:root {
    --bg-dark: #f8fafc;
    --panel-bg: rgba(255, 255, 255, 0.9);
    --panel-border: rgba(148, 163, 184, 0.25);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-glow: rgba(59, 130, 246, 0.25);
    --font-main: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    position: relative;
    overflow-x: hidden;
}

.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.glow-orb {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 20s infinite ease-in-out alternate;
}

.orb-1 {
    top: -200px;
    left: -100px;
    background: radial-gradient(circle, #3b82f6, transparent 70%);
}

.orb-2 {
    bottom: -200px;
    right: -100px;
    background: radial-gradient(circle, #8b5cf6, transparent 70%);
    animation-delay: -10s;
}

@keyframes float {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(100px, 50px);
    }
}

.container {
    width: 100%;
    max-width: 1200px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

header {
    text-align: center;
    margin-bottom: 1rem;
}

header h1 {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 0.5rem;
}

header h1 span {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.dashboard {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
    gap: 2rem;
    align-items: flex-start;
}

.dashboard > * {
    min-width: 0;
}

.video-list-section,
.player-section,
.folder-header {
    min-width: 0;
}

.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 20px 40px rgba(148, 163, 184, 0.15);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--panel-border);
    padding-bottom: 1rem;
}

.section-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.codec-panel {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.codec-panel label {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.codec-panel select {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 0.5rem 0.75rem;
    min-width: 110px;
    outline: none;
}

.codec-panel select:focus {
    border-color: var(--accent);
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 0.5rem;
    border-radius: 8px;
}

.icon-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.video-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 500px;
    overflow-y: auto;
    min-width: 0;
}

.video-list::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.video-list::-webkit-scrollbar-thumb {
    background: var(--panel-border);
    border-radius: 6px;
}

.video-item {
    padding: 1rem;
    border-radius: 12px;
    background: #ffffff;
    border: 1px solid rgba(148, 163, 184, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 0;
}

.video-item:hover {
    background: #f1f5f9;
    transform: translateY(-2px);
}

.video-item.active {
    background: rgba(59, 130, 246, 0.2);
    border-color: var(--accent);
    box-shadow: 0 0 15px var(--accent-glow);
}

.video-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}

.video-info {
    flex: 1;
    overflow: hidden;
    min-width: 0;
    max-width: 100%;
}

.video-title {
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    padding-bottom: 0.2rem;
}

.video-title::-webkit-scrollbar {
    height: 6px;
}

.video-title::-webkit-scrollbar-thumb {
    background: var(--panel-border);
    border-radius: 6px;
}

.video-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Folder tree styles */
.folder-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.folder-header {
    padding: 1rem;
    border-radius: 12px;
    background: #ffffff;
    border: 1px solid rgba(148, 163, 184, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 0;
}

.folder-header:hover {
    background: #f1f5f9;
}

.folder-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}

.folder-title {
    flex: 1;
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.folder-toggle {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.folder-toggle .chevron {
    transition: transform 0.3s ease;
}

.folder-item.open>.folder-header .folder-toggle .chevron {
    transform: rotate(180deg);
}

.sub-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-left: 1rem;
    margin-top: 0.25rem;
}

.player-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: #111827;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: inset 0 0 20px rgba(148, 163, 184, 0.2);
}

#video-player {
    width: 100%;
    height: 100%;
    object-fit: contain;
    outline: none;
}

.player-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    text-align: center;
    padding: 2rem;
    z-index: 10;
    transition: opacity 0.3s ease;
}

.player-overlay h3 {
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.player-overlay p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.now-playing {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--panel-border);
}

.now-playing h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.now-playing p {
    font-size: 1.25rem;
    font-weight: 600;
}

.progress-info {
    width: 100%;
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: stretch;
}

.progress-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.progress-bar {
    width: 100%;
    height: 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    overflow: hidden;
}

.progress-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-hover));
    transition: width 0.25s ease;
}

.play-btn {
    margin-top: 1rem;
    padding: 0.85rem 1.25rem;
    border: none;
    border-radius: 999px;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
}

.play-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.play-btn:disabled {
    opacity: 0.65;
    background: rgba(37, 99, 235, 0.5);
    cursor: not-allowed;
    transform: none;
}

.play-btn.hidden {
    display: none !important;
}

.hidden {
    display: none !important;
}

.spinner-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 0;
    gap: 1rem;
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: var(--accent);
    animation: spin 1s linear infinite;
}

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

/* Responsive adjustments */
@media (max-width: 900px) {
    .dashboard {
        grid-template-columns: 1fr;
    }

    .video-list-section {
        order: 2;
    }

    .player-section {
        order: 1;
    }
}