:root {
    --bg-main: #0f111a;
    --bg-secondary: rgba(25, 28, 41, 0.6);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --border-color: rgba(255, 255, 255, 0.08);
    --glass-bg: rgba(15, 17, 26, 0.7);
    --glass-border: 1px solid rgba(255, 255, 255, 0.05);
    
    /* Icon Colors */
    --icon-folder: #cbd5e1;
    --icon-zip: #f59e0b;
    --icon-audio: #10b981;
    --icon-image: #8b5cf6;
    --icon-jar: #ef4444;
    --icon-default: #94a3b8;
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    min-height: 100vh;
    overflow: hidden;
    background-color: var(--bg-main);
}

#particles-js {
    position: fixed;
    width: 100vw;
    height: 100vh;
    top: 0;
    left: 0;
    z-index: 0;
    pointer-events: none;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-right: var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    z-index: 10;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 2.5rem;
    color: #fff;
    letter-spacing: 0.5px;
}

.brand i {
    color: var(--accent);
    font-size: 1.5rem;
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-weight: 500;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(59, 130, 246, 0.15);
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: linear-gradient(180deg, #ff0040, #ff8800, #00ffcc, #aa00ff, #ff0040);
    background-size: 100% 400%;
    animation: rgbAnimationVertical 6s ease-in-out infinite;
    box-shadow: 0 0 10px rgba(0, 255, 204, 0.5);
}

.sidebar-footer {
    padding-top: 1.5rem;
    border-top: var(--glass-border);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    color: var(--text-primary);
}

.dot {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: rgba(15, 17, 26, 0.4);
}

/* Topbar */
.topbar {
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: var(--glass-border);
}

.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
}

.breadcrumbs a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.breadcrumbs a:hover {
    color: var(--text-primary);
}

.breadcrumbs .separator {
    color: var(--border-color);
    margin: 0 4px;
}

.breadcrumbs .current {
    color: var(--text-primary);
    font-weight: 500;
}

.search-bar {
    position: relative;
    width: 250px;
}

.search-bar i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-bar input {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 10px 14px 10px 40px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.08);
}

/* Explorer */
.explorer {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1.5rem 2rem;
    overflow: hidden;
}

.explorer-header {
    display: flex;
    padding: 0.75rem 1.5rem;
    border-bottom: var(--glass-border);
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.explorer-header .sortable {
    cursor: pointer;
    transition: color 0.2s;
    user-select: none;
    display: flex;
    align-items: center;
}

.explorer-header .sortable:hover {
    color: var(--text-primary);
}

.explorer-header .sortable i {
    margin-left: 6px;
    font-size: 0.9em;
    opacity: 0.5;
}

.explorer-header .sortable.active {
    color: var(--accent);
}

.explorer-header .sortable.active i {
    opacity: 1;
}

.col-name { flex: 2; min-width: 200px; display: flex; align-items: center; gap: 12px; }
.col-size { flex: 1; max-width: 150px; }
.col-date { flex: 1; max-width: 200px; }
.col-action { width: 50px; text-align: center; }

.explorer-body {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem 0;
}

.explorer-body::-webkit-scrollbar { width: 8px; }
.explorer-body::-webkit-scrollbar-track { background: transparent; }
.explorer-body::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.1); border-radius: 4px; }
.explorer-body::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.2); }

.file-row {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    transition: all 0.2s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    margin-bottom: 2px;
}

.file-row:hover {
    background: rgba(255, 255, 255, 0.04);
    transform: translateX(4px);
}

.file-row .col-name {
    color: var(--text-primary);
    font-weight: 500;
}

.file-row .col-size, 
.file-row .col-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.file-icon {
    font-size: 1.3rem;
    width: 28px;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
}

.icon-folder { color: var(--icon-folder); }
.icon-archive { color: var(--icon-zip); }
.icon-audio { color: var(--icon-audio); }
.icon-image { color: var(--icon-image); }
.icon-jar { color: var(--icon-jar); }
.icon-default { color: var(--icon-default); }

.download-btn {
    opacity: 0;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    text-decoration: none;
}

.file-row:hover .download-btn {
    opacity: 1;
}

.download-btn:hover {
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent-hover);
    transform: scale(1.05);
}

.back-row {
    background: transparent;
}
.back-row:hover {
    background: rgba(255, 255, 255, 0.02);
}
.back-row .col-name {
    color: var(--accent);
}

.loading-state, .empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
    gap: 1rem;
}

.empty-state i {
    font-size: 3.5rem;
    color: rgba(255, 255, 255, 0.1);
    margin-bottom: 0.5rem;
}

.empty-state h3 {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 1.25rem;
}

.spinner {
    width: 44px;
    height: 44px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: var(--accent);
    animation: spin 1s ease-in-out infinite;
}

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

/* Audio Player */
.audio-player-container {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(0);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--glass-border);
    border-radius: 16px;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    z-index: 100;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.audio-player-container.hidden {
    transform: translateX(-50%) translateY(150px);
    opacity: 0;
    pointer-events: none;
}

.audio-info {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 220px;
}

.audio-info i {
    font-size: 24px;
    color: var(--icon-audio);
    animation: bounceAudio 2s infinite ease-in-out;
}

@keyframes bounceAudio {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.audio-details {
    display: flex;
    flex-direction: column;
}

#audioTitle {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 250px;
}

#audioStatus {
    color: var(--icon-audio);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

audio {
    height: 40px;
    border-radius: 20px;
    outline: none;
}

.close-audio-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-audio-btn:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

/* Playable visual hint */
.file-row.playable:hover .col-name {
    color: var(--icon-audio);
}
.file-row.playable:hover .file-icon i {
    color: var(--icon-audio);
    transform: scale(1.1);
}
.file-icon i {
    transition: all 0.2s ease;
}

/* Media Viewer Modal */
.media-viewer-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(10, 12, 16, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 200;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.media-viewer-modal.hidden {
    opacity: 0;
    pointer-events: none;
}

.media-viewer-modal .viewer-content {
    position: relative;
    width: 90vw;
    max-width: 1200px;
    max-height: 90vh;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border-radius: 8px;
    overflow: hidden;
    transform: scale(1);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    background: rgba(15, 17, 26, 0.9);
}

.media-viewer-modal.hidden .viewer-content {
    transform: scale(0.9);
}

#viewerImage, #viewerVideo {
    display: block;
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
}

#viewerVideo {
    width: 100%;
}

#viewerText {
    width: 100%;
    height: 100%;
    max-height: 90vh;
    overflow: auto;
    padding: 2rem;
    color: #e2e8f0;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.95rem;
    line-height: 1.5;
    background: transparent;
    text-align: left;
    white-space: pre-wrap;
    word-break: break-all;
}

#viewerText.hidden, #viewerImage.hidden, #viewerVideo.hidden, #mediaLoader.hidden {
    display: none !important;
}

/* Custom Scrollbar for Text Viewer */
#viewerText::-webkit-scrollbar { width: 8px; height: 8px; }
#viewerText::-webkit-scrollbar-track { background: rgba(0,0,0,0.2); }
#viewerText::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.2); border-radius: 4px; }

.close-viewer-btn {
    position: absolute;
    top: 24px;
    right: 32px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 201;
}

.close-viewer-btn:hover {
    background: rgba(239, 68, 68, 0.8);
    transform: scale(1.1);
}

/* Viewable visual hint */
.file-row.viewable:hover .col-name {
    color: var(--icon-image);
}
.file-row.viewable:hover .file-icon i {
    color: var(--icon-image);
    transform: scale(1.1);
}

/* RGB Visual Effects */
/* Enhanced RGB Download Button Hover */
.file-row .download-btn:hover {
    background: linear-gradient(90deg, #ff0040, #ff8800, #00ffcc, #aa00ff, #ff0040);
    background-size: 400% 100%;
    animation: rgbAnimationHorizontal 3s ease-in-out infinite;
    color: #fff;
    transform: scale(1.15);
    box-shadow: 0 0 15px rgba(170, 0, 255, 0.6);
    border: none;
}

@keyframes rgbAnimationHorizontal {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes rgbAnimationVertical {
    0% { background-position: 50% 0%; }
    50% { background-position: 50% 100%; }
    100% { background-position: 50% 0%; }
}

/* Context Menu */
.context-menu {
    position: fixed;
    background: rgba(15, 17, 26, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
    border-radius: 8px;
    padding: 0.5rem 0;
    min-width: 210px;
    z-index: 10000;
    opacity: 1;
    transform: scale(1);
    transform-origin: top left;
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.context-menu.hidden {
    opacity: 0;
    transform: scale(0.95);
    pointer-events: none;
}

.context-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.context-menu li {
    padding: 10px 20px;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
}

.context-menu li:hover {
    background: rgba(59, 130, 246, 0.2);
    color: #fff;
}

.context-menu li i {
    width: 20px;
    text-align: center;
    color: var(--text-secondary);
}

.context-menu li:hover i {
    color: var(--accent-hover);
}

.context-menu hr {
    border: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: 5px 0;
}