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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    align-items: center;
    justify-content: center;
    transition: background-color 0.8s ease, opacity 0.5s ease;
}

.screen.active {
    display: flex;
}

/* Age Gate Screen */
#age-gate {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: white;
}

.age-gate-content {
    text-align: center;
    padding: 2rem;
    max-width: 500px;
}

.age-gate-content h1 {
    font-size: 3rem;
    margin-bottom: 2rem;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.age-gate-content .warning {
    font-size: 1.2rem;
    color: #ff6b6b;
    margin-bottom: 1rem;
    font-weight: bold;
}

.age-gate-content p {
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* Options Screen */
#options-screen {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
}

.options-content {
    max-width: 600px;
    width: 90%;
    padding: 2rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.options-content h1 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.5rem;
}

.setting-group {
    margin-bottom: 2rem;
}

.setting-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    font-weight: 500;
}

.setting-group input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.2);
    outline: none;
    -webkit-appearance: none;
}

.setting-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #4CAF50;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

.setting-group input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #4CAF50;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

.setting-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-right: 10px;
    cursor: pointer;
}

/* Game Screen */
#game-screen {
    background-color: #000;
    color: white;
}

#game-screen.stroke-state {
    background-color: #2d5016;
    animation: pulse-green 2s ease-in-out infinite;
}

#game-screen.stop-state {
    background-color: #501616;
    animation: pulse-red 2s ease-in-out infinite;
}

@keyframes pulse-green {
    0%, 100% { background-color: #2d5016; }
    50% { background-color: #3d7026; }
}

@keyframes pulse-red {
    0%, 100% { background-color: #501616; }
    50% { background-color: #702626; }
}

#game-content {
    text-align: center;
    width: 100%;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.instruction {
    font-size: 4rem;
    font-weight: bold;
    margin-bottom: 2rem;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.5);
    animation: fade-in 0.5s ease;
    line-height: 1.2;
}

@media (max-width: 768px) {
    .instruction {
        font-size: 2.5rem;
    }
}

@keyframes fade-in {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.timer {
    font-size: 2rem;
    margin-bottom: 3rem;
    font-family: 'Courier New', monospace;
    opacity: 0.8;
}

.progress-container {
    width: 90%;
    max-width: 600px;
    margin-bottom: 3rem;
}

.progress-label {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.edge-bar-container {
    width: 100%;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    margin-bottom: 0.5rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.edge-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #ff6b6b 0%, #ee5a6f 50%, #ff4757 100%);
    transition: width 0.5s ease;
    border-radius: 20px;
    box-shadow: 0 0 20px rgba(255, 71, 87, 0.5);
    position: relative;
    overflow: hidden;
}

.edge-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-percentage {
    font-size: 1.5rem;
    font-weight: bold;
    text-align: center;
}

.game-controls {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 2rem;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    font-size: 1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: #4CAF50;
    color: white;
}

.btn-primary:hover {
    background: #45a049;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.4);
}

.btn-secondary {
    background: #555;
    color: white;
}

.btn-secondary:hover {
    background: #666;
    transform: translateY(-2px);
}

.btn-control {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-control:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.button-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

/* End Game Overlay */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.3s ease;
}

.overlay.hidden {
    display: none;
}

.end-content {
    text-align: center;
    padding: 3rem;
    max-width: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.end-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.end-content p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .age-gate-content h1 {
        font-size: 2rem;
    }

    .options-content h1 {
        font-size: 2rem;
    }

    .instruction {
        font-size: 2rem;
    }

    .timer {
        font-size: 1.5rem;
    }

    .game-controls {
        flex-direction: column;
        width: 100%;
    }

    .btn-control {
        width: 100%;
    }

    .button-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

/* Fullscreen support */
body:fullscreen #game-content,
body:-webkit-full-screen #game-content,
body:-moz-full-screen #game-content,
body:-ms-fullscreen #game-content {
    padding: 1rem;
}

/* Lobby Screen */
#lobby-screen {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
}

.lobby-content {
    max-width: 600px;
    width: 90%;
    padding: 2rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.lobby-content h1 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.5rem;
}

.lobby-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.lobby-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.lobby-divider {
    text-align: center;
    margin: 2rem 0;
    font-size: 1.2rem;
    font-weight: bold;
    opacity: 0.7;
}

.input-group {
    margin-bottom: 1rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.input-group input {
    width: 100%;
    padding: 10px;
    font-size: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.input-group input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

/* Room Waiting Screen */
#room-waiting-screen {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    overflow-y: auto;
}

.room-waiting-content {
    max-width: 800px;
    width: 90%;
    padding: 2rem;
    margin: 2rem auto;
}

.room-waiting-content h1 {
    text-align: center;
    margin-bottom: 1rem;
}

.room-code-display {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 2rem;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
}

.room-settings-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
}

.players-section,
.spectators-section {
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
}

.players-list,
.spectators-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}

.player-item,
.spectator-item {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    min-width: 150px;
    text-align: center;
}

.player-item.failed {
    background: rgba(255, 0, 0, 0.3);
    opacity: 0.7;
}

.player-item.host::after {
    content: " 👑";
}

/* Video Grid */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    width: 100%;
    max-width: 1200px;
    margin: 2rem 0;
    padding: 1rem;
}

.video-grid video {
    width: 100%;
    aspect-ratio: 16/9;
    background: #000;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    object-fit: cover;
}

.video-item {
    position: relative;
}

.video-item .video-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.5rem;
    text-align: center;
    font-size: 0.9rem;
    border-radius: 0 0 8px 8px;
}

.video-item.local {
    border: 2px solid #4CAF50;
}

/* Rankings */
.rankings-container {
    width: 100%;
    max-width: 600px;
    margin: 1rem 0;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
}

.rankings-container.hidden {
    display: none;
}

.rankings-container h3 {
    margin-bottom: 1rem;
    text-align: center;
}

.rankings-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.ranking-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
}

.ranking-item.rank-1 {
    background: linear-gradient(90deg, rgba(255, 215, 0, 0.3), rgba(255, 215, 0, 0.1));
    border: 2px solid gold;
}

.ranking-item .rank {
    font-weight: bold;
    font-size: 1.2rem;
}

.ranking-item .username {
    flex-grow: 1;
    margin-left: 1rem;
}

.ranking-item .edge-level {
    font-weight: bold;
}

/* Chat Sidebar */
.chat-sidebar {
    position: fixed;
    right: 0;
    top: 0;
    bottom: 0;
    width: 300px;
    background: rgba(0, 0, 0, 0.95);
    color: white;
    display: flex;
    flex-direction: column;
    border-left: 2px solid #333;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.chat-header {
    padding: 1rem;
    background: #111;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #333;
}

.chat-header h3 {
    margin: 0;
    font-size: 1.2rem;
}

.toggle-chat {
    background: transparent;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
}

.chat-messages {
    flex-grow: 1;
    padding: 1rem;
    overflow-y: auto;
    font-size: 0.9rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.chat-messages .message {
    word-wrap: break-word;
    padding: 0.5rem;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.05);
}

.chat-messages .message.system {
    background: rgba(255, 255, 0, 0.2);
    font-style: italic;
    text-align: center;
}

.chat-messages .message.king {
    background: rgba(255, 215, 0, 0.2);
    border-left: 3px solid gold;
}

.chat-messages .message .username {
    font-weight: bold;
    margin-right: 0.5rem;
}

.chat-input-area {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    border-top: 1px solid #333;
    background: #111;
}

.chat-input-area #chat-input {
    width: 100%;
    padding: 0.75rem;
    background: #222;
    border: 1px solid #444;
    color: white;
    border-radius: 5px;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.chat-input-area #send-btn {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
}

.quick-reactions {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.quick-reactions span {
    font-size: 1.5em;
    cursor: pointer;
    padding: 0.25rem;
    transition: transform 0.2s;
}

.quick-reactions span:hover {
    transform: scale(1.2);
}

/* Mobile: Collapsible Chat */
@media (max-width: 768px) {
    .chat-sidebar {
        transform: translateX(100%);
    }

    .chat-sidebar.open {
        transform: translateX(0);
    }

    .video-grid {
        grid-template-columns: 1fr;
    }

    .lobby-content,
    .room-waiting-content {
        width: 95%;
        padding: 1rem;
    }
}