:root {
  --bg: #07131a;
  --bg-2: #0f2230;
  --panel: rgba(12, 22, 35, 0.82);
  --panel-border: rgba(255, 255, 255, 0.12);
  --text: #f4f8fb;
  --muted: #9db1c1;
  --accent: #ff8c42;
  --accent-2: #2ed3c6;
  --accent-3: #ffd166;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(255, 140, 66, 0.22), transparent 26%),
    radial-gradient(circle at top right, rgba(46, 211, 198, 0.2), transparent 24%),
    linear-gradient(160deg, var(--bg) 0%, var(--bg-2) 52%, #081017 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

.auth-body {
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-shell,
.hero-grid,
.topbar,
.dashboard-grid,
.library-toolbar,
.track-grid,
.player-bar,
.player-progress {
  display: grid;
  gap: 18px;
}

.auth-shell {
  width: min(1080px, 100%);
  grid-template-columns: minmax(320px, 1fr) 320px;
}

.auth-card,
.auth-note,
.hero,
.panel-card,
.track-card,
.player-bar {
  border: 1px solid var(--panel-border);
  border-radius: 28px;
  background: var(--panel);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.auth-card,
.auth-note,
.panel-card,
.hero {
  padding: 28px;
}

.auth-card h1,
.hero-copy h1,
.section-heading h2,
.player-meta h3 {
  margin: 0;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

.eyebrow,
.player-label,
.card-label {
  margin: 0 0 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.78rem;
  color: var(--accent-3);
}

.auth-copy,
.hero-text,
.muted,
.track-meta,
#now-playing-subtitle,
.search-box span,
.form-message {
  color: var(--muted);
}

.auth-form,
.upload-form {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.auth-form label,
.upload-form label,
.search-box {
  display: grid;
  gap: 8px;
}

input[type="text"],
input[type="password"],
input[type="search"],
input[type="file"] {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 16px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  outline: none;
}

input:focus {
  border-color: rgba(255, 209, 102, 0.7);
}

.button,
.genre-pill,
.track-action,
.player-button {
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 180ms ease, background 180ms ease;
}

.button:hover,
.genre-pill:hover,
.track-action:hover,
.player-button:hover,
.track-card:hover {
  transform: translateY(-2px);
}

.button,
.track-action,
.player-button {
  padding: 12px 18px;
  font-weight: 700;
}

.button-primary,
.player-button-primary,
.genre-pill.active,
.track-action-play {
  color: #12202a;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
}

.button-secondary,
.track-action-delete,
.genre-pill,
.player-button {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.track-action-delete {
  border: 1px solid rgba(255, 107, 107, 0.3);
  color: #ffd4d4;
}

.form-message-error {
  color: #ffd4d4;
}

.form-message-success {
  color: #acf7d6;
}

.site-shell {
  padding: 24px 24px 140px;
}

.home-shell {
  padding-bottom: 40px;
}

.home-grid {
  align-items: stretch;
}

.home-main {
  margin-top: 24px;
}

.home-sections {
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
}

.home-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.home-feature-card {
  margin-top: 18px;
}

.home-points {
  display: grid;
  gap: 16px;
}

.home-point {
  padding: 18px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
}

.home-point h3 {
  margin: 0 0 8px;
}

.topbar {
  grid-template-columns: 1fr auto;
  align-items: center;
}

.brand,
.topbar-actions,
.hero-stats,
.genre-pills,
.track-footer,
.track-actions,
.player-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

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

.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 22px rgba(255, 140, 66, 0.58);
}

.user-chip {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--muted);
}

.hero-grid {
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.9fr);
  margin-top: 34px;
  align-items: center;
}

.hero-copy h1 {
  max-width: 12ch;
  font-size: clamp(2.6rem, 6vw, 5rem);
  line-height: 0.94;
}

.hero-stats {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.hero-stats li {
  min-width: 140px;
  padding: 14px 16px;
  border-radius: 20px;
  border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.04);
}

.hero-stats strong {
  display: block;
  font-size: 1.7rem;
}

.app-main {
  margin-top: 28px;
}

.dashboard-grid {
  grid-template-columns: minmax(300px, 0.95fr) minmax(0, 1.35fr);
  align-items: start;
}

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

.section-heading h2 {
  font-size: clamp(1.7rem, 4vw, 2.8rem);
}

.library-toolbar {
  grid-template-columns: 1fr minmax(220px, 300px);
  align-items: end;
}

.genre-pills {
  margin: 18px 0 8px;
}

.genre-pill {
  padding: 10px 16px;
}

.track-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.preview-card {
  margin: 18px 0;
}

.media-player {
  width: 100%;
  min-height: 260px;
  border-radius: 20px;
  background: #02070a;
}

.embed-player {
  border: 0;
}

.track-card {
  padding: 20px;
}

.track-card.is-active {
  outline: 2px solid rgba(255, 209, 102, 0.6);
}

.track-topline {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.track-tag {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(46, 211, 198, 0.12);
  color: #9ef8ef;
  font-size: 0.84rem;
}

.track-cover {
  height: 150px;
  margin-bottom: 16px;
  border-radius: 20px;
  background:
    linear-gradient(135deg, rgba(255, 140, 66, 0.52), rgba(46, 211, 198, 0.26)),
    linear-gradient(45deg, rgba(255, 255, 255, 0.08), transparent);
}

.track-card h3 {
  margin: 0 0 8px;
}

.track-meta {
  min-height: 48px;
  margin: 0 0 18px;
  line-height: 1.6;
}

.track-footer {
  justify-content: space-between;
}

.track-actions {
  gap: 10px;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 28px;
  border-radius: 24px;
  text-align: center;
  border: 1px dashed rgba(255, 255, 255, 0.16);
  color: var(--muted);
}

.player-bar {
  position: fixed;
  left: 18px;
  right: 18px;
  bottom: 18px;
  grid-template-columns: minmax(0, 1.2fr) auto minmax(280px, 0.9fr);
  align-items: center;
  padding: 16px 20px;
}

.player-progress {
  grid-template-columns: auto 1fr auto;
  align-items: center;
}

#progress {
  width: 100%;
}

code {
  padding: 2px 6px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

@media (max-width: 1080px) {
  .auth-shell,
  .hero-grid,
  .dashboard-grid,
  .home-sections,
  .library-toolbar,
  .player-bar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .site-shell {
    padding: 14px 14px 180px;
  }

  .auth-card,
  .auth-note,
  .hero,
  .panel-card,
  .player-bar {
    border-radius: 22px;
  }

  .topbar,
  .track-grid {
    grid-template-columns: 1fr;
  }

  .track-grid {
    display: grid;
  }

  .player-bar {
    left: 12px;
    right: 12px;
    bottom: 12px;
  }

  .hero-copy h1 {
    max-width: none;
  }
}