/**
 * 移动端体验增强样式
 * 安全区域适配、触摸反馈、手势优化
 */

/* ===== 安全区域适配 ===== */
body {
    /* iOS安全区域支持 */
    padding-top: env(safe-area-inset-top);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
    padding-bottom: env(safe-area-inset-bottom);
}

/* 固定定位元素的安全区域适配 */
.header {
    padding-top: max(8px, env(safe-area-inset-top));
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
    /* 在小屏幕上减小padding */
    padding-left: max(12px, env(safe-area-inset-left));
    padding-right: max(12px, env(safe-area-inset-right));
}

.bottom-tab-bar {
    padding-bottom: max(8px, env(safe-area-inset-bottom));
    padding-left: max(12px, env(safe-area-inset-left));
    padding-right: max(12px, env(safe-area-inset-right));
    /* 增加底部tab高度以适配刘海屏 */
    height: calc(60px + env(safe-area-inset-bottom));
}

.reader-toolbar {
    padding-bottom: max(8px, env(safe-area-inset-bottom));
    padding-left: max(12px, env(safe-area-inset-left));
    padding-right: max(12px, env(safe-area-inset-right));
}

/* ===== 触摸反馈增强 ===== */
/* Material Design涟漪效果 */
.ripple-container {
    position: relative;
    overflow: hidden;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* 按钮触摸态 */
@media (hover: none) {
    .btn:active {
        transform: scale(0.96);
        transition: transform 0.1s ease-out;
    }

    .card-interactive:active {
        transform: scale(0.98);
        transition: transform 0.1s ease-out;
    }

    .nav-link:active {
        background: var(--md-surface-container-highest);
    }

    .tool-btn:active {
        transform: scale(0.9);
    }
}

/* ===== 滑动手势优化 ===== */
.swipeable {
    touch-action: pan-y;
    user-select: none;
}

.swipe-action-left,
.swipe-action-right {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.swipe-action-left {
    left: 0;
    background: linear-gradient(90deg, #4caf50, transparent);
}

.swipe-action-right {
    right: 0;
    background: linear-gradient(270deg, #f44336, transparent);
}

.swipeable.swiping .swipe-action-left,
.swipeable.swiping .swipe-action-right {
    opacity: 1;
}

/* ===== 长按菜单 ===== */
.long-press-menu {
    position: fixed;
    background: var(--md-surface-container-highest);
    border-radius: var(--md-radius-md);
    box-shadow: var(--md-elevation-3);
    padding: 8px 0;
    min-width: 160px;
    z-index: 1000;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.long-press-menu.show {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
}

.long-press-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--md-on-surface);
    cursor: pointer;
    transition: background 0.2s ease;
}

.long-press-menu-item:active {
    background: var(--md-surface-container);
}

/* ===== 下拉刷新 ===== */
.pull-to-refresh {
    position: relative;
    overflow: hidden;
}

.pull-to-refresh-indicator {
    position: absolute;
    top: -60px;
    left: 0;
    right: 0;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
    z-index: 10;
}

.pull-to-refresh.pulling .pull-to-refresh-indicator {
    transform: translateY(60px);
}

.pull-to-refresh-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--md-outline-variant);
    border-top-color: var(--md-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ===== 底部抽屉 ===== */
.bottom-sheet {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--md-surface-container-lowest);
    border-radius: 28px 28px 0 0;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 200;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    padding-bottom: env(safe-area-inset-bottom);
}

.bottom-sheet.active {
    transform: translateY(0);
}

/* 背景遮罩 */
.bottom-sheet-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 199;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.bottom-sheet-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.bottom-sheet-handle {
    width: 40px;
    height: 4px;
    background: var(--md-outline-variant);
    border-radius: 2px;
    margin: 12px auto 8px;
    flex-shrink: 0; /* 不被压缩 */
}

.bottom-sheet-content {
    padding: 0 24px 24px;
    overflow-y: auto;
    flex: 1;
    /* iOS滚动优化 */
    -webkit-overflow-scrolling: touch;
}



/* ===== 虚拟键盘优化 ===== */
/* 键盘弹出时调整布局 */
@media (max-height: 500px) {
    .modal {
        max-height: 90vh;
        overflow-y: auto;
    }

    .main-content {
        padding-bottom: 60px;
    }
}

/* ===== 横屏优化 ===== */
@media (orientation: landscape) and (max-height: 600px) {
    .header {
        padding: 4px 16px;
    }

    .bottom-tab-bar {
        height: 50px;
    }

    .page-header h2 {
        font-size: 20px;
    }
}

/* ===== 滚动优化 ===== */
/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* iOS橡皮筋效果优化 */
.scroll-container {
    -webkit-overflow-scrolling: touch;
    overflow-scrolling: touch;
}

/* 自定义滚动条 - 移动端 */
@media (max-width: 768px) {
    ::-webkit-scrollbar {
        width: 4px;
        height: 4px;
    }

    ::-webkit-scrollbar-track {
        background: transparent;
    }

    ::-webkit-scrollbar-thumb {
        background: rgba(0, 0, 0, 0.15);
        border-radius: 2px;
    }
}

/* ===== 触摸目标尺寸优化 ===== */
@media (max-width: 768px) {
    /* 确保触摸目标至少44x44px */
    .btn,
    .nav-link,
    .tool-btn,
    a {
        min-height: 44px;
        min-width: 44px;
    }

    /* 增加表单元素的触摸区域 */
    input[type="checkbox"],
    input[type="radio"] {
        width: 24px;
        height: 24px;
    }
}

/* ===== 防止误触 ===== */
/* 禁用双击缩放 */
body {
    touch-action: manipulation;
}

/* 禁用长按选择 */
.no-select {
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}

/* ===== 加载状态优化 ===== */
.mobile-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-loading-spinner {
    width: 60px;
    height: 60px;
    background: var(--md-surface-container-lowest);
    border-radius: var(--md-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--md-elevation-3);
}

/* ===== 通知权限提示 ===== */
.notification-prompt {
    position: fixed;
    bottom: calc(60px + env(safe-area-inset-bottom));
    left: 16px;
    right: 16px;
    background: var(--md-surface-container-highest);
    border-radius: var(--md-radius-lg);
    padding: 16px;
    box-shadow: var(--md-elevation-2);
    transform: translateY(calc(100% + 60px));
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
}

.notification-prompt.show {
    transform: translateY(0);
}

/* ===== PWA安装提示 ===== */
.install-prompt {
    position: fixed;
    bottom: calc(60px + env(safe-area-inset-bottom));
    left: 16px;
    right: 16px;
    background: linear-gradient(135deg, var(--md-primary), #ff6b9d);
    color: white;
    border-radius: var(--md-radius-lg);
    padding: 16px;
    box-shadow: 0 8px 24px rgba(216, 27, 96, 0.4);
    transform: translateY(calc(100% + 60px));
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
    display: flex;
    align-items: center;
    gap: 12px;
}

.install-prompt.show {
    transform: translateY(0);
}

.install-prompt-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.install-prompt-content {
    flex: 1;
}

.install-prompt-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.install-prompt-desc {
    font-size: 13px;
    opacity: 0.9;
}

.install-prompt-actions {
    display: flex;
    gap: 8px;
}

.install-prompt-btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--md-radius-full);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    transition: background 0.2s ease;
}

.install-prompt-btn:active {
    background: rgba(255, 255, 255, 0.3);
}

.install-prompt-btn-primary {
    background: white;
    color: var(--md-primary);
}

.install-prompt-btn-primary:active {
    background: rgba(255, 255, 255, 0.9);
}

/* ==================== 滚动按钮 ==================== */
.scroll-top-btn {
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scroll-top-btn:active {
    transform: scale(0.9);
}

/* ==================== 漂浪导航按钮（MD3毛玻璃风格） ==================== */
.floating-nav-btn {
    position: fixed;
    right: 20px;
    bottom: 100px;
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.12),
        0 2px 8px rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    color: var(--md-on-surface);
    border: 1px solid rgba(255, 255, 255, 0.3);
    touch-action: none;
}

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

.floating-nav-btn.active {
    background: var(--md-primary);
    color: var(--md-on-primary);
    box-shadow: 
        0 12px 40px rgba(233, 30, 99, 0.3),
        0 4px 12px rgba(233, 30, 99, 0.2);
}

/* 漂浪导航菜单 */
.floating-nav-menu {
    position: fixed;
    right: 20px;
    bottom: 170px;
    width: 160px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border-radius: 20px;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.15),
        0 8px 24px rgba(0, 0, 0, 0.1);
    opacity: 0;
    transform: translateY(20px) scale(0.9);
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 998;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.floating-nav-menu.active {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.nav-menu-item {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-menu-item:last-child {
    border-bottom: none;
}

.nav-menu-item:hover,
.nav-menu-item:active {
    background: rgba(233, 30, 99, 0.08);
}

.nav-menu-icon {
    font-size: 20px;
    margin-right: 12px;
    flex-shrink: 0;
}

.nav-menu-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--md-on-surface);
}

/* 暗色主题 */
body[data-theme="dark"] .floating-nav-btn {
    background: rgba(40, 40, 40, 0.9);
    border-color: rgba(255, 255, 255, 0.1);
}

body[data-theme="dark"] .floating-nav-menu {
    background: rgba(40, 40, 40, 0.95);
    border-color: rgba(255, 255, 255, 0.1);
}

body[data-theme="dark"] .nav-menu-item {
    border-bottom-color: rgba(255, 255, 255, 0.05);
}

/* ==================== 筛选触发按钮 - 已禁用 ==================== */
.filter-trigger-btn {
    display: none !important; /* 已禁用，改用漂浮导航 */
    /* position: fixed !important;
    bottom: 80px;
    right: 20px;
    z-index: 199;
    cursor: pointer;
    border-radius: 50%;
    width: 56px;
    height: 56px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 2px; */
}

.filter-trigger-btn:active {
    transform: scale(0.9);
}

/* ==================== 模态框动画 ==================== */
.modal.active .modal-dialog {
    animation: modalFadeIn 0.2s ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ==================== 虚拟滚动列表 ==================== */
.virtual-scroll-container {
    overflow-y: auto;
    position: relative;
}