/* ===== Science with Anvi — archive theme ===== */
:root{
  --bg:#0a0e1a; --bg2:#0f1424; --panel:rgba(255,255,255,.04);
  --panel-2:rgba(255,255,255,.06); --line:rgba(255,255,255,.09);
  --text:#eef1f8; --muted:#9aa3bd; --faint:#6b7392;
  --cyan:#38e1ff; --violet:#a855f7; --lime:#7cf29a; --amber:#ffce6b;
  --grad:linear-gradient(120deg,#38e1ff 0%,#7c8bff 45%,#a855f7 100%);
  --radius:18px; --shadow:0 18px 50px -18px rgba(0,0,0,.7);
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,sans-serif;color:var(--text);
  background:radial-gradient(1200px 700px at 80% -10%,rgba(168,85,247,.16),transparent 60%),
             radial-gradient(1000px 600px at 0% 0%,rgba(56,225,255,.12),transparent 55%),
             var(--bg);
  min-height:100vh;overflow-x:hidden;line-height:1.55;-webkit-font-smoothing:antialiased;
}
#fx{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.55}
body>*:not(#fx):not(#lightbox){position:relative;z-index:1}
/* #lightbox keeps its own position:fixed / z-index:100 (this rule's :not(#fx)
   carries id-specificity and would otherwise demote the modal to normal flow) */
a{color:inherit;text-decoration:none}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ===== Nav ===== */
.nav{display:flex;align-items:center;justify-content:space-between;
  max-width:var(--maxw);margin:0 auto;padding:20px 24px}
.nav-brand{display:flex;align-items:center;gap:10px;font-family:'Space Grotesk';font-weight:700;font-size:18px}
.nav-mark{font-size:22px;filter:drop-shadow(0 0 14px rgba(56,225,255,.6))}
.nav-links{display:flex;align-items:center;gap:26px;font-size:14.5px;color:var(--muted)}
.nav-links a:hover{color:var(--text)}
.btn{display:inline-flex;align-items:center;gap:8px;border:none;cursor:pointer;
  font-family:'Space Grotesk';font-weight:600;font-size:14px;border-radius:999px;
  padding:10px 18px;transition:.2s transform,.2s box-shadow,.2s filter}
.btn-sub{background:var(--grad);color:#05070f;box-shadow:0 8px 24px -8px rgba(124,139,255,.7)}
.btn-sub:hover{transform:translateY(-2px);filter:brightness(1.08)}

/* ===== Hero ===== */
.hero{max-width:var(--maxw);margin:0 auto;padding:56px 24px 40px;text-align:left}
.hero-badge{display:inline-flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:.04em;
  text-transform:uppercase;color:var(--muted);background:var(--panel);border:1px solid var(--line);
  padding:7px 14px;border-radius:999px;margin-bottom:26px}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--lime);
  box-shadow:0 0 0 0 rgba(124,242,154,.7);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(124,242,154,.6)}70%{box-shadow:0 0 0 10px rgba(124,242,154,0)}100%{box-shadow:0 0 0 0 rgba(124,242,154,0)}}
.hero-id{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.hero-avatar{width:92px;height:92px;border-radius:24px;object-fit:cover;
  border:2px solid var(--line);box-shadow:var(--shadow);background:var(--panel-2)}
.hero-title{font-family:'Space Grotesk';font-weight:700;font-size:clamp(38px,6vw,66px);
  line-height:1.02;letter-spacing:-.02em}
.hero-tag{color:var(--muted);font-size:clamp(15px,2.2vw,18px);max-width:560px;margin-top:12px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 22px;min-width:120px;backdrop-filter:blur(6px)}
.stat b{font-family:'Space Grotesk';font-size:26px;display:block;line-height:1}
.stat span{font-size:12.5px;color:var(--faint);text-transform:uppercase;letter-spacing:.06em}
.scroll-hint{margin-top:40px;color:var(--faint);font-size:13px;animation:float 2.6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(6px)}}

/* ===== Controls ===== */
.controls{max-width:var(--maxw);margin:16px auto 0;padding:24px;
  position:sticky;top:0;z-index:20;
  background:linear-gradient(var(--bg),rgba(10,14,26,.86) 70%,transparent);}
.controls-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:12px;backdrop-filter:blur(12px)}
.search{display:flex;align-items:center;gap:10px;flex:1;min-width:220px;
  background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:10px 14px;color:var(--muted)}
.search input{flex:1;background:none;border:none;outline:none;color:var(--text);font-size:15px}
.filters{display:flex;gap:8px}
.chip{background:var(--bg2);border:1px solid var(--line);color:var(--muted);
  font-family:'Space Grotesk';font-weight:600;font-size:13.5px;padding:9px 16px;border-radius:999px;cursor:pointer;transition:.18s}
.chip:hover{color:var(--text)}
.chip.active{background:var(--grad);color:#05070f;border-color:transparent}
.sortwrap{display:flex;align-items:center;gap:8px;color:var(--faint);font-size:13px}
.sortwrap select{background:var(--bg2);border:1px solid var(--line);color:var(--text);
  border-radius:10px;padding:9px 12px;font-size:14px;outline:none;cursor:pointer}
.result-meta{color:var(--faint);font-size:13px;margin:14px 4px 0}

/* ===== Grid ===== */
.grid{max-width:var(--maxw);margin:8px auto 0;padding:16px 24px 40px;
  display:grid;gap:22px;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;cursor:pointer;transition:.25s transform,.25s box-shadow,.25s border-color;
  display:flex;flex-direction:column;opacity:0;transform:translateY(14px);animation:rise .5s forwards}
@keyframes rise{to{opacity:1;transform:none}}
.card:hover{transform:translateY(-6px);border-color:rgba(56,225,255,.4);box-shadow:var(--shadow)}
.thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg2)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:.4s transform}
.card:hover .thumb img{transform:scale(1.06)}
.badge-dur{position:absolute;right:8px;bottom:8px;background:rgba(3,6,15,.82);
  color:#fff;font-size:12px;font-weight:600;padding:3px 8px;border-radius:7px;letter-spacing:.02em}
.badge-type{position:absolute;left:8px;top:8px;font-size:11px;font-weight:700;text-transform:uppercase;
  letter-spacing:.05em;padding:4px 9px;border-radius:7px;color:#05070f}
.badge-type.short{background:var(--amber)}
.badge-type.long{background:var(--cyan)}
.play{position:absolute;inset:0;display:grid;place-items:center;opacity:0;transition:.25s;background:rgba(5,7,15,.28)}
.card:hover .play{opacity:1}
.play span{width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,.92);color:#05070f;
  display:grid;place-items:center;font-size:20px;padding-left:4px;box-shadow:0 10px 30px rgba(0,0,0,.5)}
.card-body{padding:16px 16px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-family:'Space Grotesk';font-weight:600;font-size:16px;line-height:1.32;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;display:flex;gap:14px;color:var(--faint);font-size:12.5px}
.card-meta b{color:var(--muted);font-weight:600}

.empty{text-align:center;color:var(--muted);padding:60px 24px}
.empty button{margin-left:8px;background:none;border:1px solid var(--line);color:var(--text);
  padding:7px 14px;border-radius:999px;cursor:pointer}

/* ===== About ===== */
.about{max-width:var(--maxw);margin:20px auto;padding:24px}
.about-card{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:38px;backdrop-filter:blur(8px)}
.about-card h2{font-family:'Space Grotesk';font-size:26px;margin-bottom:14px}
.about-card p{color:var(--muted);max-width:720px;white-space:pre-line;margin-bottom:22px}

/* ===== Footer ===== */
.foot{max-width:var(--maxw);margin:20px auto 0;padding:30px 24px 50px;border-top:1px solid var(--line);
  color:var(--faint);font-size:13.5px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.foot-sub strong{color:var(--muted)}

/* ===== Lightbox ===== */
.lightbox{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:24px}
.lightbox[hidden]{display:none}   /* let the hidden attribute actually hide it */
.lb-backdrop{position:absolute;inset:0;background:rgba(3,5,12,.8);backdrop-filter:blur(8px)}
.lb-panel{position:relative;z-index:1;width:min(920px,100%);max-height:92vh;overflow:auto;
  background:var(--bg2);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);
  animation:pop .28s cubic-bezier(.2,.9,.3,1.2)}
@keyframes pop{from{transform:scale(.94);opacity:0}to{transform:none;opacity:1}}
.lb-close{position:absolute;top:12px;right:12px;z-index:2;width:38px;height:38px;border-radius:50%;
  background:rgba(3,6,15,.7);color:#fff;border:1px solid var(--line);cursor:pointer;font-size:15px}
.lb-video{position:relative;aspect-ratio:16/9;background:#000;border-radius:20px 20px 0 0;overflow:hidden}
.lb-video #player{position:absolute;inset:0}   /* fill the frame so the iframe gets full height */
/* translateZ forces the iframe onto its own layer — fixes iOS Safari rendering
   an iframe blank (audio-only) inside a border-radius + overflow:hidden box */
.lb-video iframe{width:100%;height:100%;border:0;transform:translateZ(0);-webkit-transform:translateZ(0)}
/* vertical Shorts play in a portrait frame on every device */
.lb-panel.short{width:min(460px,100%)}
.lb-panel.short .lb-video{aspect-ratio:9/16;max-height:78vh;width:auto;max-width:100%;margin-inline:auto}

/* height fallback for browsers without aspect-ratio support (older iOS/WebView) */
@supports not (aspect-ratio: 16 / 9){
  .lb-video{height:0;padding-top:56.25%}
  .lb-panel.short .lb-video{height:80vh;padding-top:0;width:calc(80vh * 9 / 16);max-width:100%}
}
.lb-meta{padding:22px 26px 28px;display:flex;flex-direction:column;gap:12px}
.lb-meta h3{font-family:'Space Grotesk';font-size:22px;line-height:1.25}
.lb-sub{color:var(--faint);font-size:13.5px;display:flex;gap:16px;flex-wrap:wrap}
.lb-meta p{color:var(--muted);font-size:14.5px;white-space:pre-line;max-height:180px;overflow:auto}
.lb-meta .btn{align-self:flex-start}

/* ===== Responsive: tablet ===== */
@media(max-width:900px){
  .grid{gap:18px}
  .about-card{padding:30px 26px}
  .hero{padding-top:40px}
}

/* ===== Responsive: phones ===== */
@media(max-width:640px){
  .nav{padding:16px}
  .nav-links{gap:14px}
  .nav-links a:not(.btn){display:none}
  .nav-title{font-size:16px}
  .btn-sub{padding:9px 15px;font-size:13.5px}

  .hero{padding:24px 16px 28px}
  .hero-badge{margin-bottom:20px}
  .hero-id{gap:16px}
  .hero-avatar{width:70px;height:70px;border-radius:18px}
  .hero-stats{gap:10px;margin-top:24px}
  .stat{flex:1 1 calc(50% - 5px);min-width:0;padding:13px 15px}
  .stat b{font-size:21px}
  .scroll-hint{margin-top:28px}

  .controls{padding:12px 16px}
  .controls-row{padding:10px;gap:10px}
  .search{flex:1 1 100%;min-width:0}
  .filters{flex:1 1 auto}
  .chip{flex:1 1 auto;text-align:center}
  .sortwrap{margin-left:auto}

  .grid{padding:12px 16px 32px;gap:15px;
    grid-template-columns:repeat(auto-fill,minmax(min(100%,240px),1fr))}
  .card-title{font-size:15px}

  .about{padding:16px}
  .about-card{padding:26px 20px;border-radius:20px}
  .foot{flex-direction:column;padding:26px 16px 44px}

  .lightbox{padding:0}
  .lb-panel{width:100%;max-height:100vh;border-radius:0;border:none}
  .lb-video{border-radius:0}
  .lb-meta{padding:18px 18px 26px}
  .lb-meta h3{font-size:19px}
  .lb-close{top:10px;right:10px}
}

/* ===== Responsive: small phones ===== */
@media(max-width:400px){
  .hero-title{font-size:clamp(30px,9vw,38px)}
  .hero-tag{font-size:14.5px}
  .grid{grid-template-columns:1fr}
}

/* ===== Touch devices: no hover, so surface the play affordance ===== */
@media(hover:none){
  .card .play{opacity:1;background:rgba(5,7,15,.10)}
  .card .play span{width:46px;height:46px;font-size:16px}
  .card:hover{transform:none;box-shadow:none;border-color:var(--line)}
  .card:active{transform:scale(.985)}
  .btn:hover{transform:none}
}

/* respect reduced-motion & avoid sideways scroll on any device */
*{-webkit-tap-highlight-color:transparent}
img{max-width:100%}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  #fx{display:none}
}