/*
Theme Name: Su's Lab
Theme URI: https://qzrls.cn
Description: Content-driven personal digital space — dark tech aesthetic.
Version: 5.0
Author: Max Su
*/
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&display=swap');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500&display=swap');

:root{
--bg:#050505;--surface:rgba(255,255,255,0.025);--surface-hi:rgba(255,255,255,0.05);
--border:rgba(255,255,255,0.06);--border-hi:rgba(255,255,255,0.14);
--text:#f4f4f0;--text-dim:rgba(244,244,240,0.42);--text-mid:rgba(244,244,240,0.68);
--accent:#3b82f6;--accent-bright:#60a5fa;--accent-glow:rgba(59,130,246,0.15);
--green:#4ade80;--amber:#fbbf24;
--font-head:'Syne',system-ui,sans-serif;--font-mono:'JetBrains Mono','Fira Code',monospace;
--radius:16px;--radius-xl:24px;--max-w:1160px;
--ease:cubic-bezier(0.32,0.72,0,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{
background:var(--bg);color:var(--text);
font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Noto Sans SC',sans-serif;
font-size:15px;line-height:1.65;overflow-x:hidden;cursor:none;
}
/* Animated background orbs */
body::before{
content:'';position:fixed;inset:0;z-index:0;pointer-events:none;
background:
radial-gradient(ellipse 800px 600px at var(--orb1-x,30%) var(--orb1-y,25%),rgba(59,130,246,0.18) 0%,rgba(59,130,246,0.06) 35%,transparent 70%),
radial-gradient(ellipse 600px 500px at var(--orb2-x,70%) var(--orb2-y,55%),rgba(139,92,246,0.12) 0%,rgba(139,92,246,0.04) 35%,transparent 70%),
radial-gradient(ellipse 500px 400px at var(--orb3-x,50%) var(--orb3-y,80%),rgba(74,222,128,0.06) 0%,rgba(74,222,128,0.02) 35%,transparent 70%);
animation:orbDrift 20s ease-in-out infinite;
}
@keyframes orbDrift{
0%{--orb1-x:30%;--orb1-y:25%;--orb2-x:70%;--orb2-y:55%;--orb3-x:50%;--orb3-y:80%}
25%{--orb1-x:35%;--orb1-y:20%;--orb2-x:65%;--orb2-y:60%;--orb3-x:55%;--orb3-y:75%}
50%{--orb1-x:25%;--orb1-y:30%;--orb2-x:75%;--orb2-y:50%;--orb3-x:45%;--orb3-y:85%}
75%{--orb1-x:32%;--orb1-y:22%;--orb2-x:68%;--orb2-y:58%;--orb3-x:52%;--orb3-y:78%}
100%{--orb1-x:30%;--orb1-y:25%;--orb2-x:70%;--orb2-y:55%;--orb3-x:50%;--orb3-y:80%}
}
@media(prefers-reduced-motion){body::before{animation:none}}
/* Pulsing glow */
@keyframes orbPulse{0%,100%{opacity:0.8}50%{opacity:1}}

body::after{
content:'';position:fixed;inset:0;z-index:9999;pointer-events:none;opacity:0.022;
background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
a{color:var(--accent-bright);text-decoration:none;transition:color 0.5s var(--ease)}
a:hover{color:#93c5fd}
h1,h2,h3{font-family:var(--font-head);font-weight:700;letter-spacing:-0.02em;line-height:1.1}
.container{max-width:var(--max-w);margin:0 auto;padding:0 36px}
@media(max-width:768px){.container{padding:0 20px}}

/* ── Cursor ── */
#cursor{position:fixed;width:12px;height:12px;border-radius:50%;background:var(--accent-bright);pointer-events:none;z-index:10000;transform:translate(-50%,-50%);mix-blend-mode:difference;transition:width 0.35s var(--ease),height 0.35s var(--ease),border-radius 0.35s var(--ease),background 0.35s var(--ease)}
#cursor.ring{width:48px;height:48px;background:transparent;border:1.5px solid var(--accent-bright);mix-blend-mode:normal}
#cursor.pill{width:64px;height:28px;border-radius:20px;background:transparent;border:1.5px solid var(--accent-bright);mix-blend-mode:normal}
@media(pointer:coarse){#cursor{display:none}body{cursor:auto}}

/* ── Nav ── */
.site-nav{position:fixed;top:16px;left:50%;transform:translateX(-50%);z-index:100;width:calc(100% - 48px);max-width:780px}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:50px;padding:0 8px 0 20px;background:rgba(255,255,255,0.03);backdrop-filter:blur(28px) saturate(180%);-webkit-backdrop-filter:blur(28px) saturate(180%);border:1px solid var(--border);border-radius:100px;transition:all 0.6s var(--ease)}
.nav-inner.scrolled{border-color:var(--border-hi);background:rgba(255,255,255,0.055)}
.nav-brand{display:flex;align-items:center;gap:10px}
.nav-dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 14px rgba(74,222,128,0.6);animation:dotPulse 3s ease infinite}
@keyframes dotPulse{0%,100%{opacity:1}50%{opacity:0.3}}
.nav-brand a{font-family:var(--font-head);font-size:16px;font-weight:700;color:var(--text);letter-spacing:-0.3px}
.nav-links{display:flex;gap:2px;list-style:none;overflow-x:auto;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-links a{display:block;padding:7px 13px;border-radius:100px;font-size:11.5px;font-weight:500;color:var(--text-dim);letter-spacing:0.3px;text-transform:uppercase;white-space:nowrap;transition:all 0.4s var(--ease)}
.nav-links a:hover,.nav-links a.active{color:var(--text);background:rgba(255,255,255,0.06)}
.nav-toggle{display:none;background:none;border:none;color:var(--text);font-size:20px;cursor:pointer;padding:0 14px}

/* ── Hero ── */
.hero{min-height:100dvh;display:flex;align-items:center;justify-content:center;text-align:center;position:relative;z-index:1;padding:0 24px}
.hero-inner{max-width:800px}
.hero-eyebrow{display:inline-block;padding:5px 18px;margin-bottom:24px;border:1px solid var(--border);border-radius:100px;font-family:var(--font-mono);font-size:10px;font-weight:500;letter-spacing:0.16em;text-transform:uppercase;color:var(--text-dim);opacity:0}
.hero h1{font-size:clamp(3rem,7vw,5.5rem);font-weight:800;letter-spacing:-0.04em;line-height:1.0;margin-bottom:12px;opacity:0}
.hero h1 em{font-style:normal;color:var(--accent-bright)}
.hero .hero-tags{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:16px;opacity:0}
.hero .hero-tags span{padding:4px 14px;border:1px solid var(--border);border-radius:100px;font-size:11px;font-family:var(--font-mono);color:var(--text-dim)}
.hero .hero-motto{font-size:clamp(1rem,2vw,1.15rem);color:var(--text-dim);max-width:500px;margin:0 auto 20px;line-height:1.5;opacity:0}
.hero .hero-sub{font-size:13px;color:var(--text-dim);font-family:var(--font-mono);opacity:0}
.hero-scroll{position:absolute;bottom:40px;left:50%;transform:translateX(-50%);opacity:0;cursor:pointer}
.hero-scroll i{font-size:20px;color:var(--text-dim)}

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

/* ── Sections ── */
.section{padding:120px 0;position:relative;z-index:1}
@media(max-width:768px){.section{padding:64px 0}}
.section-tag{font-family:var(--font-mono);font-size:10px;font-weight:500;letter-spacing:0.18em;text-transform:uppercase;color:var(--accent-bright);margin-bottom:12px}
.section-title{font-size:clamp(2rem,4vw,3rem);font-weight:800;letter-spacing:-0.03em;margin-bottom:40px}

/* Terminal */
.terminal-wrap{
max-width:780px;margin:24px auto 0;
background:rgba(0,0,0,0.5);border:1px solid var(--border);
border-radius:var(--radius);overflow:hidden;
}
.terminal-bar{
display:flex;gap:6px;padding:10px 14px;
background:rgba(255,255,255,0.03);border-bottom:1px solid var(--border);
}
.terminal-bar span{width:10px;height:10px;border-radius:50%}
.terminal-bar span:nth-child(1){background:#ff5f56}
.terminal-bar span:nth-child(2){background:#ffbd2e}
.terminal-bar span:nth-child(3){background:#27c93f}
.terminal-body{
padding:18px 24px;font-family:var(--font-mono);font-size:13px;
line-height:1.8;color:var(--green);min-height:60px;
}
.term-prompt{color:var(--accent-bright)}
.term-cursor{animation:termBlink 0.6s step-end infinite}
@keyframes termBlink{0%,100%{opacity:1}50%{opacity:0}}

.section-link{margin-top:24px;font-family:var(--font-mono);font-size:12px}
.section-link a{color:var(--accent-bright);border-bottom:1px solid rgba(59,130,246,0.3);padding-bottom:3px;transition:all 0.3s}
.section-link a:hover{border-bottom-color:var(--accent-bright)}

/* ── About preview ── */
.about-preview{font-size:16px;line-height:1.8;color:var(--text-mid);max-width:780px;margin:0 auto}
.about-preview p{margin-bottom:16px}

/* ── Cards (double-bezel) ── */
.card-outer{padding:1.5px;background:linear-gradient(135deg,rgba(255,255,255,0.08),rgba(255,255,255,0.02));border-radius:var(--radius-xl);transition:all 0.6s var(--ease);height:100%}
.card-outer:hover{background:linear-gradient(135deg,rgba(255,255,255,0.16),rgba(255,255,255,0.05));transform:translateY(-3px)}
.card-inner{background:var(--surface);border:1px solid var(--border);border-radius:calc(var(--radius-xl) - 3px);padding:28px 30px;height:100%;box-shadow:inset 0 1px 1px rgba(255,255,255,0.04);transition:all 0.5s var(--ease)}
.card-outer:hover .card-inner{border-color:var(--border-hi);background:var(--surface-hi)}
.card-inner h3{font-size:20px;font-weight:700;margin-bottom:8px;letter-spacing:-0.02em}
.card-inner h3 a{color:var(--text)}
.card-inner h3 a:hover{color:var(--accent-bright)}
.card-desc{font-size:13px;color:var(--text-dim);line-height:1.6;margin-bottom:14px}
.card-meta{display:flex;gap:12px;align-items:center;flex-wrap:wrap;font-family:var(--font-mono);font-size:10px;color:var(--text-dim);margin-bottom:12px}
.card-meta .status{color:var(--accent-bright)}
.card-meta .status.done{color:var(--green)}
.card-meta .status.learning{color:var(--amber)}
.card-tech{display:flex;flex-wrap:wrap;gap:5px}
.card-tech span{font-size:10px;font-family:var(--font-mono);padding:3px 9px;border:1px solid var(--border);border-radius:100px;color:var(--accent-bright);transition:all 0.4s var(--ease)}
.card-outer:hover .card-tech span{border-color:rgba(59,130,246,0.3)}
.card-progress{margin-top:12px;height:3px;background:rgba(255,255,255,0.06);border-radius:2px;overflow:hidden}
.card-progress-bar{height:100%;background:var(--accent);border-radius:2px;transition:width 0.5s var(--ease)}
.card-inner .card-img{width:100%;height:180px;object-fit:cover;border-radius:var(--radius);margin-bottom:14px;background:rgba(255,255,255,0.03)}

/* ── Horizontal scroll ── */
.hscroll-wrap{overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none;padding-bottom:8px;cursor:grab}
.hscroll-wrap::-webkit-scrollbar{display:none}
.hscroll-wrap:active{cursor:grabbing}
.hscroll-track{display:flex;gap:14px;width:max-content}
.hscroll-track .hcard{width:320px;flex-shrink:0;scroll-snap-align:start}
.hscroll-track .hcard.wide{width:420px}
.hscroll-track .hcard.photo{width:260px}
@media(max-width:640px){.hscroll-track .hcard{width:280px}.hscroll-track .hcard.wide{width:340px}.hscroll-track .hcard.photo{width:220px}}

/* ── Blog list ── */
.blog-list{display:flex;flex-direction:column;gap:0;max-width:800px}
.blog-row{display:grid;grid-template-columns:90px 1fr auto;gap:20px;align-items:baseline;padding:18px 0;border-bottom:1px solid var(--border);transition:all 0.4s var(--ease)}
.blog-row:hover{transform:translateX(8px);border-bottom-color:var(--border-hi)}
.blog-row .bd{font-family:var(--font-mono);font-size:11px;color:var(--text-dim);white-space:nowrap}
.blog-row .bt{font-size:15px;font-weight:600;color:var(--text);letter-spacing:-0.01em;line-height:1.3}
.blog-row:hover .bt{color:var(--accent-bright)}
.blog-row .bc{font-size:10px;font-family:var(--font-mono);color:var(--accent-bright);text-transform:uppercase;white-space:nowrap}
.blog-row:last-child{border-bottom:none}
@media(max-width:640px){.blog-row{grid-template-columns:1fr;gap:3px}}

/* ── Photography grid ── */
.photo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
@media(max-width:640px){.photo-grid{grid-template-columns:1fr}}
.photo-card .card-inner{padding:14px}
.photo-card .card-img{height:220px;object-fit:cover;border-radius:var(--radius);margin-bottom:10px}

/* ── Category tabs ── */
.cat-tabs{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;padding-bottom:4px;margin-bottom:32px}
.cat-tabs::-webkit-scrollbar{display:none}
.cat-tabs a{padding:6px 16px;border:1px solid var(--border);border-radius:100px;font-size:11px;font-family:var(--font-mono);color:var(--text-dim);white-space:nowrap;transition:all 0.35s var(--ease)}
.cat-tabs a:hover,.cat-tabs a.cur{color:var(--accent-bright);border-color:var(--accent-bright);background:var(--accent-glow)}

/* ── Post page ── */
.article-header{padding:100px 0 40px;text-align:center;max-width:800px;margin:0 auto}
.article-header .pc{font-family:var(--font-mono);font-size:10px;letter-spacing:0.16em;text-transform:uppercase;color:var(--accent-bright);margin-bottom:14px}
.article-header h1{font-size:clamp(2rem,4.5vw,3.5rem);font-weight:800;letter-spacing:-0.03em;margin-bottom:12px}
.article-header .pm{font-size:12px;color:var(--text-dim);font-family:var(--font-mono)}
.article-header .pm a{color:var(--text-dim)}
.post-content{max-width:780px;margin:0 auto;font-size:16px;line-height:1.85;color:var(--text-mid);padding-bottom:80px}
.post-content h2{font-size:26px;font-weight:700;color:var(--text);margin:48px 0 18px}
.post-content h3{font-size:20px;font-weight:600;color:var(--text);margin:36px 0 14px}
.post-content p{margin:0 0 20px}
.post-content ul,.post-content ol{margin:0 0 20px;padding-left:24px}
.post-content li{margin-bottom:8px}
.post-content blockquote{border-left:2px solid var(--accent-bright);margin:28px 0;padding:10px 24px;background:var(--surface);border-radius:0 var(--radius) var(--radius) 0;color:var(--text-dim);font-style:italic}
.post-content code{font-family:var(--font-mono);font-size:13px;background:rgba(255,255,255,0.06);padding:2px 7px;border-radius:5px;color:var(--amber)}
.post-content pre{background:rgba(255,255,255,0.03);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;overflow-x:auto;margin:0 0 20px;font-size:13px;line-height:1.7}
.post-content pre code{background:none;padding:0;color:var(--text-mid)}
.post-content img{max-width:100%;border-radius:var(--radius);margin:16px 0}
.post-content a{text-decoration:underline;text-underline-offset:4px}
.post-tags{display:flex;gap:6px;flex-wrap:wrap;justify-content:center;margin-top:12px}
.post-tags a{padding:4px 14px;border:1px solid var(--border);border-radius:100px;font-size:10px;font-family:var(--font-mono);color:var(--text-dim);transition:all 0.4s var(--ease)}
.post-tags a:hover{color:var(--accent-bright);border-color:var(--accent-bright)}

/* ── Page ── */
.page-hero{padding:100px 0 40px;text-align:center}
.page-hero h1{font-size:clamp(2.5rem,5vw,4rem);font-weight:800;letter-spacing:-0.03em}
.page-content{max-width:780px;margin:0 auto;font-size:16px;line-height:1.85;color:var(--text-mid);padding-bottom:80px}
.page-content h2{font-size:22px;margin:36px 0 14px;color:var(--text)}
.page-content h3{font-size:17px;margin:28px 0 10px;color:var(--text)}
.page-content p{margin-bottom:18px}
.page-content ul{margin:0 0 18px;padding-left:20px}
.page-content li{margin-bottom:6px}

/* ── Timeline ── */
.timeline{max-width:700px;margin:0 auto}
.tl-year{margin-bottom:40px}
.tl-year h3{font-family:var(--font-head);font-size:28px;font-weight:800;color:var(--text);margin-bottom:16px;letter-spacing:-0.02em}
.tl-item{display:grid;grid-template-columns:80px 1fr auto;gap:14px;align-items:baseline;padding:10px 0;border-bottom:1px solid var(--border)}
.tl-item .tl-date{font-family:var(--font-mono);font-size:11px;color:var(--text-dim)}
.tl-item .tl-title{font-size:14px;color:var(--text-mid)}
.tl-item:hover .tl-title{color:var(--accent-bright)}
.tl-item .tl-cat{font-size:10px;font-family:var(--font-mono);color:var(--accent-bright);text-transform:uppercase}
@media(max-width:640px){.tl-item{grid-template-columns:1fr;gap:2px}}

/* ── Lab page extras ── */
.lab-card .card-inner .lab-status{font-size:11px;font-family:var(--font-mono);margin-top:8px;display:flex;gap:10px;align-items:center}
.lab-card .card-inner .lab-status .dot{width:6px;height:6px;border-radius:50%}
.lab-card .card-inner .lab-status .dot.g{background:var(--green)}
.lab-card .card-inner .lab-status .dot.y{background:var(--amber)}
.lab-card .card-inner .lab-status .dot.b{background:var(--accent-bright)}

/* ── Footer ── */
.site-footer{border-top:1px solid var(--border);padding:48px 0 28px;margin-top:80px;position:relative;z-index:1}
.site-footer a:hover{border-color:var(--accent-bright)!important;background:var(--accent-glow)}
.site-footer .ft-glow{position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:400px;height:200px;background:radial-gradient(ellipse at center,rgba(59,130,246,0.06) 0%,transparent 70%);pointer-events:none}
.footer-inner{max-width:var(--max-w);margin:0 auto;padding:0 36px;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--text-dim)}
@media(max-width:640px){.footer-inner{flex-direction:column;gap:8px;text-align:center}}

/* ── 404 ── */
.e404{padding:120px 0;text-align:center}
.e404 em{font-size:clamp(5rem,12vw,10rem);font-weight:800;color:rgba(255,255,255,0.03);font-style:normal;display:block;line-height:1}
.e404 p{font-size:16px;color:var(--text-dim);margin:16px 0 32px}
.e404 a{display:inline-block;padding:10px 28px;border:1px solid var(--border);border-radius:100px;font-family:var(--font-mono);font-size:12px;color:var(--text);transition:all 0.4s var(--ease)}
.e404 a:hover{border-color:var(--accent-bright);background:var(--accent-glow)}

/* ── Mobile nav overlay ── */
.nav-overlay{display:none;position:fixed;inset:0;z-index:99;background:rgba(5,5,5,0.96);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);flex-direction:column;align-items:center;justify-content:center;gap:20px}
.nav-overlay.open{display:flex}
.nav-overlay a{font-family:var(--font-head);font-size:26px;font-weight:600;color:var(--text-dim);opacity:0;transform:translateY(16px);transition:all 0.5s var(--ease)}
.nav-overlay.open a{opacity:1;transform:translateY(0)}
.nav-overlay a:nth-child(1){transition-delay:0.05s}
.nav-overlay a:nth-child(2){transition-delay:0.1s}
.nav-overlay a:nth-child(3){transition-delay:0.15s}
.nav-overlay a:nth-child(4){transition-delay:0.2s}
.nav-overlay a:nth-child(5){transition-delay:0.25s}
.nav-overlay a:nth-child(6){transition-delay:0.3s}
.nav-overlay a:nth-child(7){transition-delay:0.35s}

@media(max-width:768px){
.nav-links{display:none}.nav-toggle{display:block}
.hero h1{font-size:2.4rem}.section-title{font-size:2rem}
}

/* ── Animations ── */
.fade-up{opacity:0;transform:translateY(28px);transition:opacity 0.9s var(--ease),transform 0.9s var(--ease)}
.fade-up.visible{opacity:1;transform:translateY(0)}
.d1{transition-delay:0.05s}.d2{transition-delay:0.12s}.d3{transition-delay:0.19s}.d4{transition-delay:0.26s}