:root {
    --bg: #0b0c10;
    --bg2: #111217;
    --surface: #16181f;
    --surface2: #1e2029;
    --border: rgba(255,255,255,0.07);
    --accent: #5b9cf6;
    --accent2: #a78bfa;
    --green: #34d399;
    --text: #e8eaf0;
    --text-muted: #8b90a0;
    --text-faint: #4a4f63;
    --font-display: 'Syne', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --radius: 16px;
    --radius-sm: 8px;
    --shadow: 0 8px 40px rgba(0,0,0,0.4);
    --glow: 0 0 60px rgba(91,156,246,0.12);
}

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

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

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.7;
    overflow-x: hidden;
}

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

img {
    max-width: 100%;
    display: block;
}

/* =========================================
   NAVBAR
   ========================================= */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 20px 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(11,12,16,0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-logo {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--accent);
    letter-spacing: 0.05em;
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
    flex: 1;
}

.nav-links a {
    font-size: 0.88rem;
    font-weight: 400;
    color: var(--text-muted);
    padding: 6px 14px;
    border-radius: 6px;
    transition: all 0.2s;
    letter-spacing: 0.02em;
}

.nav-links a:hover {
    color: var(--text);
    background: var(--surface);
}

.nav-cta {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--bg);
    background: var(--accent);
    padding: 8px 20px;
    border-radius: 30px;
    transition: all 0.2s;
    flex-shrink: 0;
}

.nav-cta:hover {
    background: #7ab0f8;
    transform: translateY(-1px);
}

/* =========================================
   HERO
   ========================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 32px 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
}

.orb1 {
    width: 500px; height: 500px;
    background: radial-gradient(circle, #5b9cf6 0%, transparent 70%);
    top: -100px; left: -100px;
    animation: float1 8s ease-in-out infinite;
}

.orb2 {
    width: 400px; height: 400px;
    background: radial-gradient(circle, #a78bfa 0%, transparent 70%);
    bottom: -80px; right: 5%;
    animation: float2 10s ease-in-out infinite;
}

.orb3 {
    width: 300px; height: 300px;
    background: radial-gradient(circle, #34d399 0%, transparent 70%);
    top: 40%; left: 50%;
    animation: float1 12s ease-in-out infinite reverse;
    opacity: 0.15;
}

@keyframes float1 {
    0%, 100% { transform: translate(0,0); }
    50% { transform: translate(30px, -40px); }
}
@keyframes float2 {
    0%, 100% { transform: translate(0,0); }
    50% { transform: translate(-20px, 30px); }
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-content {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
    animation: heroFade 1s ease both;
}

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

.hero-badge {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    background: rgba(91,156,246,0.1);
    border: 1px solid rgba(91,156,246,0.25);
    padding: 6px 16px;
    border-radius: 30px;
    margin-bottom: 28px;
}

.hero-name {
    font-family: var(--font-display);
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

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

.hero-tagline {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 540px;
    margin-bottom: 40px;
    line-height: 1.7;
    font-weight: 300;
}

.hero-tagline em {
    font-style: normal;
    color: var(--text);
}

.hero-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-btn {
    display: inline-block;
    padding: 13px 32px;
    border-radius: 40px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.25s;
    letter-spacing: 0.02em;
}

.hero-btn.primary {
    background: var(--accent);
    color: var(--bg);
}
.hero-btn.primary:hover {
    background: #7ab0f8;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(91,156,246,0.35);
}

.hero-btn.secondary {
    border: 1px solid var(--border);
    color: var(--text-muted);
    background: var(--surface);
}
.hero-btn.secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.hero-scroll-hint {
    position: absolute;
    bottom: 40px;
    left: 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-faint);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--text-faint), transparent);
    animation: scrollAnim 2s ease-in-out infinite;
}

@keyframes scrollAnim {
    0%,100% { transform: scaleY(1); opacity: 1; }
    50% { transform: scaleY(0.5); opacity: 0.4; }
}

/* =========================================
   SECTIONS (shared)
   ========================================= */
.section {
    padding: 100px 32px;
}

.dark-section {
    background: var(--bg2);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.section-label {
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin-bottom: 16px;
}
.section-label.light { color: rgba(255,255,255,0.25); }

.section-heading {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 56px;
    letter-spacing: -0.02em;
    line-height: 1.1;
}
.section-heading.light { color: var(--text); }

/* =========================================
   ABOUT
   ========================================= */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 64px;
    align-items: start;
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: 18px;
    font-size: 1rem;
    line-height: 1.75;
}

.about-text strong { color: var(--text); font-weight: 500; }

.about-education {
    margin-top: 36px;
    padding: 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.edu-label {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 12px;
    font-weight: 500;
}

.edu-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-bottom: 12px;
}

.edu-item strong {
    color: var(--text);
    font-weight: 600;
    font-size: 0.95rem;
}

.edu-item span {
    color: var(--text-muted);
    font-size: 0.88rem;
}

.coursework {
    font-size: 0.82rem;
    color: var(--text-faint);
    line-height: 1.6;
    border-top: 1px solid var(--border);
    padding-top: 10px;
}

.cw-label {
    color: var(--text-muted);
    font-weight: 500;
    margin-right: 4px;
}

.skills-panel {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.skills-block {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 22px;
    transition: border-color 0.2s;
}

.skills-block:hover {
    border-color: rgba(91,156,246,0.25);
}

.skills-block h4 {
    font-family: var(--font-display);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.tag-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    font-size: 0.8rem;
    padding: 4px 12px;
    border-radius: 20px;
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text-muted);
    transition: all 0.2s;
}

.tag:hover {
    color: var(--text);
    border-color: rgba(255,255,255,0.15);
}

.accent-tag {
    background: rgba(91,156,246,0.08);
    border-color: rgba(91,156,246,0.2);
    color: var(--accent);
}

/* =========================================
   PROJECTS
   ========================================= */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 24px;
}

.project-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    position: relative;
}

.project-card:hover {
    border-color: rgba(91,156,246,0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow), var(--glow);
}

.project-card.featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.project-img-wrap {
    position: relative;
    overflow: hidden;
    background: var(--bg);
    min-height: 260px;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover .project-img {
    transform: scale(1.04);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(91,156,246,0.15), transparent);
    display: flex;
    align-items: flex-start;
    padding: 20px;
}

.featured-badge {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    background: rgba(11,12,16,0.8);
    border: 1px solid rgba(91,156,246,0.3);
    padding: 5px 12px;
    border-radius: 20px;
    backdrop-filter: blur(8px);
}

.project-body {
    padding: 28px 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

.project-meta {
    font-size: 0.75rem;
    color: var(--text-faint);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.project-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.01em;
}

.project-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.project-desc strong { color: var(--text); font-weight: 500; }

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 4px;
}

.ptag {
    font-size: 0.75rem;
    padding: 3px 10px;
    border-radius: 20px;
    background: var(--surface2);
    color: var(--text-faint);
    border: 1px solid var(--border);
}

.project-stat {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent);
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.project-accent-bar {
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
}

.project-accent-bar.green {
    background: linear-gradient(90deg, var(--green), var(--accent));
}

/* =========================================
   ORGANIZATION / TIMELINE
   ========================================= */
.org-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 64px;
    align-items: start;
}

.org-name {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
    line-height: 1.3;
}

.org-sub {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    border-left: 1px solid var(--border);
    padding-left: 32px;
}

.tl-item {
    position: relative;
    padding-bottom: 40px;
}

.tl-item:last-child { padding-bottom: 0; }

.tl-dot {
    position: absolute;
    left: -39px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    border: 3px solid var(--bg);
    box-shadow: 0 0 0 1px var(--accent);
}

.tl-date {
    font-size: 0.75rem;
    color: var(--accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 500;
    margin-bottom: 6px;
}

.tl-title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 10px;
}

.tl-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.tl-list li {
    font-size: 0.88rem;
    color: var(--text-muted);
    padding-left: 16px;
    position: relative;
    line-height: 1.6;
}

.tl-list li::before {
    content: '–';
    position: absolute;
    left: 0;
    color: var(--text-faint);
}

/* =========================================
   FOOTER / CONTACT
   ========================================= */
.footer {
    position: relative;
    padding: 100px 32px 48px;
    overflow: hidden;
    background: var(--bg2);
    border-top: 1px solid var(--border);
}

.footer-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.footer-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.2;
}

.f1 {
    width: 400px; height: 400px;
    background: radial-gradient(circle, var(--accent), transparent 70%);
    top: -100px; left: -100px;
}

.f2 {
    width: 300px; height: 300px;
    background: radial-gradient(circle, var(--accent2), transparent 70%);
    bottom: -50px; right: 5%;
}

.footer-inner {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.footer-heading {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.03em;
}

.footer-sub {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 52px;
}

.contact-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 64px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--text-muted);
    transition: all 0.25s;
}

.contact-item:hover {
    border-color: var(--accent);
    color: var(--text);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(91,156,246,0.15);
}

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background: rgba(91,156,246,0.1);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--accent);
    font-weight: 700;
}

.footer-divider {
    height: 1px;
    background: var(--border);
    margin-bottom: 28px;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-logo {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.1rem;
    color: var(--accent);
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--text-faint);
}

.back-top {
    font-size: 0.82rem;
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 6px 16px;
    border-radius: 20px;
    transition: all 0.2s;
}

.back-top:hover {
    color: var(--accent);
    border-color: var(--accent);
}

/* =========================================
   SCROLL ANIMATIONS
   ========================================= */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* Stagger children in skills panel */
.skills-block:nth-child(2) { transition-delay: 0.1s; }
.skills-block:nth-child(3) { transition-delay: 0.2s; }
.skills-block:nth-child(4) { transition-delay: 0.3s; }

.tl-item:nth-child(2) { transition-delay: 0.15s; }
.tl-item:nth-child(3) { transition-delay: 0.3s; }

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .project-card.featured {
        grid-column: 1;
        grid-template-columns: 1fr;
    }
    .projects-grid {
        grid-template-columns: 1fr;
    }
    .org-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 640px) {
    .nav-links { display: none; }
    .hero-content { text-align: left; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .section { padding: 70px 20px; }
    .hero { padding: 100px 20px 60px; }
}