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

/* Dark Theme (Default) - Red, White & Blue */
:root,
[data-theme="dark"] {
    --primary: #3b82f6;
    --primary-light: #60a5fa;
    --primary-dark: #2563eb;
    --accent: #dc2626;
    --accent-2: #ef4444;
    --secondary: #94a3b8;
    --dark: #0a0a0f;
    --dark-light: #13131a;
    --dark-medium: #1a1a24;
    --light: #f8fafc;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --text-light: #64748b;
    --border: rgba(255, 255, 255, 0.1);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --gradient-1: linear-gradient(135deg, #dc2626 0%, #ffffff 50%, #3b82f6 100%);
    --gradient-2: linear-gradient(135deg, #3b82f6 0%, #dc2626 100%);
    --shadow-color: rgba(59, 130, 246, 0.2);
    --bg-primary: #0a0a0f;
    --bg-secondary: #13131a;
    --nav-bg: rgba(10, 10, 15, 0.85);
}

/* Light Theme - Red, White & Blue */
[data-theme="light"] {
    --primary: #2563eb;
    --primary-light: #3b82f6;
    --primary-dark: #1d4ed8;
    --accent: #dc2626;
    --accent-2: #b91c1c;
    --secondary: #64748b;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --dark-medium: #334155;
    --light: #ffffff;
    --text: #1e293b;
    --text-muted: #475569;
    --text-light: #64748b;
    --border: rgba(0, 0, 0, 0.1);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.1);
    --gradient-1: linear-gradient(135deg, #dc2626 0%, #ffffff 50%, #2563eb 100%);
    --gradient-2: linear-gradient(135deg, #2563eb 0%, #dc2626 100%);
    --shadow-color: rgba(37, 99, 235, 0.15);
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --nav-bg: rgba(255, 255, 255, 0.85);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg-primary);
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.preloader-icon {
    width: 50px;
    height: 50px;
    border: 3px solid var(--glass-border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-1);
    z-index: 9999;
    width: 0%;
    transition: width 0.1s ease;
}

/* Particle Canvas */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav.scrolled {
    background: var(--nav-bg);
    box-shadow: 0 4px 30px var(--shadow-color);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
}

.logo-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

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

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width 0.3s ease;
}

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

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

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

/* Theme Toggle */
.theme-toggle {
    width: 44px;
    height: 44px;
    border: none;
    background: var(--glass-bg);
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
    transition: all 0.3s ease;
    border: 1px solid var(--glass-border);
}

.theme-toggle:hover {
    background: var(--primary);
    color: white;
    transform: rotate(15deg);
}

.sun-icon {
    display: none;
}

[data-theme="dark"] .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: none;
}

[data-theme="light"] .moon-icon {
    display: block;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

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

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

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

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: var(--bg-primary);
    z-index: 999;
    transition: right 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    text-align: center;
}

.mobile-link {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    padding: 10rem 0 6rem;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: float 8s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 10%;
    right: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(220, 38, 38, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -30px); }
}

.hero-content {
    max-width: 900px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.6s ease forwards;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    line-height: 1.1;
    animation: fadeInUp 0.6s ease 0.1s forwards;
    opacity: 0;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradientShift 3s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: clamp(1.125rem, 3vw, 1.5rem);
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-weight: 500;
    animation: fadeInUp 0.6s ease 0.2s forwards;
    opacity: 0;
}

.typing-text {
    color: var(--accent);
}

.cursor {
    color: var(--primary);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    max-width: 700px;
    animation: fadeInUp 0.6s ease 0.3s forwards;
    opacity: 0;
}

.hero-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 4rem;
    animation: fadeInUp 0.6s ease 0.4s forwards;
    opacity: 0;
}

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    animation: fadeInUp 0.6s ease 0.5s forwards;
    opacity: 0;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

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

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    animation: bounce 2s ease-in-out infinite;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.5; transform: translateX(-50%) translateY(8px); }
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: #0a0a0f;
    position: relative;
    overflow: hidden;
    font-weight: 700;
}

.btn-primary::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;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px var(--shadow-color);
}

.btn-glow {
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { box-shadow: 0 0 20px rgba(59, 130, 246, 0.3); }
    to { box-shadow: 0 0 30px rgba(59, 130, 246, 0.5), 0 0 60px rgba(59, 130, 246, 0.2); }
}

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

.btn-secondary:hover {
    background: var(--glass-bg);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    padding: 0.875rem 1.25rem;
}

.btn-ghost:hover {
    color: var(--primary);
    background: var(--glass-bg);
}

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

.section-dark {
    background: var(--bg-secondary);
}

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

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text);
    letter-spacing: -0.02em;
}

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

/* Glass Card Effect */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.glass-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px var(--shadow-color);
}

/* Scroll Animations */
.slide-up {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

.slide-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in {
    opacity: 0;
    transition: opacity 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
}

.about-image-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-1);
    opacity: 0.1;
    z-index: 1;
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
}

.about-image-decoration {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 2px solid var(--primary);
    border-radius: 20px;
    top: 20px;
    left: 20px;
    z-index: -1;
}

.about-content h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text);
}

.about-content p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 2rem;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
}

.highlight-icon {
    font-size: 1.5rem;
}

.highlight-text {
    font-weight: 600;
    color: var(--text);
}

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

.skill-category {
    padding: 2rem;
}

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

.skill-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.skill-category h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
}

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

.tag {
    background: var(--glass-bg);
    color: var(--text);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

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

/* Skill Bars (Alternative) */
.skill-bar {
    margin-bottom: 1.5rem;
}

.skill-bar-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

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

.skill-bar-percent {
    color: var(--primary);
    font-weight: 600;
}

.skill-bar-track {
    height: 8px;
    background: var(--glass-bg);
    border-radius: 4px;
    overflow: hidden;
}

.skill-bar-fill {
    height: 100%;
    background: var(--gradient-1);
    border-radius: 4px;
    transition: width 1s ease;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 2rem;
}

.project-card {
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.project-card:hover::before {
    transform: scaleX(1);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.project-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.project-links {
    display: flex;
    gap: 0.75rem;
}

.project-link-icon {
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.3s ease;
}

.project-link-icon:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.project-category {
    display: inline-block;
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 100px;
}

.project-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 1rem;
}

.project-description {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

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

.project-tech span {
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 0.25rem 0.75rem;
    background: var(--glass-bg);
    border-radius: 100px;
    font-weight: 500;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.project-link svg {
    transition: transform 0.3s ease;
}

.project-link:hover {
    gap: 0.75rem;
}

.project-link:hover svg {
    transform: translateX(4px);
}

/* Featured Project */
.featured-project {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.featured-project .project-image {
    border-radius: 16px;
    overflow: hidden;
}

.featured-project .project-image img {
    width: 100%;
    height: auto;
    transition: transform 0.5s ease;
}

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

/* Timeline */
.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 2px;
    height: 100%;
    background: var(--gradient-1);
    opacity: 0.3;
}

.timeline-item {
    display: grid;
    grid-template-columns: auto 120px 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    position: relative;
}

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

.timeline-marker {
    position: relative;
    display: flex;
    align-items: flex-start;
    padding-top: 0.5rem;
}

.marker-dot {
    width: 16px;
    height: 16px;
    background: var(--gradient-1);
    border-radius: 50%;
    position: relative;
    z-index: 1;
    margin-left: -7px;
}

.marker-dot.pulse {
    animation: markerPulse 2s ease-in-out infinite;
}

@keyframes markerPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4); }
    50% { box-shadow: 0 0 0 10px rgba(59, 130, 246, 0); }
}

.timeline-year {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--primary);
    padding-top: 0.5rem;
}

.timeline-content {
    padding: 1.5rem;
}

.timeline-content h3 {
    font-size: 1.25rem;
    color: var(--text);
    margin-bottom: 0.25rem;
    font-weight: 700;
}

.timeline-location {
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
}

.timeline-description {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 1.25rem;
    font-size: 1rem;
}

.timeline-content p {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.timeline-achievements {
    list-style: none;
    margin-bottom: 1.5rem;
    padding: 0;
}

.timeline-achievements li {
    color: var(--text-muted);
    line-height: 1.8;
    padding-left: 1.75rem;
    position: relative;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.timeline-achievements li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-size: 1.2rem;
    font-weight: bold;
}

.timeline-achievements li strong {
    color: var(--text);
    font-weight: 600;
}

.timeline-content ul {
    list-style: none;
    margin-bottom: 1rem;
}

.timeline-content ul li {
    color: var(--text-muted);
    line-height: 1.7;
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
}

.timeline-content ul li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.timeline-tags span {
    font-size: 0.75rem;
    color: var(--primary);
    padding: 0.25rem 0.75rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 100px;
    font-weight: 600;
}

/* Contact Section */
.contact-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
}

.profile-image-container {
    display: flex;
    justify-content: center;
    position: relative;
}

.profile-image-wrapper {
    position: relative;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    padding: 5px;
    background: var(--gradient-1);
    z-index: 1;
    box-sizing: border-box;
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    border-radius: 50%;
    display: block;
    background: var(--bg-primary);
    transition: transform 0.5s ease;
}

.profile-image-wrapper:hover .profile-image {
    transform: scale(1.02);
}

.profile-image-glow {
    position: absolute;
    width: 320px;
    height: 320px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--gradient-1);
    border-radius: 50%;
    opacity: 0.4;
    filter: blur(40px);
    z-index: 0;
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.2; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.1); }
}

.contact-grid {
    width: 100%;
    max-width: 800px;
}

.contact-intro {
    font-size: 1.25rem;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 3rem;
    line-height: 1.8;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text);
}

.contact-icon {
    font-size: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.contact-value {
    font-weight: 600;
    color: var(--text);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 100;
    box-shadow: 0 4px 20px var(--shadow-color);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px var(--shadow-color);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-brand .logo-text {
    font-size: 1.5rem;
    font-weight: 800;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

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

.footer-social a {
    width: 44px;
    height: 44px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-3px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-location {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .featured-project {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero {
        padding: 8rem 0 4rem;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .section {
        padding: 4rem 0;
    }

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

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

    .timeline::before {
        left: 7px;
    }

    .timeline-item {
        grid-template-columns: auto 1fr;
        gap: 1rem;
    }

    .timeline-year {
        display: none;
    }

    .timeline-content::before {
        content: attr(data-year);
        display: block;
        font-size: 0.875rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 0.5rem;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .scroll-indicator {
        display: none;
    }

    .about-highlights {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

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

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

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

    .slide-up {
        opacity: 1;
        transform: none;
    }

    html {
        scroll-behavior: auto;
    }
}

/* Print Styles */
@media print {
    .nav,
    .scroll-progress,
    .back-to-top,
    .scroll-indicator,
    #particles {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .section {
        padding: 2rem 0;
    }
}

/* ============================================
   Chatbot Styles
   ============================================ */

body.chatbot-open-mobile {
    overflow: hidden;
    position: fixed;
    width: 100%;
}

.chatbot-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
}

.chatbot-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border: none;
    color: white;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
    display: none;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.chatbot-toggle.show {
    display: flex;
}

.chatbot-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(59, 130, 246, 0.6);
}

.chatbot-toggle svg {
    width: 28px;
    height: 28px;
}

.chatbot-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 380px;
    height: 550px;
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: slideUp 0.3s ease;
}

.chatbot-window.minimized {
    display: none;
}

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

.chatbot-header {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    padding: 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: white;
}

.chatbot-header-info h3 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
}

.chatbot-status {
    font-size: 0.75rem;
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chatbot-status::before {
    content: '';
    width: 8px;
    height: 8px;
    background: #4ade80;
    border-radius: 50%;
    display: inline-block;
    animation: pulse 2s infinite;
}

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

.chatbot-close-btn {
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background 0.2s ease;
}

.chatbot-close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chatbot-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.chatbot-messages::-webkit-scrollbar {
    width: 6px;
}

.chatbot-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chatbot-messages::-webkit-scrollbar-thumb {
    background: rgba(59, 130, 246, 0.3);
    border-radius: 3px;
}

.chatbot-message {
    display: flex;
    gap: 0.75rem;
    animation: messageSlide 0.3s ease;
}

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

.user-message {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
}

.user-message .message-avatar {
    background: var(--text-muted);
}

.message-content {
    background: rgba(59, 130, 246, 0.1);
    padding: 0.875rem 1rem;
    border-radius: 12px;
    max-width: 75%;
}

.user-message .message-content {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
}

.message-content p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.chatbot-typing {
    display: flex;
    gap: 0.75rem;
}

.chatbot-typing .message-content {
    display: flex;
    gap: 0.25rem;
    padding: 1rem;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: typingDot 1.4s infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingDot {
    0%, 60%, 100% {
        transform: translateY(0);
    }
    30% {
        transform: translateY(-10px);
    }
}

.chatbot-input-container {
    padding: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    gap: 0.75rem;
}

.chatbot-input {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 0.875rem 1rem;
    color: var(--text);
    font-size: 0.9rem;
    outline: none;
    transition: all 0.2s ease;
}

.chatbot-input:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
}

.chatbot-send-btn {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border: none;
    color: white;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.chatbot-send-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.chatbot-send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

@media (max-width: 768px) {
    .chatbot-container {
        bottom: 0;
        right: 0;
        left: 0;
        top: 0;
    }

    .chatbot-window {
        position: fixed;
        bottom: 0;
        right: 0;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        max-width: 100%;
        border-radius: 0;
        z-index: 9999;
    }

    .chatbot-window.minimized {
        display: none;
    }

    .chatbot-toggle {
        position: fixed;
        bottom: 1rem;
        right: 1rem;
        width: 56px;
        height: 56px;
        z-index: 999;
    }

    .chatbot-messages {
        padding: 1rem;
    }

    .chatbot-input-container {
        padding: 1rem;
        padding-bottom: max(1rem, env(safe-area-inset-bottom));
    }
}