*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-body: #f4f7f6;
  --bg-card: #ffffff;
  --bg-surface: #f8f9fa;
  --border: #e2e8f0;
  --border-hover: #cbd5e1;
  --text: #1e293b;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent: #990000;
  --accent-light: #cc0000;
  --accent-glow: rgba(153, 0, 0, 0.12);
  --accent-gradient: linear-gradient(135deg, #990000, #cc0000);
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --warn: #f59e0b;
  --error: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.08);
  --input-bg: #ffffff;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --header-bg: #990000;
  --header-text: #ffffff;
  --footer-bg: #990000;
  --footer-text: #ffffff;
  --tag: rgba(153, 0, 0, 0.08);
  --policy-bg: #ffffff;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg-body: #0a0a0f;
  --bg-card: #14141e;
  --bg-surface: #1a1a2e;
  --border: #2d2d44;
  --border-hover: #3d3d5a;
  --text: #e8edf4;
  --text-secondary: #94a3b8;
  --text-muted: #6b7a94;
  --accent: #8b5cf6;
  --accent-light: #a78bfa;
  --accent-glow: rgba(139, 92, 246, 0.2);
  --accent-gradient: linear-gradient(135deg, #8b5cf6, #7c3aed);
  --input-bg: #1a1a2e;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --header-bg: #1a1a2e;
  --footer-bg: #0d0d17;
  --footer-text: #94a3b8;
  --tag: rgba(139, 92, 246, 0.14);
  --policy-bg: #14141e;
  color-scheme: dark;
}

html { background: var(--bg-body); }

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--bg-body);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  -webkit-font-smoothing: antialiased;
  transition: background .3s ease, color .3s ease;
}

a { color: inherit; }
[hidden] { display: none !important; }

/* ── Header ─────────────────────────────────── */
.header {
  width: 100%;
  background: var(--header-bg);
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .1);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background .3s ease;
}

.header-brand { text-decoration: none; display: block; }

.header-logo {
  display: block;
  font-family: 'Poppins', sans-serif;
  font-size: 2.1rem;
  font-weight: 900;
  color: var(--header-text);
  letter-spacing: -.5px;
  line-height: 1.1;
}

.header-sub {
  display: block;
  margin-top: 2px;
  font-size: .72rem;
  letter-spacing: .5px;
  color: rgba(255, 255, 255, .75);
}

:root[data-theme="dark"] .header-sub { color: rgba(232, 237, 244, .5); }

.theme-toggle {
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--header-text);
  transition: all .3s ease;
}

.theme-toggle:hover { background: rgba(255, 255, 255, .2); transform: scale(1.05); }
.theme-toggle svg { width: 20px; height: 20px; }

/* ── Layout ─────────────────────────────────── */
.container {
  width: 100%;
  max-width: 720px;
  padding: 32px 18px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero { text-align: center; margin: 14px 0 4px; }

.badge {
  display: inline-block;
  padding: 5px 14px;
  background: var(--tag);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.hero h1 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.2;
  margin-bottom: 8px;
}

.hero p { font-size: .95rem; color: var(--text-secondary); }
.hero p .hl { color: var(--accent); font-weight: 600; }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: border-color .3s ease, background .3s ease;
}

.card:hover { border-color: var(--border-hover); }

/* ── Notice ─────────────────────────────────── */
.notice {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 18px;
  border-radius: 12px;
  font-size: .85rem;
  line-height: 1.5;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
}

.notice strong { color: var(--text); font-size: .9rem; }

.notice-error {
  background: var(--error-bg);
  border-color: rgba(239, 68, 68, .45);
}

.notice-error strong { color: var(--error); }

/* ── Tabs / panels ──────────────────────────── */
.tabs {
  display: flex;
  padding: 4px;
  gap: 4px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}

.tab {
  flex: 1;
  padding: 12px 20px;
  background: transparent;
  border: none;
  border-radius: 12px;
  color: var(--text-muted);
  font: 600 .75rem 'Inter', sans-serif;
  text-transform: uppercase;
  letter-spacing: .05em;
  cursor: pointer;
  position: relative;
  transition: all .3s ease;
}

.tab:hover { color: var(--text-secondary); background: var(--tag); }
.tab.active { color: var(--text); background: var(--tag); }

.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 30%;
  right: 30%;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 2px;
}

.panel { padding: 24px 20px; }

/* ── Dropzone ───────────────────────────────── */
.dropzone {
  border: 2px dashed var(--border-hover);
  border-radius: 14px;
  background: var(--input-bg);
  padding: 34px 18px;
  text-align: center;
  cursor: pointer;
  outline: none;
  transition: all .25s ease;
}

.dropzone:hover,
.dropzone:focus-visible,
.dropzone.dragover {
  border-color: var(--accent);
  background: var(--tag);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.dropzone.disabled {
  cursor: not-allowed;
  border-color: var(--error);
  background: var(--error-bg);
  box-shadow: none;
}

.dz-icon {
  width: 46px;
  height: 46px;
  margin: 0 auto 12px;
  color: var(--accent);
}

.dz-icon svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.dz-title { font-weight: 600; font-size: .98rem; }
.dz-sub { color: var(--text-muted); font-size: .82rem; margin-top: 2px; }

.pills { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin-top: 14px; }

.pills span {
  padding: 3px 10px;
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 100px;
}

.dz-hint { margin-top: 12px; font-size: .75rem; color: var(--text-muted); }

kbd {
  font: 600 .7rem 'Inter', sans-serif;
  padding: 1px 6px;
  border: 1px solid var(--border-hover);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--bg-surface);
  color: var(--text-secondary);
}

/* ── Buttons / inputs ───────────────────────── */
.input-wrapper { display: flex; gap: 12px; align-items: stretch; }

.url-input {
  flex: 1;
  min-width: 0;
  min-height: 50px;
  background: var(--input-bg);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 14px 18px;
  color: var(--text);
  font: .9rem 'Inter', sans-serif;
  outline: none;
  transition: all .3s ease;
}

.url-input::placeholder { color: var(--text-muted); }
.url-input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-glow); }

.btn {
  padding: 14px 26px;
  background: var(--accent-gradient);
  border: none;
  border-radius: 12px;
  color: #fff;
  font: 600 .9rem 'Inter', sans-serif;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
  text-decoration: none;
  box-shadow: 0 4px 16px var(--accent-glow);
  transition: all .3s ease;
}

.btn:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 8px 24px var(--accent-glow); }
.btn:active:not(:disabled) { transform: none; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-hover);
  box-shadow: none;
}

.btn-ghost:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); box-shadow: none; }

.mini-btn,
.copy-btn {
  padding: 4px 12px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font: 500 .7rem 'Inter', sans-serif;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all .2s ease;
}

.mini-btn:hover,
.copy-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }

.copy-btn.done,
.mini-btn.done { border-color: var(--success); color: var(--success); background: var(--success-bg); }

.mini-btn.danger:hover { border-color: var(--error); color: var(--error); background: var(--error-bg); }

/* ── Results ────────────────────────────────── */
.results-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 20px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}

.results-label {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.results-actions { display: flex; gap: 6px; flex-wrap: wrap; }

.result-list { max-height: 520px; overflow-y: auto; }
.result-list::-webkit-scrollbar { width: 4px; }
.result-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.result-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  animation: slideUp .3s ease both;
  transition: background .2s ease;
}

.result-item:last-child { border-bottom: none; }
.result-item:hover { background: var(--bg-surface); }
.result-item.is-error { background: var(--error-bg); }

@keyframes slideUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.r-thumb {
  width: 56px;
  height: 56px;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  display: block;
}

.r-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.r-head { display: flex; align-items: baseline; gap: 8px; min-width: 0; }
.r-name { font-size: .85rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.r-size { font-size: .7rem; color: var(--text-muted); flex-shrink: 0; }
.r-error { font-size: .78rem; color: var(--error); line-height: 1.4; }
.r-side { display: flex; flex-direction: column; gap: 6px; flex-shrink: 0; }

.link-rows { display: flex; flex-direction: column; gap: 8px; }
.link-row { display: flex; align-items: center; gap: 10px; min-width: 0; }

.link-tag {
  width: 58px;
  text-align: center;
  padding: 2px 0;
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--tag);
  border-radius: 100px;
  flex-shrink: 0;
}

.link-url {
  flex: 1;
  min-width: 0;
  font-size: .8rem;
  font-weight: 600;
  color: var(--success);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-decoration: none;
}

a.link-url:hover { text-decoration: underline; }

.progress-track { height: 4px; border-radius: 4px; background: var(--border); overflow: hidden; }
.progress-fill { height: 100%; width: 0; background: var(--accent-gradient); transition: width .2s ease; }
.r-status { font-size: .72rem; color: var(--text-muted); }

/* ── Usage meters ───────────────────────────── */
.usage { padding: 18px 20px 16px; }

.usage-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.usage-title {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.usage-note { font-size: .72rem; color: var(--text-muted); }

.meter-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px 22px; }
.meter-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
.meter-label { font-size: .72rem; font-weight: 600; color: var(--text-secondary); }
.meter-pct { font-size: .72rem; font-weight: 700; color: var(--text-muted); }
.meter-track { height: 6px; border-radius: 6px; background: var(--border); overflow: hidden; }
.meter-fill { height: 100%; width: 0; border-radius: 6px; background: var(--success); transition: width .5s ease, background .3s ease; }
.meter-fill.warn { background: var(--warn); }
.meter-fill.full { background: var(--error); }
.meter-value { margin-top: 6px; font-size: .75rem; color: var(--text-muted); }

.usage-foot {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: .72rem;
  line-height: 1.55;
  color: var(--text-muted);
}

/* ── Policy bar / footer ────────────────────── */
.policy-bar {
  width: 100%;
  background: var(--policy-bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 14px 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.policy-bar a {
  font-size: .75rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color .2s ease;
}

.policy-bar a:hover { color: var(--accent); text-decoration: underline; }
.policy-bar .divider { color: var(--text-muted); opacity: .3; user-select: none; }

.footer {
  width: 100%;
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 16px 20px 14px;
  text-align: center;
  font-size: .75rem;
  transition: background .3s ease;
}

.footer-line { margin-top: 4px; opacity: .85; display: flex; justify-content: center; align-items: center; gap: 8px; flex-wrap: wrap; }

.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 4px;
  border-radius: 50%;
  background: #22c55e;
  animation: pulse 2s infinite;
}

.status-dot.err { background: #f87171; animation: none; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .4; } }

/* ── Toast ──────────────────────────────────── */
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translate(-50%, 20px);
  max-width: calc(100% - 32px);
  padding: 11px 20px;
  background: #1e293b;
  color: #fff;
  border-radius: 10px;
  font-size: .82rem;
  box-shadow: 0 8px 28px rgba(0, 0, 0, .3);
  opacity: 0;
  pointer-events: none;
  z-index: 300;
  transition: all .25s ease;
}

.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ── Share page ─────────────────────────────── */
.preview-card { padding: 0; }

.preview-media {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 18px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}

.preview-img { max-width: 100%; max-height: 62vh; border-radius: 10px; display: block; }
.preview-media .notice { width: 100%; }
.preview-info { padding: 16px 20px 4px; }
.preview-name { font-weight: 600; font-size: 1rem; word-break: break-word; }
.preview-meta { font-size: .78rem; color: var(--text-muted); margin-top: 2px; }
.preview-card .link-rows { padding: 12px 20px 4px; }
.preview-actions { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; padding: 14px 20px 20px; }
.preview-actions .btn { padding: 11px 22px; font-size: .85rem; }

/* ── Legal pages ────────────────────────────── */
.legal { padding: 28px 26px 30px; }
.legal h1 { font-family: 'Poppins', sans-serif; font-size: 1.5rem; font-weight: 700; letter-spacing: -.02em; }
.legal-updated { margin: 4px 0 20px; font-size: .78rem; color: var(--text-muted); }
.legal h2 { font-family: 'Poppins', sans-serif; font-size: 1rem; font-weight: 600; margin: 22px 0 6px; }
.legal p, .legal li { font-size: .9rem; line-height: 1.7; color: var(--text-secondary); }
.legal p { margin-bottom: 10px; }
.legal ul { padding-left: 20px; margin: 6px 0 12px; }
.legal li { margin-bottom: 4px; }

/* ── Responsive ─────────────────────────────── */
@media (max-width: 640px) {
  .header { padding: 12px 16px; }
  .header-logo { font-size: 1.4rem; }
  .header-sub { font-size: .6rem; }
  .theme-toggle { width: 34px; height: 34px; }
  .theme-toggle svg { width: 17px; height: 17px; }
  .container { padding: 14px 12px 20px; }
  .hero h1 { font-size: 1.5rem; }
  .hero p { font-size: .85rem; }
  .panel { padding: 18px 14px; }
  .input-wrapper { flex-direction: column; }
  .btn { padding: 14px; }
  .tab { font-size: .65rem; padding: 10px 12px; }
  .result-item { padding: 12px 14px; }
  .results-bar { padding: 10px 14px; }
  .r-thumb { width: 44px; height: 44px; }
  .meter-grid { grid-template-columns: 1fr; gap: 14px; }
  .legal { padding: 22px 18px 24px; }
  .policy-bar { gap: 12px; padding: 12px 16px; }
  .policy-bar a { font-size: .68rem; }
  .footer { font-size: .68rem; }
}

@media (max-width: 520px) {
  .result-item { flex-wrap: wrap; }
  .r-side { flex-basis: 100%; flex-direction: row; justify-content: flex-end; margin-top: -6px; }
  .link-tag { width: 52px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}