/* ============================================
   响应式断点样式 - 孟菲斯风格
   ============================================ */

/* 移动端 ≤ 576px */
@media (max-width: 576px) {
    .game-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }

    .game-card {
        padding: 18px 14px;
        border-width: 2px;
        box-shadow: 4px 4px 0 var(--text);
    }

    .game-card::before {
        width: 30px;
        height: 30px;
    }

    .game-card::after {
        width: 15px;
        height: 15px;
    }

    .game-card:hover {
        transform: translate(-2px, -2px) rotate(-1deg);
        box-shadow: 6px 6px 0 var(--text);
    }

    .game-card .game-icon {
        font-size: 42px;
    }

    .game-card .game-name {
        font-size: 14px;
    }

    .game-card .game-desc {
        font-size: 11px;
        display: none;
    }

    .game-card .difficulty .star {
        font-size: 12px;
    }

    .wordbank-list {
        padding: 12px;
    }

    .wordbank-card {
        padding: 14px;
        border-width: 2px;
        box-shadow: 3px 3px 0 var(--text);
    }

    .wordbank-card .wb-icon {
        width: 48px;
        height: 48px;
        font-size: 24px;
    }

    .modal {
        width: 95%;
        max-height: 90vh;
        border-width: 3px;
        box-shadow: 6px 6px 0 var(--text);
    }

    .container {
        padding: 0 12px;
    }

    .navbar .container {
        height: 54px;
    }

    .navbar-brand {
        font-size: 18px;
    }

    .navbar-brand .logo {
        font-size: 26px;
    }

    .btn-login {
        padding: 8px 18px;
        font-size: 12px;
    }

    .page-header {
        padding: 12px 14px;
        border-width: 2px;
    }

    .page-header h1 {
        font-size: 15px;
    }

    .btn-back {
        width: 36px;
        height: 36px;
    }

    /* 游戏界面适配 */
    .game-area {
        padding: 12px;
    }

    .game-status-bar {
        padding: 10px 14px;
        flex-wrap: wrap;
        gap: 8px;
    }

    .game-status-bar .stat {
        font-size: 13px;
        padding: 5px 10px;
    }

    .match-columns {
        flex-direction: column;
        gap: 10px;
    }

    .match-column {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 8px;
    }

    .match-item {
        padding: 10px 14px;
        font-size: 13px;
        border-width: 2px;
        box-shadow: 2px 2px 0 var(--text);
    }

    .word-input {
        font-size: 20px;
        padding: 14px 20px;
        border-width: 3px;
    }

    .letter-box {
        width: 42px;
        height: 42px;
        font-size: 18px;
    }

    .memory-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }

    .options-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .option-btn {
        padding: 14px 16px;
        font-size: 14px;
    }

    .result-card {
        padding: 28px 20px;
        border-width: 3px;
    }

    .result-card .result-emoji {
        font-size: 60px;
    }

    .result-card .result-title {
        font-size: 22px;
    }

    .result-card .result-score {
        font-size: 42px;
    }

    .result-card .result-details {
        gap: 10px;
    }

    .result-card .result-detail {
        padding: 10px 6px;
    }

    .result-card .result-detail .value {
        font-size: 16px;
    }

    .countdown-number {
        font-size: 100px;
    }

    .rank-card {
        padding: 12px 14px;
        border-width: 2px;
        box-shadow: 2px 2px 0 var(--text);
    }

    .rank-card .rank-num {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }

    .rank-card .rank-avatar {
        font-size: 22px;
    }

    .rank-card .rank-name {
        font-size: 13px;
    }

    .rank-card .rank-score {
        font-size: 18px;
    }

    .fab {
        padding: 12px 24px;
        font-size: 14px;
        border-width: 2px;
    }

    .tabs {
        border-width: 2px;
        box-shadow: 2px 2px 0 var(--text);
    }

    .tab {
        padding: 10px 14px;
        font-size: 13px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 14px;
        border-width: 2px;
        box-shadow: 3px 3px 0 var(--text);
    }

    .btn-sm {
        padding: 6px 12px;
        font-size: 12px;
        box-shadow: 2px 2px 0 var(--text);
    }

    .btn-lg {
        padding: 12px 24px;
        font-size: 16px;
    }

    .form-input,
    .form-textarea,
    .form-select {
        padding: 10px 14px;
        font-size: 14px;
        border-width: 2px;
        box-shadow: 2px 2px 0 var(--text);
    }

    .grade-tag {
        padding: 6px 14px;
        font-size: 12px;
        border-width: 2px;
    }

    .toast {
        padding: 10px 20px;
        font-size: 13px;
        border-width: 2px;
    }

    .footer {
        padding: 20px 12px;
        font-size: 12px;
    }

    .hint-text {
        font-size: 24px;
        padding: 12px 18px;
    }

    .game-title {
        font-size: 20px;
        letter-spacing: 1px;
    }

    .combo-display {
        font-size: 16px;
        padding: 6px 14px;
    }
}

/* 平板竖屏 577px - 768px */
@media (min-width: 577px) and (max-width: 768px) {
    .game-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }

    .game-card {
        padding: 22px 16px;
    }

    .game-card .game-icon {
        font-size: 50px;
    }

    .game-card .game-name {
        font-size: 16px;
    }

    .game-card .game-desc {
        font-size: 12px;
    }

    .modal {
        max-width: 450px;
    }

    .memory-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .options-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .result-card {
        max-width: 380px;
    }
}

/* 平板横屏 769px - 992px */
@media (min-width: 769px) and (max-width: 992px) {
    .game-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .game-card .game-icon {
        font-size: 54px;
    }

    .game-card:hover {
        transform: translate(-4px, -4px) rotate(-2deg);
        box-shadow: 10px 10px 0 var(--text);
    }

    .modal {
        max-width: 480px;
    }

    .memory-grid {
        grid-template-columns: repeat(4, 1fr);
        max-width: 450px;
    }
}

/* 桌面端 ≥ 993px */
@media (min-width: 993px) {
    .game-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }

    .game-card {
        padding: 28px 20px;
    }

    .game-card .game-icon {
        font-size: 60px;
    }

    .game-card:hover {
        transform: translate(-5px, -5px) rotate(-2deg);
        box-shadow: 12px 12px 0 var(--text);
    }

    .game-card .game-name {
        font-size: 18px;
    }

    .game-card .game-desc {
        font-size: 14px;
    }

    .navbar .container {
        height: 64px;
    }

    .navbar-brand {
        font-size: 24px;
    }

    .navbar-brand .logo {
        font-size: 36px;
    }

    .container {
        padding: 0 24px;
    }

    .modal {
        max-width: 520px;
    }

    .result-card {
        max-width: 450px;
        padding: 40px 32px;
    }

    .memory-grid {
        grid-template-columns: repeat(4, 1fr);
        max-width: 500px;
    }

    .letter-box {
        width: 56px;
        height: 56px;
        font-size: 24px;
    }

    .word-input {
        font-size: 28px;
        padding: 18px 28px;
    }

    .options-grid {
        gap: 16px;
    }

    .option-btn {
        padding: 20px 24px;
        font-size: 17px;
    }

    .countdown-number {
        font-size: 180px;
    }
}

/* 大屏幕 ≥ 1200px */
@media (min-width: 1200px) {
    .game-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 28px;
    }

    .container {
        max-width: 1400px;
    }
}

/* 高分辨率屏幕适配 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .game-card,
    .wordbank-card,
    .rank-card,
    .modal,
    .result-card {
        border-width: 2.5px;
    }
}

/* 暗色模式支持（可选） */
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #1A1A2E;
        --bg-pattern: #16213E;
        --bg-dark: #0F3460;
        --card-bg: #1F1F3A;
        --text: #EAEAEA;
        --text-secondary: #B0B0B0;
        --text-light: #808080;
        --border: #3A3A5A;
    }

    body::before {
        opacity: 0.15;
    }

    .navbar {
        background: linear-gradient(135deg, var(--card-bg) 0%, #2A2A4A 100%);
    }

    .game-card,
    .wordbank-card,
    .rank-card {
        background: var(--card-bg);
    }

    .btn-outline {
        border-color: var(--primary);
        color: var(--primary);
    }

    .btn-outline:hover {
        background: var(--primary);
        color: var(--text);
    }

    .form-input,
    .form-textarea,
    .form-select {
        background: var(--card-bg);
        color: var(--text);
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .footer,
    .fab,
    .modal-overlay,
    .result-overlay,
    .countdown-overlay {
        display: none !important;
    }

    body {
        background: #fff;
    }

    .game-card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .game-card:hover,
    .btn:hover,
    .wordbank-card:hover {
        transform: none;
    }
}

/* 横屏模式优化 */
@media (orientation: landscape) and (max-height: 500px) {
    .navbar .container {
        height: 48px;
    }

    .game-area {
        padding: 8px;
    }

    .game-status-bar {
        padding: 6px 12px;
    }

    .game-status-bar .stat {
        padding: 4px 10px;
        font-size: 12px;
    }

    .result-card {
        padding: 20px;
    }

    .result-card .result-emoji {
        font-size: 40px;
    }

    .result-card .result-title {
        font-size: 18px;
    }

    .result-card .result-score {
        font-size: 32px;
    }

    .countdown-number {
        font-size: 80px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .game-card:hover,
    .wordbank-card:hover,
    .btn:hover {
        transform: none;
        box-shadow: inherit;
    }

    .game-card:active,
    .wordbank-card:active {
        transform: scale(0.98);
    }

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

    .match-item,
    .letter-box,
    .option-btn,
    .memory-card {
        min-height: 48px;
    }
}