:root {
  --bg-deep: #07090c;
  --bg-panel: #0e1217;
  --bg-panel-2: #151b22;
  --lcd-bg: #05080b;
  --lcd-fg: #3FE7FF;
  --lcd-fg-dim: #1c4a55;
  --accent: #3FE7FF;
  --accent-2: #ff9f43;
  --text-main: #dde6ec;
  --text-mute: #5e6e7a;
  --border: #232b34;
  --font-display: 'DejaVu Sans Mono', 'Courier New', monospace;
  --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font-body);
  -webkit-tap-highlight-color: transparent;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 16px;
}

.app {
  width: 100%;
  max-width: 420px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

/* Title bar */
.titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: linear-gradient(180deg, #161d25, #0c0f13);
  border-bottom: 1px solid var(--border);
}

.titlebar .logo {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 2px;
  font-size: 13px;
  color: var(--accent);
  text-shadow: 0 0 8px rgba(63,231,255,0.4);
}

.titlebar .dots span {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-mute);
  margin-left: 5px;
  opacity: 0.5;
}

/* LCD display */
.lcd {
  margin: 14px;
  background: var(--lcd-bg);
  border: 1px solid #16242c;
  border-radius: 8px;
  padding: 12px 14px;
  font-family: var(--font-display);
  box-shadow: inset 0 2px 10px rgba(0,0,0,0.6);
}

.lcd .track-name {
  color: var(--accent);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-shadow: 0 0 6px rgba(63,231,255,0.5);
  margin-bottom: 6px;
}

.lcd .track-name.empty { color: var(--lcd-fg-dim); }

.lcd .meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--lcd-fg-dim);
  margin-bottom: 8px;
}

.lcd .meta-row .time {
  color: var(--accent);
}

/* Progress bar */
.progress-wrap {
  position: relative;
  height: 6px;
  background: #0c1418;
  border-radius: 3px;
  overflow: hidden;
  cursor: pointer;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #1a5c66, var(--accent));
  transition: width 0.1s linear;
}

/* Visualizer */
.visualizer {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 28px;
  margin-top: 10px;
}

.visualizer .bar {
  flex: 1;
  background: var(--lcd-fg-dim);
  border-radius: 1px;
  height: 10%;
  transition: height 0.12s ease, background 0.2s ease;
}

.visualizer .bar.active {
  background: var(--accent);
}

/* Controls */
.controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 6px 14px 14px;
}

.ctrl-btn {
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  color: var(--text-main);
  border-radius: 8px;
  width: 44px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
  font-size: 0;
}

.ctrl-btn:active { transform: scale(0.94); }
.ctrl-btn:hover { background: #243228; }

.ctrl-btn.play {
  width: 56px;
  height: 48px;
  background: var(--accent);
  border-color: var(--accent);
}

.ctrl-btn.play svg path,
.ctrl-btn.play svg polygon,
.ctrl-btn.play svg rect { fill: #0d1410; }

.ctrl-btn svg { width: 18px; height: 18px; }
.ctrl-btn.play svg { width: 20px; height: 20px; }

.ctrl-btn.toggle.on {
  background: var(--accent-2);
  border-color: var(--accent-2);
}
.ctrl-btn.toggle.on svg path,
.ctrl-btn.toggle.on svg circle { fill: #0d1410; }

/* Volume */
.volume-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 18px 14px;
  color: var(--text-mute);
}

.volume-row input[type=range] {
  flex: 1;
  -webkit-appearance: none;
  height: 4px;
  background: var(--bg-panel-2);
  border-radius: 2px;
  outline: none;
}

.volume-row input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

.volume-row input[type=range]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  cursor: pointer;
}

/* Extras: Crossfade + Sleep Timer */
.extras-row {
  display: flex;
  gap: 8px;
  padding: 0 18px 14px;
}

.extra-control {
  position: relative;
  flex: 1;
}

.extra-btn {
  width: 100%;
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  color: var(--text-mute);
  border-radius: 7px;
  padding: 8px 10px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.extra-btn svg { width: 14px; height: 14px; flex-shrink: 0; }
.extra-btn:hover { background: #1a222b; color: var(--text-main); }

.extra-btn.on {
  border-color: var(--accent);
  color: var(--accent);
}

.extra-menu {
  display: none;
  flex-direction: column;
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(100% + 6px);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  z-index: 10;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.extra-menu.open { display: flex; }

.extra-menu button {
  background: none;
  border: none;
  color: var(--text-main);
  padding: 9px 12px;
  text-align: left;
  font-size: 12px;
  cursor: pointer;
}

.extra-menu button:hover { background: rgba(63,231,255,0.08); color: var(--accent); }
.extra-menu button + button { border-top: 1px solid var(--border); }

.eq-menu {
  padding: 14px 10px 10px;
  align-items: stretch;
}

.eq-bands {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  height: 100px;
}

.eq-band {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex: 1;
}

.eq-band input[type="range"] {
  writing-mode: vertical-lr;
  direction: rtl;
  appearance: slider-vertical;
  -webkit-appearance: slider-vertical;
  width: 4px;
  height: 80px;
  accent-color: var(--accent);
  background: transparent;
  cursor: pointer;
}

.eq-band span {
  font-size: 10px;
  color: var(--text-mute);
  font-family: var(--font-display);
}

.eq-reset-btn {
  margin-top: 10px;
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  color: var(--text-mute);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 11px;
  cursor: pointer;
  align-self: center;
}

.eq-reset-btn:hover { color: var(--text-main); border-color: var(--accent); }

.hidden { display: none !important; }

/* Main tabs (Player / Descobrir) */
.main-tabs {
  display: flex;
  gap: 4px;
  padding: 12px 18px 0;
}

.main-tab {
  flex: 1;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-mute);
  padding: 8px 0;
  border-radius: 7px 7px 0 0;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  border-bottom: none;
}

.main-tab.active {
  color: var(--accent);
  background: var(--bg-panel-2);
  border-color: var(--border);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Premium banner */
.premium-banner {
  margin: 14px 18px 0;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 12px;
  border: 1px solid var(--border);
  background: var(--bg-panel-2);
  color: var(--text-mute);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.premium-banner.trial { border-color: var(--accent); color: var(--accent); }
.premium-banner.active { border-color: #2ecc71; color: #2ecc71; }
.premium-banner.expired { border-color: var(--accent-2); color: var(--accent-2); }

.premium-banner button {
  background: var(--accent);
  border: none;
  color: #05161a;
  font-weight: 700;
  font-size: 11px;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  white-space: nowrap;
}

/* Discover: locked state */
.discover-locked {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: 40px 24px;
  color: var(--text-mute);
}
.discover-locked svg { color: var(--accent); }
.discover-locked p { font-size: 13px; line-height: 1.5; max-width: 320px; }

/* Discover: genre grid */
.genre-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  padding: 16px 18px;
}

.genre-card {
  aspect-ratio: 1.4;
  border-radius: 10px;
  border: 1px solid var(--border);
  display: flex;
  align-items: flex-end;
  padding: 10px;
  font-weight: 700;
  font-size: 13px;
  color: #fff;
  cursor: pointer;
  text-shadow: 0 1px 4px rgba(0,0,0,0.6);
  background: linear-gradient(135deg, var(--genre-a, #3FE7FF), var(--genre-b, #1a5c66));
}

.genre-results { padding: 8px 18px 16px; }
.genre-results h3 { font-size: 14px; margin: 8px 0 10px; }

.back-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  padding: 4px 0;
}

/* Auth modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal {
  position: relative;
  width: 100%;
  max-width: 340px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.modal-close {
  position: absolute;
  top: 10px;
  right: 12px;
  background: none;
  border: none;
  color: var(--text-mute);
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
}

.modal-tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.modal-tab {
  flex: 1;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-mute);
  padding: 8px 0;
  border-radius: 7px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}
.modal-tab.active { color: var(--accent); border-color: var(--accent); }

.auth-form { display: flex; flex-direction: column; gap: 10px; }
.auth-form input {
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  color: var(--text-main);
  border-radius: 7px;
  padding: 10px 12px;
  font-size: 13px;
}
.auth-form input:focus { outline: none; border-color: var(--accent); }
.auth-note { font-size: 10px; color: var(--text-mute); line-height: 1.4; }
.auth-error { font-size: 11px; color: var(--accent-2); min-height: 14px; }

/* Playlist */
.playlist-section {
  border-top: 1px solid var(--border);
  background: var(--bg-panel-2);
}

.playlist-header {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px 14px 8px;
}

.playlist-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.playlist-header h2 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-mute);
  margin: 0;
  font-weight: 600;
}

.select-toggle-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-mute);
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}

.select-toggle-btn:hover { color: var(--text-main); border-color: var(--accent); }
.select-toggle-btn.on { color: var(--accent); border-color: var(--accent); background: rgba(63,231,255,0.08); }

.selection-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 10px;
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.selection-toolbar.hidden { display: none; }

.select-all-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-main);
  cursor: pointer;
}

.select-all-row input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

.selection-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.danger-btn {
  background: transparent;
  border: 1px solid #ff6b6b;
  color: #ff6b6b;
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}

.danger-btn:hover:not(:disabled) { background: rgba(255,107,107,0.1); }
.danger-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.cancel-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-mute);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}

.cancel-btn:hover { color: var(--text-main); }

.playlist li .track-checkbox {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

.playlist li.selected {
  background: rgba(255,107,107,0.08);
}

.add-buttons-row {
  display: flex;
  gap: 8px;
}

.add-files-btn {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex: 1;
}

.add-files-btn.secondary {
  border-color: var(--border);
  color: var(--text-main);
}

.add-files-btn:hover { background: rgba(63,231,255,0.08); }
.add-files-btn.secondary:hover { background: var(--bg-panel); }
.add-files-btn:active { transform: scale(0.97); }

#file-input, #folder-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  overflow: hidden;
}

label.add-files-btn {
  display: flex;
}

.playlist {
  list-style: none;
  margin: 0;
  padding: 0 6px 12px;
  max-height: min(45vh, 380px);
  overflow-y: auto;
}

.playlist::-webkit-scrollbar { width: 6px; }
.playlist::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.playlist li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-main);
  transition: background 0.12s;
}

.playlist li:hover { background: #1a222b; }

.playlist li.active {
  background: rgba(63,231,255,0.1);
  color: var(--accent);
}

.playlist li .track-index {
  width: 22px;
  text-align: right;
  color: var(--text-mute);
  font-family: var(--font-display);
  font-size: 11px;
  flex-shrink: 0;
}

.playlist li.active .track-index { color: var(--accent); }

.playlist li .track-info {
  flex: 1;
  overflow: hidden;
}

.playlist li .t-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.playlist li .t-dur {
  font-size: 11px;
  color: var(--text-mute);
  font-family: var(--font-display);
  flex-shrink: 0;
}

.playlist li .remove-btn {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 5px;
  border: none;
  background: transparent;
  color: var(--text-mute);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.15s, color 0.15s;
}

.playlist li:hover .remove-btn { opacity: 1; }
.playlist li .remove-btn:hover { color: #ff6b6b; }

/* Touch devices have no :hover — keep the remove button visible/tappable */
@media (hover: none) {
  .playlist li .remove-btn { opacity: 1; }
}
.playlist li .remove-btn svg { width: 14px; height: 14px; }

.empty-state {
  text-align: center;
  padding: 36px 20px;
  color: var(--text-mute);
  font-size: 13px;
  line-height: 1.6;
}

.empty-state svg {
  width: 36px;
  height: 36px;
  color: var(--lcd-fg-dim);
  margin-bottom: 10px;
}

/* Footer / like bar */
.footer-section {
  border-top: 1px solid var(--border);
  padding: 14px 16px 18px;
}

.footer-note {
  text-align: center;
  font-size: 11px;
  color: var(--text-mute);
  line-height: 1.6;
  margin-bottom: 12px;
}

.footer-note strong { color: var(--text-main); }

.like-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.like-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  color: var(--text-main);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.05s, color 0.15s;
}

.like-btn:hover { background: #1a222b; }
.like-btn:active { transform: scale(0.96); }

.like-btn svg {
  width: 16px;
  height: 16px;
  stroke: var(--text-mute);
  fill: none;
  stroke-width: 2;
  transition: stroke 0.15s, fill 0.15s;
}

.like-btn.liked {
  border-color: var(--accent-2);
  color: var(--accent-2);
}

.like-btn.liked svg {
  fill: var(--accent-2);
  stroke: var(--accent-2);
}

.like-count {
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--text-mute);
  min-width: 24px;
  text-align: left;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

@media (max-width: 380px) {
  .ctrl-btn { width: 38px; height: 36px; }
  .ctrl-btn.play { width: 50px; height: 44px; }
}

/* ============================================================
   Responsivo — tablet e desktop
   Mobile (padrão acima) continua como card único de até 420px.
   ============================================================ */

/* Tablet: card mais largo, playlist com mais altura visível */
@media (min-width: 700px) {
  body { padding: 24px; }

  .app {
    max-width: 620px;
  }

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

  .playlist {
    max-height: min(50vh, 460px);
  }

  #genre-track-list {
    max-height: min(55vh, 500px);
  }
}

/* Desktop: duas colunas — player fixo à esquerda, playlist alta à direita */
@media (min-width: 1000px) {
  body { padding: 32px; }

  .app {
    max-width: 960px;
  }

  #tab-player.active {
    display: flex;
    align-items: flex-start;
    gap: 0;
  }

  .player-main {
    flex: 0 0 340px;
    border-right: 1px solid var(--border);
  }

  .playlist-section {
    flex: 1;
    min-width: 0;
    border-top: none;
  }

  .playlist {
    max-height: min(64vh, 620px);
  }

  .genre-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  #genre-track-list {
    max-height: min(64vh, 620px);
  }

  .footer-section {
    text-align: center;
  }
}

/* Telas bem largas: um pouco mais de respiro, sem esticar demais */
@media (min-width: 1400px) {
  .app { max-width: 1080px; }
}