:root {
  --bg0: #0f1419;
  --bg1: #1a2332;
  --ink: #e8eef6;
  --muted: #8b9bb0;
  --line: rgba(232, 238, 246, 0.12);
  --accent: #3d9bfd;
  --accent-ink: #041018;
  --danger: #e85d5d;
  --ok: #5dca8a;
  --font: "Segoe UI", "Helvetica Neue", sans-serif;
  --display: "Trebuchet MS", "Segoe UI", sans-serif;
}

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

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #243552 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #1c2a22 0%, transparent 50%),
    linear-gradient(160deg, var(--bg0), var(--bg1));
  line-height: 1.45;
}

.app {
  width: min(960px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.5rem 0 3rem;
  display: grid;
  gap: 1.5rem;
}

.hero {
  display: grid;
  gap: 0.4rem;
}

.brand {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.hero h1 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--muted);
}

.lede {
  margin: 0.35rem 0 0;
  max-width: 42rem;
  color: var(--muted);
}

.panel {
  display: grid;
  gap: 1rem;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--line);
  background: rgba(15, 20, 25, 0.45);
  backdrop-filter: blur(8px);
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field > span {
  font-size: 0.85rem;
  color: var(--muted);
}

.row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

input[type="url"] {
  flex: 1 1 220px;
  min-width: 0;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.35);
  color: var(--ink);
  font: inherit;
  outline: none;
}

input[type="url"]:focus {
  border-color: var(--accent);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 0.92rem;
  padding: 0.65rem 0.95rem;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}

.btn:hover:not(:disabled) {
  border-color: rgba(232, 238, 246, 0.35);
  background: rgba(255, 255, 255, 0.04);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
}

.btn.primary:hover:not(:disabled) {
  filter: brightness(1.06);
}

.btn.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #1a0505;
  font-weight: 600;
}

.btn.danger.recording {
  animation: pulse 1.2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    filter: brightness(1);
  }
  50% {
    filter: brightness(1.15);
  }
}

.status {
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.status.recording {
  color: var(--danger);
}

.status.ready {
  color: var(--ok);
}

.meta {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.stage {
  display: grid;
  gap: 0.75rem;
}

.preview-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #05080c;
  border: 1px solid var(--line);
  overflow: hidden;
  cursor: crosshair;
  user-select: none;
  touch-action: none;
}

.preview-wrap.empty {
  cursor: default;
}

.preview-wrap.empty #preview,
.preview-wrap.empty #overlay {
  opacity: 0;
  pointer-events: none;
}

#preview,
#overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#preview {
  object-fit: contain;
  background: #000;
  pointer-events: none;
}

#overlay {
  pointer-events: none;
}

.preview-hint {
  position: absolute;
  inset: 0;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
  pointer-events: none;
}

.preview-wrap:not(.empty) .preview-hint {
  display: none;
}

.crop-canvas {
  display: none;
}

.notes {
  padding: 0 0.15rem;
}

.notes h2 {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.notes ul {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.notes li + li {
  margin-top: 0.35rem;
}

@media (max-width: 560px) {
  .app {
    width: calc(100% - 1.25rem);
    padding-top: 1.5rem;
  }

  .btn {
    flex: 1 1 auto;
  }
}