/* ============================================
   CSS Variables & Reset
   ============================================ */
:root {
    --primary: #6C63FF;
    --primary-dark: #5A52D5;
    --primary-light: #8B85FF;
    --accent: #00D4AA;
    --bg-dark: #0A0E27;
    --bg-card: #121638;
    --bg-card-hover: #1A1F4A;
    --bg-section: #0D1130;
    --text-primary: #FFFFFF;
    --text-secondary: #A8B2D1;
    --text-muted: #6B7394;
    --border: rgba(108, 99, 255, 0.15);
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(108, 99, 255, 0.2);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-secondary);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
}

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

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 14, 39, 0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: 2px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    position: relative;
    box-shadow: 0 4px 15px rgba(108, 99, 255, 0.4);
    transition: var(--transition);
}

.nav-logo:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 25px rgba(108, 99, 255, 0.55);
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 8px;
}

.nav-links a {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--text-primary);
    background: rgba(108, 99, 255, 0.1);
}

.nav-cta {
    background: var(--primary) !important;
    color: var(--text-primary) !important;
}

.nav-cta:hover {
    background: var(--primary-dark) !important;
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

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

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    gap: 8px;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-primary);
    box-shadow: 0 4px 20px rgba(108, 99, 255, 0.4);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(108, 99, 255, 0.5);
}

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

.btn-outline:hover {
    border-color: var(--primary);
    background: rgba(108, 99, 255, 0.08);
    transform: translateY(-2px);
}

.btn-download {
    background: linear-gradient(135deg, var(--accent), #00B894);
    color: var(--text-primary);
    border: none;
    box-shadow: 0 4px 20px rgba(0, 212, 170, 0.35);
}

.btn-download:hover {
    background: linear-gradient(135deg, #00B894, var(--accent));
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 212, 170, 0.5);
}

.btn-download svg {
    flex-shrink: 0;
}

.btn-full {
    width: 100%;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 0 60px;
    overflow: hidden;
}

.hero-bg-shapes {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 0;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: var(--primary);
    top: -10%;
    right: -5%;
    animation: float 8s ease-in-out infinite;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: var(--accent);
    bottom: -10%;
    left: -5%;
    animation: float 10s ease-in-out infinite reverse;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: #FF6B6B;
    top: 40%;
    left: 30%;
    animation: float 12s ease-in-out infinite;
}

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

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-greeting {
    font-size: 1.1rem;
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.hero-name {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.1;
    margin-bottom: 12px;
}

.hero-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin-bottom: 32px;
}

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

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    display: inline;
}

.stat-plus {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    display: block;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Code Window */
.code-window {
    background: #1a1e3a;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: var(--shadow), var(--shadow-glow);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 20px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #FF5F57; }
.dot.yellow { background: #FEBC2E; }
.dot.green { background: #28C840; }

.code-title {
    margin-left: auto;
    font-size: 0.8rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-muted);
}

.code-body {
    padding: 24px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.code-body .kw { color: #C792EA; }
.code-body .cls { color: #FFCB6B; }
.code-body .str { color: #C3E88D; }
.code-body .fn { color: #82AAFF; }

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.78rem;
    letter-spacing: 1px;
    transition: var(--transition);
}

.scroll-indicator:hover { color: var(--primary); }

.scroll-arrow {
    width: 20px;
    height: 30px;
    border: 2px solid var(--text-muted);
    border-radius: 10px;
    position: relative;
}

.scroll-arrow::after {
    content: '';
    width: 3px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 2px;
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(8px); opacity: 0.3; }
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: 100px 0;
}

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

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 16px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
    margin: 16px auto 0;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 48px;
}

/* ============================================
   About Section
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    margin-top: 48px;
    align-items: start;
}

.about-text p {
    margin-bottom: 16px;
    font-size: 1.02rem;
}

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

.about-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    transition: var(--transition);
}

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

.info-icon {
    font-size: 1.8rem;
    margin-bottom: 8px;
}

.info-card h3 {
    font-size: 0.82rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.info-card p {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

/* ============================================
   Timeline / Experience
   ============================================ */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 48px auto 0;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    border-radius: 1px;
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-marker {
    position: absolute;
    left: -34px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg-dark);
    border: 3px solid var(--primary);
    z-index: 1;
}

.timeline-marker.current {
    background: var(--primary);
    box-shadow: 0 0 0 6px rgba(108, 99, 255, 0.2);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.timeline-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.timeline-content h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.timeline-content h4 {
    font-size: 0.95rem;
    color: var(--primary-light);
    font-weight: 500;
    margin-bottom: 8px;
}

.timeline-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.timeline-list {
    list-style: none;
    padding: 0;
    margin: 0 0 4px 0;
}

.timeline-list li {
    position: relative;
    padding-left: 18px;
    margin-bottom: 6px;
    font-size: 0.92rem;
}

.timeline-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.timeline-tags span {
    background: rgba(108, 99, 255, 0.12);
    color: var(--primary-light);
    font-size: 0.78rem;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: 20px;
}

/* ============================================
   Projects
   ============================================ */
.project-filter {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 8px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn.active,
.filter-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary);
    box-shadow: var(--shadow), var(--shadow-glow);
}

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

.project-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.project-status {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 4px 10px;
    border-radius: 20px;
}

.project-status.active {
    background: rgba(0, 212, 170, 0.15);
    color: var(--accent);
}

.project-card h3 {
    font-size: 1.15rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.project-card p {
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.project-tech span {
    background: rgba(108, 99, 255, 0.1);
    color: var(--primary-light);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 3px 10px;
    border-radius: 6px;
}

/* ============================================
   Skills
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.skill-category {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.skill-category:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.skill-cat-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.skill-category h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.skill-item {
    margin-bottom: 18px;
}

.skill-name {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 500;
}

.skill-bar {
    height: 6px;
    background: rgba(108, 99, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 3px;
    width: 0;
    transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   Education
   ============================================ */
.education-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.edu-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    text-align: center;
    transition: var(--transition);
}

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

.edu-year {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    font-size: 0.9rem;
    font-weight: 700;
    padding: 6px 18px;
    border-radius: 20px;
    margin-bottom: 16px;
}

.edu-card h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.edu-card h4 {
    font-size: 0.85rem;
    color: var(--primary-light);
    font-weight: 500;
    margin-bottom: 8px;
}

.edu-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Extra / Certifications */
.extra-section {
    margin-top: 60px;
    text-align: center;
}

.extra-section h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 28px;
}

.extra-items {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.extra-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    max-width: 400px;
    text-align: left;
    transition: var(--transition);
}

.extra-item:hover {
    border-color: var(--primary);
}

.extra-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.extra-item h4 {
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.extra-item p {
    font-size: 0.88rem;
}

/* ============================================
   Contact
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    margin-top: 20px;
}

.contact-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 28px;
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--primary);
    transform: translateX(4px);
    box-shadow: var(--shadow-glow);
}

.contact-card h3 {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 2px;
}

.contact-card p {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.92rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.92rem;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-section);
    border-top: 1px solid var(--border);
    padding: 40px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.footer-brand p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 0.88rem;
    color: var(--text-muted);
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* ============================================
   Animations
   ============================================ */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .hero-content { grid-template-columns: 1fr; gap: 40px; }
    .hero-name { font-size: 2.8rem; }
    .hero-visual { display: none; }
    .about-grid { grid-template-columns: 1fr; }
    .projects-grid { grid-template-columns: repeat(2, 1fr); }
    .skills-grid { grid-template-columns: repeat(2, 1fr); }
    .education-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border);
    }

    .nav-links.open { display: flex; }
    .nav-toggle { display: flex; }

    .hero-name { font-size: 2.2rem; }
    .hero-title { font-size: 1.2rem; }
    .hero-stats { gap: 24px; }
    .stat-number, .stat-plus { font-size: 1.6rem; }

    .section { padding: 60px 0; }
    .section-title { font-size: 1.8rem; }

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

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

@media (max-width: 480px) {
    .hero-name { font-size: 1.8rem; }
    .hero-stats { flex-direction: column; gap: 16px; }
}