:root {
  color-scheme: dark;
  --bg: #07070c;
  --bg-2: #0d0d16;
  --panel: #11121c;
  --panel-2: #171826;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --ink: #f5f6fb;
  --ink-dim: #b7bacb;
  --ink-mute: #7b7f96;
  --accent: #8b7bff;
  --accent-2: #5eead4;
  --warn: #f59e0b;
  --err: #f97170;
  --ok: #34d399;
  --radius: 18px;
  --radius-sm: 10px;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  min-height: 100vh;
  background:
    radial-gradient(1100px 600px at 80% -10%, rgba(139,123,255,0.18), transparent 60%),
    radial-gradient(900px 500px at 0% 40%, rgba(94,234,212,0.08), transparent 60%),
    var(--bg);
  color: var(--ink);
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'cv11', 'ss01';
}

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
}

.mono { font-family: var(--mono); font-size: 0.92em; }

/* nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(7, 7, 12, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}
.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 28px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand-dot {
  width: 11px; height: 11px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 3px rgba(139,123,255,0.18);
}
.brand-name { font-size: 0.98rem; }
.nav-links {
  display: flex;
  gap: 22px;
  flex: 1;
  justify-content: center;
}
.nav-links a {
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
}
.nav-links a:hover { color: var(--ink); }
.nav-cta { display: flex; gap: 10px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}
.btn:hover { background: rgba(255,255,255,0.04); }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #6d5ff5);
  border-color: transparent;
  color: white;
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(139,123,255,0.28);
}
.btn-primary:hover { filter: brightness(1.08); background: linear-gradient(135deg, var(--accent), #6d5ff5); }
.btn-ghost { background: rgba(255,255,255,0.04); }
.btn[disabled] { opacity: 0.5; pointer-events: none; }

/* hero */
.hero {
  padding: 72px 0 56px;
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.9fr);
  gap: 56px;
  align-items: center;
}
.eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-2);
  margin-bottom: 18px;
}
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(2.2rem, 4.6vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.grad {
  background: linear-gradient(135deg, #8b7bff, #5eead4);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lede {
  margin: 0 0 24px;
  color: var(--ink-dim);
  font-size: 1.08rem;
  line-height: 1.6;
  max-width: 620px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  font-size: 0.85rem;
}
.chip-k { color: var(--ink-mute); }
.chip-v { color: var(--ink); font-weight: 500; }

.hero-card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 40px 80px rgba(0,0,0,0.3);
}
.hc-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
}
.hc-head .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 3px rgba(52,211,153,0.18);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hc-grid { margin: 14px 0 0; padding: 0; display: grid; gap: 10px; }
.hc-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.9rem;
}
.hc-row dt { color: var(--ink-mute); }
.hc-row dd { margin: 0; color: var(--ink); font-weight: 500; }

/* section heads */
.section-head {
  margin-bottom: 32px;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 32px;
  flex-wrap: wrap;
}
.section-head h2 {
  margin: 0;
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  letter-spacing: -0.01em;
}
.section-head p {
  margin: 0;
  color: var(--ink-dim);
  max-width: 540px;
  line-height: 1.55;
}

/* tools */
.tools { padding: 40px 0 48px; }
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 22px;
}
.tool-card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.tc-head {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.tc-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(139,123,255,0.2), rgba(94,234,212,0.15));
  display: grid; place-items: center;
  color: var(--accent-2);
  flex-shrink: 0;
}
.tc-icon svg { width: 22px; height: 22px; }
.tc-head h3 { margin: 0 0 4px; font-size: 1.15rem; letter-spacing: -0.01em; }
.tc-head p { margin: 0; color: var(--ink-dim); font-size: 0.92rem; line-height: 1.5; }

.dropzone {
  border: 2px dashed var(--line-strong);
  border-radius: 14px;
  padding: 36px 20px;
  text-align: center;
  background: var(--bg-2);
  color: var(--ink-dim);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
}
.dropzone:hover { border-color: var(--accent); background: rgba(139,123,255,0.04); }
.dropzone.is-drag { border-color: var(--accent-2); background: rgba(94,234,212,0.06); }
.dropzone.is-disabled { opacity: 0.5; pointer-events: none; }
.dz-copy strong {
  display: block;
  color: var(--ink);
  font-weight: 600;
  font-size: 1.02rem;
  margin-bottom: 4px;
}
.dz-copy span {
  font-size: 0.85rem;
  color: var(--ink-mute);
}

.tool-status {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px;
  border-radius: 12px;
  background: var(--bg-2);
  border: 1px solid var(--line);
}
.status-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  font-size: 0.9rem;
}
.status-label { color: var(--ink-mute); }
.status-value { color: var(--ink); font-weight: 500; }
.status-value.err { color: var(--err); font-family: var(--mono); font-size: 0.82rem; max-width: 420px; overflow-wrap: anywhere; }
.progress {
  height: 8px;
  background: rgba(255,255,255,0.06);
  border-radius: 999px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.25s ease;
}
.status-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding-top: 4px;
}

/* how it works */
.how { padding: 48px 0; }
.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}
.steps li {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 22px;
}
.step-num {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.12em;
}
.steps h4 { margin: 6px 0 6px; font-size: 1.05rem; }
.steps p { margin: 0; color: var(--ink-dim); font-size: 0.92rem; line-height: 1.55; }

/* faq */
.faq { padding: 48px 0 96px; }
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 18px;
}
.faq-item {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 22px;
}
.faq-item h4 { margin: 0 0 8px; font-size: 1rem; }
.faq-item p { margin: 0; color: var(--ink-dim); font-size: 0.92rem; line-height: 1.55; }

/* footer */
.footer {
  border-top: 1px solid var(--line);
  background: var(--bg-2);
  padding: 28px 0;
  color: var(--ink-mute);
  font-size: 0.87rem;
}
.foot-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
}
.foot-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink-dim); }
.foot-meta a { color: var(--accent-2); text-decoration: none; }
.foot-meta a:hover { text-decoration: underline; }

/* banner */
.banner {
  position: fixed;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 22px;
  border-radius: 999px;
  background: rgba(139, 123, 255, 0.15);
  border: 1px solid rgba(139, 123, 255, 0.4);
  color: var(--ink);
  font-size: 0.9rem;
  backdrop-filter: blur(12px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  z-index: 50;
}

@media (max-width: 880px) {
  .hero { padding: 48px 0 36px; }
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .nav-links { display: none; }
}

/* YouTube tool card */
.yt-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 0 4px;
}
.yt-label {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8f96b0;
}
.yt-inputrow {
  display: flex;
  gap: 10px;
  align-items: stretch;
  flex-wrap: wrap;
}
.yt-inputrow input[type="url"] {
  flex: 1 1 260px;
  min-width: 0;
  padding: 12px 14px;
  background: var(--bg-2);
  color: #e8eaf5;
  border: 1px dashed #2a2c44;
  border-radius: 10px;
  font: 14px/1.4 ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, monospace;
  outline: none;
  transition: border-color .15s ease, background .15s ease;
}
.yt-inputrow input[type="url"]::placeholder { color: #4b5170; }
.yt-inputrow input[type="url"]:focus {
  border-color: var(--accent);
  background: rgba(139,123,255,0.04);
}
.yt-inputrow .btn-primary {
  flex: 0 0 auto;
  padding-left: 18px;
  padding-right: 18px;
}
.yt-inputrow .btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  filter: none;
}
.yt-hint {
  margin: 4px 0 0;
  font-size: 12px;
  color: #7d849c;
  line-height: 1.5;
}