ease;
}

.project-placeholder:hover i {
    opacity: 1;
    transform: scale(1.1);
}

.project-placeholder h3 {
    color: var(--text-primary);
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.project-placeholder p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    margin: 0;
    max-width: 250px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* RTL Support for Projects */
[data-lang="ar"] .project-tabs {
    flex-direction: row-reverse;
}

[data-lang="ar"] .project-tech {
    flex-direction: row-reverse;
}

/* Languages Section */
.languages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 600px;
    margin: 0 auto;
}

.language-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.language-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-accent);
    opacity: 0.05;
    z-index: -1;
}

.language-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--neon-glow);
    border-color: var(--ai-green);
}

.language-icon {
    font-size: 2rem;
    color: var(--ai-cyan);
    margin-bottom: 1rem;
    text-shadow: var(--neon-glow);
}

.language-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.language-level {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.3;
    box-shadow: var(--neon-glow);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: var(--bg-primary);
    color: var(--text-secondary);
    border-radius: 50%;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-accent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.social-link:hover::before {
    opacity: 1;
}

.social-link:hover {
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--neon-glow);
    border-color: var(--ai-cyan);
}

.social-link i {
    position: relative;
    z-index: 1;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.875rem;
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .profile-image {
        width: 250px;
        height: 250px;
    }
    
    .image-glow {
        width: 300px;
        height: 300px;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-marker {
        left: 20px;
    }
    
    .timeline-content {
        width: calc(100% - 60px);
        margin-left: 60px !important;
    }
    
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 60px !important;
    }
    
    .education-card {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .certifications-grid {
        grid-template-columns: 1fr;
    }
    
    .languages-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1rem;
        margin: 2rem 1rem;
    }
    
    .project-card {
        border-radius: 16px;
        margin-top: 50px;
    }
    
    .project-image {
        width: 140px;
        height: 140px;
        top: -50px;
    }
    
    .project-overlay {
        width: 140px;
        height: 140px;
        top: -50px;
    }
    
    .project-info {
        padding: 1.25rem;
        padding-top: 0.5rem;
        gap: 0.75rem;
    }
    
    .project-title {
        font-size: 1.1rem;
        margin-top: 0.75rem;
        margin-bottom: 0.25rem;
    }
    
    .project-description {
        font-size: 0.95rem;
        -webkit-line-clamp: 2;
    }
    
    .tech-tag {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .project-tabs {
        flex-direction: column;
        align-items: center;
    }
    
    .project-tab {
        width: 100%;
        max-width: 200px;
        justify-content: center;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .nav {
        padding: 1rem;
    }
    
    .hero {
        padding: 6rem 0 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .profile-image {
        width: 200px;
        height: 200px;
    }
    
    .image-glow {
        width: 250px;
        height: 250px;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .container {
        padding: 0 0.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin: 1.5rem 0.5rem;
    }
    
    .project-card {
        border-radius: 12px;
        margin-top: 40px;
    }
    
    .project-image {
        width: 120px;
        height: 120px;
        top: -40px;
    }
    
    .project-overlay {
        width: 120px;
        height: 120px;
        top: -40px;
    }
    
    .project-info {
        padding: 1.25rem;
        padding-top: 2rem;
        gap: 0.5rem;
    }
    
    .project-title {
        font-size: 1.2rem;
    }
    
    .project-description {
        font-size: 0.9rem;
        -webkit-line-clamp: 2;
    }
    
    .tech-tag {
        padding: 4px 8px;
        font-size: 11px;
    }
}

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Smooth scrolling for older browsers */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}