:root {
  --bg: #050B18;
  --bg-panel: #0A1830;
  --bg-panel-2: #0E1E3A;
  --bg-raised: #12233F;
  --text: #EAF2FF;
  --text-soft: #93A9C7;
  --text-mute: #5C7295;
  --cyan: #2FB6F6;
  --cyan-dark: #1585BE;
  --cyan-glow: rgba(47, 182, 246, 0.35);
  --line: rgba(140, 180, 255, 0.14);
  --line-strong: rgba(140, 180, 255, 0.32);
  --green: #8BC34A;
  --amber: #FFC107;
  --orange: #FF7A1A;
  --coral: #FF4D4D;
  --danger: #FF5C5C;
  --radius: 8px;
  --radius-lg: 14px;
  --container: 1140px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { color-scheme: dark; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em; background: rgba(255,255,255,0.06); padding: 0.1em 0.4em; border-radius: 4px; }
h1 { font-size: 1.7rem; font-weight: 800; letter-spacing: -0.02em; margin: 0 0 0.35em; line-height: 1.2; }
h2 { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.01em; margin: 0 0 0.4em; }
p { margin: 0 0 1em; }
.muted { color: var(--text-soft); }
.small { font-size: 0.85rem; }
.ok { color: var(--green); font-weight: 600; }
.warn { color: var(--amber); font-weight: 600; }
.link { color: var(--cyan); }
.eyebrow {
  color: var(--cyan);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 0.6em;
}

.bg-glow {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(60% 45% at 50% -5%, rgba(47,182,246,0.16), transparent 70%),
    radial-gradient(40% 30% at 90% 100%, rgba(21,133,190,0.12), transparent 70%);
}

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.main { flex: 1; padding: 36px 20px 60px; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(5, 11, 24, 0.85);
  backdrop-filter: blur(10px);
  position: sticky; top: 0; z-index: 10;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.signal-mark { display: flex; align-items: center; gap: 10px; color: var(--text); }
.signal-mark:hover { text-decoration: none; }
.signal-mark-svg { width: 34px; height: 34px; }
.signal-wordmark { display: flex; flex-direction: column; line-height: 1.05; }
.signal-wordmark .name { font-weight: 700; font-size: 1rem; }
.signal-wordmark .tagline { color: var(--cyan); font-size: 0.6rem; letter-spacing: 0.16em; text-transform: uppercase; font-weight: 600; }
.nav { display: flex; align-items: center; gap: 22px; font-size: 0.92rem; font-weight: 500; }
.nav a { color: var(--text-soft); }
.nav a:hover, .nav a.active { color: var(--text); text-decoration: none; }
.nav .inline { margin: 0; }
.signal-wordmark .name { white-space: nowrap; }
@media (max-width: 560px) {
  .header-inner { gap: 10px; }
  .nav { gap: 12px; font-size: 0.85rem; }
  .signal-wordmark .name { font-size: 0.9rem; }
  .signal-wordmark .tagline { font-size: 0.55rem; }
}
@media (max-width: 440px) {
  .signal-wordmark { display: none; }
  .main { padding-top: 22px; }
  .card { padding: 20px 18px; }
}

.site-footer { border-top: 1px solid var(--line); padding: 18px 0; font-size: 0.82rem; color: var(--text-mute); }
.site-footer .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* Layout */
.narrow { max-width: 460px; margin: 30px auto 0; }
.narrow.wide { max-width: 640px; }
.grid-2 { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 22px; align-items: start; margin-bottom: 22px; }
.grid-2.equal { grid-template-columns: 1fr 1fr; }
@media (max-width: 880px) { .grid-2, .grid-2.equal { grid-template-columns: 1fr; } }

.card {
  background: linear-gradient(180deg, var(--bg-panel), var(--bg-panel-2));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px 28px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.25);
}
.card.center { text-align: center; }
.section-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 10px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5em;
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,0.02);
  color: var(--text);
  padding: 0.7em 1.3em;
  border-radius: var(--radius);
  font: inherit; font-size: 0.95rem; font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}
.btn:hover { background: rgba(47,182,246,0.1); border-color: var(--cyan); transform: translateY(-1px); text-decoration: none; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn-primary { background: linear-gradient(135deg, var(--cyan), var(--cyan-dark)); border-color: var(--cyan); color: #03101c; font-weight: 600; }
.btn-primary:hover { box-shadow: 0 0 22px var(--cyan-glow); background: linear-gradient(135deg, var(--cyan), var(--cyan-dark)); }
.btn-lg { padding: 0.9em 1.8em; font-size: 1rem; width: 100%; }
.btn-sm { padding: 0.45em 0.9em; font-size: 0.85rem; }
.btn-danger { border-color: rgba(255,92,92,0.5); color: var(--danger); }
.btn-danger:hover { background: rgba(255,92,92,0.12); border-color: var(--danger); }

/* Forms */
.form { display: flex; flex-direction: column; gap: 14px; margin-top: 12px; }
.form label { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 6px; font-size: 0.88rem; font-weight: 600; color: var(--text-soft); }
.form .opt { font-weight: 400; color: var(--text-mute); }
.form .hint { flex-basis: 100%; font-weight: 400; color: var(--text-mute); font-size: 0.8rem; }
.form label > input, .form label > textarea, .form label > select { flex-basis: 100%; }
.form input, .form textarea, .form select {
  font: inherit; color: var(--text);
  background: rgba(5, 11, 24, 0.6);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 0.65em 0.85em;
  width: 100%;
}
.form input:focus, .form textarea:focus, .form select:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(47,182,246,0.18); }
.form input:disabled { opacity: 0.5; }
.form textarea { resize: vertical; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 560px) { .form .row { grid-template-columns: 1fr; } }

.alert { border-radius: var(--radius); padding: 12px 14px; font-size: 0.9rem; margin: 0 0 16px; border: 1px solid; }
.alert-danger { background: rgba(255,92,92,0.1); border-color: rgba(255,92,92,0.4); color: #ffb3b3; }
.alert-warn { background: rgba(255,193,7,0.08); border-color: rgba(255,193,7,0.4); color: #ffe082; }
.alert-ok { background: rgba(139,195,74,0.1); border-color: rgba(139,195,74,0.4); color: #cfe9a8; }
.badge { display: inline-block; padding: 0.2em 0.65em; border-radius: 999px; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; }
.badge-ok { background: rgba(139,195,74,0.15); color: var(--green); }
.badge-warn { background: rgba(255,193,7,0.15); color: var(--amber); }
.badge-danger { background: rgba(255,92,92,0.15); color: var(--danger); }
.badge-muted { background: rgba(140,180,255,0.1); color: var(--text-soft); }

/* Dropzone */
.dropzone {
  border: 2px dashed var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 30px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  margin-top: 12px;
}
.dropzone:hover, .dropzone:focus, .dropzone.drag { border-color: var(--cyan); background: rgba(47,182,246,0.06); outline: none; }
.dz-logo { width: 48px; height: 48px; margin-bottom: 6px; }
.dz-title { font-weight: 700; font-size: 1.05rem; margin: 0 0 4px; }
.dz-sub { color: var(--text-soft); font-size: 0.88rem; margin: 0; }

.file-list { list-style: none; margin: 14px 0 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.file-list li {
  display: flex; align-items: center; gap: 10px;
  background: rgba(5, 11, 24, 0.5);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-size: 0.9rem;
}
.file-list .fname { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-list .fsize { color: var(--text-mute); font-size: 0.82rem; white-space: nowrap; }
.file-list .fremove { background: none; border: none; color: var(--text-mute); cursor: pointer; font-size: 1.1rem; line-height: 1; padding: 2px 4px; }
.file-list .fremove:hover { color: var(--danger); }
.file-list.compact li { padding: 6px 10px; font-size: 0.85rem; }
.file-list .fstate { font-size: 0.78rem; color: var(--text-soft); min-width: 60px; text-align: right; }
.file-list .fstate.done { color: var(--green); }
.file-list .fstate.err { color: var(--danger); }

/* Progress */
.progress-panel { margin-top: 18px; }
.progress-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 8px; flex-wrap: wrap; }
.bar { height: 10px; border-radius: 999px; background: rgba(255,255,255,0.06); overflow: hidden; border: 1px solid var(--line); }
.bar-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--cyan-dark), var(--cyan)); transition: width 0.2s; box-shadow: 0 0 14px var(--cyan-glow); }
.progress-panel .btn { margin-top: 14px; }

/* Result */
.result-panel { margin-top: 18px; text-align: center; }
.result-icon { width: 56px; height: 56px; border-radius: 50%; margin: 0 auto 12px; display: grid; place-items: center; font-size: 1.6rem; font-weight: 800; color: #03101c; background: linear-gradient(135deg, var(--green), #5c9d1b); box-shadow: 0 0 24px rgba(139,195,74,0.4); }
.linkbox { display: flex; gap: 8px; margin: 12px 0; }
.linkbox input { flex: 1; font: inherit; font-size: 0.9rem; color: var(--text); background: rgba(5,11,24,0.6); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 0.6em 0.8em; min-width: 0; }
.result-panel .btn + .btn, .result-panel #new-btn { margin-top: 8px; }

/* Stats */
.stats { display: grid; grid-template-columns: 1fr; gap: 10px; margin: 6px 0 14px; }
.stats > div { display: flex; flex-direction: column; background: rgba(5,11,24,0.5); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 12px; }
.stat-num { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.02em; }
.stat-label { color: var(--text-mute); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; }

/* Table */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.table th { text-align: left; color: var(--text-mute); font-weight: 600; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; padding: 8px 10px; border-bottom: 1px solid var(--line-strong); white-space: nowrap; }
.table td { padding: 10px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table td.nowrap { white-space: nowrap; }
.table .t-title { font-weight: 600; max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.table .t-sub { color: var(--text-mute); font-size: 0.78rem; font-weight: 400; display: block; max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.table .actions { display: flex; gap: 6px; justify-content: flex-end; white-space: nowrap; }
.table .btn-sm { padding: 0.35em 0.7em; font-size: 0.8rem; }

/* Key-value */
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 20px; margin: 0; font-size: 0.9rem; }
.kv dt { color: var(--text-mute); }
.kv dd { margin: 0; word-break: break-all; }
@media (max-width: 560px) { .kv { grid-template-columns: 1fr; gap: 2px; } .kv dd { margin-bottom: 8px; } }

/* Download page */
.message { background: rgba(5,11,24,0.55); border-left: 3px solid var(--cyan); border-radius: 0 var(--radius) var(--radius) 0; padding: 12px 14px; white-space: pre-wrap; margin: 0 0 18px; }
.dl-files { list-style: none; margin: 0 0 18px; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.dl-file { display: flex; align-items: center; justify-content: space-between; gap: 12px; background: rgba(5,11,24,0.5); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 14px; }
.dl-file-info { display: flex; flex-direction: column; min-width: 0; }
.dl-file-name { font-weight: 600; overflow-wrap: anywhere; }
.dl-file-size { color: var(--text-mute); font-size: 0.82rem; overflow-wrap: anywhere; }
.dl-file-size .md5 { font-size: 0.75rem; user-select: all; }
.dl-actions { margin-bottom: 16px; }

.toast { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); background: var(--bg-raised); border: 1px solid var(--line-strong); color: var(--text); padding: 10px 16px; border-radius: var(--radius); font-size: 0.9rem; box-shadow: 0 8px 30px rgba(0,0,0,0.4); z-index: 50; }