/* ====================================
   SONG SELECTOR - Styles
   Modern dark theme for music app
   ==================================== */

/* CSS Variables */
:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(20, 20, 30, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.05);

    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;

    --accent-primary: #8b5cf6;
    --accent-secondary: #a78bfa;
    --accent-glow: rgba(139, 92, 246, 0.4);

    --success: #22c55e;
    --success-glow: rgba(34, 197, 94, 0.3);
    --danger: #ef4444;
    --danger-glow: rgba(239, 68, 68, 0.3);
    --warning: #f59e0b;

    --star-inactive: #3a3a4a;
    --star-active: #fbbf24;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50%;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--accent-glow);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Disable selection for protection */
body.protected {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* Background Animation */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #ec4899, #8b5cf6);
    bottom: -50px;
    left: -50px;
    animation-delay: -7s;
}

.orb-3 {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, #06b6d4, #8b5cf6);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(30px, -30px) scale(1.05);
    }

    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }

    75% {
        transform: translate(-30px, -20px) scale(1.02);
    }
}

/* ====================================
   LOGIN PAGE
   ==================================== */

.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.logo-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

.logo-icon svg {
    width: 40px;
    height: 40px;
    color: white;
}

.login-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--text-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-header .subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Form Styles */
.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.input-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.input-wrapper input {
    width: 100%;
    padding: var(--spacing-md);
    padding-left: 48px;
    background: var(--bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.input-wrapper input::placeholder {
    color: var(--text-muted);
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-wrapper input:focus+.input-icon,
.input-wrapper:focus-within .input-icon {
    color: var(--accent-primary);
}

/* Buttons */
.btn-primary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 52px;
}

.btn-primary svg {
    width: 20px;
    height: 20px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Error Message */
.error-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--danger-glow);
    border: 1px solid var(--danger);
    border-radius: var(--radius-md);
    color: var(--danger);
    font-size: 0.875rem;
}

.error-message svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* Footer */
.login-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--text-secondary);
}

.loader-ring {
    width: 48px;
    height: 48px;
    border: 3px solid var(--bg-glass);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

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

.player-page {
    padding-bottom: var(--spacing-2xl);
}

/* Header */
.player-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.user-name {
    font-weight: 500;
    font-size: 0.9rem;
}

.progress-indicator {
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: var(--bg-glass);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
}

.btn-logout {
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-logout svg {
    width: 20px;
    height: 20px;
}

.btn-logout:hover {
    background: var(--danger-glow);
    border-color: var(--danger);
    color: var(--danger);
}

/* Player Container */
.player-container {
    max-width: 480px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* Now Playing Card */
.now-playing-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.album-art {
    position: relative;
    width: 180px;
    height: 180px;
    margin: 0 auto var(--spacing-lg);
}

.vinyl-disc {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a2e 0%, #0f0f1a 100%);
    border-radius: var(--radius-full);
    position: relative;
    box-shadow:
        0 0 0 3px rgba(255, 255, 255, 0.1),
        0 0 30px rgba(0, 0, 0, 0.5),
        inset 0 0 60px rgba(139, 92, 246, 0.1);
    transition: transform 0.5s ease;
}

.vinyl-disc::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    height: 90%;
    border-radius: var(--radius-full);
    background: repeating-radial-gradient(circle at center,
            transparent 0px,
            transparent 2px,
            rgba(255, 255, 255, 0.03) 2px,
            rgba(255, 255, 255, 0.03) 4px);
}

.vinyl-disc.spinning {
    animation: vinyl-spin 3s linear infinite;
}

@keyframes vinyl-spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.vinyl-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-glow);
}

.vinyl-center::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    background: var(--bg-primary);
    border-radius: var(--radius-full);
}

.play-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.album-art:hover .play-indicator {
    opacity: 1;
}

.play-indicator svg {
    width: 28px;
    height: 28px;
    color: white;
    margin-left: 4px;
}

/* Track Info */
.track-info {
    margin-bottom: var(--spacing-lg);
}

.track-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.track-number {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Audio Progress */
.audio-progress {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.time-current,
.time-total {
    font-size: 0.75rem;
    color: var(--text-secondary);
    min-width: 36px;
}

.progress-bar-container {
    flex: 1;
    height: 6px;
    background: var(--bg-glass);
    border-radius: var(--radius-full);
    position: relative;
    cursor: pointer;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-full);
    width: 0%;
    transition: width 0.1s linear;
}

.progress-handle {
    position: absolute;
    top: 50%;
    left: 0%;
    transform: translate(-50%, -50%);
    width: 14px;
    height: 14px;
    background: white;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.progress-bar-container:hover .progress-handle {
    opacity: 1;
}

/* Audio Controls */
.audio-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.btn-control {
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-control svg {
    width: 28px;
    height: 28px;
}

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

.btn-play {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-full);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-play svg {
    width: 32px;
    height: 32px;
}

.btn-play:hover {
    color: white;
    transform: scale(1.05);
}

/* Volume Control */
.volume-control {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.volume-icon {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
}

.volume-slider {
    width: 100px;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-glass);
    border-radius: var(--radius-full);
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
}

.volume-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--accent-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
    border: none;
}

/* ====================================
   RATING SECTION
   ==================================== */

.rating-section {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

/* Quick Rating (Like/Dislike) */
.rating-quick {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.btn-like,
.btn-dislike {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-glass);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 80px;
}

.btn-like svg,
.btn-dislike svg {
    width: 28px;
    height: 28px;
}

.btn-like span,
.btn-dislike span {
    font-size: 0.8rem;
    font-weight: 500;
}

.btn-like:hover,
.btn-like.active {
    background: var(--success-glow);
    border-color: var(--success);
    color: var(--success);
}

.btn-like.active svg {
    fill: var(--success);
}

.btn-dislike:hover,
.btn-dislike.active {
    background: var(--danger-glow);
    border-color: var(--danger);
    color: var(--danger);
}

.btn-dislike.active svg {
    fill: var(--danger);
}

/* Detailed Ratings */
.rating-detailed {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.rating-category {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.rating-category label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.star-rating {
    display: flex;
    gap: 2px;
}

.star {
    font-size: 1.5rem;
    color: var(--star-inactive);
    cursor: pointer;
    transition: all var(--transition-fast);
    line-height: 1;
}

.star:hover,
.star.active {
    color: var(--star-active);
    transform: scale(1.1);
}

.star.hover {
    color: var(--star-active);
}

.rating-value {
    font-size: 0.75rem;
    color: var(--accent-secondary);
    font-weight: 600;
    min-width: 24px;
    text-align: center;
    align-self: flex-start;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-glass);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-xs);
}

/* Comments */
.comments-section {
    margin-bottom: var(--spacing-xl);
}

.comments-section label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.comments-section textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    resize: vertical;
    min-height: 80px;
    transition: all var(--transition-fast);
}

.comments-section textarea::placeholder {
    color: var(--text-muted);
}

.comments-section textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Save Button */
.btn-save {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--success), #16a34a);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 52px;
}

.btn-save svg {
    width: 20px;
    height: 20px;
}

.btn-save:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--success-glow);
}

.btn-save:active {
    transform: translateY(0);
}

.btn-save:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ====================================
   MODAL
   ==================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-lg);
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    max-width: 360px;
    width: 100%;
}

.modal-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-icon.success {
    background: var(--success-glow);
}

.modal-icon.success svg {
    width: 40px;
    height: 40px;
    color: var(--success);
}

.modal-content h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.modal-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.modal-content .subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

/* ====================================
   TOAST NOTIFICATION
   ==================================== */

.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    animation: slideUp 0.3s ease;
}

.toast.success {
    border-color: var(--success);
}

.toast.error {
    border-color: var(--danger);
}

@keyframes slideUp {
    from {
        transform: translateX(-50%) translateY(100%);
        opacity: 0;
    }

    to {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
}

/* ====================================
   RESPONSIVE
   ==================================== */

@media (max-width: 480px) {
    .login-card {
        padding: var(--spacing-lg);
    }

    .logo-icon {
        width: 60px;
        height: 60px;
    }

    .logo-icon svg {
        width: 32px;
        height: 32px;
    }

    .login-header h1 {
        font-size: 1.5rem;
    }

    .player-container {
        padding: var(--spacing-md);
    }

    .now-playing-card,
    .rating-section {
        padding: var(--spacing-lg);
    }

    .album-art {
        width: 150px;
        height: 150px;
    }

    .audio-controls {
        gap: var(--spacing-md);
    }

    .btn-play {
        width: 56px;
        height: 56px;
    }

    .btn-play svg {
        width: 28px;
        height: 28px;
    }

    .star {
        font-size: 1.25rem;
    }

    .btn-like,
    .btn-dislike {
        min-height: 70px;
    }
}

@media (min-width: 768px) {
    .rating-category {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }

    .star-rating {
        order: 0;
    }

    .rating-value {
        margin-top: 0;
    }
}

/* High contrast for accessibility */
@media (prefers-contrast: high) {
    :root {
        --bg-glass: rgba(255, 255, 255, 0.15);
        --text-secondary: #c0c0d0;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .vinyl-disc.spinning {
        animation: none;
    }
}