:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #eef4ff;
  color: #0f172a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.18), transparent 32rem),
    radial-gradient(circle at bottom right, rgba(14, 165, 233, 0.16), transparent 34rem),
    linear-gradient(180deg, #f8fbff 0%, #eaf1ff 100%);
}

button,
a {
  font: inherit;
}

.app-shell {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 3rem;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 0.8rem 1rem;
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: #0f172a;
  font-weight: 900;
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border-radius: 0.75rem;
  background: linear-gradient(135deg, #1d4ed8, #0891b2);
  color: #eff6ff;
  box-shadow: 0 10px 28px rgba(37, 99, 235, 0.34);
}

.brand-logo {
  width: 1.35rem;
  height: 1.35rem;
  display: block;
}

.brand-logo-path {
  fill: currentColor;
}

.topbar-status {
  color: #475569;
  font-size: 0.92rem;
  font-weight: 700;
}

.hero {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.eyebrow,
.control-kicker {
  margin: 0;
  color: #2563eb;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 920px;
  margin: 0 auto;
  font-size: clamp(2.45rem, 7vw, 5.8rem);
  letter-spacing: -0.06em;
  line-height: 0.92;
}

.lede {
  max-width: 760px;
  margin: 0 auto;
  color: #475569;
  font-size: clamp(1rem, 2vw, 1.22rem);
}

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
  text-align: left;
}

.workflow-steps li,
.feature-grid article,
.recorder,
.setup-card,
.playback-card {
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.12);
  backdrop-filter: blur(16px);
}

.workflow-steps li {
  display: grid;
  gap: 0.35rem;
  padding: 1rem;
}

.workflow-steps strong {
  color: #0f172a;
}

.workflow-steps span,
.feature-grid p,
.control-help,
.privacy-note {
  color: #64748b;
}

.recorder {
  padding: clamp(1rem, 3vw, 1.5rem);
}

.recording-stage {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 24px;
  background: #020617;
  aspect-ratio: 16 / 9;
  touch-action: none;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

#previewCanvas,
#playback {
  display: block;
  width: 100%;
  background: #020617;
}

#previewCanvas {
  height: 100%;
}

.webcam-overlay {
  --camera-zoom: 1;
  position: absolute;
  left: 4%;
  bottom: 5%;
  width: 22%;
  min-width: 130px;
  max-width: 55%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 3px solid rgba(255, 255, 255, 0.92);
  border-radius: 18px;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.38);
  cursor: grab;
  user-select: none;
}

.webcam-overlay.dragging {
  cursor: grabbing;
}

.webcam-overlay.hidden-camera video {
  display: none;
}

.webcam-overlay video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(var(--camera-zoom));
  transform-origin: center center;
}

.camera-off {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #cbd5e1;
  font-weight: 800;
}

.webcam-overlay:not(.hidden-camera) .camera-off {
  display: none;
}

.resize-handle {
  position: absolute;
  right: 0.35rem;
  bottom: 0.35rem;
  width: 1.05rem;
  height: 1.05rem;
  border-right: 3px solid #fff;
  border-bottom: 3px solid #fff;
  cursor: nwse-resize;
}

.setup-card,
.control-card {
  display: grid;
  grid-template-columns: minmax(220px, 0.8fr) 1.6fr;
  gap: 1rem;
  align-items: center;
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.24);
  border-radius: 24px;
  background: #f8fafc;
}

.setup-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
}

.setup-grid label {
  display: grid;
  gap: 0.35rem;
  color: #475569;
  font-size: 0.82rem;
  font-weight: 850;
}

.setup-grid select {
  width: 100%;
  min-height: 2.75rem;
  border: 1px solid rgba(148, 163, 184, 0.6);
  border-radius: 14px;
  background: #fff;
  color: #0f172a;
  font: inherit;
  font-weight: 750;
  padding: 0.55rem 0.75rem;
}

.setup-grid select:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.28);
  outline-offset: 2px;
}

.camera-device-actions {
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.camera-device-actions .control-help {
  margin: 0;
}

.control-help {
  margin: 0.35rem 0 0;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.75rem;
}

button,
.download-link {
  border: 0;
  border-radius: 999px;
  padding: 0.85rem 1rem;
  color: #fff;
  font-weight: 850;
  text-decoration: none;
  transition: transform 160ms ease, opacity 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.primary-action {
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  box-shadow: 0 14px 32px rgba(37, 99, 235, 0.28);
}

.secondary-action {
  background: #334155;
}

.danger-action {
  background: #dc2626;
}

button:hover:not(:disabled),
.download-link:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.18);
}

button:focus-visible,
.download-link:focus-visible,
.brand:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.36);
  outline-offset: 3px;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
  box-shadow: none;
}

.status {
  min-height: 1.5rem;
  margin: 1rem 0 0;
  color: #475569;
  font-weight: 700;
}

.status.error {
  color: #b91c1c;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.25rem;
}

.feature-grid article {
  padding: 1.2rem;
}

.feature-grid h2,
.playback-card h2 {
  margin-bottom: 0.4rem;
}

.playback-card {
  display: grid;
  gap: 1rem;
  margin-top: 1.25rem;
  padding: clamp(1rem, 3vw, 1.5rem);
}

#playback {
  border-radius: 18px;
  max-height: 55vh;
}

.download-link {
  justify-self: start;
}

.privacy-note {
  margin-bottom: 0;
  font-size: 0.94rem;
}

[hidden] {
  display: none !important;
}

@media (max-width: 760px) {
  .app-shell {
    width: min(100% - 1rem, 1180px);
    padding: 1rem 0;
  }

  .topbar,
  .setup-card,
  .control-card {
    align-items: stretch;
    border-radius: 22px;
  }

  .topbar,
  .setup-card,
  .control-card,
  .setup-grid,
  .workflow-steps,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    display: grid;
  }

  .camera-device-actions {
    grid-column: 1;
    display: grid;
  }

  .controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    justify-content: stretch;
  }

  button,
  .download-link {
    width: 100%;
  }

  .webcam-overlay {
    width: 34%;
    min-width: 96px;
    border-radius: 12px;
  }
}