/* ==============================================================================
   Mizhaki's Blog - 俄罗斯方块专属样式表 (tetris/tetris.css)
   深度适配全站主题系统（复古 / 沉浸深色 / M3）与响应式布局
   ============================================================================== */

/* 1. 游戏容器整体布局 */
.game-container {
    max-width: 960px !important;
    margin: 1.5rem auto 3rem auto !important;
    padding: 0 1rem;
}

.game-main {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

/* 2. 顶部导航与状态条 */
.game-top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.85rem 1.25rem !important;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.game-top-bar .back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.95rem;
    transition: transform 0.2s ease, color 0.2s ease;
}

.game-top-bar .back-link:hover {
    transform: translateX(-3px);
    color: var(--primary-hover);
}

.game-title-badge {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.game-badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    background-color: var(--tag-bg);
    color: var(--tag-text);
    border: 1px solid var(--border-color);
    letter-spacing: 0.02em;
}

.game-status-badge {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* 3. 游戏主舞台卡片 */
.game-card {
    padding: 1.5rem !important;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.game-header {
    width: 100%;
    text-align: center;
    margin-bottom: 1.25rem;
}

.game-title {
    font-size: 1.85rem;
    font-weight: 700;
    margin: 0 0 0.4rem 0;
    color: var(--text-main);
    letter-spacing: -0.01em;
}

.game-subtitle {
    font-size: 0.92rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.5;
}

/* 4. Canvas 画布视口与加载遮罩 */
.game-viewport-wrapper {
    position: relative;
    width: 100%;
    max-width: 800px;
    aspect-ratio: 800 / 750;
    background-color: #0b0c0e;
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35), inset 0 0 0 1px rgba(255, 255, 255, 0.08);
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
}

/* Emscripten canvas 必须零 padding、零 border，保持光标与点阵精准 */
canvas.emscripten {
    width: 100% !important;
    height: 100% !important;
    border: 0px none !important;
    padding: 0 !important;
    margin: 0 !important;
    outline: none !important;
    display: block;
    background-color: #000000;
    cursor: default;
    touch-action: none;
}

/* 加载动画遮罩 */
.game-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(24, 27, 34, 0.96) 0%, rgba(11, 12, 14, 0.99) 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    z-index: 10;
    transition: opacity 0.45s ease, visibility 0.45s ease;
    padding: 1.5rem;
    text-align: center;
}

.game-loading-overlay.loaded {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.game-spinner {
    width: 44px;
    height: 44px;
    border: 4px solid rgba(255, 255, 255, 0.15);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: game-spin 0.85s cubic-bezier(0.5, 0.1, 0.5, 0.9) infinite;
}

@keyframes game-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.game-loading-text {
    font-size: 1rem;
    font-weight: 600;
    color: #f1f5f9;
    letter-spacing: 0.02em;
}

.game-progress-track {
    width: min(280px, 80%);
    height: 8px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    overflow: hidden;
    position: relative;
}

.game-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary-color) 0%, #ffd166 100%);
    border-radius: 999px;
    transition: width 0.25s ease;
}

.game-loading-tip {
    font-size: 0.82rem;
    color: #94a3b8;
    margin: 0;
}

/* 5. 游戏工具条与操作按钮 */
.game-toolbar {
    width: 100%;
    max-width: 800px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 0.85rem;
    border-top: 1px dashed var(--border-color);
    flex-wrap: wrap;
    gap: 0.75rem;
}

.game-toolbar-left,
.game-toolbar-right {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.btn-game-action {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.9rem;
    background-color: var(--tag-bg);
    color: var(--tag-text);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    user-select: none;
}

.btn-game-action:hover {
    background-color: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
}

.btn-game-action:active {
    transform: translateY(0);
}

.game-tip-pill {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* 6. 按键操作说明卡片 */
.game-guide-card {
    padding: 1.5rem !important;
}

.guide-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0 0 1rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.guide-sub-header {
    margin-bottom: 0.65rem;
}

.guide-sub-title {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: 0.01em;
}

.guide-keys-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.85rem;
}

.key-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.65rem 0.85rem;
    background-color: var(--tag-item-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: transform 0.18s ease;
}

.key-item:hover {
    transform: translateY(-2px);
}

.key-cap {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-width: 28px;
    height: 28px;
    padding: 0 6px;
    background: var(--card-bg);
    color: var(--primary-color);
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.88rem;
    font-weight: 700;
    border: 1px solid var(--border-color);
    border-bottom: 2px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

.key-desc {
    font-size: 0.88rem;
    color: var(--text-main);
    font-weight: 500;
}

/* 7. 技术架构说明卡片 */
.game-info-card {
    padding: 1.5rem !important;
}

.game-info-card p {
    font-size: 0.94rem;
    line-height: 1.7;
    color: var(--text-main);
    margin: 0 0 0.8rem 0;
}

.game-info-card p:last-child {
    margin-bottom: 0;
}

.game-info-card strong {
    color: var(--primary-color);
}

/* 8. 响应式微调 */
@media (max-width: 768px) {
    .game-card {
        padding: 1rem !important;
    }
    .game-title {
        font-size: 1.45rem;
    }
    .game-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    .game-toolbar-left,
    .game-toolbar-right {
        justify-content: center;
    }
    .guide-keys-grid {
        grid-template-columns: 1fr;
    }
}