/* === PREMIUM MINIMAL DARK (APPLE/VERCEL STYLE) === */
:root {
    --bg: #000000;
    --bg-alt: #0a0a0a;
    --bg-card: rgba(20, 20, 20, 0.6);
    --bg-glass: rgba(15, 15, 15, 0.7);
    --bg-glass-solid: rgba(10, 10, 10, 0.85);
    
    --text: #ffffff;
    --text-2: #a1a1aa;
    --text-3: #71717a;
    
    --border: rgba(255, 255, 255, 0.08);
    --border-h: rgba(255, 255, 255, 0.2);
    
    --accent: #ffffff;
    
    --font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --mono: 'JetBrains Mono', ui-monospace, monospace;
    
    --blur: 24px;
    --r: 20px;
    --r-sm: 12px;
    
    --easing: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }

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

::selection { background: rgba(255,255,255,0.2); color: #fff; }
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #333; border-radius: 4px; }

/* === CURSOR === */
.cur {
    position: fixed; width: 12px; height: 12px;
    background: #fff; border-radius: 50%;
    pointer-events: none; z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width 0.2s, height 0.2s, background 0.2s;
    mix-blend-mode: difference;
    will-change: left, top;
}
.cur-blur {
    position: fixed; width: 300px; height: 300px;
    border-radius: 50%; pointer-events: none; z-index: 0;
    background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, transparent 60%);
    transform: translate(-50%, -50%); will-change: left, top;
}
.cur.hover {
    width: 60px; height: 60px;
    background: rgba(255,255,255,1);
}

/* === NAV === */
.nav {
    position: fixed; top: 20px; left: 50%;
    transform: translateX(-50%); z-index: 100;
    display: flex; align-items: center; gap: 2rem;
    padding: 10px 24px;
    background: var(--bg-glass-solid);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    border: 1px solid var(--border);
    border-radius: 100px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.4);
    transition: transform 0.4s var(--easing), opacity 0.4s;
}
.nav.hidden { transform: translate(-50%, -150%); }
.nav-name {
    font-family: var(--mono); font-size: 0.75rem; font-weight: 600;
    color: var(--text); text-decoration: none;
    letter-spacing: -0.5px;
}
.nav-mid { display: flex; gap: 1.5rem; list-style: none; }
.nav-mid a {
    color: var(--text-2); text-decoration: none; font-size: 0.75rem;
    font-weight: 500; transition: color 0.2s;
}
.nav-mid a:hover { color: var(--text); }
.nav-icons {
    display: flex; gap: 1rem; padding-left: 1.5rem;
    border-left: 1px solid var(--border);
}
.nav-icons a {
    color: var(--text-3); font-size: 0.9rem;
    transition: color 0.2s, transform 0.2s; text-decoration: none;
}
.nav-icons a:hover { color: var(--text); transform: translateY(-2px); }

/* === BACKGROUND MESH GLOW === */
.bg-mesh {
    position: absolute; top: 0; left: 0; right: 0; height: 100vh;
    background: 
        radial-gradient(circle at 15% 50%, rgba(255,255,255,0.03) 0%, transparent 40%),
        radial-gradient(circle at 85% 30%, rgba(255,255,255,0.02) 0%, transparent 40%);
    z-index: 0; pointer-events: none;
}

/* === HERO === */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    justify-content: center; padding: 120px 5% 80px;
    position: relative; overflow: hidden;
}
.hero-inner {
    display: flex; align-items: center; gap: 5rem;
    max-width: 1000px; width: 100%; position: relative; z-index: 1;
}
.hero-pic {
    flex-shrink: 0; position: relative; width: 220px; height: 220px;
}
.hero-pic::before {
    content: ''; position: absolute; inset: -2px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255,255,255,0.4), rgba(255,255,255,0.05));
    z-index: -1; animation: spin 8s linear infinite;
}
@keyframes spin { 100% { transform: rotate(360deg); } }

.hero-pic img {
    width: 220px; height: 220px; border-radius: 50%;
    object-fit: cover; object-position: center 15%;
    border: 6px solid var(--bg);
    display: block; filter: grayscale(20%) contrast(110%);
}
.hero-info { flex: 1; }
.hero-label {
    font-family: var(--mono); font-size: 0.7rem;
    color: var(--text-3); letter-spacing: 2px;
    text-transform: uppercase; margin-bottom: 1rem;
}
.hero-h1 {
    font-size: clamp(3rem, 6vw, 4.5rem); font-weight: 800;
    line-height: 1.05; letter-spacing: -0.04em; margin-bottom: 1.2rem;
    background: linear-gradient(to bottom right, #fff 20%, #71717a);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-desc {
    color: var(--text-2); font-size: 1.05rem; line-height: 1.6;
    max-width: 480px; margin-bottom: 2rem;
}
.hero-desc strong { color: var(--text); font-weight: 600; }
.hero-chips { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.chip {
    display: flex; align-items: center; gap: 6px;
    font-size: 0.75rem; color: var(--text-2);
    background: rgba(255,255,255,0.03); padding: 6px 14px;
    border-radius: 100px; border: 1px solid var(--border);
    backdrop-filter: blur(8px);
    transition: background 0.3s, border-color 0.3s;
}
.chip:hover { border-color: rgba(255,255,255,0.3); background: rgba(255,255,255,0.08); color: #fff; }
.chip i { font-size: 0.7rem; color: var(--text-3); }

.hero-btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 12px 28px;
    background: #ffffff; color: #000000;
    text-decoration: none; font-size: 0.85rem; font-weight: 600;
    border-radius: 100px;
    transition: transform 0.3s var(--easing), box-shadow 0.3s;
}
.hero-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 30px rgba(255,255,255,0.15);
}

/* === SECTIONS === */
.sec { padding: 7rem 5%; position: relative; }
.sec-dark { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.wrap { max-width: 1000px; margin: 0 auto; }
.sec-tag {
    font-family: var(--mono); font-size: 0.65rem;
    color: var(--text-3); text-transform: uppercase;
    letter-spacing: 2px; margin-bottom: 1rem;
}
.sec-h2 {
    font-size: 2.4rem; font-weight: 700;
    letter-spacing: -0.03em; margin-bottom: 3.5rem;
}

/* === ABOUT === */
.about-row { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 4rem; align-items: start; }
.about-txt { color: var(--text-2); font-size: 1rem; line-height: 1.8; }
.about-txt p + p { margin-top: 1.2rem; }
.about-txt strong { color: var(--text); font-weight: 500; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.a-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--r-sm); padding: 1.5rem;
    transition: transform 0.4s var(--easing), border-color 0.4s, background 0.4s;
}
.a-card:hover { 
    transform: translateY(-4px); border-color: rgba(255,255,255,0.15); 
    background: rgba(30,30,30,0.6);
}
.a-card i { font-size: 1.1rem; color: var(--text); margin-bottom: 1rem; display: block; opacity: 0.8; }
.a-card h4 { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 1px; color: var(--text-3); margin-bottom: 0.3rem; font-weight: 600; }
.a-card p { font-size: 0.9rem; font-weight: 500; color: var(--text); }

/* === SKILLS === */
.sk-col { display: flex; flex-direction: column; gap: 3rem; }
.sk-group h3 {
    font-family: var(--mono); font-size: 0.7rem; color: var(--text-3);
    text-transform: uppercase; letter-spacing: 1px; margin-bottom: 1rem;
}
.sk-row { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.sk {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 16px; background: rgba(255,255,255,0.02);
    border: 1px solid var(--border); border-radius: 100px;
    transition: all 0.3s var(--easing); cursor: default;
}
.sk:hover {
    background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}
.sk i { font-size: 1.1rem; color: var(--text-2); transition: color 0.3s; }
.sk:hover i { color: var(--text); }
.sk span { font-family: var(--mono); font-size: 0.75rem; font-weight: 500; color: var(--text-2); }
.sk:hover span { color: var(--text); }

/* === TIMELINE === */
.tl { position: relative; padding-left: 2rem; border-left: 1px solid var(--border); max-width: 700px; }
.tl-item { position: relative; margin-bottom: 3rem; padding-left: 1.5rem; }
.tl-item::before {
    content: ''; position: absolute; left: -2.35rem; top: 6px;
    width: 10px; height: 10px; background: var(--bg);
    border: 2px solid var(--text-3); border-radius: 50%;
    transition: border-color 0.3s, background 0.3s;
}
.tl-item:hover::before { border-color: var(--text); background: var(--text); }
.tl-item:first-child::before { border-color: var(--text); background: var(--text); }
.tl-head { display: flex; align-items: center; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 0.4rem; }
.tl-role { font-size: 1.1rem; font-weight: 600; letter-spacing: -0.02em; }
.badge {
    font-family: var(--mono); font-size: 0.6rem; padding: 3px 8px;
    border-radius: 100px; font-weight: 600; text-transform: uppercase;
}
.b-on { background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); color: #fff; }
.b-off { color: var(--text-3); border: 1px solid var(--border); }
.tl-where { font-family: var(--mono); font-size: 0.75rem; color: var(--text-3); margin-bottom: 0.5rem; display: block; }
.tl-desc { font-size: 0.9rem; color: var(--text-2); line-height: 1.6; }

/* === PROJECTS === */
.p-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.p-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--r); overflow: hidden; cursor: pointer;
    display: flex; flex-direction: column;
    transition: transform 0.5s var(--easing), border-color 0.4s;
}
.p-card:hover {
    transform: translateY(-8px); border-color: rgba(255,255,255,0.2);
}
.p-img { height: 200px; overflow: hidden; background: #000; position: relative; }
.p-img img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.7s var(--easing), filter 0.5s;
    filter: brightness(0.85) grayscale(20%);
}
.p-card:hover .p-img img { transform: scale(1.05); filter: brightness(1) grayscale(0%); }
.p-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.p-label {
    font-family: var(--mono); font-size: 0.6rem; color: var(--text-3);
    text-transform: uppercase; letter-spacing: 1px; margin-bottom: 0.5rem; display: block;
}
.p-name { font-size: 1.2rem; font-weight: 600; margin-bottom: 0.5rem; letter-spacing: -0.02em; }
.p-desc { font-size: 0.85rem; color: var(--text-2); line-height: 1.6; margin-bottom: 1.5rem; flex: 1; }
.p-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1rem; }
.p-tags span {
    font-family: var(--mono); font-size: 0.65rem; color: var(--text-2);
    background: rgba(255,255,255,0.04); padding: 4px 10px; border-radius: 100px;
}
.p-action {
    display: inline-flex; align-items: center; gap: 6px;
    color: var(--text); text-decoration: none; font-size: 0.8rem;
    font-weight: 500; transition: gap 0.3s var(--easing); margin-top: auto;
}
.p-card:hover .p-action { gap: 12px; }
.p-action i { font-size: 0.7rem; }

/* === OVERLAY === */
.overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.85); backdrop-filter: blur(40px); -webkit-backdrop-filter: blur(40px);
    z-index: 200; overflow-y: auto; padding: 4rem 5%;
}
.overlay.on { display: block; animation: ovIn 0.5s var(--easing); }
@keyframes ovIn { from { opacity: 0; transform: translateY(20px) scale(0.98); } to { opacity: 1; transform: translateY(0) scale(1); } }

.ov-close {
    position: fixed; top: 2rem; right: 2.5rem;
    background: rgba(255,255,255,0.1); backdrop-filter: blur(16px);
    border: 1px solid rgba(255,255,255,0.1); color: var(--text);
    width: 44px; height: 44px; border-radius: 50%;
    font-size: 1rem; z-index: 210;
    transition: all 0.3s var(--easing);
    display: flex; align-items: center; justify-content: center; cursor: pointer;
}
.ov-close:hover { background: rgba(255,255,255,0.2); transform: scale(1.1); }

.ov-body { max-width: 800px; margin: 0 auto; }
.ov-hero {
    width: 100%; border-radius: var(--r); border: 1px solid var(--border);
    margin-bottom: 2rem; box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}
.ov-body h2 { font-size: 2.5rem; font-weight: 700; letter-spacing: -0.04em; margin-bottom: 1rem; }
.ov-text { color: var(--text-2); line-height: 1.8; font-size: 1.05rem; }
.ov-text p + p { margin-top: 1rem; }
.ov-text strong { color: var(--text); font-weight: 500; }

/* Optimization Section */
.ov-optim {
    margin: 3rem 0; padding: 2rem;
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.1); border-radius: var(--r);
}
.ov-optim h3 {
    font-size: 1.2rem; font-weight: 600; margin-bottom: 0.8rem;
    display: flex; align-items: center; gap: 0.6rem;
}
.ov-optim-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin: 2rem 0; }
.ov-stat {
    text-align: center; padding: 1.5rem 1rem;
    background: rgba(0,0,0,0.4); border-radius: var(--r-sm);
    border: 1px solid var(--border);
}
.ov-stat .stat-val {
    font-family: var(--mono); font-size: 1.8rem; font-weight: 700;
    color: var(--text); display: block; margin-bottom: 0.3rem;
}
.ov-stat .stat-label { font-size: 0.75rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 1px; }
.ov-optim-list { list-style: none; display: flex; flex-direction: column; gap: 0.8rem; }
.ov-optim-list li {
    font-size: 0.9rem; color: var(--text-2); display: flex; align-items: flex-start; gap: 0.8rem;
    padding: 0.8rem 1rem; background: rgba(255,255,255,0.01); border-radius: var(--r-sm);
    border: 1px solid transparent; transition: border-color 0.3s;
}
.ov-optim-list li:hover { border-color: rgba(255,255,255,0.08); background: rgba(255,255,255,0.03); }
.ov-optim-list li i { color: var(--text); font-size: 0.8rem; margin-top: 0.2rem; opacity: 0.7; }

.ov-feats { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 3rem 0; }
.ov-feat {
    background: rgba(255,255,255,0.02); border: 1px solid var(--border);
    border-radius: var(--r-sm); padding: 1.5rem;
    transition: background 0.3s, border-color 0.3s;
}
.ov-feat:hover { background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.15); }
.ov-feat i { color: var(--text); margin-bottom: 0.8rem; display: block; font-size: 1.2rem; opacity: 0.8; }
.ov-feat h4 { font-size: 0.9rem; margin-bottom: 0.4rem; font-weight: 600; }
.ov-feat p { font-size: 0.85rem; color: var(--text-2); line-height: 1.5; }

/* Video */
.ov-video-wrap { margin: 3rem 0; }
.ov-video {
    width: 100%; border-radius: var(--r);
    border: 1px solid rgba(255,255,255,0.15);
    box-shadow: 0 10px 40px rgba(0,0,0,0.6);
    background: #000;
}
.ov-video-label {
    text-align: center; font-family: var(--mono); font-size: 0.75rem;
    color: var(--text-3); margin-top: 1rem;
}

/* btop */
.ov-btop-wrap { margin: 3rem 0; }
.ov-btop-wrap img {
    width: 100%; border-radius: var(--r); border: 1px solid rgba(255,255,255,0.15);
    box-shadow: 0 10px 40px rgba(0,0,0,0.6); cursor: pointer;
    transition: transform 0.3s var(--easing);
}
.ov-btop-wrap img:hover { transform: scale(1.01); }
.ov-btop-caption {
    text-align: center; font-family: var(--mono); font-size: 0.8rem; color: var(--text-3); margin-top: 1rem;
}
.ov-btop-caption strong { color: var(--text); }

/* Gallery with captions */
.ov-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 3rem 0; }
.ov-gallery-item {
    position: relative; border-radius: var(--r-sm); overflow: hidden;
    border: 1px solid var(--border); transition: border-color 0.4s, transform 0.4s var(--easing);
    cursor: pointer; background: #000;
}
.ov-gallery-item:hover { border-color: rgba(255,255,255,0.2); transform: translateY(-4px); }
.ov-gallery-item img { width: 100%; display: block; opacity: 0.8; transition: opacity 0.3s; }
.ov-gallery-item:hover img { opacity: 1; }
.ov-gallery-item .caption {
    position: absolute; bottom: 0; left: 0; right: 0;
    padding: 1rem; background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    font-size: 0.85rem; color: #fff; font-weight: 500;
    transform: translateY(10px); opacity: 0; transition: all 0.3s var(--easing);
}
.ov-gallery-item:hover .caption { transform: translateY(0); opacity: 1; }
.ov-gallery-item .caption span {
    display: block; font-size: 0.7rem; color: var(--text-2);
    font-family: var(--mono); margin-top: 0.3rem;
}

.ov-cta {
    display: inline-flex; align-items: center; gap: 10px;
    background: #fff; color: #000;
    padding: 12px 28px; border-radius: 100px; text-decoration: none;
    font-weight: 600; font-size: 0.85rem;
    transition: transform 0.3s var(--easing), box-shadow 0.3s;
    margin-top: 1rem;
}
.ov-cta:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(255,255,255,0.15); }

/* === LIGHTBOX === */
.lb {
    position: fixed; inset: 0; background: rgba(0,0,0,0.95);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); z-index: 300;
    display: none; justify-content: center; align-items: center; cursor: pointer;
}
.lb.on { display: flex; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.lb img { max-width: 90%; max-height: 90%; border-radius: var(--r-sm); box-shadow: 0 20px 60px rgba(0,0,0,0.8); }

/* === FOOTER === */
.ft { text-align: center; padding: 4rem 0; border-top: 1px solid var(--border); }
.ft-line { font-family: var(--mono); font-size: 0.8rem; color: var(--text-3); margin-bottom: 1.2rem; }
.ft-social { display: flex; justify-content: center; gap: 1.5rem; margin-bottom: 1rem; }
.ft-social a { color: var(--text-3); font-size: 1.1rem; transition: color 0.3s, transform 0.3s; text-decoration: none; }
.ft-social a:hover { color: var(--text); transform: translateY(-3px); }
.ft-copy { font-size: 0.65rem; color: var(--text-3); font-family: var(--mono); }

/* === REVEAL ANIMATIONS === */
.rv {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.8s var(--easing), transform 0.8s var(--easing);
}
.rv.on { opacity: 1; transform: translateY(0); }

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .cur, .cur-blur { display: none; }
    .bg-mesh { display: none; }
    
    .nav { width: calc(100% - 2rem); padding: 10px 18px; gap: 0; justify-content: space-between; }
    .nav-mid { display: none; }
    .nav-icons { border: none; padding: 0; }
    
    .hero { padding: 100px 5% 60px; }
    .hero-inner { flex-direction: column; text-align: center; gap: 2.5rem; }
    .hero-pic, .hero-pic img { width: 160px; height: 160px; }
    .hero-h1 { font-size: 2.5rem; }
    .hero-desc { margin: 1rem auto 2rem; font-size: 0.95rem; }
    .hero-chips { justify-content: center; }
    
    .about-row { grid-template-columns: 1fr; gap: 2rem; }
    .about-grid { grid-template-columns: 1fr; }
    .p-grid { grid-template-columns: 1fr; }
    .ov-feats { grid-template-columns: 1fr; }
    .ov-gallery { grid-template-columns: 1fr; }
    .ov-optim-stats { grid-template-columns: 1fr; gap: 1rem; }
    
    .sec-h2 { font-size: 2rem; }
    .ov-close { top: 1rem; right: 1rem; width: 36px; height: 36px; }
    .overlay { padding: 4rem 1rem 2rem; }
    .ov-gallery-item .caption { opacity: 1; transform: translateY(0); } /* Always show captions on mobile */
}