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

body {
    background: #000;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

#video-canvas {
    display: block;
    max-width: 100vw;
    max-height: 100vh;
    object-fit: contain;
}

#file-transfer-btn {
    position: fixed;
    top: 10px;
    right: 10px;
    z-index: 100;
    padding: 8px 16px;
    background: rgba(0, 120, 215, 0.9);
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.2s;
}

#file-transfer-btn:hover {
    background: rgba(0, 120, 215, 1);
}

#file-panel {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    width: 90%;
    max-width: 900px;
    max-height: 80vh;
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 8px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
}

#file-panel.visible {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.file-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: #252525;
    border-bottom: 1px solid #333;
    border-radius: 8px 8px 0 0;
}

.file-panel-header span {
    color: #fff;
    font-size: 16px;
    font-weight: 500;
}

.close-btn {
    background: none;
    border: none;
    color: #888;
    font-size: 24px;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
}

.close-btn:hover {
    color: #fff;
}

.file-panel-body {
    display: flex;
    gap: 16px;
    padding: 16px;
    flex: 1;
    overflow: hidden;
}

.file-browser {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #222;
    border-radius: 6px;
    overflow: hidden;
}

.browser-header {
    padding: 10px 12px;
    background: #2a2a2a;
    border-bottom: 1px solid #333;
}

.browser-title {
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    display: block;
    margin-bottom: 8px;
}

.path-nav {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-btn {
    padding: 4px 10px;
    background: #333;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

.nav-btn:hover {
    background: #444;
}

.path-input {
    flex: 1;
    padding: 6px 10px;
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 4px;
    color: #aaa;
    font-size: 12px;
}

.file-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
    min-height: 200px;
    max-height: 300px;
}

.file-item {
    display: flex;
    align-items: center;
    padding: 8px 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.15s;
}

.file-item:hover {
    background: #333;
}

.file-item.selected {
    background: rgba(0, 120, 215, 0.3);
}

.file-icon {
    margin-right: 8px;
    font-size: 16px;
}

.file-name {
    flex: 1;
    color: #ddd;
    font-size: 13px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-size {
    color: #888;
    font-size: 12px;
    margin-left: 10px;
}

.remove-btn {
    background: none;
    border: none;
    color: #666;
    font-size: 16px;
    cursor: pointer;
    padding: 0 4px;
    margin-left: 8px;
}

.remove-btn:hover {
    color: #f44336;
}

.browser-actions {
    display: flex;
    gap: 8px;
    padding: 10px 12px;
    background: #2a2a2a;
    border-top: 1px solid #333;
}

.action-btn {
    flex: 1;
    padding: 8px 12px;
    background: #333;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    transition: background 0.2s;
}

.action-btn:hover:not(:disabled) {
    background: #444;
}

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.action-btn.primary {
    background: #0078d7;
}

.action-btn.primary:hover:not(:disabled) {
    background: #006cbd;
}

.action-btn.danger {
    background: #d32f2f;
}

.action-btn.danger:hover:not(:disabled) {
    background: #b71c1c;
}

.transfer-list {
    padding: 10px 16px;
    background: #252525;
    border-top: 1px solid #333;
    border-radius: 0 0 8px 8px;
    max-height: 120px;
    overflow-y: auto;
}

.transfer-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    font-size: 12px;
}

.transfer-type {
    color: #888;
    font-size: 14px;
}

.transfer-name {
    color: #ddd;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.transfer-progress {
    width: 100px;
    height: 4px;
    background: #333;
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: #0078d7;
    transition: width 0.2s;
}

.transfer-percent {
    color: #888;
    width: 35px;
    text-align: right;
}

.transfer-item.completed .progress-bar {
    background: #4caf50;
}

.transfer-item.failed .progress-bar {
    background: #f44336;
}

.file-list::-webkit-scrollbar,
.transfer-list::-webkit-scrollbar {
    width: 6px;
}

.file-list::-webkit-scrollbar-track,
.transfer-list::-webkit-scrollbar-track {
    background: #1a1a1a;
}

.file-list::-webkit-scrollbar-thumb,
.transfer-list::-webkit-scrollbar-thumb {
    background: #444;
    border-radius: 3px;
}

.file-list::-webkit-scrollbar-thumb:hover,
.transfer-list::-webkit-scrollbar-thumb:hover {
    background: #555;
}