/* 響應式設計樣式 */

/* 大螢幕桌面 (1200px+) */
@media (min-width: 1200px) {
    .container {
        max-width: 1200px;
    }
    
    .grid-xl-5 {
        grid-template-columns: repeat(5, 1fr);
    }
    
    .grid-xl-6 {
        grid-template-columns: repeat(6, 1fr);
    }
}

/* 中等桌面 (992px - 1199px) */
@media (max-width: 1199px) {
    .container {
        max-width: 960px;
    }
    
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 平板橫向 (768px - 991px) */
@media (max-width: 991px) {
    .container {
        max-width: 720px;
        padding: 0 var(--spacing-sm);
    }
    
    /* 導航調整 */
    .nav {
        gap: var(--spacing-sm);
    }
    
    .nav a {
        padding: var(--spacing-xs);
        font-size: 0.9rem;
    }
    
    /* 網格調整 */
    .grid-4,
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 欄位調整 */
    .col-3 {
        flex: 0 0 50%;
    }
    
    /* 字體大小調整 */
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.4rem; }
    
    /* 間距調整 */
    .page-header {
        padding: var(--spacing-md) 0;
    }
    
    .main {
        padding: var(--spacing-md) 0;
    }
}

/* 平板直向 (576px - 767px) */
@media (max-width: 767px) {
    .container {
        max-width: 540px;
        padding: 0 var(--spacing-sm);
    }
    
    /* 頭部調整 */
    .header {
        padding: 0.2rem 0;
    }
    
    .header .container {
        position: relative;
    }
    
    .logo {
        font-size: 1rem;
    }
    
    .logo-image {
        width: 24px;
        height: 24px;
    }
    
    /* 手機選單按鈕顯示 */
    .mobile-menu-toggle {
        display: flex;
    }
    
    /* 導航選單隱藏在手機上 */
    .nav-container {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--primary-color);
        box-shadow: var(--shadow-medium);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
    }
    
    .nav-container.show {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav {
        flex-direction: column;
        padding: 1rem 0;
    }
    
    .nav > li {
        width: 100%;
    }
    
    .nav > li > a {
        padding: 0.75rem 1rem;
        border-radius: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    /* 子選單在手機上直接顯示 */
    .nav-submenu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background-color: rgba(0, 0, 0, 0.1);
        box-shadow: none;
        border-radius: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .nav-dropdown:hover .nav-submenu,
    .nav-dropdown.active .nav-submenu {
        max-height: 200px;
    }
    
    .nav-submenu a {
        color: rgba(255, 255, 255, 0.8) !important;
        padding-left: 2rem;
    }
    
    .nav-submenu a:hover {
        background-color: rgba(255, 255, 255, 0.1) !important;
        color: white !important;
    }
    
    /* 搜索框調整 */
    .header-actions {
        gap: 0.4rem;
        align-items: center;
    }
    
    .header .search-box {
        height: 28px;
    }
    
    .header .search-input {
        width: 120px;
        font-size: 0.75rem;
        height: 28px;
        padding: 0.25rem 2rem 0.25rem 0.6rem;
        box-sizing: border-box;
        vertical-align: middle;
    }
    
    .header .search-input:focus {
        width: 150px;
    }
    
    .header .search-button {
        padding: 0.15rem;
        top: 50%;
        transform: translateY(-50%);
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .header .search-button svg {
        width: 14px;
        height: 14px;
    }
    
    /* 語言切換器簡化 */
    .language-current {
        padding: 0.15rem 0.3rem;
        min-width: 30px;
        height: 28px;
        font-size: 0.7rem;
        display: flex;
        align-items: center;
        justify-content: center;
        box-sizing: border-box;
    }
    
    .language-code {
        font-size: 0.65rem;
    }
    
    .language-dropdown {
        min-width: 120px;
        margin-top: 0.1rem;
    }
    
    .language-option {
        padding: 0.3rem 0.5rem;
        font-size: 0.75rem;
    }
    
    /* 網格調整 */
    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }
    
    /* 欄位調整 */
    .col-6,
    .col-4,
    .col-3 {
        flex: 0 0 100%;
        margin-bottom: var(--spacing-sm);
    }
    
    /* 卡片調整 */
    .card-content {
        padding: var(--spacing-sm);
    }
    
    .card-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    /* 字體大小調整 */
    html {
        font-size: 14px;
    }
    
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    /* 按鈕調整 */
    .btn {
        width: 100%;
        text-align: center;
        margin-bottom: var(--spacing-xs);
    }
    
    /* 搜索框調整 */
    .search-input {
        font-size: 16px; /* 防止iOS縮放 */
    }
    
    /* 分頁調整 */
    .pagination {
        flex-wrap: wrap;
        gap: 0.25rem;
    }
    
    .pagination a,
    .pagination span {
        padding: 0.4rem 0.6rem;
        font-size: 0.85rem;
    }
    
    /* Footer調整 */
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .social-links {
        gap: var(--spacing-xs);
    }
    
    .social-link {
        width: 36px;
        height: 36px;
    }
}

/* 小手機 (320px - 575px) */
@media (max-width: 575px) {
    .container {
        padding: 0 var(--spacing-xs);
    }
    
    /* 更小的字體 */
    html {
        font-size: 13px;
    }
    
    h1 { font-size: 1.6rem; }
    h2 { font-size: 1.3rem; }
    h3 { font-size: 1.1rem; }
    
    /* 更緊湊的間距 */
    :root {
        --spacing-xs: 0.4rem;
        --spacing-sm: 0.8rem;
        --spacing-md: 1.5rem;
        --spacing-lg: 2.5rem;
        --spacing-xl: 3rem;
    }
    
    /* 頁面標題調整 */
    .page-header {
        padding: var(--spacing-sm) 0;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
    
    /* 導航進一步簡化 */
    .nav a {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
    }
    
    /* 卡片更緊湊 */
    .card-content {
        padding: var(--spacing-xs);
    }
    
    .card-title {
        font-size: 1.1rem;
    }
    
    .card-description {
        font-size: 0.9rem;
    }
    
    /* 標籤更小 */
    .tag {
        font-size: 0.75rem;
        padding: 0.2rem 0.4rem;
    }
}

/* 觸控設備優化 */
@media (hover: none) and (pointer: coarse) {
    /* 增加可點擊區域 */
    .nav a,
    .btn,
    .language-current {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* 移除懸停效果 */
    .card:hover {
        transform: none;
        box-shadow: var(--shadow-light);
    }
    
    .btn:hover {
        transform: none;
    }
}

/* 高對比度模式支援 */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000;
        --text-light: #333;
        --shadow-light: 0 2px 4px rgba(0,0,0,0.3);
        --shadow-medium: 0 4px 8px rgba(0,0,0,0.4);
        --shadow-heavy: 0 8px 16px rgba(0,0,0,0.5);
    }
    
    .card {
        border: 2px solid var(--border-color);
    }
    
    .btn {
        border: 2px solid var(--accent-color);
    }
}

/* 減少動畫偏好 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .spinner {
        animation: none;
        border-top-color: var(--accent-color);
    }
}

/* 暗色主題支援 */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #1a1a1a;
        --secondary-color: #2d2d2d;
        --text-color: #e0e0e0;
        --text-light: #b0b0b0;
        --background-color: #121212;
        --background-light: #1e1e1e;
        --border-color: #404040;
    }
    
    .card {
        background-color: var(--background-light);
        border: 1px solid var(--border-color);
    }
    
    .search-input {
        background-color: var(--background-light);
        color: var(--text-color);
        border-color: var(--border-color);
    }
    
    .tag {
        background-color: var(--secondary-color);
        border-color: var(--border-color);
        color: var(--text-color);
    }
}

/* 列印樣式 */
@media print {
    * {
        color: #000 !important;
        background: transparent !important;
        box-shadow: none !important;
    }
    
    .header,
    .footer,
    .nav,
    .language-switcher,
    .search-box,
    .btn {
        display: none !important;
    }
    
    .main {
        padding: 0;
        margin: 0;
    }
    
    .card {
        break-inside: avoid;
        border: 1px solid #ccc;
        margin-bottom: 1rem;
    }
    
    a[href]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
    
    img {
        max-width: 100% !important;
        height: auto !important;
    }
}