:root {
  --bg: #0f141b;
  --bg-alt: #121c24;
  --card: #1a2631;
  --card-muted: #203140;
  --icon-bg: #eef2f6;
  --ink: #f6f1e7;
  --ink-dim: #b8c3cf;
  --accent: #ffb44a;
  --accent-2: #65d6ad;
  --accent-3: #f6707a;
  --stroke: #2a3a49;
  --shadow: 0 20px 60px rgba(6, 9, 12, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(1200px 800px at 15% -10%, rgba(255, 180, 74, 0.18), transparent 55%),
    radial-gradient(900px 700px at 85% 0%, rgba(101, 214, 173, 0.16), transparent 50%),
    linear-gradient(135deg, #0c1117, #0f141b 40%, #101824 100%);
  min-height: 100vh;
}

main {
  padding: 40px 24px 64px;
}

a {
  color: inherit;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 0;
}

.nav-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid transparent;
  transition: border 0.2s ease, transform 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(140deg, var(--accent), var(--accent-3));
  color: #161616;
  font-weight: 800;
}

.hero {
  margin: 48px auto 32px;
  max-width: 980px;
}

.hero h1 {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  margin: 0 0 12px;
}

.hero p {
  font-size: 1.1rem;
  color: var(--ink-dim);
  max-width: 680px;
}

.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: 24px;
}

.card {
  background: linear-gradient(160deg, var(--card), var(--card-muted));
  border-radius: 20px;
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--stroke);
}

.tool-icon {
  width: 64px;
  height: 64px;
  margin: 16px 0 12px;
  display: block;
  padding: 8px;
  border-radius: 16px;
  background: var(--icon-bg);
  object-fit: contain;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 8px;
}

.tag {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--ink-dim);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.section {
  margin: 32px auto 0;
  max-width: 980px;
}

.panel {
  display: grid;
  gap: 18px;
  padding: 24px;
  border-radius: 20px;
  border: 1px solid var(--stroke);
  background: rgba(19, 27, 36, 0.9);
  box-shadow: var(--shadow);
}

.step-header {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-number {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--accent);
  color: #161616;
  font-weight: 800;
  display: grid;
  place-items: center;
}

.step-title {
  margin: 0;
  font-size: 1.4rem;
}

.step.is-disabled {
  opacity: 0.6;
}

.step.is-disabled .step-body {
  pointer-events: none;
}

.step.is-collapsed .step-body {
  display: none;
}

.file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.drop-zone {
  margin-top: 10px;
  border: 1px dashed var(--stroke);
  border-radius: 18px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.03);
  display: grid;
  gap: 4px;
  text-align: center;
  cursor: pointer;
  transition: border 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.drop-zone.is-dragover {
  border-color: var(--accent-2);
  background: rgba(101, 214, 173, 0.12);
  transform: translateY(-1px);
}

.drop-zone.has-file {
  border-color: var(--accent);
  background: rgba(255, 180, 74, 0.12);
}

.drop-title {
  font-weight: 700;
}

.drop-subtitle {
  color: var(--ink-dim);
  font-size: 0.9rem;
}

.demo-details {
  border: 1px solid var(--stroke);
  border-radius: 16px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
}

.demo-details summary {
  cursor: pointer;
  font-weight: 600;
}

.recommendation-title {
  margin: 8px 0;
  font-size: 1.1rem;
}

.why {
  color: var(--accent);
  font-weight: 600;
}

.command-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.copy-button {
  padding: 8px 14px;
  font-size: 0.85rem;
}

.trust {
  margin-top: 4px;
}

.upload-row {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(220px, 1fr) auto;
  align-items: center;
}

.upload-primary {
  background: transparent;
  color: var(--ink);
  border-color: var(--stroke);
}

.upload-secondary {
  white-space: nowrap;
  color: var(--ink-dim);
}

.upload-row.has-file .upload-primary {
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
  color: #161616;
  border-color: transparent;
}

.selected-label {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--ink-dim);
}

.selected-preview {
  margin-top: 8px;
  max-width: 520px;
}

.selected-placeholder {
  padding: 18px;
  border-radius: 16px;
  border: 1px dashed var(--stroke);
  color: var(--ink-dim);
  text-align: center;
}

.meta-card {
  margin-top: 12px;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--stroke);
}

.meta-list {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--ink-dim);
  font-size: 0.9rem;
}

.meta-list strong {
  color: var(--ink);
  font-weight: 600;
}

.is-hidden {
  display: none !important;
}

.choice-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.choice-card {
  border-radius: 18px;
  padding: 16px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.02);
}

.choice-card.muted {
  opacity: 0.85;
}

.input-streams {
  padding: 8px 0 4px;
}

.inline-note {
  display: grid;
  gap: 6px;
  padding: 10px 0 0;
}

.panel h2 {
  margin: 0 0 8px;
  font-size: 1.5rem;
}

.input-group {
  display: grid;
  gap: 12px;
}

.range-dual {
  display: grid;
  gap: 10px;
}

.range-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.range-value {
  font-size: 0.9rem;
  color: var(--ink-dim);
}

.range-track {
  position: relative;
  height: 36px;
  display: flex;
  align-items: center;
}

.range-track::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 6px;
  border-radius: 999px;
  background: #1b2633;
}

.range-fill {
  position: absolute;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
}

.range-track input[type="range"] {
  position: absolute;
  left: 0;
  right: 0;
  height: 36px;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  pointer-events: auto;
  -webkit-appearance: none;
  appearance: none;
}

.range-track input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  background: transparent;
}

.range-track input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #f5f5f5;
  border: 2px solid #0f1821;
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  position: relative;
  z-index: 2;
}

.range-track input[type="range"]::-moz-range-track {
  height: 6px;
  background: transparent;
}

.range-track input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #f5f5f5;
  border: 2px solid #0f1821;
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  position: relative;
  z-index: 2;
}

label {
  font-weight: 600;
  color: var(--ink);
}

input[type="file"],
input[type="text"],
input[type="number"],
input[type="range"],
textarea,
select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--stroke);
  background: #0f1821;
  color: var(--ink);
  font-size: 1rem;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.helper {
  font-size: 0.9rem;
  color: var(--ink-dim);
}

.badge {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 180, 74, 0.18);
  color: var(--accent);
  font-size: 0.8rem;
}

.badge.warn {
  background: rgba(255, 120, 120, 0.2);
  color: #ff8c8c;
}

.button-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.icon-button {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: transparent;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.icon-button:hover {
  border-color: var(--accent);
}

button,
.button {
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
  color: #161616;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button.secondary,
.button.secondary {
  background: transparent;
  border-color: var(--stroke);
  color: var(--ink);
}

button:hover,
.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 20px rgba(15, 20, 26, 0.35);
}

button:disabled,
.button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
  box-shadow: none;
}

.code-block {
  background: #0c1218;
  border-radius: 16px;
  padding: 16px;
  font-family: "JetBrains Mono", "Courier New", monospace;
  font-size: 0.9rem;
  color: #f3e9d9;
  border: 1px dashed rgba(255, 255, 255, 0.16);
  overflow-x: auto;
}

.table-wrap {
  overflow-x: auto;
}

.compat-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  color: var(--ink);
}

.compat-table th,
.compat-table td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
  white-space: nowrap;
}

.compat-table th {
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.split {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.notice {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(101, 214, 173, 0.12);
  border: 1px solid rgba(101, 214, 173, 0.4);
  color: #d9f8ec;
  font-size: 0.95rem;
}

.notice::before {
  content: \"OK\";
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.notice.warn {
  background: rgba(255, 180, 74, 0.14);
  border-color: rgba(255, 180, 74, 0.4);
  color: #ffe7c4;
}

.notice.warn::before {
  content: \"NOTE\";
}

.notice.block {
  background: rgba(246, 112, 122, 0.16);
  border-color: rgba(246, 112, 122, 0.45);
  color: #ffe1e4;
}

.notice.block::before {
  content: \"STOP\";
}

.text-link {
  padding: 0;
  border: none;
  background: transparent;
  color: var(--ink-dim);
  font-weight: 600;
  cursor: pointer;
}

.text-link:hover {
  color: var(--accent);
}

.streams-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.trim-range .range-track::before {
  height: 6px;
}

.trim-range .range-fill {
  height: 6px;
}

.trim-range input[type=\"range\"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #0f141b;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.trim-range input[type=\"range\"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #0f141b;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.trim-range:hover input[type=\"range\"]::-webkit-slider-thumb,
.trim-range:hover input[type=\"range\"]::-moz-range-thumb,
.trim-range input[type=\"range\"]:active::-webkit-slider-thumb,
.trim-range input[type=\"range\"]:active::-moz-range-thumb {
  opacity: 1;
}

.range-fill {
  cursor: grab;
}

.range-fill:active {
  cursor: grabbing;
}

.range-tooltip {
  position: absolute;
  top: -34px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 10px;
  border-radius: 999px;
  background: #0c1218;
  border: 1px solid var(--stroke);
  font-size: 0.75rem;
  color: var(--ink);
  white-space: nowrap;
  pointer-events: none;
}

.inline-feedback {
  margin-top: 10px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--ink-dim);
  font-size: 0.9rem;
  cursor: pointer;
  text-align: left;
}

.inline-feedback:hover {
  color: var(--ink);
}

.precision-editor {
  margin-top: 12px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.02);
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.toggle-row {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 10px 0 16px;
  color: var(--ink-dim);
  font-size: 0.9rem;
}

.time-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  align-items: end;
}

.duration-box {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.02);
}

.duration-value {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ink);
}

.quick-actions {
  margin-top: 10px;
}

.preview {
  min-height: 140px;
  border-radius: 18px;
  background: repeating-linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.04),
    rgba(255, 255, 255, 0.04) 12px,
    rgba(255, 255, 255, 0.08) 12px,
    rgba(255, 255, 255, 0.08) 24px
  );
  display: grid;
  place-items: center;
  color: var(--ink-dim);
}

.preview.has-media {
  background: transparent;
  display: block;
}

.step-body {
  min-width: 0;
}

.preview.has-media img {
  max-width: 100%;
  width: auto;
  height: auto;
  display: block;
  margin: 0 auto;
}

.sample-video {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--stroke);
  background: #0c1218;
}

.sample-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.footer {
  margin-top: 40px;
  text-align: center;
  color: var(--ink-dim);
  font-size: 0.85rem;
}

@media (max-width: 680px) {
  nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .upload-row {
    grid-template-columns: 1fr;
  }

  .button-row {
    flex-direction: column;
  }
}