/* YT Downloader — UI local, 0 dependencias JS, iconos SVG inline */
:root{
  --bg:#0b0b10;
  --card:rgba(255,255,255,.055);
  --card-border:rgba(255,255,255,.10);
  --line:rgba(255,255,255,.10);
  --text:#f6f7fb;
  --muted:#a2a8bf;
  --muted-2:#c9cede;
  --accent:#ff3b30;
  --accent-2:#ff6b35;
  --accent-3:#7c3aed;
  --ok:#10b981;
  --danger:#ff6b62;
  --radius:22px;
  --radius-sm:14px;
  --shadow:0 20px 60px rgba(0,0,0,.45), 0 1px 0 rgba(255,255,255,.06) inset;
  --focus:#7dd3fc;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{height:100%}
body{
  margin:0;
  font-family:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  font-size:1rem;
  line-height:1.5;
}
a{color:inherit}
code{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:.86em;background:rgba(255,255,255,.08);padding:.1em .4em;border-radius:6px}
.wrap{width:min(1060px,92vw);margin:0 auto}
.visually-hidden{position:absolute!important;clip-path:inset(50%)!important;overflow:hidden!important;width:1px!important;height:1px!important;margin:-1px!important;padding:0!important;border:0!important;white-space:nowrap!important}
.skip{position:absolute;left:12px;top:-60px;z-index:99;background:#fff;color:#111;padding:10px 14px;border-radius:10px;font-weight:700;transition:top .18s}
.skip:focus{top:12px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:8px}

/* bg */
.bg{position:fixed;inset:0;z-index:-1;overflow:hidden;background:
  radial-gradient(900px 600px at 18% 8%, rgba(255,59,48,.16), transparent 60%),
  radial-gradient(900px 700px at 85% 18%, rgba(124,58,237,.16), transparent 60%),
  radial-gradient(700px 500px at 45% 95%, rgba(255,107,53,.12), transparent 60%),
  linear-gradient(180deg,#08080c 0%, #0b0b10 100%)}
.blob{position:absolute;border-radius:999px;filter:blur(45px);pointer-events:none}
.blob-1{width:620px;height:620px;left:-120px;top:-220px;background:radial-gradient(circle at 30% 30%, #ff6b35, #ff3b30 55%, transparent 70%);opacity:.22}
.blob-2{width:720px;height:720px;right:-160px;top:-120px;background:radial-gradient(circle at 50% 30%, #7c3aed, #3b82f6 50%, transparent 72%);opacity:.20}
.blob-3{width:900px;height:520px;left:20%;bottom:-220px;background:radial-gradient(ellipse at center, rgba(255,59,48,.12), transparent 70%)}
.grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);background-size:46px 46px;mask-image:radial-gradient(800px 600px at 50% 20%, black 30%, transparent 75%);opacity:.28}

/* header */
.header{position:sticky;top:0;z-index:20;backdrop-filter:blur(16px) saturate(1.4);background:rgba(11,11,16,.78);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 0;gap:12px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo{width:40px;height:40px;display:grid;place-items:center;border-radius:13px;background:linear-gradient(135deg,#FF3B30,#FF6B35 55%,#7c3aed);color:#fff;box-shadow:0 10px 30px rgba(255,59,48,.30)}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text strong{font-family:"Space Grotesk",sans-serif;font-size:1.1rem;letter-spacing:-.03em}
.brand-text strong span{font-weight:500}
.brand-text small{font-size:.68rem;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
.nav{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.nav a:not(.btn){font-size:.86rem;color:var(--muted-2);text-decoration:none;padding:8px 6px}
.nav a:not(.btn):hover{color:#fff}

/* buttons — min 44px targets */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;min-height:44px;border-radius:999px;border:1px solid transparent;font-weight:700;font-size:.88rem;letter-spacing:-.01em;cursor:pointer;transition:transform .16s,filter .16s,background .16s;text-decoration:none;user-select:none}
.btn:active{transform:translateY(1px)}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 12px 24px rgba(255,59,48,.28), 0 1px 0 rgba(255,255,255,.2) inset}
.btn.primary:hover{filter:brightness(1.07)}
.btn.secondary{background:rgba(255,255,255,.09);color:var(--text);border-color:var(--line)}
.btn.secondary:hover{background:rgba(255,255,255,.13)}
.btn.ghost{background:rgba(255,255,255,.06);color:var(--text);border-color:var(--line)}
.btn.ghost:hover{background:rgba(255,255,255,.10)}
.btn.tiny{padding:7px 12px;font-size:.78rem;min-height:36px}
.btn.large{padding:13px 20px;font-size:.95rem;min-height:50px}
.btn[disabled]{opacity:.6;cursor:wait}
.btn.danger.ghost{color:#ffd7d4;background:rgba(255,59,48,.12);border-color:rgba(255,59,48,.25)}

/* main + hero */
.main{padding:20px 0 40px}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:center;padding:26px 0 8px}
.hero-copy h1{margin:0 0 10px;font-family:"Space Grotesk",sans-serif;font-weight:700;letter-spacing:-.05em;line-height:.98;font-size:clamp(2rem,5vw,3.4rem)}
.hero-copy h1 .grad{background:linear-gradient(135deg,#ff3b30 0%,#ff6b35 40%,#7c3aed 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.lead{margin:0;color:var(--muted);font-size:1.02rem;line-height:1.65;max-width:34rem}
.hero-points{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:8px}
.hero-points li{display:flex;align-items:center;gap:10px;font-size:.92rem;color:var(--muted-2)}
.hero-points svg{color:var(--ok);flex:0 0 auto}
.hero-art{position:relative;display:grid;place-items:center;padding:10px;min-height:300px}
.art-glow{position:absolute;inset:15% 10%;background:radial-gradient(ellipse at 30% 20%, rgba(255,59,48,.22), transparent 55%),radial-gradient(ellipse at 80% 80%, rgba(124,58,237,.18), transparent 60%);filter:blur(22px)}
.art-card{position:relative;width:100%;max-width:360px;border-radius:20px;overflow:hidden;background:linear-gradient(180deg,rgba(26,26,34,.88),rgba(18,18,24,.8));border:1px solid rgba(255,255,255,.10);box-shadow:var(--shadow)}
.art-thumb{position:relative;aspect-ratio:16/9;background:#0a0a0f}
.art-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.art-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:48px;height:48px;display:grid;place-items:center;border-radius:50%;background:rgba(0,0,0,.6);border:1px solid rgba(255,255,255,.16);color:#fff}
.art-duration,.art-hd{position:absolute;padding:5px 9px;border-radius:999px;font-size:.7rem;font-weight:800;border:1px solid rgba(255,255,255,.16)}
.art-duration{right:10px;bottom:10px;background:rgba(0,0,0,.7);color:#fff}
.art-hd{left:10px;top:10px;background:rgba(255,255,255,.12);color:#fff;backdrop-filter:blur(8px)}
.art-body{padding:14px;display:grid;gap:8px}
.art-pills{display:flex;gap:7px;flex-wrap:wrap}
.pill{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:999px;font-size:.68rem;font-weight:800;letter-spacing:.05em}
.pill-live{background:rgba(255,255,255,.08);border:1px solid var(--line)}
.pill-dot{width:7px;height:7px;border-radius:50%;background:var(--ok)}
.pill-size{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}
.art-title{margin:0;font-family:"Space Grotesk",sans-serif;font-weight:700;letter-spacing:-.02em}
.art-channel{margin:0;font-size:.8rem;color:var(--muted)}
.art-progress{display:flex;align-items:center;gap:10px;background:rgba(255,255,255,.04);border-top:1px solid var(--line);margin:4px -14px -14px;padding:12px 14px}
.art-bar{flex:1;height:6px;border-radius:999px;background:rgba(255,255,255,.1);overflow:hidden}
.art-bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-2),var(--accent-3))}
.art-progress-label{font-size:.7rem;color:var(--muted);font-family:"JetBrains Mono",monospace}

/* cards + form (guía forms: label visible encima, ayuda cerca) */
.card{background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.03));border:1px solid var(--card-border);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(18px) saturate(1.2);padding:20px;margin-top:18px}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.card-head h2{display:flex;align-items:center;gap:10px;margin:0;font-size:1rem;letter-spacing:-.02em}
.h-icon{width:30px;height:30px;display:grid;place-items:center;border-radius:10px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}
.hint{font-size:.75rem;color:var(--muted);border:1px solid var(--line);padding:6px 11px;border-radius:999px;background:rgba(255,255,255,.05)}
.field-label{display:block;font-weight:700;font-size:.9rem;margin:0 0 8px}
.field-label span{color:var(--danger)}
.field{position:relative;display:flex;align-items:center;gap:10px;padding:8px 8px 8px 8px;background:rgba(255,255,255,.06);border-radius:16px;border:1px solid var(--line)}
.field:focus-within{border-color:rgba(255,59,48,.4);box-shadow:0 0 0 4px rgba(255,59,48,.12)}
.field-icon{width:40px;height:40px;display:grid;place-items:center;border-radius:11px;background:rgba(255,255,255,.08);border:1px solid var(--line);flex:0 0 40px}
.field input{flex:1;border:0;outline:0;background:transparent;font-size:1rem;color:var(--text);min-width:0;min-height:44px}
.field input::placeholder{color:var(--muted)}
.field input:user-invalid{color:#ffd7d4}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:11px;background:rgba(255,255,255,.07);border:1px solid var(--line);color:var(--text);cursor:pointer}
.icon-btn:hover{background:rgba(255,255,255,.12)}
.icon-btn[hidden]{display:none!important}
.field-help{margin:8px 2px 0;font-size:.8rem;color:var(--muted)}
.field-error{margin:8px 2px 0;font-size:.85rem;color:#ffc9c5;font-weight:600}
.alert{margin-top:14px;padding:12px 14px;border-radius:14px;font-size:.88rem;line-height:1.5;border:1px solid rgba(255,59,48,.25);background:rgba(255,59,48,.10);color:#ffd9d6}
.alert.ok{border-color:rgba(16,185,129,.3);background:rgba(16,185,129,.10);color:#d3f8e4}
.alert[hidden]{display:none}
.net-fallback{margin-top:12px;padding:14px;border-radius:14px;border:1px solid rgba(125,211,252,.3);background:rgba(125,211,252,.07)}
.net-fallback[hidden]{display:none}
.net-fallback p{margin:0 0 10px;font-size:.85rem;color:var(--muted-2)}
.net-fallback p strong{color:#fff}
.net-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.net-actions code{flex:1 1 220px;overflow-x:auto;white-space:nowrap;padding:10px 12px;border-radius:10px}

.options{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px}
.opt{border:1px solid var(--line);border-radius:16px;padding:12px;margin:0;background:rgba(255,255,255,.03);min-width:0}
.opt legend{font-size:.72rem;color:var(--muted);letter-spacing:.07em;text-transform:uppercase;font-weight:700;padding:0 8px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{position:relative;display:inline-flex;cursor:pointer}
.chip input{position:absolute;clip-path:inset(50%);width:1px;height:1px;overflow:hidden;white-space:nowrap}
.chip span{display:inline-flex;align-items:center;min-height:44px;padding:10px 14px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--muted-2);font-weight:700;font-size:.84rem;transition:.16s}
.chip input:checked + span{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border-color:transparent;box-shadow:0 8px 18px rgba(255,59,48,.25)}
.chip input:focus-visible + span{outline:3px solid var(--focus);outline-offset:2px}
.segmented{display:grid;grid-template-columns:1fr 1fr;gap:6px;background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:14px;padding:5px}
.seg{position:relative;display:flex;align-items:center;gap:9px;cursor:pointer;border-radius:10px;padding:6px 10px;min-height:52px}
.seg input{position:absolute;clip-path:inset(50%);width:1px;height:1px;overflow:hidden}
.seg span{display:flex;flex-direction:column;line-height:1.15;font-weight:700;font-size:.84rem}
.seg span small{font-weight:500;color:var(--muted);font-size:.72rem}
.seg:has(input:checked){background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}
.seg:has(input:checked) span small{color:rgba(255,255,255,.85)}
.seg:has(input:focus-visible){outline:3px solid var(--focus);outline-offset:2px}
.opt-hint{margin:10px 2px 0;font-size:.78rem;color:var(--muted)}
.actions{display:flex;align-items:center;gap:10px;margin-top:16px;flex-wrap:wrap}

/* preview */
.preview{padding:0;overflow:hidden}
.preview[hidden]{display:none}
.preview-layout{display:grid;grid-template-columns:320px 1fr;gap:18px;padding:18px}
.thumb-wrap{position:relative;border-radius:16px;overflow:hidden;background:#0a0a0f;aspect-ratio:16/10;border:1px solid rgba(255,255,255,.10)}
.thumb-wrap img{width:100%;height:100%;object-fit:cover;display:block}
.thumb-badge{position:absolute;right:10px;bottom:10px;padding:6px 9px;border-radius:999px;background:rgba(0,0,0,.78);color:#fff;font-size:.7rem;font-weight:800;border:1px solid rgba(255,255,255,.16)}
.pv-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.badge-soft{padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid var(--line);font-size:.68rem;letter-spacing:.07em;font-weight:800;color:var(--muted-2)}
.pv-size{padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.08);font-weight:800;font-size:.76rem;border:1px solid var(--line)}
.pv-quality{padding:6px 10px;border-radius:999px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-weight:800;font-size:.76rem}
.pv-meta h3{margin:0;font-size:1.25rem;line-height:1.25;letter-spacing:-.03em}
.pv-sub{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:8px 0 0;color:var(--muted-2);font-size:.85rem}
.pv-channel{padding:5px 10px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--line);font-weight:600}
.pv-desc{margin:10px 0 0;color:var(--muted);font-size:.85rem;line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.pv-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.pv-note{margin:10px 0 0;font-size:.78rem;color:var(--muted)}

/* progress */
.progress[hidden]{display:none}
.prog-head{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.prog-head h3{margin:0;display:flex;align-items:center;gap:9px;font-size:.92rem}
.spin{display:grid;place-items:center;width:24px;height:24px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid var(--line);animation:spin 1.1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.prog-eta{margin-left:auto;font-size:.76rem;color:var(--muted);font-family:"JetBrains Mono",monospace}
.bar{height:12px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid var(--line);overflow:hidden;padding:2px}
.bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-2),var(--accent-3));width:0%;transition:width .25s ease}
.bar-labels{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:.76rem;color:var(--muted-2);font-family:"JetBrains Mono",monospace;margin-top:8px;flex-wrap:wrap}
.bar-labels span:first-child{color:#fff;font-weight:800}
.prog-file{margin:12px 0 0;padding:10px 12px;border-radius:12px;background:rgba(255,255,255,.06);border:1px solid var(--line);font-size:.76rem;color:var(--muted-2);font-family:"JetBrains Mono",monospace;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.prog-done[hidden]{display:none}
.done-title{color:#d3f8e4;font-weight:700}
.prog-done-actions{display:flex;gap:10px;flex-wrap:wrap}

/* steps + compare */
.steps h2,.compare-head h2{margin:0 0 4px;font-size:1.15rem;letter-spacing:-.03em}
.compare-head p{margin:0;color:var(--muted);font-size:.9rem}
.steps-grid{list-style:none;margin:16px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.steps-grid li{border:1px solid var(--line);border-radius:16px;padding:14px;background:rgba(255,255,255,.03)}
.step-n{display:grid;place-items:center;width:30px;height:30px;border-radius:10px;background:linear-gradient(135deg,var(--accent),var(--accent-2));font-weight:800;font-size:.85rem}
.steps-grid h3{margin:10px 0 6px;font-size:.95rem}
.steps-grid p{margin:0;font-size:.84rem;color:var(--muted);line-height:1.6}
.table-wrap{overflow-x:auto;margin-top:14px;border:1px solid var(--line);border-radius:14px}
table{width:100%;border-collapse:collapse;font-size:.85rem;min-width:560px}
th,td{text-align:left;padding:11px 12px;border-bottom:1px solid rgba(255,255,255,.07);vertical-align:top}
thead th{font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:rgba(255,255,255,.04)}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
tbody th{font-weight:700}
td{color:var(--muted-2)}
.tag{padding:4px 9px;border-radius:999px;font-size:.72rem;font-weight:800}
.tag.ok{background:rgba(16,185,129,.14);color:#a7f3d0;border:1px solid rgba(16,185,129,.25)}
.compare-cta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:16px}
.mono{font-family:"JetBrains Mono",monospace;font-size:.76rem;color:var(--muted)}

/* footer + toast */
.footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 2px 6px;color:var(--muted);font-size:.76rem;flex-wrap:wrap}
.footer a{color:var(--muted-2)}
.toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%) translateY(14px);background:rgba(16,16,20,.96);color:#fff;padding:12px 16px;border-radius:14px;border:1px solid rgba(255,255,255,.12);font-size:.85rem;font-weight:600;opacity:0;pointer-events:none;transition:.22s;z-index:50;max-width:min(92vw,520px)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* responsive */
@media (max-width: 900px){
  .hero{grid-template-columns:1fr}
  .hero-art{min-height:auto}
  .preview-layout{grid-template-columns:1fr}
  .options{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
}
@media (max-width: 620px){
  .nav a:not(.btn){display:none}
  .nav .btn.tiny{padding:7px 10px;font-size:.74rem}
  .header-inner{gap:8px}
  .header-inner .nav{width:100%;justify-content:flex-start}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important}
}