/* CSS Custom Properties - Dark Theme */
:root {
    /* Dark Theme Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-card: #1e1e1e;
    --bg-glass: rgba(255, 255, 255, 0.05);

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;

    /* Accent Colors */
    --accent-primary: #00d4ff;
    --accent-secondary: #0099cc;
    --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    --accent-glow: 0 0 20px rgba(0, 212, 255, 0.3);

    /* Status Colors */
    --success: #00ff88;
    --warning: #ffaa00;
    --error: #ff4444;

    /* Borders & Shadows */
    --border-primary: rgba(255, 255, 255, 0.1);
    --border-secondary: rgba(255, 255, 255, 0.05);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.2);

    /* Layout */
    --sidebar-width: 300px;
    --sidebar-collapsed: 80px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Font Families */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Z-Index */
    --z-sidebar: 1000;
    --z-mobile-toggle: 1001;
    --z-loading: 9999;
}

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

*::before,
*::after {
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}


/* Sidebar Navigation */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-primary);
    backdrop-filter: blur(20px);
    z-index: var(--z-sidebar);
    display: flex;
    flex-direction: column;
    padding: 2rem 0;
    transition: transform var(--transition-normal);
}

.sidebar-header {
    padding: 0 2rem 2rem;
    border-bottom: 1px solid var(--border-secondary);
}

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

.profile-image-container {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
}

.profile-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent-primary);
    transition: transform var(--transition-fast);
}

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

.status-indicator {
    position: absolute;
    bottom: 5px;
    right: 5px;
    width: 16px;
    height: 16px;
    background: var(--success);
    border: 3px solid var(--bg-secondary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.profile-name {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.profile-title {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.profile-location {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.profile-location i {
    color: var(--accent-primary);
}

/* Navigation Menu */
.nav-menu {
    flex: 1;
    list-style: none;
    padding: 2rem 0;
    overflow-y: auto;
}

.nav-menu::-webkit-scrollbar {
    width: 4px;
}

.nav-menu::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

.nav-menu::-webkit-scrollbar-thumb {
    background: var(--border-primary);
    border-radius: 2px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
    border-left: 3px solid transparent;
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    border-left-color: var(--accent-primary);
}

.nav-link.active {
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.1);
    border-left-color: var(--accent-primary);
}

.nav-link i {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

.nav-link span {
    font-weight: 500;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 1rem 2rem;
    border-top: 1px solid var(--border-secondary);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    border: 1px solid var(--border-primary);
}

.social-link:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.theme-toggle {
    display: flex;
    justify-content: center;
}

.theme-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    padding: 0.75rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-btn:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    transform: scale(1.05);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 1.5rem;
    left: 1.5rem;
    z-index: var(--z-mobile-toggle);
    flex-direction: column;
    width: 30px;
    height: 30px;
    cursor: pointer;
    padding: 5px 0;
    justify-content: space-between;
}

.mobile-menu-toggle span {
    display: block;
    height: 3px;
    width: 100%;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
}

.section {
    min-height: 100vh;
    padding: 4rem 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

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

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

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Mobile Profile (hidden on desktop) */
.mobile-profile {
    display: none;
}

/* Hero Section */
.hero {
    background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
}

.greeting {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.wave {
    animation: wave 2s ease-in-out infinite;
    transform-origin: 70% 70%;
}

@keyframes wave {
    0%, 100% { transform: rotate(0deg); }
    10%, 30% { transform: rotate(14deg); }
    20% { transform: rotate(-8deg); }
    40% { transform: rotate(-4deg); }
    50% { transform: rotate(10deg); }
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 3s ease-in-out infinite;
}

@keyframes gradient-shift {
    0%, 100% { filter: hue-rotate(0deg); }
    50% { filter: hue-rotate(20deg); }
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--bg-primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
}

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

.btn-outline:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
}

.floating-element {
    position: absolute;
    font-size: 2rem;
    color: var(--accent-primary);
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

.floating-element:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    top: 70%;
    right: 20%;
    animation-delay: 1s;
}

.floating-element:nth-child(3) {
    bottom: 30%;
    left: 20%;
    animation-delay: 2s;
}

.floating-element:nth-child(4) {
    top: 40%;
    right: 10%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    33% {
        transform: translateY(-20px) rotate(5deg);
    }
    66% {
        transform: translateY(-10px) rotate(-5deg);
    }
}

.code-snippet {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    max-width: 400px;
    font-family: var(--font-mono);
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-primary);
}

.code-dots {
    display: flex;
    gap: 0.5rem;
}

.code-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-muted);
}

.code-dots span:nth-child(1) { background: #ff5f56; }
.code-dots span:nth-child(2) { background: #ffbd2e; }
.code-dots span:nth-child(3) { background: #27ca3f; }

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

.code-content {
    padding: 1.5rem;
    font-size: 0.85rem;
    line-height: 1.6;
}

.code-line {
    margin-bottom: 0.5rem;
}

.code-line.indent {
    padding-left: 1.5rem;
}

.keyword { color: #ff79c6; }
.variable { color: #8be9fd; }
.property { color: #50fa7b; }
.string { color: #f1fa8c; }

/* About Section */
.about {
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

.text-block {
    margin-bottom: 2.5rem;
}

.text-block h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent-primary);
}

.text-block p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.1rem;
}

.about-visual {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.tech-stack,
.interests {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-primary);
}

.tech-stack h3,
.interests h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-size: 1.3rem;
}

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

.tech-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-primary);
    transition: all var(--transition-fast);
}

.tech-icon:hover {
    transform: translateY(-3px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.tech-icon i {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.tech-icon span {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: center;
}

.interest-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid var(--border-primary);
    transition: all var(--transition-fast);
}

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

.tag i {
    color: var(--accent-primary);
}

.tag:hover i {
    color: var(--bg-primary);
}

/* Experience Section */
.experience {
    background: var(--bg-primary);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent-gradient);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 4rem;
}

.timeline-marker {
    position: absolute;
    left: 21px;
    top: 0;
}

.timeline-dot {
    width: 18px;
    height: 18px;
    background: var(--accent-primary);
    border: 4px solid var(--bg-primary);
    border-radius: 50%;
    box-shadow: var(--shadow-glow);
}

.timeline-item.active .timeline-dot {
    background: var(--success);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
}

.timeline-content {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.timeline-content:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.timeline-header {
    margin-bottom: 1.5rem;
}

.timeline-header h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.company {
    color: var(--accent-primary);
    font-weight: 600;
    margin-bottom: 0.25rem;
    display: block;
}

.period {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.timeline-tasks {
    list-style: none;
    margin-bottom: 1.5rem;
}

.timeline-tasks li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.timeline-tasks li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
}

.timeline-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    padding: 0.25rem 0.75rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 15px;
    font-size: 0.8rem;
    border: 1px solid var(--border-primary);
}

/* Education Section */
.education {
    background: var(--bg-secondary);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    align-items: stretch;
}

.education-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.education-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-gradient);
}

.education-card.current::before {
    background: var(--success);
}

.education-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.education-icon {
    width: 60px;
    height: 60px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-primary);
}

.education-icon i {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.education-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.education-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    line-height: 1.3;
}

.institution {
    color: var(--accent-primary);
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 1rem;
}

.period {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 1rem;
    align-self: flex-start;
}

.status.in-progress {
    background: rgba(255, 170, 0, 0.2);
    color: var(--warning);
    border: 1px solid var(--warning);
}

.status.completed {
    background: rgba(0, 255, 136, 0.2);
    color: var(--success);
    border: 1px solid var(--success);
}

.status.transitioned {
    background: rgba(0, 212, 255, 0.2);
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

.description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* Skills Section */
.skills {
    background: var(--bg-primary);
}

.skills-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

.technical-skills h3,
.soft-skills h3 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.skills-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-item {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-primary);
    transition: all var(--transition-fast);
}

.skill-item:hover {
    transform: translateX(5px);
    border-color: var(--accent-primary);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.skill-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.skill-icon {
    font-size: 1.5rem;
    color: var(--accent-primary);
    width: 24px;
    text-align: center;
}

.skill-name {
    font-weight: 600;
    color: var(--text-primary);
}

.skill-percentage {
    color: var(--accent-primary);
    font-weight: 700;
    font-size: 1.1rem;
}

.skill-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 4px;
    width: 0;
    transition: width 2s ease-in-out;
    position: relative;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.qualities-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.quality-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-primary);
    transition: all var(--transition-fast);
}

.quality-item:hover {
    background: var(--bg-tertiary);
    transform: translateX(5px);
    border-color: var(--accent-primary);
}

.quality-item i {
    color: var(--accent-primary);
    font-size: 1.2rem;
    width: 20px;
    text-align: center;
}

.quality-item span {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Projects Section */
.projects {
    background: var(--bg-secondary);
}

.projects-grid {
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.project-card.featured {
    border: 2px solid var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.project-image {
    position: relative;
    height: 300px;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

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

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-radius: 50%;
    text-decoration: none;
    transition: all var(--transition-fast);
}

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

.project-mockup {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.mockup-browser {
    width: 100%;
    max-width: 300px;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-primary);
    overflow: hidden;
}

.browser-header {
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
}

.browser-dots {
    display: flex;
    gap: 0.5rem;
}

.browser-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted);
}

.browser-dots span:nth-child(1) { background: #ff5f56; }
.browser-dots span:nth-child(2) { background: #ffbd2e; }
.browser-dots span:nth-child(3) { background: #27ca3f; }

.browser-content {
    padding: 1rem;
    height: 150px;
}

.app-interface {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.app-header {
    padding: 0.5rem;
    background: var(--accent-primary);
    color: var(--bg-primary);
    text-align: center;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    margin-bottom: 0.75rem;
}

.app-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.meal-card {
    height: 20px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-primary);
}

.project-content {
    padding: 2rem;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.project-header h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.project-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--success);
    font-size: 0.9rem;
    font-weight: 600;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.status-indicator.active {
    background: var(--success);
    animation: pulse 2s infinite;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    padding: 0.25rem 0.75rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 15px;
    font-size: 0.8rem;
    border: 1px solid var(--border-primary);
}

.project-features h4 {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.project-features ul {
    list-style: none;
    margin-bottom: 2rem;
}

.project-features li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.project-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

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

/* Contact Section */
.contact {
    background: var(--bg-primary);
}

.contact-content {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.contact-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-primary);
    text-align: center;
    transition: all var(--transition-fast);
}

.contact-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.contact-icon i {
    font-size: 1.5rem;
    color: var(--bg-primary);
}

.contact-details h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-details p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.contact-action {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.contact-action:hover {
    color: var(--text-primary);
}

.contact-cta {
    background: var(--bg-card);
    padding: 3rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-primary);
    text-align: center;
}

.cta-content h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.cta-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Scroll Progress */
.scroll-progress {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    height: 4px;
    background: var(--bg-tertiary);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.scroll-progress.visible {
    opacity: 1;
}

.scroll-progress-bar {
    height: 100%;
    background: var(--accent-gradient);
    width: 0%;
    transition: width 0.1s ease;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--accent-gradient);
    color: var(--bg-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-glow);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
}

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

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

/* Responsive Design */
@media (max-width: 1100px) {
    .hero-buttons {
        justify-content: center;
    }
}

@media (max-width: 968px) {
    .mobile-menu-toggle {
        display: none;
    }

    .sidebar {
        display: none;
    }

    .main-content {
        margin-left: 0;
    }

    .scroll-progress {
        left: 0;
        width: 100%;
    }

    .mobile-profile {
        display: flex;
        justify-content: center;
        margin: 1.5rem 0;
    }

    .mobile-profile-image-container {
        position: relative;
        width: 120px;
        height: 120px;
    }

    .mobile-profile-img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        object-fit: cover;
        border: 3px solid var(--accent-primary);
        transition: transform var(--transition-fast);
        box-shadow: var(--shadow-glow);
    }

    .mobile-profile-img:hover {
        transform: scale(1.05);
    }

    .mobile-status-indicator {
        position: absolute;
        bottom: 8px;
        right: 8px;
        width: 20px;
        height: 20px;
        background: var(--success);
        border: 4px solid var(--bg-primary);
        border-radius: 50%;
        animation: pulse 2s infinite;
    }

    .section {
        padding: 3rem 1.5rem;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-stats {
        justify-content: center;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .tech-icons {
        grid-template-columns: repeat(2, 1fr);
    }

    .skills-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .education-grid {
        grid-template-columns: 1fr;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

    .contact-cta {
        padding: 2rem;
    }
}

@media (max-width: 640px) {
    .section {
        padding: 2rem 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }

    .tech-icons {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        padding-left: 3rem;
    }

    .timeline-marker {
        left: 11px;
    }

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

    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .mobile-menu-toggle,
    .scroll-progress,
    .back-to-top,
    .loading-screen {
        display: none !important;
    }

    .main-content {
        margin-left: 0 !important;
    }

    .section {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}