/* ==========================================================================
   SpotiZip Design System - Minimal Modern Glassmorphism Theme
   ========================================================================== */

:root {
    /* Color Palette */
    --bg-dark: #090c13;
    --bg-surface: rgba(18, 24, 38, 0.7);
    --bg-surface-border: rgba(255, 255, 255, 0.08);
    --bg-glass-hover: rgba(255, 255, 255, 0.06);
    
    /* Brand Accents */
    --spotify-green: #1db954;
    --spotify-glow: rgba(29, 185, 84, 0.35);
    --cyan-accent: #00f2fe;
    --gradient-brand: linear-gradient(135deg, #1db954 0%, #00f2fe 100%);
    --gradient-glow: linear-gradient(135deg, rgba(29, 185, 84, 0.2) 0%, rgba(0, 242, 254, 0.2) 100%);
    
    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Status Colors */
    --status-success: #10b981;
    --status-warning: #f59e0b;
    --status-error: #ef4444;
    --status-info: #3b82f6;

    /* Radii & Shadows */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --shadow-glass: 0 20px 40px -15px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    --shadow-glow: 0 0 30px var(--spotify-glow);
    
    /* Transitions */
    --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Custom Scrollbars (Global & Inner Containers) */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(10, 15, 25, 0.6);
    border-radius: 9999px;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.18);
    border-radius: 9999px;
    border: 2px solid transparent;
    background-clip: content-box;
    transition: background 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--spotify-green);
    border: 2px solid transparent;
    background-clip: content-box;
}

::-webkit-scrollbar-corner {
    background: transparent;
}

* {
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.2) rgba(10, 15, 25, 0.6);
}

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

/* Ambient Background Glow */
.ambient-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.35;
    animation: floatOrb 20s ease-in-out infinite alternate;
}

.orb-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: var(--spotify-green);
}

.orb-2 {
    bottom: -10%;
    right: -10%;
    width: 45vw;
    height: 45vw;
    background: #00f2fe;
    animation-delay: -10s;
}

@keyframes floatOrb {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(60px, 40px) scale(1.1); }
    100% { transform: translate(-40px, 80px) scale(0.95); }
}

/* Layout Container */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header & Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 28px;
    background: rgba(18, 24, 38, 0.4);
    backdrop-filter: blur(16px);
    border: 1px solid var(--bg-surface-border);
    border-radius: var(--radius-full);
    margin-bottom: 40px;
}

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

.logo-icon {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #000;
    box-shadow: 0 0 15px var(--spotify-glow);
}

.brand-name {
    font-family: 'Outfit', sans-serif;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.brand-name .highlight {
    color: var(--spotify-green);
}

.badge-tag {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
}

.system-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--status-success);
    box-shadow: 0 0 10px var(--status-success);
    animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.85); }
}

/* Glass Panel Styling */
.glass-panel {
    background: var(--bg-surface);
    backdrop-filter: blur(20px);
    border: 1px solid var(--bg-surface-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glass);
    transition: var(--transition-smooth);
}

/* Hero Section */
.hero-section {
    text-align: center;
    max-width: 760px;
    margin: 20px auto 48px auto;
}

.hero-title {
    font-family: 'Outfit', sans-serif;
    font-size: 48px;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 14px;
}

.gradient-text {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* URL Input Bar */
.url-card {
    padding: 10px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-radius: var(--radius-full);
    background: rgba(18, 24, 38, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.input-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 12px;
    padding-left: 18px;
}

.input-icon {
    font-size: 20px;
    color: var(--text-muted);
}

#playlistUrl {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 400;
}

#playlistUrl::placeholder {
    color: var(--text-muted);
}

.btn-clear {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
    padding: 4px;
    transition: var(--transition-fast);
}

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

.action-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Button Variants */
.btn-primary, .btn-secondary, .btn-download-main, .btn-primary-action, .btn-secondary-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 14px;
    border-radius: var(--radius-full);
    padding: 12px 24px;
    cursor: pointer;
    border: none;
    transition: var(--transition-smooth);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-brand);
    color: #000;
    box-shadow: 0 4px 20px var(--spotify-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(29, 185, 84, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.07);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
}

.btn-download-main {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    background: var(--gradient-brand);
    color: #000;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 25px var(--spotify-glow);
}

.btn-download-main:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(29, 185, 84, 0.5);
}

.btn-primary-action {
    background: var(--gradient-brand);
    color: #000;
}

.btn-secondary-action {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

/* Spinner */
.spinner {
    width: 18px;
    height: 18px;
    border: 2.5px solid rgba(0, 0, 0, 0.2);
    border-top-color: #000;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Error Banner */
.error-banner {
    margin-top: 16px;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.btn-close-error {
    margin-left: auto;
    background: transparent;
    border: none;
    color: #fca5a5;
    cursor: pointer;
    font-size: 18px;
}

/* Dashboard Grid Layout */
.dashboard-grid {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 24px;
    align-items: start;
}

/* Playlist Meta Card */
.playlist-meta-card {
    padding: 24px;
}

.meta-cover-container {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    margin-bottom: 20px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    background: #111;
}

.meta-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.meta-type-chip {
    font-size: 12px;
    font-weight: 600;
    color: var(--spotify-green);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
    display: block;
}

.playlist-title {
    font-family: 'Outfit', sans-serif;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
    word-break: break-word;
}

.meta-stats {
    display: flex;
    gap: 16px;
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--bg-surface-border);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}

/* Configuration Section */
.config-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

.config-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.config-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.segmented-control {
    display: flex;
    background: rgba(0, 0, 0, 0.3);
    padding: 4px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--bg-surface-border);
}

.segment {
    flex: 1;
    padding: 8px;
    font-size: 12px;
    font-weight: 600;
    border: none;
    background: transparent;
    color: var(--text-muted);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.segment.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.path-input-group input {
    width: 100%;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--bg-surface-border);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
}

.path-input-group input:focus {
    border-color: var(--spotify-green);
}

/* Tracks Card & Table */
.tracks-card {
    padding: 24px;
}

.tracks-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.tracks-title-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.tracks-title-group h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 20px;
    font-weight: 600;
}

.tracks-count-badge {
    font-size: 12px;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
}

.overall-status-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.05);
    font-size: 13px;
    color: var(--text-secondary);
}

.chip-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

/* Progress Container */
.progress-container {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--bg-surface-border);
    border-radius: var(--radius-md);
    padding: 18px;
    margin-bottom: 20px;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 10px;
}

.percent-text {
    color: var(--spotify-green);
    font-weight: 700;
}

.progress-bar-track {
    height: 8px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background: var(--gradient-brand);
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.download-subtext {
    font-size: 12px;
    color: var(--text-muted);
}

/* Track Table */
.track-list-wrapper {
    max-height: 480px;
    overflow-y: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--bg-surface-border);
}

.track-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 14px;
}

.track-table th {
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.4);
    color: var(--text-muted);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    position: sticky;
    top: 0;
    z-index: 2;
}

.track-table td {
    padding: 14px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.track-table tbody tr {
    transition: var(--transition-fast);
}

.track-table tbody tr:hover {
    background: var(--bg-glass-hover);
}

.track-title-cell {
    font-weight: 500;
    color: var(--text-primary);
}

.track-artist-cell {
    color: var(--text-secondary);
}

.track-duration-cell {
    color: var(--text-muted);
    font-size: 13px;
}

/* Status Badges in Table */
.badge-queued {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--text-muted);
}

.badge-downloading {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--cyan-accent);
    font-weight: 500;
}

.badge-done {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--spotify-green);
    font-weight: 600;
}

.badge-error {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--status-error);
}

/* Completion Box */
.completion-box {
    margin-top: 20px;
    padding: 20px;
    background: rgba(29, 185, 84, 0.08);
    border: 1px solid rgba(29, 185, 84, 0.3);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 16px;
}

.completion-icon {
    font-size: 32px;
    color: var(--spotify-green);
}

.completion-details h4 {
    font-size: 16px;
    font-weight: 600;
}

.completion-details p {
    font-size: 13px;
    color: var(--text-secondary);
}

.completion-actions {
    margin-left: auto;
    display: flex;
    gap: 10px;
}

/* Footer */
.footer {
    margin-top: auto;
    padding-top: 40px;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

/* Utility Helpers */
.hidden {
    display: none !important;
}

/* Responsive adjustments */
@media (max-width: 900px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    .hero-title {
        font-size: 34px;
    }
    .url-card {
        flex-direction: column;
        border-radius: var(--radius-md);
        padding: 14px;
    }
    .action-buttons {
        width: 100%;
        justify-content: flex-end;
    }
}