/* ============================================
   VIBESTATION — Responsive Design System
   Palette: #483c58 (bg), #544768 (glass), 
   rgba(153,137,190) accents, Montserrat
   ============================================ */

/* ---------- BASE ---------- */
:root {
  --bg-deep: #483c58;
  --bg-glass: #544768;
  --glass-border: rgba(255, 255, 255, 0.06);
  --accent: rgba(153, 137, 190, 0.25);
  --accent-solid: rgb(117, 104, 135);
  --text-primary: #fff;
  --text-muted: rgba(255, 255, 255, 0.55);
  --hover-white: rgba(255, 255, 255, 0.1);
  --hover-white-strong: rgba(255, 255, 255, 0.2);
  --card-bg: rgba(0, 0, 0, 0.2);
  --card-bg-hover: rgba(0, 0, 0, 0.3);
  --blur-heavy: blur(60px);
  --blur-light: blur(10px);
  --radius-xl: 24px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --shadow-soft: 0px 4px 4px rgba(0, 0, 0, 0.2);
  --player-height-desktop: 100px;
  --player-height-mobile: 140px;
  --sidebar-width: 260px;
  --transition: 0.3s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  background: var(--bg-deep);
  color: var(--text-primary);
  overflow-x: hidden;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

/* ---------- SCROLLBAR ---------- */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--accent-solid);
  border-radius: 3px;
}

/* ===========================================
   LAYOUT — Desktop-first with mobile overrides
   =========================================== */

.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ---------- SIDEBAR (Desktop) ---------- */
.sidebar-desktop {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-glass);
  border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
  padding: 0 16px 24px;
  display: flex;
  flex-direction: column;
  z-index: 1040;
  overflow-y: auto;
  overflow-x: hidden;
}

.main-content-wrapper {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 32px 40px;
  padding-bottom: calc(var(--player-height-desktop) + 60px);
  min-height: 100vh;
}

/* ---------- MOBILE NAVBAR ---------- */
.mobile-navbar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(68, 54, 88, 0.85);
  backdrop-filter: var(--blur-heavy);
  -webkit-backdrop-filter: var(--blur-heavy);
  z-index: 1050;
  padding: 0 16px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--glass-border);
}

.mobile-navbar .navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.mobile-navbar .navbar-brand img {
  height: 28px;
}

.mobile-navbar .navbar-brand span {
  font-size: 1.1rem;
  font-weight: 700;
}

.mobile-navbar .menu-toggle {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 24px;
  padding: 8px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.mobile-navbar .menu-toggle:hover {
  background: var(--hover-white);
}

/* ---------- MOBILE SIDEBAR OVERLAY ---------- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1060;
  opacity: 0;
  transition: opacity var(--transition);
}

.sidebar-overlay.active {
  opacity: 1;
}

.sidebar-mobile {
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100vh;
  background: var(--bg-glass);
  z-index: 1070;
  padding: 20px 16px 24px;
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform var(--transition);
  overflow-y: auto;
}

.sidebar-mobile.open {
  transform: translateX(0);
}

.sidebar-mobile .sidebar-close {
  align-self: flex-end;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 20px;
  padding: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.sidebar-mobile .sidebar-close:hover {
  background: var(--hover-white);
}

/* ---------- SIDEBAR SHARED STYLES ---------- */
.logo-img-container {
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 24px 0 16px;
}

.logo-svg-image {
  width: 200px;
  max-width: 90%;
  height: auto;
  display: block;
  opacity: 0.4;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.sidebar-btn {
  width: 100%;
  text-align: left;
  padding: 12px 16px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-primary);
  font-family: 'Montserrat', sans-serif;
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-btn:hover {
  background: var(--hover-white);
}

.sidebar-btn.active {
  background: var(--hover-white-strong);
  font-weight: 700;
}

.sidebar-btn-small {
  font-size: 10px !important;
  padding: 8px 16px;
  color: var(--text-muted);
}

.sidebar-separator {
  width: 100%;
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  margin: 4px 0;
}

/* Auth panel */
.auth-section {
  margin-top: auto;
  padding-top: 12px;
}

.auth-buttons .sidebar-btn.btn-google {
  background: rgba(255, 255, 255, 0.08);
  text-align: center;
  font-size: 14px;
  padding: 12px;
}

.auth-buttons .sidebar-btn.btn-google:hover {
  background: var(--hover-white-strong);
}

.user-panel {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 0, 0, 0.15);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
}

.user-panel img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.user-panel .user-nickname {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100px;
  flex: 1;
}

.user-panel .logout-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 8px;
  transition: all var(--transition);
  white-space: nowrap;
}

.user-panel .logout-btn:hover {
  color: var(--text-primary);
  background: var(--hover-white);
}

/* ===========================================
   MAIN CONTENT
   =========================================== */

.page-title {
  display: inline-block;
  position: relative;
  padding-bottom: 16px;
  margin-bottom: 24px;
}

.page-title h1 {
  font-size: 3.5rem;
  font-weight: 900;
  margin: 0;
  background: linear-gradient(169deg, #fff, #999);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
}

.title-underline {
  position: absolute;
  left: -12px;
  right: -12px;
  bottom: 0;
  height: 3px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 1px;
}

/* Section header (ПОПУЛЯРНОЕ / МОЙ ВАЙБ) */
.section-header {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border-radius: 20px;
  font-size: 1.5rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.7);
  background: rgba(42, 34, 60, 0.35);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  cursor: default;
  margin-bottom: 28px;
  text-transform: uppercase;
}

.section-header .play-all-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.33);
  border-radius: 20px;
  width: 50px;
  height: 50px;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-primary);
}

.section-header .play-all-btn:hover {
  background: rgba(0, 0, 0, 0.4);
  transform: scale(1.05);
}

.section-header .play-all-btn i {
  font-size: 18px;
  margin-left: 2px;
}

/* ---------- TRACK GRID ---------- */
.tracks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
}

.album-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 14px;
  transition: all var(--transition);
  cursor: pointer;
  animation: fadeIn 0.5s ease both;
}

.album-card:hover {
  transform: translateY(-8px);
  background: var(--card-bg-hover);
}

.album-cover {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.album-cover .play-button {
  position: absolute;
  bottom: 8px;
  right: 8px;
  width: 44px;
  height: 44px;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  color: var(--text-primary);
}

.album-cover .play-button::before {
  content: '▶';
  color: var(--text-primary);
  font-size: 16px;
  margin-left: 2px;
}

.album-card:hover .play-button {
  opacity: 1;
}

.album-title {
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 4px;
}

.album-artist {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 404 ---------- */
.page-404 .empty-msg {
  font-size: 1.2rem;
  color: var(--text-muted);
  padding: 10px 20px;
  border-radius: 20px;
  background: rgba(42, 34, 60, 0.35);
  display: inline-block;
}

/* ===========================================
   PLAYER
   =========================================== */

.player {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  padding: 0 12px 12px;
}

.player-inner {
  position: relative;
  max-width: 100%;
  margin: 0 auto;
  border-radius: var(--radius-xl);
  overflow: visible;
}

.background-player {
  position: absolute;
  inset: 0;
  background: rgba(44, 31, 63, 0.35);
  backdrop-filter: var(--blur-heavy);
  -webkit-backdrop-filter: var(--blur-heavy);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
  z-index: -1;
}

.player-content {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  align-items: center;
  gap: 16px;
  padding: 10px 20px;
  min-height: 80px;
}

/* Player: Track info */
.player-info {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.more-dots {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 10px 6px;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background var(--transition);
  flex-shrink: 0;
}

.more-dots:hover {
  background: var(--hover-white);
}

.more-dots span {
  width: 5px;
  height: 5px;
  background: #c9c0d6;
  border-radius: 50%;
  transition: all var(--transition);
}

.more-dots:hover span {
  background: #e8e1f5;
  transform: scale(1.2);
}

.player-cover-back {
  width: 70px;
  height: 70px;
  display: flex;
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  backdrop-filter: var(--blur-heavy);
  -webkit-backdrop-filter: var(--blur-heavy);
  background: var(--accent);
  flex-shrink: 0;
  position: relative;
  top: -16px;
}

.player-cover {
  width: 60px;
  height: 60px;
  display: flex;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  background-size: cover;
  background-position: center;
}

.player-track-info {
  min-width: 0;
  flex: 1;
}

.background-name-music {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 50px;
  background: var(--accent);
  backdrop-filter: var(--blur-heavy);
  -webkit-backdrop-filter: var(--blur-heavy);
  font-size: inherit;
  line-height: normal;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.player-track-info h3 {
  font-size: 14px;
  font-weight: 700;
  margin: 0;
}

.player-track-info .artist-name {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Player: Controls */
.player-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.player-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.player .control-btn {
  background: var(--hover-white);
  border: none;
  color: var(--text-primary);
  border-radius: 14px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  flex-shrink: 0;
}

.player .control-btn:hover {
  background: var(--hover-white-strong);
  transform: scale(1.08);
}

.player .control-btn i {
  font-size: 20px;
}

.player .play-pause {
  background: var(--accent);
  color: rgba(211, 211, 211, 1);
  width: 72px;
  height: 72px;
  border-radius: 20px;
  backdrop-filter: var(--blur-light);
  -webkit-backdrop-filter: var(--blur-light);
  position: relative;
  top: -6px;
}

.player .play-pause i {
  font-size: 32px;
}

/* Player: Progress */
.player-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  max-width: 500px;
}

.player-progress .time {
  font-size: 11px;
  color: var(--text-muted);
  min-width: 32px;
  text-align: center;
  font-weight: 600;
}

.progress {
  background: rgba(15, 11, 21, 0.35);
  height: 8px;
  border-radius: 4px;
  backdrop-filter: var(--blur-heavy);
  -webkit-backdrop-filter: var(--blur-heavy);
  box-shadow: 0px 2px 4px rgba(0, 0, 0, 0.05);
  flex: 1;
  cursor: pointer;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: rgba(229, 210, 225, 0.4);
  border-radius: 4px;
  transition: width 0.1s linear;
}

/* Player: Volume */
.player-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.volume-control {
  position: relative;
  display: inline-block;
}

#volumeBtn {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

#volumeBtn:hover {
  transform: scale(1.1);
}

.volume-popup {
  position: absolute;
  bottom: 55px;
  right: 0;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: var(--blur-heavy);
  -webkit-backdrop-filter: var(--blur-heavy);
  border-radius: var(--radius-md);
  padding: 4px 12px;
  padding-top: 20px;
  width: 52px;
  text-align: center;
  box-shadow: 0px 5px 10px rgba(0, 0, 0, 0.2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 1050;
  border: 1px solid rgba(255, 255, 255, 0.33);
}

.volume-popup.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.volume-track {
  width: 12px;
  height: 120px;
  background: rgb(57, 48, 71);
  border-radius: 6px;
  margin: 0 auto 10px;
  position: relative;
  overflow: hidden;
}

.volume-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 70%;
  background: var(--accent-solid);
  border-radius: 3px;
  transition: height 0.15s ease;
}

.volume-thumb {
  position: absolute;
  bottom: calc(70% - 7px);
  left: 50%;
  transform: translateX(-50%);
  width: 14px;
  height: 14px;
  background: var(--accent-solid);
  border-radius: 50%;
  transition: bottom 0.15s ease;
  cursor: grab;
}

.volume-value {
  font-family: 'Montserrat', sans-serif;
  color: rgb(149, 142, 160);
  font-weight: 700;
  font-size: 16px;
}

/* ===========================================
   UPLOAD PAGE
   =========================================== */

.upload-area {
  border: 2px dashed rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  padding: 30px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-muted);
}

.upload-area:hover {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.05);
}

.upload-area.dragover {
  border-color: var(--accent-solid);
  background: rgba(153, 137, 190, 0.1);
}

.preview-image {
  max-width: 200px;
  max-height: 200px;
  border-radius: var(--radius-sm);
  margin-top: 10px;
}

.error-message {
  color: #ff6b6b;
  font-size: 0.9rem;
  margin-top: 5px;
}

.success-message {
  color: #69db7c;
  font-size: 0.9rem;
  margin-top: 5px;
}

/* Upload form inputs — match glass aesthetic */
.upload-page .form-control {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
}

.upload-page .form-control:focus {
  background: rgba(0, 0, 0, 0.3);
  border-color: var(--accent-solid);
  box-shadow: 0 0 0 2px rgba(153, 137, 190, 0.2);
  color: var(--text-primary);
}

.upload-page .form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.upload-page .btn-primary {
  background: var(--accent-solid);
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 32px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 14px;
  transition: all var(--transition);
}

.upload-page .btn-primary:hover {
  background: rgb(137, 124, 155);
  transform: translateY(-2px);
}

/* Upload modal */
.upload-page .modal-content {
  background: var(--bg-glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
}

.upload-page .modal-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* ===========================================
   RESPONSIVE — TABLET (≤ 1024px)
   =========================================== */

@media (max-width: 1024px) {
  .sidebar-desktop {
    width: 220px;
  }

  .main-content-wrapper {
    margin-left: 220px;
    padding: 28px 24px;
    padding-bottom: calc(var(--player-height-desktop) + 60px);
  }

  .page-title h1 {
    font-size: 2.8rem;
  }

  .section-header {
    font-size: 1.25rem;
  }

  .tracks-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
  }

  .logo-svg-image {
    width: 160px;
  }

  .sidebar-btn {
    font-size: 13px;
    padding: 10px 14px;
  }
}

/* ===========================================
   RESPONSIVE — MOBILE (≤ 768px)
   =========================================== */

@media (max-width: 768px) {
  /* Hide desktop sidebar, show mobile nav */
  .sidebar-desktop {
    display: none;
  }

  .mobile-navbar {
    display: flex;
  }

  .sidebar-overlay {
    display: block;
  }

  .main-content-wrapper {
    margin-left: 0;
    padding: 76px 16px 16px;
    padding-bottom: calc(var(--player-height-mobile) + 40px);
  }

  /* Title */
  .page-title h1 {
    font-size: 2.2rem;
  }

  .page-title {
    margin-bottom: 16px;
  }

  /* Section header */
  .section-header {
    font-size: 1.1rem;
    padding: 8px 16px;
    margin-bottom: 20px;
    gap: 8px;
  }

  .section-header .play-all-btn {
    width: 42px;
    height: 42px;
  }

  /* Track grid — 2 columns */
  .tracks-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .album-card {
    padding: 10px;
    border-radius: var(--radius-md);
  }

  .album-card .play-button {
    opacity: 0.8;
    width: 38px;
    height: 38px;
  }

  .album-cover {
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
  }

  .album-title {
    font-size: 13px;
  }

  .album-artist {
    font-size: 11px;
  }

  /* ---- PLAYER MOBILE ---- */
  .player {
    padding: 0 8px 8px;
  }

  .player-content {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    gap: 4px;
    padding: 8px 12px 10px;
  }

  .player-info {
    order: 1;
    gap: 10px;
  }

  .more-dots {
    display: none;
  }

  .player-cover-back {
    width: 48px;
    height: 48px;
    top: 0;
    border-radius: 10px;
  }

  .player-cover {
    width: 40px;
    height: 40px;
    font-size: 20px;
    border-radius: 6px;
  }

  .player-track-info h3 {
    font-size: 13px;
  }

  .player-track-info .artist-name {
    font-size: 11px;
    margin-top: 2px;
  }

  .background-name-music {
    padding: 2px 8px;
  }

  .player-controls {
    order: 2;
    gap: 6px;
  }

  .player-buttons {
    gap: 6px;
  }

  .player .control-btn {
    width: 40px;
    height: 40px;
    border-radius: 12px;
  }

  .player .control-btn i {
    font-size: 18px;
  }

  .player .play-pause {
    width: 56px;
    height: 56px;
    top: 0;
    border-radius: 16px;
  }

  .player .play-pause i {
    font-size: 26px;
  }

  .player-progress {
    max-width: 100%;
  }

  .player-progress .time {
    font-size: 10px;
    min-width: 28px;
  }

  .progress {
    height: 6px;
  }

  .player-actions {
    /* Volume button sits inline with controls on mobile */
    display: none;
  }

  /* Upload page */
  .upload-page .col-md-8 {
    width: 100%;
  }

  .upload-area {
    padding: 20px;
  }

  .upload-area p {
    font-size: 14px;
  }
}

/* ===========================================
   RESPONSIVE — SMALL PHONE (≤ 400px)
   =========================================== */

@media (max-width: 400px) {
  .page-title h1 {
    font-size: 1.8rem;
  }

  .section-header {
    font-size: 0.95rem;
    padding: 6px 12px;
  }

  .tracks-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .album-card {
    padding: 8px;
  }

  .album-title {
    font-size: 12px;
  }

  .album-artist {
    font-size: 10px;
  }

  .player .play-pause {
    width: 50px;
    height: 50px;
  }

  .player .control-btn {
    width: 36px;
    height: 36px;
  }

  .player .control-btn i {
    font-size: 16px;
  }
}

/* ===========================================
   RESPONSIVE — LARGE DESKTOP (≥ 1400px)
   =========================================== */

@media (min-width: 1400px) {
  .sidebar-desktop {
    width: 300px;
  }

  .main-content-wrapper {
    margin-left: 300px;
    padding: 40px 60px;
    padding-bottom: calc(var(--player-height-desktop) + 60px);
  }

  .tracks-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 24px;
  }

  .logo-svg-image {
    width: 240px;
  }

  .sidebar-btn {
    font-size: 16px;
  }

  .page-title h1 {
    font-size: 4rem;
  }
}

/* ===========================================
   LOADING
   =========================================== */

#loading {
  text-align: center;
  padding: 20px;
  color: var(--text-muted);
  font-size: 14px;
  display: none;
}