/* ===== CUSTOM PROPERTIES ===== */
:root {
  --color-bg: #1a0f0a;
  --color-bg-warm: #2c1810;
  --color-bg-card: #3a2218;
  --color-bg-hover: #4a2e20;
  --color-gold: #d4a056;
  --color-gold-light: #e8c47a;
  --color-gold-dim: #a07838;
  --color-text: #f5e6d3;
  --color-text-muted: #c4a882;
  --color-text-dim: #8a7060;
  --color-accent: #e8a838;
  --color-danger: #c0392b;
  --color-success: #27ae60;
  --color-border: #5a3a28;
  --color-focus: #e8c47a;

  --font-body: Georgia, 'Times New Roman', serif;
  --font-heading: Georgia, 'Times New Roman', serif;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);

  --min-touch: 44px;
}

/* ===== RESET ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ===== BASE ===== */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ===== APP CONTAINER ===== */
.app {
  max-width: 600px;
  margin: 1.5rem auto;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-warm);
  overflow: hidden;
}

@media (max-width: 767px) {
  .app {
    margin: 0;
    border: none;
    border-radius: 0;
  }
}

/* ===== ACCESSIBILITY ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

[hidden] {
  display: none !important;
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== HERO ===== */
.hero {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-bg-warm);
}

.hero__slideshow {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.7);
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.hero__image--active {
  opacity: 1;
}

.hero__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 33.33%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: linear-gradient(transparent, rgba(26, 15, 10, 0.85));
  text-align: center;
  z-index: 1;
}

.hero__logo {
  width: 50%;
  height: auto;
  max-width: 300px;
  display: block;
  margin-bottom: 0.25rem;
}

@media (max-width: 767px) {
  .hero {
    max-width: 100%;
    border-radius: 0;
  }
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 5vw, 3rem);
  color: var(--color-gold-light);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
  margin-bottom: 0.25rem;
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-muted);
  font-style: italic;
}

/* ===== MAIN LAYOUT ===== */
.main {
  padding: 1rem;
}

@media (min-width: 768px) {
  .main {
    padding: 1.5rem;
  }
}

/* ===== CONTROLS ===== */
.controls {
  margin-top: 1rem;
  margin-bottom: 1.5rem;
}

.controls__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.genre-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.genre-filter__btn {
  padding: 0.5rem 1rem;
  min-height: var(--min-touch);
  min-width: var(--min-touch);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}

.genre-filter__btn:hover {
  background: var(--color-bg-hover);
  color: var(--color-text);
}

.genre-filter__btn--active {
  background: var(--color-gold-dim);
  color: var(--color-bg);
  border-color: var(--color-gold);
  font-weight: bold;
}

.search-bar {
  flex: 1;
  min-width: 200px;
}

.search-bar__input {
  width: 100%;
  padding: 0.6rem 1rem;
  min-height: var(--min-touch);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
}

.search-bar__input::placeholder {
  color: var(--color-text-dim);
}

.sort-control__select {
  padding: 0.6rem 1rem;
  min-height: var(--min-touch);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.9rem;
}

/* ===== SONG LIST ===== */
.song-list {
  margin-bottom: 1.5rem;
}

.song-list__header {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  margin-left: -0.25rem;
  margin-right: -0.25rem;
  justify-content: center;
  flex-wrap: wrap;
}

.song-list__container {
  max-height: 60vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-warm);
}

.song-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  min-height: var(--min-touch);
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  transition: background-color 0.1s;
}

.song-row:last-child {
  border-bottom: none;
}

.song-row:hover {
  background: var(--color-bg-hover);
}

.song-row--active {
  background: var(--color-bg-hover);
  border-left: 3px solid var(--color-gold);
}

.song-row--focused {
  background: var(--color-bg-hover);
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}

.song-row__checkbox {
  width: 20px;
  height: 20px;
  min-width: 20px;
  accent-color: var(--color-gold);
}

.song-row__title {
  flex: 1;
  font-size: 1rem;
  color: var(--color-text);
}

.song-row__genre {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  white-space: nowrap;
}

.song-row__duration {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  min-width: 3.5rem;
  text-align: right;
}

.song-list__empty {
  padding: 2rem;
  text-align: center;
  color: var(--color-text-muted);
  font-style: italic;
}

.song-list__total {
  padding: 0.5rem 1rem;
  text-align: right;
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

/* ===== PLAYLIST PANEL ===== */
.playlist-panel {
  margin-bottom: 1.5rem;
}

.playlist-panel__title {
  font-size: 1.25rem;
  color: var(--color-gold-light);
  margin-bottom: 0.75rem;
}

.playlist-panel__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.playlist-entry {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color 0.1s;
}

.playlist-entry:hover {
  background: var(--color-bg-hover);
}

.playlist-entry__name {
  font-size: 1rem;
  color: var(--color-text);
}

.playlist-entry__meta {
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

.playlist-entry__actions {
  display: flex;
  gap: 0.25rem;
}

.playlist-panel__empty {
  padding: 1rem;
  text-align: center;
  color: var(--color-text-muted);
  font-style: italic;
  font-size: 0.95rem;
}

/* Playlist Detail View */
.playlist-detail__title {
  font-size: 1.1rem;
  color: var(--color-gold-light);
  margin: 0.75rem 0 0.5rem;
}

.playlist-detail__songs {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.playlist-detail__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.playlist-detail__song-title {
  font-size: 0.9rem;
  color: var(--color-text);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.playlist-detail__controls {
  display: flex;
  gap: 0.25rem;
  flex-shrink: 0;
}

.playlist-detail__empty {
  padding: 1rem;
  text-align: center;
  color: var(--color-text-muted);
  font-style: italic;
}

.playlist-entry__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  cursor: pointer;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  min-height: var(--min-touch);
  min-width: var(--min-touch);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background-color 0.15s, opacity 0.15s;
}

.btn:hover {
  background: var(--color-bg-hover);
}

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

.btn--primary {
  background: var(--color-gold-dim);
  color: var(--color-bg);
  border-color: var(--color-gold);
  font-weight: bold;
}

.btn--primary:hover {
  background: var(--color-gold);
}

.btn--danger {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}

.btn--danger:hover {
  opacity: 0.85;
}

.btn--small {
  padding: 0.25rem 0.5rem;
  min-height: 32px;
  min-width: 32px;
  font-size: 0.8rem;
}

/* ===== PLAYER BAR ===== */
.player-bar {
  background: var(--color-bg);
  border-top: 3px solid var(--color-gold-dim);
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.5rem;
}

.player-bar__now-playing {
  text-align: center;
  min-height: 1.5rem;
}

.player-bar__status {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.player-bar__song-title {
  font-size: 1.1rem;
  color: var(--color-gold-light);
  margin-left: 0.5rem;
}

.player-bar__progress {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.player-bar__time {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  min-width: 3rem;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.player-bar__progress-track {
  flex: 1;
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  cursor: pointer;
  position: relative;
  min-height: var(--min-touch);
  display: flex;
  align-items: center;
}

.player-bar__progress-track::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 6px;
  transform: translateY(-50%);
  background: var(--color-border);
  border-radius: 3px;
}

.player-bar__progress-fill {
  position: absolute;
  top: 50%;
  left: 0;
  height: 6px;
  transform: translateY(-50%);
  background: var(--color-gold);
  border-radius: 3px;
  width: 0%;
  transition: width 0.1s linear;
}

.player-bar__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.player-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--min-touch);
  height: var(--min-touch);
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s;
}

.player-btn:hover {
  background: var(--color-bg-hover);
}

.player-btn--play {
  width: 56px;
  height: 56px;
  background: var(--color-gold-dim);
  color: var(--color-bg);
}

.player-btn--play:hover {
  background: var(--color-gold);
}

.player-btn--active {
  color: var(--color-gold);
}

.player-btn__icon {
  fill: currentColor;
}

.player-btn__loading {
  display: flex;
  align-items: center;
  justify-content: center;
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-text-dim);
  border-top-color: var(--color-gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.player-bar__volume {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  justify-content: center;
}

.player-bar__volume-slider {
  width: 100px;
  height: 4px;
  accent-color: var(--color-gold);
}

.player-bar__timed {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.player-bar__timer {
  font-size: 0.85rem;
  color: var(--color-gold-light);
  font-variant-numeric: tabular-nums;
}

/* ===== DIALOGS ===== */
/* Polyfill: hide <dialog> when not open (for browsers without native support) */
dialog:not([open]) {
  display: none;
}

.dialog {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-warm);
  color: var(--color-text);
  padding: 1.5rem;
  max-width: 400px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  margin: 0;
  z-index: 1000;
}

.dialog::backdrop {
  background: rgba(0, 0, 0, 0.7);
}

.dialog h2 {
  color: var(--color-gold-light);
  margin-bottom: 0.75rem;
}

.dialog p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

.dialog__input {
  width: 100%;
  padding: 0.6rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.dialog__options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.dialog__actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
}

/* ===== FOOTER ===== */
.footer {
  text-align: center;
  padding: 1.5rem 1rem;
  border-top: 1px solid var(--color-border);
}

.footer__copyright {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  margin-bottom: 0.75rem;
}

.footer__copyright a {
  color: var(--color-gold);
  text-decoration: none;
  opacity: 0.8;
}

.footer__copyright a:hover {
  opacity: 1;
}

.tip-jar-section {
  margin-top: 0.25rem;
  text-align: center;
}

.tip-jar-section__text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.4;
  margin: 0 0 0.5rem;
}

.tip-jar-section__content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.tip-jar-btn {
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: transform 0.2s;
  position: relative;
  top: 1px;
}

.tip-jar-btn:hover {
  transform: scale(1.08);
}

.qr-code {
  background: #fff;
  padding: 4px;
  border-radius: 4px;
}

.footer__reset {
  display: inline-block;
  margin-top: 1rem;
  color: var(--color-text-dim);
  text-decoration: underline;
  font-size: 0.8rem;
}

.footer__reset:hover {
  color: var(--color-text-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 767px) {
  .player-bar__volume-slider {
    width: 80px;
  }

  .controls__filters {
    flex-direction: column;
    align-items: stretch;
  }

  .search-bar {
    min-width: unset;
  }
}

@media (min-width: 1024px) {
  .player-bar__volume-slider {
    width: 100px;
  }
}