/* Основные переменные цветовой схемы */
:root {
  --bg: #000000;
  --accent: #FFFFFF;
  --text: #FFFFFF;
  --card: #1a1a1a;
  --hover: #333333;
  --error: #999999;
  --success: #FFFFFF;
  --shadow: rgba(255, 255, 255, 0.3);
}

/* Сброс стилей и базовые настройки */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', 'Poppins', sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Ссылки */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover,
a:focus {
  color: #bfbfbf;
  outline: none;
}

/* Кнопки */
button,
.btn-logout,
.btn-create-playlist {
  background-color: var(--accent);
  border: none;
  border-radius: 24px;
  color: var(--bg);
  padding: 10px 24px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 0 12px var(--accent);
}

button:hover,
.btn-logout:hover,
.btn-create-playlist:hover {
  background-color: #bfbfbf;
  box-shadow: 0 0 24px #bfbfbf;
}

button:focus,
.btn-logout:focus,
.btn-create-playlist:focus {
  outline: 2px solid #bfbfbf;
  outline-offset: 2px;
}

/* Формы */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="file"],
input[type="range"],
select,
textarea {
  background-color: var(--card);
  border: 1px solid #666666;
  border-radius: 12px;
  color: var(--text);
  padding: 10px 16px;
  font-size: 1rem;
  width: 100%;
  transition: border-color 0.3s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="file"]:focus,
input[type="range"]:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  outline: none;
}

/* Верхняя панель навигации */
.top-nav {
  background-color: var(--bg);
  box-shadow: 0 2px 8px var(--shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  cursor: pointer;
  position: relative;
  user-select: none;
}

.search-bar input {
  width: 300px;
  max-width: 80vw;
  border-radius: 24px;
  padding: 8px 16px;
  font-size: 1rem;
}

/* Иконки в верхней панели */
.nav-icons a {
  display: inline-block;
  margin-left: 20px;
  cursor: pointer;
}

.nav-icons img {
  width: 28px;
  height: 28px;
  transition: filter 0.3s ease;
}

.nav-icons img:hover,
.nav-icons img:focus {
  filter: invert(70%) brightness(130%);
  outline: none;
}

/* Контейнеры и секции */
main {
  max-width: 1200px;
  margin: 24px auto;
  padding: 0 16px 80px; /* Отступ снизу для плеера */
}

/* Стили разделов */
section {
  margin-bottom: 40px;
}

h2 {
  margin-bottom: 16px;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--accent);
}

/* Слайдер треков */
.track-slider {
  display: flex;
  overflow-x: auto;
  gap: 16px;
  padding-bottom: 30px;
  padding-top: 20px;
  padding-left: 25px;
  padding-right: 25px;
}

.track-slider::-webkit-scrollbar {
  height: 8px;
}

.track-slider::-webkit-scrollbar-thumb {
  background-color: var(--accent);
  border-radius: 4px;
}

.track-slider::-webkit-scrollbar-track {
  background: var(--hover);
  border-radius: 4px;
}

/* Карточки треков */
.track-card {
  background-color: var(--card);
  border-radius: 24px;
  box-shadow: 0 2px 8px var(--shadow);
  width: 170px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  user-select: none;
  margin-left: 10px;
}

.track-card:hover,
.track-card:focus {
  transform: scale(1.05);
  box-shadow: 0 4px 24px var(--accent);
  outline: none;
}

.track-card img {
  width: 100%;
  height: 170px;
  border-radius: 24px 24px 0 0;
  object-fit: cover;
}

.track-title {
  margin-top: 12px;
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  color: var(--text);
}

.track-artist {
  font-size: 0.875rem;
  color: #ccc;
  margin-bottom: 12px;
  text-align: center;
}

/* Список треков */
.track-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.track-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--card);
  padding: 8px 16px;
  border-radius: 12px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.track-list-item:hover,
.track-list-item:focus {
  background-color: var(--hover);
  outline: none;
}

.track-list-item img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  object-fit: cover;
  filter: grayscale(0.9);
}

.track-list-item span {
  color: var(--text);
  font-size: 1rem;
}

/* Музыкальный плеер */
.audio-player {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--card);
  box-shadow: 0 -2px 16px var(--shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 32px;
  transition: background 0.5s ease;
  z-index: 50;
}

.track-info {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.player-cover {
  width: 54px;
  height: 54px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 0 8px var(--accent);
}

.track-text {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.track-title {
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 90%;
}

.track-artist {
  font-size: 0.875rem;
  color: #ccc;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 90%;
}

.player-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 28px;
}
}

.player-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background-color: var(--accent);
  color: var(--bg);
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 0 20px var(--accent);
  transition: filter 0.3s ease;
}

.player-btn:hover,
.player-btn:focus {
  filter: brightness(1.1);
  outline: none;
}

.like-btn {
  font-size: 1.2rem;
  color: #999999;
  background-color: transparent;
  box-shadow: none;
  height: 42px;
}

.like-btn:hover,
.like-btn:focus {
  color: #cccccc;
  filter: none;
  outline: none;
}

/* Индикатор прогресса */
.progress-bar {
  flex-grow: 2;
  margin: 0 12px;
  height: 6px;
  border-radius: 3px;
  appearance: none;
  background: #666666;
  cursor: pointer;
}

.progress-bar::-webkit-slider-thumb {
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
  margin-top: -4px;
}

.progress-bar::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
}

/* Контроль громкости */
.volume-control {
  width: 100px;
  cursor: pointer;
}

/* Автономные контейнеры */
.auth-container {
  max-width: 400px;
  margin: 80px auto;
  background-color: var(--card);
  padding: 32px;
  border-radius: 24px;
  box-shadow: 0 4px 24px var(--shadow);
  text-align: center;
}

.auth-container h2 {
  margin-bottom: 24px;
  color: var(--accent);
}

/* Ошибки и успех */
.error {
  background-color: #555555;
  color: var(--text);
  padding: 12px;
  border-radius: 12px;
  margin-bottom: 16px;
  font-weight: 600;
}

.success {
  background-color: #bbbbbb;
  color: var(--bg);
  padding: 12px;
  border-radius: 12px;
  margin-bottom: 16px;
  font-weight: 600;
}

/* Профиль пользователя */
.profile-container {
  max-width: 900px;
  margin: 48px auto;
  padding: 0 16px 80px;
}

.user-info,
.user-playlists,
.user-favorites {
  background-color: var(--card);
  padding: 24px;
  border-radius: 24px;
  margin-bottom: 32px;
  box-shadow: 0 4px 24px var(--shadow);
}

.avatar-container {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 20px var(--accent);
  filter: grayscale(1);
}

/* Плейлисты */
.playlist-list {
  list-style: none;
  padding-left: 0;
  margin: 0 0 16px 0;
}

.playlist-item {
  padding: 12px 16px;
  border-radius: 16px;
  background: var(--hover);
  margin-bottom: 12px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  user-select: none;
}

.playlist-item:hover,
.playlist-item:focus {
  background-color: var(--accent);
  color: var(--bg);
  outline: none;
}

.btn-create-playlist {
  display: inline-block;
}

/* Таблицы (админка) */
table {
  width: 100%;
  border-collapse: collapse;
  color: var(--text);
}

th,
td {
  padding: 12px 16px;
  border: 1px solid #444444;
}

th {
  background-color: var(--hover);
  font-weight: 700;
  cursor: pointer;
  user-select: none;
}

tr:nth-child(even) {
  background-color: #262626;
}

/* Модальные и алерты */
.success,
.error {
  text-align: center;
  font-weight: bold;
}

/* Ripple effect на логотип */
.ripple {
  position: relative;
  overflow: hidden;
}

.ripple:after {
  content: "";
  position: absolute;
  border-radius: 50%;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  pointer-events: none;
  background: radial-gradient(circle, rgba(255,255,255,0.5) 10%, transparent 10.01%);
  background-repeat: no-repeat;
  background-position: 50%;
  transform: scale(10, 10);
  opacity: 0;
  transition: transform 0.5s, opacity 1s;
}

.ripple:active:after {
  transform: scale(0, 0);
  opacity: 0.3;
  transition: 0s;
}

/* Медиазапросы для адаптивности */
@media (max-width: 1024px) {
  .track-slider {
    gap: 8px;
  }
  .audio-player {
    padding: 8px 16px;
  }
  .search-bar input {
    width: 220px;
  }
  .player-controls {
  margin-left: 0px !important;
  }
}

@media (max-width: 600px) {
  .top-nav {
    flex-direction: column;
    gap: 0px;
    padding: 8px 16px;
  }
  .logo {
    margin-bottom: 8px;
  }
  .audio-player {
    flex-direction: column;
    padding: 12px;
    gap: 12px;
  }
  .track-info {
    justify-content: center;
  }
  .track-title,
  .track-artist {
    max-width: 100%;
    text-align: center;
  }
  .like-btn {
  font-size: 1.2rem;
  height: 20px;
  display: none;
  }
}