[hidden]{display:none!important}

:root{
  --bg:#0b0f1a;
  --bg-soft:#111827;
  --panel:#151c2c;
  --panel-2:#1a2338;
  --line:rgba(148,163,184,.14);
  --text:#e7ecf5;
  --muted:#8b96ab;
  --accent:#5eead4;
  --accent-deep:#14b8a6;
  --accent-ink:#04231e;
  --danger:#f87171;
  --radius:16px;
  --font-display:'Sora',sans-serif;
  --font-body:'Inter',sans-serif;
  --font-mono:'JetBrains Mono',monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(20,184,166,.12), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(99,102,241,.10), transparent 60%),
    var(--bg);
  color:var(--text);
  min-height:100vh;
  display:flex;flex-direction:column;
}

/* ===== Header ===== */
.topbar{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:rgba(11,15,26,.72);
  border-bottom:1px solid var(--line);
}
.topbar-inner{
  max-width:1200px;margin:0 auto;height:66px;
  display:flex;align-items:center;gap:28px;padding:0 24px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text)}
.brand-mark{
  font-family:var(--font-mono);font-size:15px;
  background:linear-gradient(135deg,var(--accent),#818cf8);
  color:var(--accent-ink);padding:5px 8px;border-radius:8px;font-weight:700;
}
.brand-name{font-family:var(--font-display);font-weight:700;font-size:17px;letter-spacing:-.02em}
.brand-name em{font-style:normal;color:var(--accent)}
.topnav{display:flex;gap:22px;margin-left:8px}
.topnav a{color:var(--muted);text-decoration:none;font-size:14px;font-weight:500;transition:color .15s}
.topnav a:hover{color:var(--text)}
#topCta{margin-left:auto}

/* ===== Buttons ===== */
.btn{
  font-family:var(--font-display);font-weight:600;font-size:15px;
  border:none;border-radius:12px;padding:13px 24px;cursor:pointer;
  transition:transform .12s ease, box-shadow .12s ease, background .15s;
  display:inline-flex;align-items:center;gap:8px;
}
.btn:active{transform:translateY(1px) scale(.99)}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}
.btn-accent{
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));
  color:var(--accent-ink);box-shadow:0 6px 24px rgba(20,184,166,.28);
}
.btn-accent:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 10px 30px rgba(20,184,166,.4)}
.btn-ghost{background:rgba(148,163,184,.1);color:var(--text);border:1px solid var(--line)}
.btn-ghost:hover{background:rgba(148,163,184,.18)}
.btn-danger{background:rgba(248,113,113,.12);color:var(--danger);border:1px solid rgba(248,113,113,.3)}
.btn-danger:hover{background:rgba(248,113,113,.2)}
.btn-sm{padding:8px 14px;font-size:13px;border-radius:9px}
.icon-btn{
  background:transparent;border:1px solid var(--line);color:var(--muted);
  border-radius:8px;width:30px;height:30px;cursor:pointer;font-size:15px;line-height:1;
  transition:color .15s,border-color .15s;
}
.icon-btn:hover{color:var(--text);border-color:var(--muted)}

/* ===== Layout ===== */
.layout{
  flex:1;max-width:1200px;width:100%;margin:0 auto;
  display:grid;grid-template-columns:290px 1fr;gap:28px;
  padding:32px 24px 64px;align-items:start;
}

/* ===== Sidebar ===== */
.sidebar{
  position:sticky;top:90px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;max-height:calc(100vh - 130px);display:flex;flex-direction:column;
}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.sidebar-head h2{font-family:var(--font-display);font-size:15px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.history-list{overflow-y:auto;display:flex;flex-direction:column;gap:8px}
.history-item{
  text-align:left;width:100%;background:var(--panel-2);border:1px solid transparent;
  border-radius:12px;padding:12px 14px;cursor:pointer;color:var(--text);
  transition:border-color .15s, transform .12s;font-family:var(--font-body);
}
.history-item:hover{border-color:rgba(94,234,212,.4);transform:translateX(2px)}
.history-item.active{border-color:var(--accent)}
.history-item .hi-title{font-weight:600;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-bottom:3px}
.history-item .hi-meta{font-size:12px;color:var(--muted);display:flex;gap:8px}

/* ===== Hero card ===== */
.main-col{display:flex;flex-direction:column;gap:20px;min-width:0}
.hero-card{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);border-radius:22px;padding:48px 44px;
}
.hero-glow{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(600px 260px at 85% 0%, rgba(94,234,212,.14), transparent 65%);
}
.hero-content{position:relative;z-index:2}
.eyebrow{
  display:inline-block;font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--accent);border:1px solid rgba(94,234,212,.35);
  padding:5px 12px;border-radius:999px;margin-bottom:18px;
}
h1{
  font-family:var(--font-display);font-size:clamp(26px,3.4vw,38px);
  font-weight:800;letter-spacing:-.03em;line-height:1.15;margin-bottom:14px;
}
.lede{color:var(--muted);font-size:16px;line-height:1.6;max-width:560px;margin-bottom:26px}
.lede strong{color:var(--text)}

.url-form{display:flex;gap:12px}
.url-field{
  flex:1;display:flex;align-items:center;gap:10px;
  background:rgba(11,15,26,.6);border:1px solid var(--line);border-radius:12px;
  padding:0 16px;transition:border-color .15s, box-shadow .15s;
}
.url-field:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(94,234,212,.15)}
.url-icon{opacity:.6;font-size:14px}
.url-field input{
  flex:1;background:transparent;border:none;outline:none;color:var(--text);
  font-family:var(--font-mono);font-size:14px;padding:15px 0;min-width:0;
}
.url-field input::placeholder{color:#556077}

.limits{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.limit-chip{
  font-size:12.5px;color:var(--muted);background:rgba(148,163,184,.08);
  border:1px solid var(--line);border-radius:999px;padding:6px 14px;
}

/* ===== Status / error ===== */
.status-box{
  display:flex;align-items:center;gap:16px;
  background:rgba(94,234,212,.06);border:1px solid rgba(94,234,212,.25);
  border-radius:var(--radius);padding:18px 22px;
}
.status-spinner{
  width:26px;height:26px;border-radius:50%;flex-shrink:0;
  border:3px solid rgba(94,234,212,.2);border-top-color:var(--accent);
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

.error-box{
  display:flex;align-items:center;gap:14px;
  background:rgba(248,113,113,.08);border:1px solid rgba(248,113,113,.35);
  border-radius:var(--radius);padding:16px 20px;color:#fecaca;
}
.error-icon{
  width:24px;height:24px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;
  background:rgba(248,113,113,.2);color:var(--danger);font-size:12px;font-weight:700;
}
.error-box p{flex:1;font-size:14px;line-height:1.5}
.error-dismiss{border-color:rgba(248,113,113,.3);color:#fca5a5;font-size:18px}

/* ===== Result card ===== */
.result-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;animation:rise .35s ease;
}
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.result-head{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 26px;border-bottom:1px solid var(--line);background:var(--panel-2);
}
.result-meta{min-width:0}
.result-head h2{
  font-family:var(--font-display);font-size:19px;font-weight:700;letter-spacing:-.01em;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:460px;
}
.result-actions{display:flex;gap:8px;flex-wrap:wrap}

.segments{padding:14px 12px;max-height:60vh;overflow-y:auto}
.segment{
  display:grid;grid-template-columns:170px 1fr;gap:16px;
  padding:11px 14px;border-radius:10px;transition:background .12s;
}
.segment:hover{background:rgba(148,163,184,.06)}
.segment .ts{
  font-family:var(--font-mono);font-size:12.5px;color:var(--accent);
  white-space:nowrap;padding-top:2px;
}
.segment .tx{font-size:15px;line-height:1.65;color:#d5dced}

/* ===== misc ===== */
.muted{color:var(--muted)}
.small{font-size:13px;line-height:1.5}
.footer{border-top:1px solid var(--line);padding:22px 24px;text-align:center}
.footer p{color:var(--muted);font-size:12.5px}

.toast{
  position:fixed;bottom:28px;left:50%;transform:translateX(-50%);z-index:100;
  background:var(--accent);color:var(--accent-ink);font-weight:600;font-family:var(--font-display);
  font-size:14px;padding:12px 22px;border-radius:999px;box-shadow:0 10px 30px rgba(0,0,0,.4);
  animation:rise .25s ease;
}

/* ===== Responsive ===== */
@media (max-width:920px){
  .layout{grid-template-columns:1fr}
  .sidebar{position:static;order:2;max-height:none}
  .main-col{order:1}
  .topnav{display:none}
  .hero-card{padding:32px 24px}
  .url-form{flex-direction:column}
  .url-form .btn{justify-content:center}
  .segment{grid-template-columns:1fr;gap:4px}
  .result-head h2{max-width:100%}
}