:root {
  color-scheme: dark;
  --bg: #080b12;
  --panel: rgba(17, 24, 39, 0.82);
  --panel-strong: rgba(17, 24, 39, 0.96);
  --text: #f8fafc;
  --muted: #a8b3c7;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #facc15;
  --accent-2: #ec4899;
  --danger: #fb7185;
  --radius: 24px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 10%, rgba(250, 204, 21, 0.22), transparent 30%),
    radial-gradient(circle at 90% 0%, rgba(236, 72, 153, 0.24), transparent 32%),
    linear-gradient(145deg, #070a10 0%, #101827 48%, #030712 100%);
}

button,
input {
  font: inherit;
}

.app-shell {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.hero {
  padding: 22px 4px 18px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 11ch;
  margin-bottom: 14px;
  font-size: clamp(2.55rem, 13vw, 5rem);
  line-height: 0.86;
  letter-spacing: -0.08em;
}

h2 {
  margin-bottom: 6px;
  font-size: 1.05rem;
}

.intro,
.section-heading p,
.smallprint,
.tips li {
  color: var(--muted);
  line-height: 1.45;
}

.intro {
  max-width: 36rem;
  margin-bottom: 0;
  font-size: 1.02rem;
}

.camera-card,
.panel,
.tips {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(18px);
}

.camera-card {
  overflow: hidden;
}

.stage {
  position: relative;
  min-height: 430px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(250, 204, 21, 0.12), transparent),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.05) 0 1px, transparent 1px 24px),
    #020617;
}

video,
canvas {
  display: block;
  width: 100%;
}

#camera {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  pointer-events: none;
}

#preview {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.empty-state {
  position: absolute;
  inset: 18px;
  display: grid;
  place-content: center;
  gap: 8px;
  border: 1px dashed rgba(255, 255, 255, 0.28);
  border-radius: 20px;
  color: var(--muted);
  text-align: center;
}

.empty-state strong {
  color: var(--text);
  font-size: 1.2rem;
}

.empty-state.is-hidden {
  display: none;
}

.primary-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 14px;
}

.button {
  min-height: 52px;
  border: 0;
  border-radius: 16px;
  cursor: pointer;
  font-weight: 850;
  transition: transform 160ms ease, opacity 160ms ease, background 160ms ease;
}

.button:active:not(:disabled) {
  transform: scale(0.98);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.46;
}

.button-primary {
  color: #111827;
  background: linear-gradient(135deg, var(--accent), #fb923c);
}

.button-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.1);
}

.notice {
  padding: 0 16px 16px;
  color: var(--muted);
  font-size: 0.92rem;
}

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

.panel,
.tips {
  padding: 16px;
}

.section-heading {
  margin-bottom: 14px;
}

.effects {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.effect-button {
  min-height: 88px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 18px;
  color: var(--text);
  background: var(--panel-strong);
  text-align: left;
}

.effect-button[aria-pressed="true"] {
  border-color: rgba(250, 204, 21, 0.9);
  box-shadow: 0 0 0 2px rgba(250, 204, 21, 0.2) inset;
}

.effect-swatch {
  display: block;
  width: 100%;
  height: 24px;
  margin-bottom: 10px;
  border-radius: 999px;
}

.effect-name {
  display: block;
  font-weight: 850;
}

.effect-desc {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.25;
}

.slider-row {
  display: grid;
  gap: 10px;
  margin-top: 14px;
  color: var(--muted);
  font-weight: 750;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

#result {
  min-height: 260px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #020617;
}

.result-panel .primary-actions {
  padding-inline: 0;
}

.ai-box {
  margin-top: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.055);
}

.compact-heading {
  margin-bottom: 10px;
}

.ai-presets .effect-button {
  min-height: 104px;
}

.check-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.35;
}

.check-row input {
  width: 18px;
  height: 18px;
  margin-top: 1px;
  accent-color: var(--accent);
}

.smallprint {
  margin-bottom: 0;
  font-size: 0.88rem;
}

.tips ul {
  margin: 0;
  padding-left: 18px;
}

.tips li + li {
  margin-top: 8px;
}

@media (min-width: 680px) {
  .primary-actions {
    grid-template-columns: repeat(3, 1fr);
  }

  .result-panel .primary-actions {
    grid-template-columns: repeat(2, 1fr);
  }

  .effects {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}