/* ═══════════════════════════════════════════════
   HAPPY MUSIC – style.css
   Paleta: #0A0A0A | #1A1A1A | #2A2A2A | #7B00FF | #FFFFFF | #AAAAAA
═══════════════════════════════════════════════ */

/* ── TOKENS ────────────────────────────────── */
:root {
  --bg:          #0A0A0A;
  --surface:     #1A1A1A;
  --surface2:    #242424;
  --border:      #2A2A2A;
  --purple:      #7B00FF;
  --purple-soft: #9D33FF;
  --purple-glow: rgba(123, 0, 255, 0.25);
  --white:       #FFFFFF;
  --grey:        #AAAAAA;
  --grey-dark:   #555555;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;

  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   22px;
  --radius-full: 999px;

  --header-h:    60px;
  --player-h:    148px;
  --nav-h:       68px;

  --transition:  0.2s ease;
}

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

html {
  font-size: 16px;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--white);
  min-height: 100dvh;
  overflow: hidden;
  user-select: none;
}

button { background: none; border: none; cursor: pointer; font-family: inherit; color: inherit; }
input  { font-family: inherit; }
img    { display: block; }

/* ── SCREENS ───────────────────────────────── */
.screen { display: none; width: 100%; height: 100dvh; }
.screen.active { display: flex; flex-direction: column; }

/* ── TELA DE LOGIN ─────────────────────────── */
#screen-login {
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(123,0,255,0.18) 0%, transparent 70%), var(--bg);
}

.login-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 40px 32px;
  text-align: center;
}

.login-logo {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  box-shadow: 0 0 40px var(--purple-glow), 0 0 80px rgba(123,0,255,0.12);
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 40px var(--purple-glow), 0 0 80px rgba(123,0,255,0.12); }
  50%       { box-shadow: 0 0 60px rgba(123,0,255,0.45), 0 0 100px rgba(123,0,255,0.2); }
}

.login-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.login-sub {
  color: var(--grey);
  font-size: 0.95rem;
  line-height: 1.5;
}

.btn-google {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding: 14px 28px;
  background: var(--purple);
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}

.btn-google:hover  { background: var(--purple-soft); box-shadow: 0 0 24px var(--purple-glow); }
.btn-google:active { transform: scale(0.97); }

/* ── APP HEADER ────────────────────────────── */
.app-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(10,10,10,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 100;
  border-bottom: 1px solid var(--border);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-logo {
  width: 32px;
  height: 32px;
  border-radius: 50%;
}

.header-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--grey);
  transition: color var(--transition), background var(--transition);
}

.icon-btn:hover  { color: var(--white); background: var(--surface); }
.icon-btn:active { background: var(--surface2); }

.avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--purple);
}

/* ── SEARCH BAR ────────────────────────────── */
.search-bar {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  z-index: 99;
  color: var(--grey);
}

.search-bar input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--white);
  font-size: 0.95rem;
}

.search-bar input::placeholder { color: var(--grey-dark); }

/* ── MAIN CONTENT ──────────────────────────── */
.main-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding-top: calc(var(--header-h) + 8px);
  padding-bottom: calc(var(--player-h) + var(--nav-h) + 8px);
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.main-content::-webkit-scrollbar { display: none; }

/* ── VIEWS ─────────────────────────────────── */
.view { display: none; padding: 16px; animation: fade-in 0.2s ease; }
.view.active { display: block; }

@keyframes fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── SECTION TITLE ─────────────────────────── */
.section-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

/* ── SHELF ─────────────────────────────────── */
.shelf { margin-bottom: 32px; }

.shelf-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.shelf-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 12px;
}

.shelf-header .shelf-label { margin-bottom: 0; }

.text-btn {
  font-size: 0.8rem;
  color: var(--purple-soft);
  font-weight: 500;
  transition: color var(--transition);
}

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

/* ── RECENT GRID ───────────────────────────── */
.recent-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.recent-item {
  background: var(--surface);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  cursor: pointer;
  transition: background var(--transition);
  overflow: hidden;
}

.recent-item:hover  { background: var(--surface2); }
.recent-item:active { background: var(--border); }

.recent-art {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--purple);
}

.recent-name {
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── TRACK LIST ────────────────────────────── */
.track-list { display: flex; flex-direction: column; gap: 2px; }

.track-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
}

.track-item:hover  { background: var(--surface); }
.track-item:active { background: var(--surface2); }
.track-item.playing { background: rgba(123,0,255,0.12); }

.track-num {
  width: 20px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--grey-dark);
  flex-shrink: 0;
}

.track-item.playing .track-num { color: var(--purple); }

.track-art {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  background: var(--surface2);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--grey-dark);
  overflow: hidden;
}

.track-art img { width: 100%; height: 100%; object-fit: cover; }

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

.track-title {
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-item.playing .track-title { color: var(--purple-soft); }

.track-meta {
  font-size: 0.75rem;
  color: var(--grey);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

.track-duration {
  font-size: 0.75rem;
  color: var(--grey-dark);
  flex-shrink: 0;
}

/* ── SKELETON ──────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--surface) 25%, var(--surface2) 50%, var(--surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  min-height: 64px;
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── PLAYER ────────────────────────────────── */
.player {
  position: fixed;
  bottom: var(--nav-h);
  left: 0; right: 0;
  background: rgba(26,26,26,0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-top: 1px solid var(--border);
  padding: 12px 16px 8px;
  z-index: 90;
  transition: transform var(--transition);
}

.player.hidden { transform: translateY(100%); pointer-events: none; }

/* faixa roxa no topo do player */
.player::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--purple), transparent);
}

.player-track {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.player-art {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--surface2);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--purple);
  overflow: hidden;
}

.player-art img { width: 100%; height: 100%; object-fit: cover; }

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

.player-title {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.player-artist {
  display: block;
  font-size: 0.75rem;
  color: var(--grey);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

.fav-btn { color: var(--grey); }
.fav-btn.active { color: var(--purple-soft); }
.fav-btn.active svg { fill: var(--purple-soft); stroke: var(--purple-soft); }

/* PROGRESS */
.player-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.time-label {
  font-size: 0.7rem;
  color: var(--grey-dark);
  width: 30px;
  flex-shrink: 0;
}

.seek-bar {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 3px;
  border-radius: var(--radius-full);
  background: var(--border);
  outline: none;
  cursor: pointer;
  accent-color: var(--purple);
}

.seek-bar::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--purple);
  box-shadow: 0 0 8px var(--purple-glow);
  cursor: pointer;
}

/* CONTROLS */
.player-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ctrl-btn { color: var(--grey); width: 36px; height: 36px; }
.ctrl-btn:hover { color: var(--white); }
.ctrl-btn.active { color: var(--purple-soft); }

.play-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--purple);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  box-shadow: 0 0 20px var(--purple-glow);
}

.play-btn:hover  { background: var(--purple-soft); box-shadow: 0 0 30px rgba(123,0,255,0.4); }
.play-btn:active { transform: scale(0.93); }

/* ── BOTTOM NAV ────────────────────────────── */
.bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border);
  display: flex;
  z-index: 100;
}

.nav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: var(--grey-dark);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color var(--transition);
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.nav-btn svg { transition: transform var(--transition); }
.nav-btn:hover  { color: var(--grey); }
.nav-btn.active { color: var(--purple-soft); }
.nav-btn.active svg { transform: scale(1.1); }

/* ── PROFILE VIEW ──────────────────────────── */
.profile-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding-top: 32px;
  text-align: center;
}

.profile-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--purple);
  box-shadow: 0 0 30px var(--purple-glow);
}

.profile-name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
}

.profile-email { font-size: 0.85rem; color: var(--grey); }

.btn-outline {
  margin-top: 16px;
  padding: 10px 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--grey);
  transition: border-color var(--transition), color var(--transition);
}

.btn-outline:hover { border-color: var(--purple); color: var(--white); }

/* ── TOAST ─────────────────────────────────── */
.toast {
  position: fixed;
  bottom: calc(var(--nav-h) + var(--player-h) + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: var(--surface2);
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  white-space: nowrap;
  z-index: 200;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── UTILITÁRIOS ───────────────────────────── */
.hidden { display: none !important; }

/* ── RESPONSIVO (tablet+) ───────────────────── */
@media (min-width: 600px) {
  .recent-grid { grid-template-columns: repeat(3, 1fr); }

  .main-content { max-width: 680px; margin: 0 auto; }
}

/* ── REDUCED MOTION ────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}