:root {
    --primary: #3498db;
    --primary-dark: #2980b9;
    --secondary: #2c3e50;
    --text: #ecf0f1;
    --bg: #1a1a1a;
    --controls-bg: rgba(0, 0, 0, 0.7);
    --progress-height: 6px;
    --progress-bg: rgba(255, 255, 255, 0.2);
    --progress-loaded: rgba(255, 255, 255, 0.4);
    --progress-played: var(--primary);
    --settings-bg: rgba(30, 30, 30, 0.95);
    --video-item-hover: rgba(52, 152, 219, 0.2);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.player-container {
    width: 100%;
    max-width: 800px;
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    transform: translateY(0);
    transition: transform 0.3s ease;
}

.player-container:hover {
    transform: translateY(-5px);
}

.video-container {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    background-color: #000;
}

video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    outline: none;
}

.controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--controls-bg);
    padding: 12px;
    display: flex;
    flex-direction: column;
    transform: translateY(100%);
    transition: transform 0.2s ease;
    z-index: 10;
}

.video-container:hover .controls {
    transform: translateY(0);
}

.progress-container {
    width: 100%;
    height: var(--progress-height);
    background: var(--progress-bg);
    border-radius: 3px;
    margin-bottom: 10px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.progress-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--progress-played);
    width: 0;
    border-radius: 3px;
    transition: width 0.1s linear;
}

.loaded-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--progress-loaded);
    width: 0;
    border-radius: 3px;
}

.time-display {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    margin-bottom: 8px;
    opacity: 0.8;
}

.main-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.left-controls, .right-controls {
    display: flex;
    align-items: center;
}

.control-btn {
    background: none;
    border: none;
    color: var(--text);
    font-size: 16px;
    cursor: pointer;
    margin: 0 5px;
    padding: 5px;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.1);
}

.control-btn:active {
    transform: scale(0.95);
}

.play-btn {
    background: var(--primary);
}

.play-btn:hover {
    background: var(--primary-dark);
}

.volume-container {
    display: flex;
    align-items: center;
    margin-left: 10px;
}

.volume-slider {
    width: 80px;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--progress-bg);
    border-radius: 2px;
    outline: none;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.volume-container:hover .volume-slider {
    opacity: 1;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text);
    cursor: pointer;
}

.fullscreen-btn {
    margin-left: 10px;
}

/* Settings Panel */
.settings-panel {
    position: absolute;
    bottom: 60px;
    right: 10px;
    background: var(--settings-bg);
    border-radius: 8px;
    padding: 15px;
    width: 260px;
    max-height: 400px;
    overflow-y: auto;
    transform: translateY(20px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 20;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.settings-panel.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.settings-panel::before {
    content: '';
    position: absolute;
    bottom: -8px;
    right: 15px;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid var(--settings-bg);
}

.settings-section {
    margin-bottom: 15px;
}

.settings-section-title {
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--primary);
    display: flex;
    align-items: center;
}

.settings-section-title i {
    margin-right: 8px;
}

.settings-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.settings-item:last-child {
    margin-bottom: 0;
}

.settings-label {
    font-size: 14px;
    margin-right: 10px;
}

.settings-select, .settings-input {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text);
    padding: 5px 8px;
    border-radius: 4px;
    font-size: 14px;
}

.settings-select {
    width: 100px;
}

.settings-input {
    width: 60px;
}

/* Video Selection Menu */
.video-list {
    list-style: none;
    margin-top: 8px;
    border-radius: 4px;
    overflow: hidden;
}

.video-item {
    padding: 10px 12px;
    cursor: pointer;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    border-left: 3px solid transparent;
}

.video-item.loading {
    justify-content: center;
    cursor: default;
    font-style: italic;
}

.video-item:hover:not(.loading) {
    background: var(--video-item-hover);
}

.video-item.active {
    background: rgba(52, 152, 219, 0.3);
    border-left-color: var(--primary);
    font-weight: bold;
}

.video-item-thumbnail {
    width: 40px;
    height: 30px;
    background-color: #333;
    margin-right: 10px;
    background-size: cover;
    background-position: center;
    border-radius: 2px;
}

.video-item-title {
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-grow: 1;
}

.video-item-duration {
    font-size: 11px;
    opacity: 0.7;
    margin-left: 8px;
}

/* Quality selector */
.quality-selector {
    display: flex;
    flex-direction: column;
}

.quality-option {
    padding: 8px 12px;
    cursor: pointer;
    border-radius: 4px;
    margin-bottom: 4px;
    font-size: 13px;
    transition: background 0.2s;
}

.quality-option:hover {
    background: rgba(255, 255, 255, 0.1);
}

.quality-option.active {
    background: var(--primary);
    font-weight: bold;
}

/* Animations */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s ease-in-out infinite;
    z-index: 5;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .volume-slider {
        width: 60px;
    }
    
    .control-btn {
        margin: 0 3px;
        width: 32px;
        height: 32px;
        font-size: 14px;
    }
    
    .time-display {
        font-size: 11px;
    }

    .settings-panel {
        width: 220px;
        right: 5px;
    }
}

@media (max-width: 400px) {
    .volume-slider {
        display: none;
    }

    .settings-panel {
        width: 200px;
        padding: 10px;
    }

    .video-item {
        padding: 8px 10px;
    }

    .video-item-thumbnail {
        width: 30px;
        height: 22px;
        margin-right: 8px;
    }
}