/*
 * EC Shop City - 響應式樣式表
 * 版本: 2.0
 * 更新日期: 2026-02-06
 */

/* ========================================
   大螢幕 (1440px 以上)
======================================== */
@media (min-width: 1441px) {
    .container {
        padding: 0 var(--spacing-lg);
    }

    .hero-title {
        font-size: 60px;
    }

    .section-title {
        font-size: 46px;
    }
}

/* ========================================
   桌面 (1024px - 1440px)
======================================== */
@media (max-width: 1440px) {
    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
        gap: var(--spacing-lg);
    }

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

/* ========================================
   小桌面 / 大平板 (992px - 1024px)
======================================== */
@media (max-width: 1024px) {
    :root {
        --spacing-xxl: 80px;
    }

    .hero-title {
        font-size: 42px;
    }

    .section-title {
        font-size: 34px;
    }

    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

    .clients-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .price-card.featured {
        transform: none;
    }
}

/* ========================================
   平板 (768px - 991px)
======================================== */
@media (max-width: 991px) {
    /* 導航 - 顯示漢堡菜單 */
    .hamburger {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        max-width: 400px;
        height: 100vh;
        background: var(--color-white);
        flex-direction: column;
        justify-content: flex-start;
        padding: 100px var(--spacing-lg) var(--spacing-lg);
        box-shadow: -10px 0 40px rgba(0,0,0,0.1);
        transition: var(--transition-slow);
        z-index: 1000;
        overflow-y: auto;
    }

    .main-nav.active {
        right: 0;
    }

    .nav-menu {
        flex-direction: column;
        width: 100%;
        gap: 0;
    }

    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-link {
        padding: 18px 0;
        font-size: 17px;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .nav-dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        max-height: 0;
        overflow: hidden;
        padding: 0;
        background: var(--color-bg-light);
        border-radius: 0;
        transition: max-height var(--transition-normal);
    }

    .nav-item.dropdown-open .nav-dropdown {
        max-height: 500px;
        padding: var(--spacing-xs) 0;
    }

    .dropdown-link {
        padding: 14px 20px;
    }

    .header-cta {
        flex-direction: column;
        width: 100%;
        margin: var(--spacing-lg) 0 0;
        gap: var(--spacing-sm);
    }

    .header-cta .btn {
        width: 100%;
        justify-content: center;
    }

    /* 導航遮罩 */
    .nav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.5);
        z-index: 999;
        opacity: 0;
        transition: var(--transition-normal);
    }

    .nav-overlay.active {
        display: block;
        opacity: 1;
    }

    /* Hero */
    .hero {
        min-height: auto;
        padding: 140px 0 80px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 17px;
    }

    .hero-stats {
        gap: var(--spacing-lg);
    }

    .stat-number {
        font-size: 40px;
    }

    /* 區塊 */
    .section-title {
        font-size: 30px;
    }

    .section-desc {
        font-size: 16px;
    }

    /* 網格 */
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

    /* 特色列表 */
    .features-list {
        grid-template-columns: 1fr;
    }

    /* 頁面 Banner */
    .page-banner {
        padding: 120px 0 50px;
    }

    .page-title {
        font-size: 32px;
    }

    /* CTA */
    .cta-title {
        font-size: 28px;
    }
}

/* ========================================
   大手機 (576px - 767px)
======================================== */
@media (max-width: 767px) {
    :root {
        --spacing-xl: 40px;
        --spacing-xxl: 60px;
    }

    html {
        font-size: 15px;
    }

    /* Header */
    .header-inner {
        height: 70px;
    }

    .logo img {
        height: 38px;
    }

    .logo-text {
        font-size: 18px;
    }

    /* Hero */
    .hero {
        padding: 120px 0 60px;
    }

    .hero-title {
        font-size: 30px;
    }

    .hero-subtitle {
        font-size: 16px;
        margin-bottom: var(--spacing-md);
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }

    .stat-item {
        flex: 1 1 45%;
    }

    .stat-number {
        font-size: 36px;
    }

    /* 區塊 */
    .section {
        padding: var(--spacing-xl) 0;
    }

    .section-header {
        margin-bottom: var(--spacing-lg);
    }

    .section-title {
        font-size: 26px;
    }

    /* 網格 */
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    /* 卡片 */
    .card {
        padding: var(--spacing-md);
    }

    .service-card {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    /* 價格卡片 */
    .price-amount {
        font-size: 40px;
    }

    /* 統計 */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .stats-number {
        font-size: 40px;
    }

    .stats-label {
        font-size: 14px;
    }

    /* Footer */
    .footer {
        padding-top: var(--spacing-xl);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .footer-brand {
        max-width: 100%;
        text-align: center;
    }

    .footer-brand .logo {
        justify-content: center;
    }

    .footer-title {
        margin-top: var(--spacing-sm);
    }

    .footer-social {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    /* 客戶展示 */
    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 頁面 Banner */
    .page-banner {
        padding: 110px 0 40px;
    }

    .page-title {
        font-size: 28px;
    }

    .page-subtitle {
        font-size: 16px;
    }

    /* CTA */
    .cta-section {
        padding: var(--spacing-xl) 0;
    }

    .cta-title {
        font-size: 24px;
    }

    .cta-desc {
        font-size: 16px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-buttons .btn {
        width: 100%;
        max-width: 300px;
    }

    /* 表格 */
    .table th,
    .table td {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 13px;
    }

    /* WhatsApp 按鈕 */
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
    }

    .whatsapp-btn {
        width: 54px;
        height: 54px;
    }

    .whatsapp-btn svg {
        width: 28px;
        height: 28px;
    }

    /* 標題 */
    h1 { font-size: 32px; }
    h2 { font-size: 26px; }
    h3 { font-size: 22px; }
    h4 { font-size: 18px; }
}

/* ========================================
   小手機 (小於 576px)
======================================== */
@media (max-width: 575px) {
    :root {
        --spacing-md: 20px;
        --spacing-lg: 30px;
        --spacing-xl: 35px;
        --spacing-xxl: 50px;
    }

    html {
        font-size: 14px;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    /* Header */
    .header-inner {
        height: 65px;
        padding: 0 var(--spacing-sm);
    }

    .logo img {
        height: 34px;
    }

    .logo-text {
        font-size: 16px;
    }

    /* 導航 */
    .main-nav {
        max-width: 100%;
        padding: 90px var(--spacing-md) var(--spacing-md);
    }

    .nav-link {
        font-size: 16px;
        padding: 16px 0;
    }

    /* Hero */
    .hero {
        padding: 100px 0 50px;
    }

    .hero-title {
        font-size: 26px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .stat-item {
        flex: 1 1 100%;
    }

    .stat-number {
        font-size: 32px;
    }

    .stat-label {
        font-size: 13px;
    }

    /* 區塊 */
    .section-title {
        font-size: 24px;
    }

    .section-desc {
        font-size: 15px;
    }

    /* 按鈕 */
    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }

    .btn-lg {
        padding: 14px 28px;
        font-size: 15px;
    }

    /* 卡片 */
    .card {
        padding: var(--spacing-sm);
    }

    .card-icon {
        width: 50px;
        height: 50px;
    }

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

    /* 價格 */
    .price-amount {
        font-size: 36px;
    }

    .price-name {
        font-size: 18px;
    }

    /* 統計 */
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .stats-number {
        font-size: 32px;
    }

    /* 頁面 Banner */
    .page-banner {
        padding: 100px 0 35px;
    }

    .page-title {
        font-size: 24px;
    }

    .page-subtitle {
        font-size: 15px;
    }

    /* FAQ */
    .faq-question {
        padding: var(--spacing-sm);
        font-size: 15px;
    }

    .faq-answer {
        font-size: 14px;
    }

    /* 客戶展示 */
    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .client-logo {
        padding: var(--spacing-sm);
        min-height: 80px;
    }

    .client-logo img {
        max-height: 40px;
    }

    /* Footer */
    .footer-links a {
        font-size: 13px;
    }

    .footer-contact-item {
        font-size: 13px;
    }

    .footer-bottom {
        font-size: 12px;
    }

    /* 標題 */
    h1 { font-size: 28px; }
    h2 { font-size: 24px; }
    h3 { font-size: 20px; }
    h4 { font-size: 17px; }

    /* 內容區域 */
    .content-area h2 {
        font-size: 22px;
    }

    .content-area h3 {
        font-size: 18px;
    }
}

/* ========================================
   超小螢幕 (小於 375px)
======================================== */
@media (max-width: 374px) {
    html {
        font-size: 13px;
    }

    .hero-title {
        font-size: 24px;
    }

    .section-title {
        font-size: 22px;
    }

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

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

/* ========================================
   列印樣式
======================================== */
@media print {
    .header,
    .footer,
    .whatsapp-float,
    .hamburger,
    .nav-overlay {
        display: none !important;
    }

    .hero {
        padding-top: 0;
        min-height: auto;
    }

    .section {
        padding: 20px 0;
    }

    body {
        font-size: 12pt;
        color: #000;
        background: #fff;
    }

    a {
        color: #000;
        text-decoration: underline;
    }

    .btn {
        border: 1px solid #000;
        background: none !important;
        color: #000 !important;
    }
}

/* ========================================
   高對比度模式
======================================== */
@media (prefers-contrast: high) {
    :root {
        --color-primary: #0077b6;
        --color-secondary: #005f8a;
        --color-text: #000000;
        --color-border: #000000;
    }

    .btn-primary {
        border: 2px solid var(--color-white);
    }
}

/* ========================================
   減少動畫模式
======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* ========================================
   橫向模式特殊處理
======================================== */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 100px 0 40px;
    }

    .hero-stats {
        display: none;
    }

    .nav-item {
        border-bottom: none;
    }

    .nav-link {
        padding: 12px 0;
    }
}

/* ========================================
   觸控設備優化
======================================== */
@media (hover: none) and (pointer: coarse) {
    .nav-item:hover .nav-dropdown {
        opacity: 0;
        visibility: hidden;
    }

    .nav-item.dropdown-open .nav-dropdown {
        opacity: 1;
        visibility: visible;
    }

    .card:hover {
        transform: none;
    }

    .btn:hover {
        transform: none;
    }

    /* 增加觸控目標大小 */
    .nav-link,
    .dropdown-link,
    .footer-links a {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
}