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

:root {
    /* Light Theme */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --secondary: #8b5cf6;
    --accent: #06b6d4;
    
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

html.dark-mode,
body.dark-mode {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    
    --border-light: #334155;
    --border-medium: #475569;
    
    --primary: #60a5fa;
    --primary-hover: #93c5fd;
    --secondary: #a78bfa;
    --accent: #22d3ee;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.5);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    font-family: var(--font-sans);
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.5rem;
}

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-family: var(--font-sans);
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-light);
}

.btn-secondary:hover {
    border-color: var(--border-medium);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.125rem;
}

.btn-full {
    width: 100%;
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-light);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.9);
    transition: var(--transition);
}

.dark-mode .navbar {
    background-color: rgba(15, 23, 42, 0.9);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    font-family: var(--font-sans);
}

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

.logo-mark {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.25rem;
    transition: var(--transition);
}

.logo-mark:hover {
    transform: rotate(15deg) scale(1.1);
}

.logo-text {
    display: flex;
    flex-direction: column;
    font-family: var(--font-sans);
}

.logo-title {
    font-weight: 700;
    font-size: 1.25rem;
    font-family: var(--font-sans);
}

.logo-sub {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    font-family: var(--font-sans);
}

.nav-links {
    display: flex;
    gap: 32px;
    font-family: var(--font-sans);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 0;
    position: relative;
    font-family: var(--font-sans);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

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

/* Updated Navigation Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    font-family: var(--font-sans);
}

/* Switcher Container */
.switcher-container {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: 8px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    font-family: var(--font-sans);
}

.switcher-container:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* Theme Switcher */
.theme-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    min-width: 100px;
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
    font-family: var(--font-sans);
}

.theme-switcher:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.theme-icon {
    position: relative;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sun-icon, .moon-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sun-icon {
    opacity: 1;
}

.moon-icon {
    opacity: 0;
}

.dark-mode .sun-icon {
    opacity: 0;
    transform: translate(-50%, -50%) rotate(90deg);
}

.dark-mode .moon-icon {
    opacity: 1;
    transform: translate(-50%, -50%) rotate(0deg);
}

.theme-text {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    font-family: var(--font-sans);
}

/* Language Switcher */
.language-switcher {
    position: relative;
    min-width: 120px;
    font-family: var(--font-sans);
}

.current-lang {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border-light);
    gap: 8px;
    font-family: var(--font-sans);
}

.current-lang:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.lang-code {
    font-weight: 700;
    font-size: 0.875rem;
    color: var(--text-primary);
    font-family: var(--font-sans);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    min-width: 160px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
    overflow: hidden;
}

.language-switcher:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Mobile/Click open support */
.language-switcher.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-light);
    font-family: var(--font-sans);
}

.lang-option:last-child {
    border-bottom: none;
}

.lang-option:hover {
    background: var(--bg-tertiary);
}

.lang-flag {
    font-size: 1.25rem;
    line-height: 1;
    font-family: var(--font-sans);
}

.lang-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
    font-family: var(--font-sans);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-direction: column;
    gap: 4px;
    transition: var(--transition);
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 16px;
    padding: 24px;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    animation: slideDown 0.3s ease;
    font-family: var(--font-sans);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-menu.active {
    display: flex;
}

.mobile-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 12px 0;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-light);
    font-family: var(--font-sans);
}

.mobile-link:last-child {
    border-bottom: none;
}

.mobile-link:hover {
    color: var(--text-primary);
    padding-left: 12px;
}

/* Hero Section */
.hero {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, transparent 100%);
    overflow: hidden;
    font-family: var(--font-sans);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    font-family: var(--font-sans);
}

.hero-content {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.2s;
    font-family: var(--font-sans);
}

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

.hero-badge {
    margin-bottom: 24px;
}

.badge-text {
    display: inline-block;
    padding: 8px 16px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    animation: pulse 2s infinite;
    font-family: var(--font-sans);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.2);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(59, 130, 246, 0);
    }
}

.hero-title {
    margin-bottom: 24px;
    font-family: var(--font-sans);
}

.highlight {
    color: var(--primary);
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 30%;
    background-color: var(--primary);
    opacity: 0.1;
    z-index: -1;
    border-radius: 4px;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 500px;
    line-height: 1.7;
    font-family: var(--font-sans);
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
    font-family: var(--font-sans);
}

.stat-item:nth-child(1) { animation-delay: 0.4s; }
.stat-item:nth-child(2) { animation-delay: 0.6s; }
.stat-item:nth-child(3) { animation-delay: 0.8s; }

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
    font-family: var(--font-sans);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-top: 8px;
    font-family: var(--font-sans);
}

.hero-visual {
    position: relative;
    opacity: 0;
    transform: translateX(30px);
    animation: fadeInRight 0.8s ease forwards;
    animation-delay: 0.4s;
}

@keyframes fadeInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.visual-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-xl);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    font-family: var(--font-sans);
}

.visual-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    opacity: 0.8;
}

.visual-card:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0) translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-light);
}

.card-dots {
    display: flex;
    gap: 8px;
}

.card-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--border-light);
    transition: var(--transition);
}

.card-dots span:nth-child(1) {
    background-color: var(--error);
}

.card-dots span:nth-child(2) {
    background-color: var(--warning);
}

.card-dots span:nth-child(3) {
    background-color: var(--success);
}

.visual-card:hover .card-dots span {
    transform: scale(1.2);
}

.card-title {
    font-weight: 600;
    color: var(--text-primary);
    font-family: var(--font-sans);
}

.code-preview {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    overflow-x: auto;
    font-family: 'SF Mono', monospace;
    position: relative;
}

.code-preview pre {
    margin: 0;
    font-family: inherit;
    font-size: 0.875rem;
    line-height: 1.6;
}

.code-preview code {
    color: var(--text-secondary);
}

.code-preview::after {
    content: '</>';
    position: absolute;
    top: 8px;
    right: 12px;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    opacity: 0.5;
}

.tech-stack {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tech-tag {
    padding: 6px 12px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.tech-tag:hover {
    background-color: var(--primary);
    color: white;
    transform: translateY(-2px);
}

/* Sections */
.section-header {
    text-align: center;
    margin-bottom: 64px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
    font-family: var(--font-sans);
}

.section-title {
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
    font-family: var(--font-sans);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
}

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

/* Projects */
.projects {
    padding: 120px 0;
    background-color: var(--bg-secondary);
    font-family: var(--font-sans);
}

.projects-filter {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.2s;
    font-family: var(--font-sans);
}

.search-input, .filter-select {
    flex: 1;
    padding: 12px 20px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: var(--transition);
}

.search-input:focus, .filter-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.filter-select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%230f172a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 16px;
    font-family: var(--font-sans);
}

.dark-mode .filter-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f8fafc' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 32px;
}

.project-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
    font-family: var(--font-sans);
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: var(--transition);
}

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

.project-category {
    display: inline-block;
    padding: 6px 12px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 20px;
    font-family: var(--font-sans);
}

.project-title {
    font-size: 1.5rem;
    margin-bottom: 12px;
    font-family: var(--font-sans);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
    font-family: var(--font-sans);
}

.project-tech {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.project-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}

.project-year {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    font-family: var(--font-sans);
}

.project-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.project-link:hover {
    color: var(--primary-hover);
    gap: 12px;
}

/* Skills */
.skills {
    padding: 120px 0;
    font-family: var(--font-sans);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 48px;
}

.skill-category {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
    font-family: var(--font-sans);
}

.skill-category:nth-child(1) { animation-delay: 0.1s; }
.skill-category:nth-child(2) { animation-delay: 0.2s; }
.skill-category:nth-child(3) { animation-delay: 0.3s; }

.skill-category:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.category-title {
    margin-bottom: 24px;
    font-size: 1.25rem;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 12px;
    font-family: var(--font-sans);
}

.category-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
}

.skill-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
    padding: 8px;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
}

.skill-item:hover {
    background-color: var(--bg-tertiary);
    transform: translateX(4px);
}

.skill-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    color: var(--primary);
}

.skill-name {
    font-weight: 500;
    color: var(--text-primary);
    font-family: var(--font-sans);
}

/* About */
.about {
    padding: 120px 0;
    background-color: var(--bg-secondary);
    font-family: var(--font-sans);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
    font-family: var(--font-sans);
}

.about-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
    font-family: var(--font-sans);
}

.about-highlights {
    margin-top: 32px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    padding: 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-family: var(--font-sans);
}

.highlight-item:hover {
    background-color: var(--bg-tertiary);
    transform: translateX(4px);
}

.highlight-item svg {
    color: var(--success);
    flex-shrink: 0;
}

/* Brand Logo Container */
.brand-logo-container {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    border: 2px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-xl);
    padding: 60px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    font-family: var(--font-sans);
}

.brand-logo-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    opacity: 0.8;
}

.brand-logo-container:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.brand-logo {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    text-shadow: 0 4px 20px rgba(59, 130, 246, 0.2);
    position: relative;
    display: inline-block;
    font-family: var(--font-sans);
}

.brand-logo::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.brand-logo-container:hover .brand-logo::after {
    transform: scaleX(1);
}

.brand-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 8px 20px;
    background-color: var(--bg-tertiary);
    border-radius: 100px;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.brand-logo-container:hover .brand-subtitle {
    background-color: var(--primary);
    color: white;
    transform: translateY(-2px);
}

/* Contact */
.contact {
    padding: 120px 0;
    font-family: var(--font-sans);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
    font-family: var(--font-sans);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
    font-family: var(--font-sans);
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
    font-family: var(--font-sans);
}

.info-item:nth-child(1) { animation-delay: 0.1s; }
.info-item:nth-child(2) { animation-delay: 0.2s; }
.info-item:nth-child(3) { animation-delay: 0.3s; }

.info-item:hover {
    background-color: var(--bg-tertiary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.info-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    flex-shrink: 0;
    transition: var(--transition);
}

.info-item:hover .info-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.info-content h4 {
    margin-bottom: 8px;
    font-size: 1.125rem;
    color: var(--text-primary);
    font-family: var(--font-sans);
}

.info-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    font-family: var(--font-sans);
}

.contact-form {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 48px;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.contact-form:hover {
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 24px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
    font-family: var(--font-sans);
}

.form-group:nth-child(1) { animation-delay: 0.2s; }
.form-group:nth-child(2) { animation-delay: 0.3s; }
.form-group:nth-child(3) { animation-delay: 0.4s; }

.form-input, .form-textarea {
    width: 100%;
    padding: 16px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: var(--transition);
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    font-family: var(--font-sans);
}

/* Footer */
.footer {
    padding: 64px 0;
    background-color: var(--bg-tertiary);
    border-top: 1px solid var(--border-light);
    font-family: var(--font-sans);
}

.footer-content {
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
    font-family: var(--font-sans);
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    font-family: var(--font-sans);
}

.footer-text {
    color: var(--text-secondary);
    max-width: 400px;
    margin: 0 auto 32px;
    font-size: 1rem;
    line-height: 1.6;
    font-family: var(--font-sans);
}

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

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease;
}

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

.modal-content {
    position: relative;
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlide 0.3s ease;
    box-shadow: var(--shadow-xl);
    font-family: var(--font-sans);
}

@keyframes modalSlide {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-close {
    position: absolute;
    top: 24px;
    right: 24px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: var(--transition);
    z-index: 1;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-sans);
}

.modal-close:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transform: rotate(90deg);
}

.modal-header {
    padding: 48px 48px 32px;
    border-bottom: 1px solid var(--border-light);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(139, 92, 246, 0.05));
    font-family: var(--font-sans);
}

.modal-badge {
    display: inline-block;
    padding: 6px 12px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 16px;
    font-family: var(--font-sans);
}

.modal-title {
    font-size: 2rem;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-family: var(--font-sans);
}

.modal-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    font-family: var(--font-sans);
}

.modal-body {
    padding: 32px 48px 48px;
    font-family: var(--font-sans);
}

.modal-description {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-family: var(--font-sans);
}

.modal-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-bottom: 32px;
}

.detail-section h3 {
    margin-bottom: 16px;
    font-size: 1.25rem;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 8px;
    font-family: var(--font-sans);
}

.detail-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
}

.tech-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.feature-list {
    list-style: none;
    padding: 0;
    font-family: var(--font-sans);
}

.feature-list li {
    margin-bottom: 12px;
    padding-left: 24px;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.6;
    font-family: var(--font-sans);
}

.feature-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    background-color: var(--primary);
    border-radius: 50%;
}

.modal-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Adjust for RTL in language switcher */
.lang-ar .language-switcher .lang-dropdown {
    right: auto;
    left: 0;
}

/* RTL Support for Arabic */
.lang-ar {
    direction: rtl;
    font-family: var(--font-sans) !important;
}

.lang-ar .navbar,
.lang-ar .nav-links,
.lang-ar .hero-actions,
.lang-ar .projects-filter,
.lang-ar .skills-grid,
.lang-ar .about-grid,
.lang-ar .contact-grid,
.lang-ar .footer-content {
    direction: rtl;
    font-family: var(--font-sans) !important;
}

.lang-ar .nav-logo {
    margin-right: 0;
    margin-left: auto;
}

.lang-ar .nav-actions {
    margin-right: auto;
    margin-left: 0;
}

.lang-ar .hero-container {
    direction: rtl;
}

.lang-ar .hero-content {
    text-align: right;
}

.lang-ar .hero-actions {
    justify-content: flex-start;
}

.lang-ar .section-header {
    text-align: right;
}

.lang-ar .projects-filter {
    flex-direction: row-reverse;
}

.lang-ar .project-footer {
    flex-direction: row-reverse;
}

.lang-ar .brand-logo-container {
    text-align: center;
}

.lang-ar .brand-logo::after {
    left: 0;
    right: 0;
    margin: 0 auto;
}

.lang-ar .highlight-item {
    flex-direction: row-reverse;
}

.lang-ar .highlight-item svg {
    order: 1;
}

.lang-ar .info-item {
    flex-direction: row-reverse;
}

.lang-ar .info-content {
    text-align: right;
}

.lang-ar .form-input,
.lang-ar .form-textarea {
    text-align: right;
}

.lang-ar .feature-list li {
    padding-left: 0;
    padding-right: 24px;
}

.lang-ar .feature-list li::before {
    left: auto;
    right: 0;
}

.lang-ar .modal-close {
    right: auto;
    left: 24px;
}

/* Adjust for RTL layout */
.lang-ar .visual-card {
    transform: perspective(1000px) rotateY(5deg) rotateX(5deg);
}

.lang-ar .visual-card:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0) translateY(-8px);
}

/* Mobile switchers inside burger menu */
.mobile-switchers {
    width: 100%;
    margin-top: 16px;
    font-family: var(--font-sans);
}
.mobile-switchers .switcher-container {
    width: 100%;
    font-family: var(--font-sans);
}

/* Responsive */
@media (max-width: 1024px) {
    h1 {
        font-size: 2.75rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .hero-container,
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .modal-details {
        grid-template-columns: 1fr;
    }
    
    .switcher-container {
        gap: 8px;
        padding: 6px;
    }
    
    .theme-switcher {
        min-width: 90px;
        padding: 6px 10px;
    }
    
    .language-switcher {
        min-width: 100px;
    }
    
    .lang-option {
        padding: 10px 14px;
    }
    
    .brand-logo {
        font-size: 2.75rem;
    }
    
    .brand-logo-container {
        padding: 40px 30px;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-actions {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .hero {
        padding: 80px 0;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .projects-filter {
        flex-direction: column;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-header,
    .modal-body {
        padding: 32px 24px;
    }
    
    .mobile-menu {
        padding-bottom: 20px;
    }
    
    .switcher-container {
        flex-direction: column;
        gap: 8px;
        margin-top: 16px;
        width: 100%;
    }
    
    .theme-switcher,
    .language-switcher {
        width: 100%;
    }
    
    .lang-dropdown {
        width: 100%;
        right: 0;
        left: 0;
    }
    
    .lang-ar .switcher-container {
        flex-direction: column;
    }
    
    .lang-ar .mobile-menu {
        text-align: right;
    }
    
    .brand-logo {
        font-size: 2.25rem;
    }
    
    .brand-logo-container {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2.25rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .visual-card {
        padding: 24px;
    }
    
    .contact-form {
        padding: 32px 24px;
    }
    
    .modal-content {
        margin: 10px;
        max-height: 80vh;
    }
    
    .modal-actions {
        flex-direction: column;
    }
    
    .brand-logo {
        font-size: 2rem;
    }
    
    .brand-subtitle {
        font-size: 1rem;
    }
}

/* Animation for switchers */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.theme-switcher:active,
.current-lang:active {
    animation: pulse 0.3s ease;
}

/* Enhanced hover effects */
.theme-switcher,
.current-lang {
    position: relative;
    overflow: hidden;
}

.theme-switcher::before,
.current-lang::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: var(--primary);
    opacity: 0.1;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.theme-switcher:hover::before,
.current-lang:hover::before {
    width: 200%;
    height: 200%;
}

/* Language switcher arrow animation */
.language-switcher:hover .current-lang svg {
    transform: rotate(180deg);
}

.language-switcher .current-lang svg {
    transition: transform 0.3s ease;
}