/* ═══ Design Tokens (from lobby.pen) ═══ */
:root {
    --bg: #0A0A0A;
    --card: #18181B;
    --secondary: #27272A;
    --border: #27272A;
    --input: #0A0A0A;
    --primary: #C4F82A;
    --primary-fg: #0A0A0A;
    --fg: #FFFFFF;
    --muted-fg: #A1A1AA;
    --placeholder: #52525B;
    --success: #4ADE80;
    --success-bg: rgba(21, 128, 61, 0.2);
    --warning: #FBBF24;
    --warning-bg: rgba(245, 158, 11, 0.2);
    --error: #F87171;
    --error-bg: rgba(220, 38, 38, 0.2);
    --info: #60A5FA;
    --info-bg: rgba(37, 99, 235, 0.2);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-pill: 100px;
}

/* ═══ Reset ═══ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans TC', sans-serif;
    background: var(--bg);
    color: var(--fg);
    min-height: 100vh;
    overflow: hidden;
}

.screen { width: 100vw; min-height: 100vh; }

/* ═══ Login Screen ═══ */
#login-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
}

.login-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 48px 40px;
    width: 400px;
    max-width: 90vw;
}

.login-title {
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 4px;
}

.login-subtitle {
    color: var(--muted-fg);
    font-size: 14px;
    text-align: center;
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--fg);
    margin-bottom: 8px;
}

.form-group input {
    width: 100%;
    height: 44px;
    background: var(--input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0 14px;
    font-size: 14px;
    color: var(--fg);
    outline: none;
    transition: border-color 0.2s;
}

.form-group input::placeholder { color: var(--placeholder); }
.form-group input:focus { border-color: var(--primary); }

.error-msg {
    color: var(--error);
    font-size: 13px;
    min-height: 20px;
    margin-bottom: 8px;
}

.btn-primary {
    width: 100%;
    height: 44px;
    background: var(--primary);
    color: var(--primary-fg);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-primary:hover { opacity: 0.9; }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.login-hint {
    color: var(--placeholder);
    font-size: 12px;
    text-align: center;
    margin-top: 16px;
}

.login-hint a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.login-hint a:hover {
    text-decoration: underline;
}

/* ═══ Captcha ═══ */
.captcha-group {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    margin-bottom: 20px;
}

.captcha-input {
    flex: 1;
    margin-bottom: 0;
}

.captcha-box {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.captcha-box canvas {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: #1a1a2e;
    width: 150px;
    height: 50px;
}

.captcha-refresh {
    width: 32px;
    height: 50px;
    background: var(--secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--muted-fg);
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

.captcha-refresh:hover {
    color: var(--primary);
}

/* ═══ Lobby Header ═══ */
.lobby-header {
    height: 64px;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.header-left, .header-right { display: flex; align-items: center; gap: 12px; }

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.username { font-size: 15px; font-weight: 600; }

.points-badge {
    background: var(--secondary);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 2px 10px;
    border-radius: var(--radius-pill);
}

.game-name-badge {
    background: rgba(196, 248, 42, 0.15);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 3px 12px;
    border-radius: var(--radius-pill);
}

.online-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--secondary);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    color: var(--muted-fg);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.btn-icon {
    width: 36px;
    height: 36px;
    background: var(--secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--fg);
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.btn-icon:hover { background: var(--border); }

.btn-secondary {
    height: 36px;
    padding: 0 16px;
    background: var(--secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--fg);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-secondary:hover { background: var(--border); }

/* ═══ Game Select Screen ═══ */
.game-select-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: calc(100vh - 64px);
    padding: 24px;
}

.game-select-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.game-select-subtitle {
    color: var(--muted-fg);
    font-size: 14px;
    margin-bottom: 40px;
}

.game-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    max-width: 640px;
    width: 100%;
}

.game-card {
    position: relative;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.15s;
    overflow: hidden;
}

.game-help-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(240,192,64,0.9);
    color: #000;
    font-weight: bold;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: transform 0.15s;
}
.game-help-btn:hover {
    transform: scale(1.15);
    background: #f0c040;
}

.game-card:hover:not(.disabled) {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.game-card .game-icon {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 36px;
    overflow: hidden;
}

.game-card .game-icon img {
    width: 160%;
    height: 160%;
    object-fit: cover;
    object-position: center;
    display: block;
    border-radius: 50%;
}

.game-card .game-card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
}

.game-card .game-card-desc {
    font-size: 13px;
    color: var(--muted-fg);
    margin-bottom: 12px;
}

.game-card .game-card-players {
    font-size: 11px;
    color: var(--placeholder);
}

/* Disabled game card */
.game-card.disabled {
    opacity: 0.45;
    filter: grayscale(1);
    pointer-events: none;
    cursor: not-allowed;
}

.game-card.disabled::after {
    content: '暫不開放';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-35deg);
    background: rgba(220, 38, 38, 0.85);
    color: white;
    font-size: 18px;
    font-weight: 700;
    padding: 8px 48px;
    white-space: nowrap;
    letter-spacing: 2px;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    z-index: 2;
}

/* ═══ Lobby Body (3-column) ═══ */
.lobby-body {
    display: flex;
    gap: 16px;
    padding: 16px;
    height: calc(100vh - 64px);
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
}

/* ── Left Column: Online Players ── */
.online-players-col {
    width: 280px;
    min-width: 280px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.col-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px;
    font-size: 14px;
    font-weight: 600;
}

.col-icon { width: 18px; height: 18px; color: var(--muted-fg); }

.col-count {
    margin-left: auto;
    background: var(--secondary);
    color: var(--muted-fg);
    font-size: 12px;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: var(--radius-pill);
}

.col-divider {
    height: 1px;
    background: var(--border);
    margin: 0 16px;
}

.player-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.player-list::-webkit-scrollbar { width: 4px; }
.player-list::-webkit-scrollbar-track { background: transparent; }
.player-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.player-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: background 0.15s;
}

.player-item:hover { background: var(--secondary); }

.player-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.player-info { flex: 1; min-width: 0; }

.player-name {
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.player-status {
    font-size: 11px;
    color: var(--muted-fg);
}

.player-status.playing { color: var(--warning); }

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.status-dot.online { background: var(--success); }
.status-dot.playing { background: var(--warning); }
.status-dot.away { background: var(--muted-fg); }

.empty-hint {
    color: var(--placeholder);
    font-size: 13px;
    text-align: center;
    padding: 32px 16px;
}

/* ── Room Columns ── */
.room-col {
    flex: 1;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.room-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
}

.room-title { font-size: 16px; font-weight: 600; }

.room-status-badge {
    font-size: 12px;
    font-weight: 500;
    padding: 3px 12px;
    border-radius: var(--radius-pill);
}

.room-status-badge.waiting {
    background: var(--success-bg);
    color: var(--success);
}

.room-status-badge.playing {
    background: var(--warning-bg);
    color: var(--warning);
}

.room-status-badge.idle {
    background: var(--info-bg);
    color: var(--info);
}

.room-info-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px 12px;
}

.room-player-count {
    font-size: 13px;
    color: var(--muted-fg);
}

.btn-join {
    height: 32px;
    padding: 0 20px;
    background: var(--primary);
    color: var(--primary-fg);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-join:hover { opacity: 0.9; }
.btn-join:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-leave {
    height: 32px;
    padding: 0 20px;
    background: var(--error-bg);
    color: var(--error);
    border: 1px solid rgba(248, 113, 113, 0.3);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-leave:hover { opacity: 0.9; }

/* ── Host Action Buttons (Start / Force Start) ── */
.room-host-actions {
    display: flex;
    gap: 8px;
    padding: 0 16px 12px;
}

.btn-start {
    flex: 1;
    height: 34px;
    background: var(--success);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-start:hover:not(:disabled) { opacity: 0.9; }
.btn-start:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-force-start {
    flex: 1;
    height: 34px;
    background: var(--warning);
    color: #000;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-force-start:hover:not(:disabled) { opacity: 0.9; }
.btn-force-start:disabled { opacity: 0.4; cursor: not-allowed; }

.room-divider {
    height: 1px;
    background: var(--border);
    margin: 0 16px;
}

.room-player-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.room-player-list::-webkit-scrollbar { width: 4px; }
.room-player-list::-webkit-scrollbar-track { background: transparent; }
.room-player-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.room-player-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 8px;
    border-radius: var(--radius-sm);
}

.room-player-item + .room-player-item {
    border-top: 1px solid var(--border);
}

.room-player-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.room-player-info { flex: 1; min-width: 0; }

.room-player-name {
    font-size: 14px;
    font-weight: 500;
}

.room-player-role {
    font-size: 11px;
    color: var(--muted-fg);
}

.host-badge {
    font-size: 11px;
    color: var(--primary);
    font-weight: 600;
}

.ready-badge {
    font-size: 11px;
    color: var(--success);
}

.empty-slot {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 8px;
    border-radius: var(--radius-sm);
    color: var(--placeholder);
    font-size: 13px;
}

.empty-slot + .empty-slot, .room-player-item + .empty-slot, .empty-slot + .room-player-item {
    border-top: 1px solid var(--border);
}

.empty-slot-circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px dashed var(--border);
    flex-shrink: 0;
}

/* ═══ Toast ═══ */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--fg);
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    z-index: 1000;
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    pointer-events: none;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.error { border-color: var(--error); color: var(--error); }
.toast.success { border-color: var(--success); color: var(--success); }

/* ═══ Connection indicator ═══ */
.conn-indicator {
    position: fixed;
    top: 8px;
    right: 8px;
    font-size: 11px;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    z-index: 999;
}

.conn-indicator.connected { background: var(--success-bg); color: var(--success); }
.conn-indicator.disconnected { background: var(--error-bg); color: var(--error); }
.conn-indicator.connecting { background: var(--warning-bg); color: var(--warning); }

/* ═══ Game Screen (Cocos 嵌入) ═══ */
#game-screen {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: #000;
    z-index: 100;
    display: flex;
    flex-direction: column;
}

#game-toolbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 6px 16px;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    height: 44px;
    z-index: 101;
}

#game-toolbar .btn-secondary {
    font-size: 13px;
    padding: 4px 14px;
}

#game-status-text {
    color: var(--muted-fg);
    font-size: 13px;
}

#game-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: #333;
}

/* Cocos iframe 在 game-container 內全屏 */
#game-iframe {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    border: none;
    outline: none;
}

/* ═══ Mobile: 大廳垂直堆疊 ═══ */
@media screen and (max-width: 768px) {
    body { overflow: auto; -webkit-overflow-scrolling: touch; }
    .lobby-body {
        flex-direction: column;
        height: auto;
        overflow: visible;
    }
    .online-players-col {
        width: 100%;
        min-width: unset;
        max-height: 200px;
    }
    .rooms-col {
        flex: none;
        width: 100%;
    }
    .lobby-header {
        flex-wrap: wrap;
        gap: 8px;
    }
    .game-select-body {
        grid-template-columns: 1fr;
    }
}