/* ========== CSS 变量 ========== */
:root {
    --color-food: #FF6B35;
    --color-food-light: #fff3ed;
    --color-fun: #00A6A6;
    --color-fun-light: #e6f7f7;
    --color-primary: #4F46E5;
    --color-primary-light: #eef2ff;
    --color-danger: #ef4444;
    --color-danger-light: #fef2f2;
    --color-success: #10b981;
    --color-success-light: #ecfdf5;
    --color-warning: #f59e0b;
    --color-warning-light: #fffbeb;
    --color-expired: #9ca3af;
    --color-expired-light: #f3f4f6;

    --bg-body: #f5f6fa;
    --bg-card: #ffffff;
    --bg-hover: #f9fafb;

    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --text-white: #ffffff;

    --border-color: #e5e7eb;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);

    --transition: all 0.2s ease;

    --tab-height: 60px;
    --header-height: 56px;
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* ========== Reset ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
button { cursor: pointer; border: none; background: none; font-family: inherit; font-size: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; outline: none; }
input[type="text"], input[type="number"], input[type="date"], select, textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: #fff;
    transition: var(--transition);
}
input:focus, select:focus, textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79,70,229,0.1);
}
textarea { resize: vertical; }

/* ========== PWA 安装横幅 ========== */
.pwa-install-banner {
    position: fixed;
    bottom: calc(var(--tab-height) + var(--safe-bottom) + 8px);
    left: 16px;
    right: 16px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    z-index: 900;
    animation: slideUp 0.4s ease;
    border: 1px solid var(--border-color);
}
.pwa-banner-content {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
}
.pwa-banner-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    flex-shrink: 0;
}
.pwa-banner-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}
.pwa-banner-text strong { font-size: 15px; color: var(--text-primary); }
.pwa-banner-text span { font-size: 13px; color: var(--text-secondary); }
.pwa-banner-install {
    padding: 10px 20px;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    transition: var(--transition);
}
.pwa-banner-install:hover { background: #4338ca; }
.pwa-banner-dismiss {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    color: var(--text-tertiary);
    transition: var(--transition);
    flex-shrink: 0;
}
.pwa-banner-dismiss:hover { background: var(--bg-body); color: var(--text-primary); }

/* ========== 顶部导航 ========== */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    height: var(--header-height);
    background: var(--bg-card);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-left { display: flex; align-items: center; gap: 10px; }
.header-left .logo { font-size: 28px; }
.header-left h1 { font-size: 20px; font-weight: 700; color: var(--text-primary); }
.header-right { display: flex; align-items: center; gap: 16px; }

/* 桌面/移动端头部切换 */
.desktop-header { display: flex; }
.mobile-header { display: none; }

.view-toggle {
    display: flex;
    background: var(--bg-body);
    border-radius: var(--border-radius-sm);
    padding: 3px;
}
.toggle-btn {
    padding: 7px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}
.toggle-btn.active {
    background: var(--bg-card);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    padding: 9px 20px;
    background: var(--color-primary);
    color: var(--text-white);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
}
.btn-primary:hover { background: #4338ca; transform: translateY(-1px); box-shadow: var(--shadow-md); }

/* ========== 底部 Tab 导航 ========== */
.bottom-tabs {
    display: none; /* 桌面端隐藏 */
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--tab-height) + var(--safe-bottom));
    padding-bottom: var(--safe-bottom);
    background: var(--bg-card);
    box-shadow: 0 -1px 8px rgba(0,0,0,0.08);
    z-index: 500;
    justify-content: space-around;
    align-items: center;
}
.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    height: var(--tab-height);
    width: 72px;
    color: var(--text-tertiary);
    transition: var(--transition);
    position: relative;
}
.tab-item.active { color: var(--color-primary); }
.tab-item.active .tab-icon { transform: scale(1.15); }
.tab-icon { font-size: 24px; line-height: 1; }
.tab-label { font-size: 11px; font-weight: 500; }

/* 添加按钮（中央突出） */
.tab-add {
    position: relative;
    top: -12px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-primary);
    box-shadow: 0 4px 16px rgba(79,70,229,0.35);
    justify-content: center;
    gap: 0;
}
.tab-add:hover { transform: scale(1.08); box-shadow: 0 6px 20px rgba(79,70,229,0.4); }
.tab-add-icon {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    line-height: 1;
}

/* ========== 统计栏 ========== */
.stats-bar {
    display: flex;
    gap: 12px;
    padding: 16px 20px;
    overflow-x: auto;
    scrollbar-width: none;
}
.stats-bar::-webkit-scrollbar { display: none; }
.stat-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    min-width: 130px;
    border: 1px solid transparent;
    transition: var(--transition);
    flex-shrink: 0;
}
.stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.stat-icon { font-size: 24px; line-height: 1; }
.stat-info { display: flex; flex-direction: column; }
.stat-label { font-size: 12px; color: var(--text-tertiary); white-space: nowrap; }
.stat-value { font-size: 20px; font-weight: 700; color: var(--text-primary); }
.stat-pending { border-color: var(--color-primary-light); }
.stat-pending .stat-value { color: var(--color-primary); }
.stat-warning { border-color: #fde68a; }
.stat-warning .stat-value { color: var(--color-warning); }
.stat-food { border-color: #fed7aa; }
.stat-food .stat-value { color: var(--color-food); }
.stat-fun { border-color: #99f6e4; }
.stat-fun .stat-value { color: var(--color-fun); }

/* ========== 筛选栏 ========== */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 20px 14px;
    flex-wrap: wrap;
}
.filter-group { display: flex; align-items: center; gap: 8px; }
.filter-label { font-size: 13px; color: var(--text-tertiary); font-weight: 500; white-space: nowrap; }
.filter-select {
    padding: 7px 14px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: #fff;
    font-size: 14px;
    cursor: pointer;
}
.filter-search { flex: 1; min-width: 180px; }
.search-input {
    width: 100%;
    padding: 8px 16px;
    border: 1.5px solid var(--border-color);
    border-radius: 20px;
    font-size: 14px;
    background: var(--bg-card);
}

.filter-chips { display: flex; gap: 6px; }
.chip {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    background: var(--bg-body);
    color: var(--text-secondary);
    transition: var(--transition);
    border: 1.5px solid transparent;
}
.chip:hover { background: #e8eaed; }
.chip.active { background: var(--color-primary); color: #fff; }
.chip.active.chip-food { background: var(--color-food); }
.chip.active.chip-fun { background: var(--color-fun); }

/* ========== 列表视图 ========== */
.list-view { display: none; padding: 0 20px 100px; }
.list-view.active { display: block; }

.voucher-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 16px;
}

/* ========== 团购券卡片 ========== */
.voucher-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
    border: 1px solid var(--border-color);
}
.voucher-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }

.voucher-card.redeemed { opacity: 0.65; }
.voucher-card.redeemed .card-stamp {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 2;
}

.card-stamp {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: var(--color-success);
    color: #fff;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    transform: rotate(-8deg);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
}
.card-header-left { display: flex; align-items: center; gap: 8px; }
.card-cat-badge {
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}
.card-cat-badge.food { background: var(--color-food-light); color: var(--color-food); }
.card-cat-badge.fun { background: var(--color-fun-light); color: var(--color-fun); }
.card-platform {
    font-size: 12px;
    color: var(--text-tertiary);
    background: var(--bg-body);
    padding: 3px 8px;
    border-radius: 4px;
}
.card-status-badge {
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 12px;
}
.card-status-badge.expiring { background: var(--color-warning-light); color: var(--color-warning); }
.card-status-badge.expired { background: var(--color-expired-light); color: var(--color-expired); }

.card-body { padding: 16px 18px; }
.card-merchant { font-size: 17px; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.card-product { font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; }
.card-amount { font-size: 24px; font-weight: 700; color: var(--color-food); }
.card-amount.fun { color: var(--color-fun); }
.card-amount.redeemed { color: var(--text-tertiary); text-decoration: line-through; }

.card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--border-color);
}
.card-meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--text-secondary);
}
.card-meta-item .meta-icon { font-size: 14px; }
.card-meta-item.urgent { color: var(--color-warning); font-weight: 600; }
.card-meta-item.expired { color: var(--color-expired); }

.card-footer {
    display: flex;
    gap: 8px;
    padding: 12px 18px;
    background: var(--bg-hover);
    border-top: 1px solid var(--border-color);
}
.card-btn {
    flex: 1;
    padding: 10px;
    border-radius: var(--border-radius-sm);
    font-size: 13px;
    font-weight: 600;
    transition: var(--transition);
    text-align: center;
    min-height: 44px; /* 触摸友好 */
}
.card-btn-redeem {
    background: var(--color-success);
    color: #fff;
}
.card-btn-redeem:hover { background: #059669; }
.card-btn-edit {
    background: #fff;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}
.card-btn-edit:hover { background: var(--bg-body); color: var(--text-primary); }
.card-btn-delete {
    background: #fff;
    color: var(--color-danger);
    border: 1px solid #fecaca;
    flex: 0 0 44px;
}
.card-btn-delete:hover { background: var(--color-danger-light); }

/* ========== 空状态 ========== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
}

/* ========== 地图视图 ========== */
.map-view { display: none; padding: 0 20px 100px; }
.map-view.active { display: flex; flex-direction: column; gap: 12px; }

.map-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}
.map-btn {
    padding: 8px 16px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    transition: var(--transition);
    min-height: 44px;
}
.map-btn:hover { background: #e0e7ff; }
.map-search-wrap { flex: 1; position: relative; }
.map-search-input {
    width: 100%;
    padding: 8px 16px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
}
.map-search-results {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: #fff;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    max-height: 300px;
    overflow-y: auto;
    z-index: 10;
    display: none;
}
.map-search-results.show { display: block; }
.search-result-item {
    padding: 12px 16px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}
.search-result-item:hover { background: var(--bg-body); }
.search-result-item:last-child { border-bottom: none; }
.search-result-title { font-size: 14px; font-weight: 500; color: var(--text-primary); }
.search-result-addr { font-size: 12px; color: var(--text-tertiary); margin-top: 2px; }

.map-legend { display: flex; gap: 12px; padding: 0 8px; }
.legend-item { display: flex; align-items: center; gap: 4px; font-size: 13px; color: var(--text-secondary); }
.legend-dot { width: 12px; height: 12px; border-radius: 50%; }
.legend-food { background: var(--color-food); }
.legend-fun { background: var(--color-fun); }

.map-container {
    width: 100%;
    height: calc(100vh - 260px);
    min-height: 400px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

/* ========== 弹窗 ========== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    align-items: flex-start;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
    overflow-y: auto;
}
.modal-overlay.show { display: flex; }

.modal {
    background: #fff;
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 640px;
    margin: 20px auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background: #fff;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    z-index: 1;
}
.modal-header h2 { font-size: 18px; font-weight: 700; }
.modal-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 18px;
    color: var(--text-secondary);
    transition: var(--transition);
}
.modal-close:hover { background: var(--bg-body); color: var(--text-primary); }

.modal-body { padding: 20px 24px; max-height: 60vh; overflow-y: auto; }

.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}
.form-group .req { color: var(--color-danger); }
.form-hint { font-size: 12px; color: var(--text-tertiary); margin-bottom: 8px; }

.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }

.category-toggle { display: flex; gap: 10px; }
.cat-btn {
    flex: 1;
    padding: 12px;
    border-radius: var(--border-radius-sm);
    border: 2px solid var(--border-color);
    background: #fff;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
    min-height: 44px;
}
.cat-btn:hover { border-color: #d1d5db; }
.cat-btn.active.cat-food { border-color: var(--color-food); background: var(--color-food-light); color: var(--color-food); }
.cat-btn.active.cat-fun { border-color: var(--color-fun); background: var(--color-fun-light); color: var(--color-fun); }

/* ========== 图片识别 OCR ========== */
.form-hint-inline { font-size: 12px; color: var(--text-tertiary); font-weight: 400; }
.ocr-group { margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px dashed var(--border-color); }

.ocr-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-hover);
    cursor: pointer;
    transition: var(--transition);
    overflow: hidden;
}
.ocr-upload-area:hover { border-color: var(--color-primary); background: var(--color-primary-light); }
.ocr-upload-area.drag-over { border-color: var(--color-primary); background: var(--color-primary-light); transform: scale(1.02); }
.ocr-upload-area.processing { pointer-events: none; border-style: solid; border-color: var(--color-primary); }

.ocr-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px 20px;
    gap: 8px;
}
.ocr-upload-icon { font-size: 36px; line-height: 1; }
.ocr-upload-text { font-size: 15px; font-weight: 600; color: var(--text-secondary); }
.ocr-upload-hint { font-size: 13px; color: var(--text-tertiary); }

.ocr-preview {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: #fff;
}
.ocr-preview img {
    max-width: 120px;
    max-height: 100px;
    object-fit: contain;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}
.ocr-btn-reupload {
    padding: 10px 14px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--border-radius-sm);
    font-size: 13px;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
    min-height: 44px;
}
.ocr-btn-reupload:hover { background: #e0e7ff; }

.ocr-progress {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: #fff;
}
.ocr-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    animation: ocrSpin 0.8s linear infinite;
}
@keyframes ocrSpin { to { transform: rotate(360deg); } }
.ocr-progress-info { flex: 1; }
.ocr-progress-text { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.ocr-progress-bar-wrap {
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}
.ocr-progress-bar {
    height: 100%;
    width: 0%;
    background: var(--color-primary);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.ocr-result-highlight {
    animation: ocrHighlight 1.5s ease;
}
@keyframes ocrHighlight {
    0% { background: var(--color-primary-light); box-shadow: 0 0 0 4px rgba(79,70,229,0.2); }
    100% { background: transparent; box-shadow: none; }
}

/* 细分类别选择器 */
.subcategory-wrap {
    display: flex;
    align-items: center;
    gap: 6px;
}
.subcategory-wrap select,
.subcategory-wrap input {
    flex: 1;
}
.subcat-toggle-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1.5px solid var(--border-color);
    background: var(--bg-card);
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}
.subcat-toggle-btn:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
}
.subcat-toggle-btn.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* 位置选取器 */
.location-picker {
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}
.picker-search-wrap { position: relative; border-bottom: 1px solid var(--border-color); }
.picker-search-wrap input {
    border: none;
    border-radius: 0;
    padding: 10px 14px;
}
.picker-search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: var(--shadow-md);
    max-height: 200px;
    overflow-y: auto;
    z-index: 10;
    display: none;
}
.picker-search-results.show { display: block; }
.picker-map { height: 280px; width: 100%; }

.modal-footer {
    display: flex;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    justify-content: flex-end;
}
.btn-cancel {
    padding: 10px 24px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    background: #fff;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    min-height: 44px;
}
.btn-cancel:hover { background: var(--bg-body); }
.btn-save {
    padding: 10px 28px;
    border-radius: var(--border-radius-sm);
    background: var(--color-primary);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    min-height: 44px;
}
.btn-save:hover { background: #4338ca; }

/* ========== 确认对话框 ========== */
.confirm-overlay { z-index: 1100; }
.confirm-dialog {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 28px 32px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    animation: slideUp 0.2s ease;
}
.confirm-dialog p { font-size: 16px; color: var(--text-primary); margin-bottom: 20px; }
.confirm-buttons { display: flex; gap: 12px; justify-content: center; }
.btn-danger {
    padding: 10px 28px;
    border-radius: var(--border-radius-sm);
    background: var(--color-danger);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    min-height: 44px;
}
.btn-danger:hover { background: #dc2626; }

/* ========== 导入弹窗 ========== */
.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}
.btn-secondary:hover { background: var(--bg-hover); border-color: var(--color-primary); color: var(--color-primary); }
.btn-icon {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}
.btn-icon:hover { background: var(--bg-hover); }

.import-modal { max-width: 520px; }
.import-body { padding: 20px; }
.import-desc { margin-bottom: 16px; color: var(--text-secondary); }
.import-methods {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 16px;
}
.import-method {
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}
.import-method:hover { border-color: var(--color-primary); background: var(--bg-hover); }
.import-method-icon { font-size: 32px; margin-bottom: 8px; }
.import-method-title { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.import-method-desc { font-size: 12px; color: var(--text-tertiary); }
.import-method-highlight { border: 2px solid var(--color-primary); background: var(--color-primary-light); }
.import-method-highlight:hover { background: var(--bg-hover); box-shadow: 0 2px 8px rgba(124,58,237,0.2); }

.import-preview { margin-top: 16px; }
.import-preview h3 { font-size: 16px; margin-bottom: 12px; }
.import-stats {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}
.import-stat-item {
    background: var(--bg-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 13px;
}
.import-stat-item strong { color: var(--color-primary); }
.import-preview-list {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
}
.import-preview-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
}
.import-preview-item:last-child { border-bottom: none; }
.import-preview-merchant { font-weight: 500; }
.import-preview-product { color: var(--text-secondary); }
.import-preview-amount { color: var(--color-primary); font-weight: 600; }
.import-preview-duplicate { color: var(--color-warning); font-size: 11px; }

.import-options { margin-top: 8px; }
.import-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    margin-bottom: 8px;
}
.import-checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
}

@media (max-width: 480px) {
    .import-methods { grid-template-columns: 1fr; }
    .import-modal { margin: 0; max-width: 100%; }
}

/* ========== Toast ========== */
.toast {
    position: fixed;
    bottom: calc(var(--tab-height) + var(--safe-bottom) + 20px);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 12px 28px;
    background: var(--text-primary);
    color: #fff;
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    opacity: 0;
    transition: all 0.3s ease;
    white-space: nowrap;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
.toast.success { background: var(--color-success); }
.toast.error { background: var(--color-danger); }
.toast.warning { background: var(--color-warning); }

/* ========== 滚动条美化 ========== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #9ca3af; }

/* ========== 响应式：平板 ========== */
@media (max-width: 768px) {
    .desktop-header { display: none; }
    .mobile-header { display: flex; padding: 0 16px; }

    .stats-bar { padding: 12px 12px; gap: 8px; }
    .stat-card { min-width: 100px; padding: 10px 12px; }
    .stat-icon { font-size: 20px; }
    .stat-value { font-size: 17px; }
    .stat-label { font-size: 11px; }

    .filter-bar { padding: 0 12px 12px; gap: 10px; }
    .list-view, .map-view { padding: 0 12px 120px; }
    .voucher-grid { grid-template-columns: 1fr; }
    .form-row { flex-direction: column; gap: 0; }
    .map-container { height: calc(100vh - 280px); }
    .map-toolbar { flex-wrap: wrap; }
    .map-legend { width: 100%; justify-content: center; }

    /* 底部 Tab 显示 */
    .bottom-tabs { display: flex; }
    /* Toast 位置调整 */
    .toast { bottom: calc(var(--tab-height) + var(--safe-bottom) + 16px); }
}

/* ========== 响应式：手机小屏 ========== */
@media (max-width: 480px) {
    .mobile-header { height: 48px; }
    .mobile-header .logo { font-size: 24px; }
    .mobile-header h1 { font-size: 17px; }

    .stats-bar { padding: 8px 10px; gap: 6px; }
    .stat-card { min-width: 88px; padding: 8px 10px; }
    .stat-icon { font-size: 18px; }
    .stat-value { font-size: 16px; }
    .stat-label { font-size: 10px; }

    .filter-bar { padding: 0 10px 10px; flex-wrap: wrap; gap: 8px; }
    .filter-group { gap: 6px; }
    .filter-label { font-size: 12px; }

    .list-view, .map-view { padding: 0 10px 120px; }

    .voucher-grid { gap: 12px; }
    .card-header { padding: 12px 14px; }
    .card-body { padding: 14px; }
    .card-footer { padding: 10px 14px; gap: 6px; }

    /* 弹窗全屏化 */
    .modal-overlay { padding: 0; }
    .modal {
        max-width: 100%;
        margin: 0;
        height: 100%;
        border-radius: 0;
        animation: mobileSlideUp 0.3s ease;
    }
    .modal-header { padding: 14px 16px; border-radius: 0; }
    .modal-body { max-height: calc(100vh - 120px); padding: 16px; }
    .modal-footer { padding: 12px 16px; }

    .picker-map { height: 200px; }

    /* 地图全屏 */
    .map-container { height: calc(100vh - 240px); min-height: 300px; border-radius: 8px; }
}

@keyframes mobileSlideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

/* ========== PWA 独立模式优化 ========== */
@media (display-mode: standalone) {
    /* 在 PWA 独立模式下隐藏浏览器特有元素 */
    .pwa-install-banner { display: none !important; }
    /* 更紧凑的布局 */
    .stats-bar { padding: 10px 12px; }
    .list-view, .map-view { padding-bottom: calc(var(--tab-height) + var(--safe-bottom) + 16px); }
}