:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --border: #2a2a2a;
  --text: #f2f2f2;
  --muted: #888;
  --accent: #e8b84a;
  --accent-dim: #a07828;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", sans-serif;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

#app {
  min-height: 100%;
  padding-top: var(--safe-top);
  padding-bottom: var(--safe-bottom);
}

.header {
  padding: 1.25rem 1rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.tagline {
  margin-top: 0.25rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.sketch-list {
  list-style: none;
  padding: 0 0.75rem 0.75rem;
  display: grid;
  gap: 0.75rem;
}

.filter-bar {
  padding: 0.5rem 0.75rem 0;
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.search-input {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.filter-row {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 0.4rem;
}

.tag-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  max-height: 7rem;
  overflow-y: auto;
  margin-bottom: 0.4rem;
  touch-action: pan-y;
}

.filter-chip {
  font-size: 0.72rem;
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
}

.filter-chip.active {
  border-color: var(--accent);
  color: var(--accent);
  background: #1a1608;
}

.chip-count {
  opacity: 0.6;
  font-size: 0.65rem;
}

.filter-count {
  font-size: 0.72rem;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

.card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.card-head h2 {
  margin-bottom: 0;
  flex: 1;
}

.like-btn, .btn-like {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-width: 40px;
  min-height: 36px;
  font-size: 1rem;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity 0.15s, transform 0.1s;
}

.like-btn.liked, .btn-like.liked {
  opacity: 1;
  border-color: var(--accent);
  background: #1a1608;
  transform: scale(1.05);
}

.like-btn:active, .btn-like:active {
  transform: scale(0.95);
}

.sketch-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}

.sketch-card:active {
  transform: scale(0.98);
  border-color: var(--accent-dim);
}

.sketch-card h2 {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.sketch-card p {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.45;
}

.sketch-card .tags {
  margin-top: 0.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tag {
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: #1e1e1e;
  color: var(--accent);
  border: 1px solid var(--border);
}

.sketch-card .meta-row {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}

.player-top {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 0.75rem 0.5rem;
  border-bottom: 1px solid var(--border);
}

.player-title-wrap {
  flex: 1;
  min-width: 0;
}

.player-title {
  font-size: 1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.player-meta {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.15rem;
}

.btn-icon, .btn-nav {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  min-width: 44px;
  min-height: 44px;
  font-size: 1rem;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.btn-nav {
  flex: 0 0 auto;
}

.preview-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 16;
  max-height: 55vh;
  background: #000;
  touch-action: pan-y;
}

#sketch-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

.tap-hint {
  position: absolute;
  bottom: 0.5rem;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.35);
  pointer-events: none;
}

.player-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 0.75rem;
}

.player-counter {
  font-size: 0.9rem;
  color: var(--muted);
  min-width: 4rem;
  text-align: center;
}

.player-scroll {
  overflow-y: auto;
  max-height: 100vh;
  max-height: 100dvh;
}

.params-panel,
.feedback {
  padding: 0 0.75rem 0.75rem;
  touch-action: pan-y;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 0.85rem;
  color: var(--muted);
}

.btn-text {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.78rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
}

.bpm-block {
  margin-bottom: 0.75rem;
  padding: 0.6rem;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
}

.bpm-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  display: block;
  margin-bottom: 0.35rem;
}

.bpm-row,
.param-slider-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.param-row {
  margin-bottom: 0.55rem;
}

.param-label {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 0.2rem;
}

.param-slider {
  flex: 1;
  accent-color: var(--accent);
  touch-action: none;
}

.param-value {
  font-size: 0.75rem;
  color: var(--text);
  min-width: 2.5rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.bpm-slider {
  flex: 1;
}

.params-controls {
  margin-bottom: 0.6rem;
}

.params-panel .btn-primary {
  margin-bottom: 0.25rem;
}

.sketch-card--simple {
  border-color: #2a3a2a;
}

.btn-secondary {
  width: 100%;
  padding: 0.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.85rem;
  cursor: pointer;
}

.feedback-title {
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
  color: var(--muted);
}

.feedback-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.6rem;
}

.preset-btn {
  font-size: 0.78rem;
  padding: 0.45rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.preset-btn:active {
  border-color: var(--accent);
}

.feedback-custom textarea {
  width: 100%;
  padding: 0.6rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.85rem;
  resize: none;
  margin-bottom: 0.5rem;
}

.btn-primary {
  width: 100%;
  padding: 0.75rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #111;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
}

.player-footer {
  padding: 0 0.75rem 1rem;
  text-align: center;
}

.version-badge {
  font-size: 0.75rem;
  color: var(--muted);
}

.toast {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--accent);
  text-align: center;
}

@media (min-width: 600px) {
  .sketch-list {
    grid-template-columns: repeat(2, 1fr);
    max-width: 720px;
    margin: 0 auto;
  }

  #app {
    max-width: 480px;
    margin: 0 auto;
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
  }
}