/* style.css - Tema CLARO estilo Spotify Light */
:root {
    --spotify-green: #1DB954;
    --spotify-black: #191414;
    --bg-primary: #f9f9f9;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --border-color: #e1e8ed;
    --hover-color: #f4f4f4;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Circular', 'Helvetica Neue', sans-serif;
    background: var(--bg-primary);
    min-height: 100vh;
    color: var(--text-primary);
}

/* Contenedor principal */
.container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
    margin: 0 auto;
}

/* Tarjeta de login */
.login-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 40px 30px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-top: 50px;
}

/* Logo */
.logo {
    text-align: center;
    margin-bottom: 30px;
}

.logo h1 {
    color: var(--text-primary);
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--spotify-green);
}

.logo p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 10px;
}

/* Formulario */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 15px;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--spotify-green);
    background: var(--bg-card);
    box-shadow: 0 0 0 3px rgba(29, 185, 84, 0.1);
}

.form-group input::placeholder {
    color: #bdc3c7;
}

/* Botón */
.btn-login {
    width: 100%;
    padding: 14px;
    background: var(--spotify-green);
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.btn-login:hover {
    background: #1ed760;
    transform: scale(1.02);
    box-shadow: 0 5px 15px rgba(29, 185, 84, 0.3);
}

/* Footer */
.spotify-footer {
    text-align: center;
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.spotify-footer p {
    color: var(--text-secondary);
    font-size: 12px;
}

.spotify-footer a {
    color: var(--spotify-green);
    text-decoration: none;
    font-weight: 500;
}

.spotify-footer a:hover {
    text-decoration: underline;
}

/* Mensajes */
.error-message {
    background: #fee;
    border-left: 3px solid #e74c3c;
    color: #c0392b;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.success-message {
    background: #e8f8f5;
    border-left: 3px solid var(--spotify-green);
    color: #27ae60;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

/* Loading */
.loading {
    display: none;
    text-align: center;
    margin-top: 15px;
}

.loading-spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--spotify-green);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ====================================
   DASHBOARD - Reproductor
   ==================================== */

.dashboard {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-name {
    color: var(--text-primary);
    font-weight: 500;
    background: var(--bg-primary);
    padding: 8px 16px;
    border-radius: 20px;
}

.btn-logout {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 20px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    font-size: 14px;
}

.btn-logout:hover {
    border-color: var(--spotify-green);
    color: var(--spotify-green);
    background: white;
}

/* Layout principal del reproductor */
.player-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 20px;
    margin-top: 20px;
}

/* Sidebar - Listas de reproducción */
.sidebar {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    height: fit-content;
}

.sidebar h3 {
    color: var(--text-primary);
    margin-bottom: 20px;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.playlist-item {
    padding: 12px 15px;
    margin-bottom: 5px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-primary);
    font-weight: 500;
}

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

.playlist-item.active {
    background: var(--spotify-green);
    color: white;
}

/* Contenido principal */
.main-content {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 30px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

/* Lista de canciones */
.songs-list {
    margin-top: 20px;
}

.song-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 5px;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.song-item:hover {
    background: var(--hover-color);
    border-color: var(--border-color);
}

.song-item.playing {
    background: #e8f8f5;
    border-color: var(--spotify-green);
}

.song-cover {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 8px;
    margin-right: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.song-info {
    flex: 1;
}

.song-title {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 4px;
}

.song-artist {
    color: var(--text-secondary);
    font-size: 13px;
}

.song-duration {
    color: var(--text-secondary);
    font-size: 13px;
    margin-right: 15px;
}

/* Barra de reproducción inferior */
.player-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 20px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.05);
}

.now-playing {
    display: flex;
    align-items: center;
    gap: 15px;
    width: 300px;
}

.now-playing-cover {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 8px;
}

.now-playing-info h4 {
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 4px;
}

.now-playing-info p {
    color: var(--text-secondary);
    font-size: 12px;
}

.player-controls {
    display: flex;
    gap: 20px;
    align-items: center;
}

.control-btn {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-primary);
    transition: all 0.2s;
}

.control-btn:hover {
    color: var(--spotify-green);
    transform: scale(1.1);
}

.control-btn.play {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--spotify-green);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn.play:hover {
    background: #1ed760;
    transform: scale(1.05);
}

.progress-area {
    width: 500px;
}

.progress-bar {
    width: 100%;
    height: 5px;
    background: #e0e0e0;
    border-radius: 5px;
    cursor: pointer;
    margin-bottom: 5px;
}

.progress {
    height: 100%;
    background: var(--spotify-green);
    border-radius: 5px;
    width: 30%;
}

.time-info {
    display: flex;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 12px;
}

.volume-control {
    width: 150px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.volume-slider {
    width: 100px;
    height: 5px;
    background: #e0e0e0;
    border-radius: 5px;
    cursor: pointer;
}

/* Welcome card temporal */
.welcome-card {
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    border-radius: 12px;
    padding: 60px 40px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.welcome-card h2 {
    color: var(--text-primary);
    font-size: 36px;
    margin-bottom: 20px;
}

.welcome-card p {
    color: var(--text-secondary);
    font-size: 18px;
    margin-bottom: 30px;
}

.construction {
    display: inline-block;
    background: var(--spotify-green);
    color: white;
    padding: 12px 30px;
    border-radius: 25px;
    font-weight: 600;
    margin-top: 20px;
    box-shadow: 0 5px 15px rgba(29, 185, 84, 0.2);
}

/* Responsive */
@media (max-width: 768px) {
    .player-container {
        grid-template-columns: 1fr;
    }
    
    .player-bar {
        flex-direction: column;
        gap: 15px;
        padding: 15px;
    }
    
    .progress-area {
        width: 100%;
    }
}