* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

:root {
    --primary: #ff6700;
    --primary-light: #fff3e0;
    --success: #00c853;
    --danger: #ff4444;
    --warning: #ffab00;
    --purple: #7B1FA2;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-500: #6c757d;
    --gray-700: #495057;
    --gray-900: #212529;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 24px rgba(0,0,0,0.12);
    --nav-height: 60px;
    --header-height: 52px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
    background: var(--gray-100);
    color: var(--gray-900);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Toast */
.toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    background: var(--gray-900);
    color: white;
    padding: 12px 24px;
    border-radius: 24px;
    font-size: 14px;
    z-index: 10000;
    transition: transform 0.3s ease;
    max-width: 90vw;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.toast.show {
    transform: translateX(-50%) translateY(0);
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 9000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.2s ease;
}
.modal-overlay.show { display: flex; }
.modal-content {
    background: white;
    border-radius: var(--radius);
    width: 100%;
    max-width: 400px;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
}
.modal-title { font-size: 16px; font-weight: 600; }
.modal-close {
    width: 28px; height: 28px;
    border: none; background: var(--gray-200);
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
}
.modal-body { padding: 20px; }
.modal-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(30px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* Login */
.page-full {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #ff6700 0%, #ff8a33 100%);
    z-index: 8000;
}
.page-full.show { display: flex; }
.login-container {
    background: white;
    border-radius: var(--radius);
    padding: 40px 30px;
    width: 90%;
    max-width: 360px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}
.login-logo { font-size: 48px; margin-bottom: 12px; }
.login-title { font-size: 22px; color: var(--gray-900); margin-bottom: 4px; }
.login-subtitle { color: var(--gray-500); font-size: 14px; margin-bottom: 28px; }
.login-form { display: flex; flex-direction: column; gap: 14px; }
.login-hint { color: var(--gray-500); font-size: 12px; margin-top: 16px; }

/* App Layout */
.app-container { display: flex; flex-direction: column; min-height: 100vh; }
.app-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-height);
    background: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    border-bottom: 1px solid var(--gray-200);
    z-index: 100;
}
.header-title { font-size: 17px; font-weight: 600; color: var(--primary); }
.header-user {
    font-size: 13px;
    color: var(--gray-500);
    padding: 4px 10px;
    background: var(--gray-100);
    border-radius: 16px;
    cursor: pointer;
}
.app-content {
    flex: 1;
    padding-top: calc(var(--header-height) + 12px);
    padding-bottom: calc(var(--nav-height) + 12px);
    padding-left: 12px;
    padding-right: 12px;
}

/* Pages */
.page { display: none; }
.page.show { display: block; }

/* Card */
.card {
    background: white;
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 12px;
    box-shadow: var(--shadow);
}
.card-title { font-size: 18px; font-weight: 600; margin-bottom: 16px; color: var(--gray-900); }

/* Forms */
.form-group { margin-bottom: 14px; }
.form-label { display: block; font-size: 14px; font-weight: 500; color: var(--gray-700); margin-bottom: 6px; }
.form-input, .form-select {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s;
    background: white;
    -webkit-appearance: none;
}
.form-input:focus, .form-select:focus { border-color: var(--primary); }
.form-input-sm { padding: 8px 10px; font-size: 13px; }
.form-select-sm { padding: 8px 10px; font-size: 13px; width: auto; min-width: 80px; }

/* Buttons */
.btn-primary {
    padding: 12px 20px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
}
.btn-primary:active { transform: scale(0.97); }
.btn-primary:disabled { background: var(--gray-300); cursor: not-allowed; }
.btn-outline {
    padding: 12px 20px;
    background: white;
    color: var(--primary);
    border: 1.5px solid var(--primary);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}
.btn-outline:active { background: var(--primary-light); }
.btn-outline:disabled { border-color: var(--gray-300); color: var(--gray-300); cursor: not-allowed; }
.btn-secondary {
    padding: 12px 20px;
    background: var(--gray-200);
    color: var(--gray-700);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    cursor: pointer;
}
.btn-danger {
    padding: 12px 20px;
    background: var(--danger);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    cursor: pointer;
}
.btn-sm { padding: 8px 14px; font-size: 13px; border-radius: 6px; }
.btn-full { width: 100%; }
.btn-row { display: flex; gap: 12px; }
.btn-row > * { flex: 1; }

/* Price */
.price-display {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    text-align: center;
    padding: 16px 0;
}

/* Price + Quantity row */
.price-qty-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
    padding: 8px 0;
}
.price-qty-row .price-display {
    padding: 0;
    text-align: left;
    flex: 1;
    font-size: 26px;
}
.price-qty-row .quantity-control {
    margin-bottom: 0;
    flex-shrink: 0;
}

/* Quantity */
.quantity-control {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
}
.qty-btn {
    width: 40px; height: 40px;
    border: 1.5px solid var(--gray-300);
    background: white;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.2s;
}
.qty-btn:active { background: var(--gray-200); }
.qty-input {
    width: 60px; height: 40px;
    text-align: center;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 16px;
    outline: none;
}

/* Status tabs */
.status-tabs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}
.tab-btn {
    padding: 6px 12px;
    border: 1.5px solid var(--gray-300);
    background: white;
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}
.tab-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

/* Filter row */
.filter-row {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}
.filter-row .form-input { flex: 1; padding: 10px 12px; font-size: 14px; }

/* Summary */
.summary-bar {
    background: var(--primary-light);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
    display: none;
}
.summary-bar.show { display: block; }

/* Order card */
.order-card {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    padding: 14px;
    margin-bottom: 10px;
    transition: box-shadow 0.2s;
}
.order-card:active { box-shadow: var(--shadow); }
.order-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.order-no { font-size: 13px; color: var(--gray-500); }
.order-username { font-size: 12px; color: var(--primary); background: var(--primary-light); padding: 2px 8px; border-radius: 10px; }
.order-tag {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
    color: white;
    font-weight: 500;
}
.tag-正常 { background: #2196F3; }
.tag-已发货 { background: var(--success); }
.tag-售后中 { background: var(--danger); }
.tag-已取消 { background: var(--gray-500); }
.tag-交易成功 { background: var(--primary); }
.tag-确认收货 { background: var(--primary); }
.tag-售后成功 { background: var(--purple); }
.order-info { font-size: 14px; color: var(--gray-700); margin-bottom: 4px; }
.order-date-extra { font-size: 12px; color: var(--gray-500); }
.order-info strong { color: var(--gray-900); }
.order-items { margin: 8px 0; }
.order-item-row { font-size: 13px; color: var(--gray-700); padding: 2px 0; }
.order-total { font-size: 16px; font-weight: 600; color: var(--primary); margin: 8px 0; }
.order-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--gray-200);
}
.order-actions button {
    padding: 6px 12px;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    color: white;
    cursor: pointer;
}
.action-ship { background: var(--success); }
.action-cancel { background: var(--gray-500); }
.action-refund { background: var(--warning); }
.action-agree { background: var(--success); }
.order-input-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}
.order-input-row input {
    flex: 1;
    min-width: 100px;
    padding: 6px 10px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 13px;
    outline: none;
}
.order-input-row input:focus { border-color: var(--primary); }
.order-input-row input:disabled { background: var(--gray-100); }

/* Cart item */
.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
}
.cart-item-info { flex: 1; }
.cart-item-info p { font-size: 14px; color: var(--gray-700); margin-bottom: 2px; }
.cart-item-info .cart-price { color: var(--primary); font-weight: 600; font-size: 15px; }
.cart-item-del {
    width: 32px; height: 32px;
    border: none;
    background: #ffebee;
    color: var(--danger);
    border-radius: 50%;
    font-size: 16px;
    cursor: pointer;
    flex-shrink: 0;
    margin-left: 10px;
}
.cart-total {
    text-align: right;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
    padding: 12px 0;
}

/* Product manage */
.section-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-700);
    margin: 16px 0 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--gray-200);
}
.product-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
    border-bottom: 1px dashed var(--gray-200);
    transition: opacity 0.2s, background 0.15s;
}
.product-row.dragging {
    opacity: 0.3;
}
.product-row.drag-over {
    border-top: 2px solid var(--primary);
    padding-top: 6px;
}
.drag-handle {
    cursor: grab;
    font-size: 16px;
    color: var(--gray-500);
    padding: 4px;
    user-select: none;
    flex-shrink: 0;
    touch-action: none;
}
.drag-handle:active { cursor: grabbing; }
.drag-clone {
    position: fixed;
    z-index: 9999;
    pointer-events: none;
    opacity: 0.85;
    background: white;
    box-shadow: 0 4px 16px rgba(0,0,0,0.18);
    border-radius: 6px;
    padding: 8px;
}
.product-row input {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
    outline: none;
}
.product-row input:disabled { background: var(--gray-100); border-color: transparent; }
.product-row button {
    padding: 5px 10px;
    border: none;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    color: white;
}
.combo-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
    border-bottom: 1px dashed var(--gray-200);
    flex-wrap: wrap;
    font-size: 13px;
}
.combo-row .combo-name { flex: 1; min-width: 120px; color: var(--gray-700); font-size: 14px; }
.combo-row.combo-unpublished { opacity: 0.6; }
.combo-row.combo-published .combo-name { color: var(--gray-900); font-weight: 500; }
.combo-row input {
    width: 80px;
    padding: 5px 8px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 13px;
    outline: none;
}
.add-row {
    display: flex;
    gap: 8px;
    margin-top: 10px;
    align-items: center;
}
.add-row .form-input { flex: 1; padding: 8px 10px; font-size: 13px; }
.hint-text { color: var(--gray-500); font-size: 12px; margin-top: 8px; }

/* Empty state */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--gray-500);
}
.empty-state .empty-icon { font-size: 40px; margin-bottom: 8px; }
.empty-state p { font-size: 14px; }

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: var(--nav-height);
    background: white;
    display: flex;
    justify-content: space-around;
    align-items: center;
    border-top: 1px solid var(--gray-200);
    z-index: 100;
}
.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    padding: 4px 0;
    transition: color 0.2s;
}
.nav-item .nav-icon { font-size: 20px; }
.nav-item .nav-text { font-size: 11px; margin-top: 2px; color: var(--gray-500); }
.nav-item.active .nav-text { color: var(--primary); font-weight: 500; }

/* Modal form extras */
.modal-radio-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 12px 0;
}
.modal-radio-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}
.modal-radio-item.selected {
    border-color: var(--primary);
    background: var(--primary-light);
}
.modal-radio-dot {
    width: 18px; height: 18px;
    border: 2px solid var(--gray-300);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
}
.modal-radio-item.selected .modal-radio-dot {
    border-color: var(--primary);
}
.modal-radio-item.selected .modal-radio-dot::after {
    content: '';
    width: 10px; height: 10px;
    background: var(--primary);
    border-radius: 50%;
}
.modal-input {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 15px;
    outline: none;
    margin-top: 10px;
}
.modal-input:focus { border-color: var(--primary); }

/* Copyable text */
.copyable {
    cursor: pointer;
    position: relative;
    border-radius: 4px;
    padding: 2px 4px;
    margin: -2px -4px;
    transition: background 0.15s;
}
.copyable:active {
    background: var(--primary-light);
}

/* Reason tags */
.reason-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.reason-tag {
    padding: 6px 14px;
    border: 1.5px solid var(--gray-300);
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    background: white;
}
.reason-tag.active {
    border-color: var(--primary);
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 500;
}

/* Upload preview */
.upload-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.upload-thumb {
    width: 72px; height: 72px;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}
.upload-thumb img {
    width: 100%; height: 100%;
    object-fit: cover;
}
.upload-thumb button {
    position: absolute;
    top: 2px; right: 2px;
    width: 20px; height: 20px;
    border: none;
    background: rgba(0,0,0,0.5);
    color: white;
    border-radius: 50%;
    font-size: 11px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
}
.upload-add {
    width: 72px; height: 72px;
    border: 2px dashed var(--gray-300);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 28px;
    color: var(--gray-300);
    cursor: pointer;
    transition: border-color 0.2s;
}
.upload-add:active { border-color: var(--primary); color: var(--primary); }

/* Refund images in order */
.refund-images {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 6px 0;
}
.refund-images img {
    width: 56px; height: 56px;
    object-fit: cover;
    border-radius: 6px;
    cursor: pointer;
    border: 1px solid var(--gray-200);
}

/* Tracking row in order card */
.tracking-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    background: #f0f9ff;
    border-radius: 8px;
    margin: 6px 0;
    cursor: pointer;
    transition: background 0.2s;
    min-height: 40px;
}
.tracking-row:active { background: #dbeafe; }
.tracking-icon { font-size: 16px; flex-shrink: 0; }
.tracking-text-wrap {
    flex: 1;
    overflow: hidden;
    min-width: 0;
}
.tracking-time-label {
    font-size: 11px;
    color: var(--gray-500);
    margin-bottom: 2px;
}
.tracking-text {
    font-size: 13px;
    color: var(--gray-700);
    line-height: 1.4;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.tracking-refresh {
    flex-shrink: 0;
    font-size: 12px;
    color: var(--primary);
    padding: 4px 10px;
    border: 1px solid var(--primary);
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}
.tracking-refresh:active {
    background: var(--primary);
    color: white;
}

/* Tracking detail modal */
.tracking-header-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}
.tracking-company {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
}
.tracking-status-badge {
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    background: #e8f5e9;
    color: #2e7d32;
}
.tracking-no-info {
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 4px;
}
.tracking-query-time {
    font-size: 12px;
    color: var(--gray-500);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--gray-200);
}

/* Timeline */
.tracking-timeline {
    position: relative;
    padding-left: 20px;
}
.timeline-item {
    position: relative;
    padding-bottom: 18px;
    padding-left: 14px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 8px;
    bottom: -10px;
    width: 1px;
    background: var(--gray-300);
}
.timeline-item:last-child::before { display: none; }
.timeline-dot {
    position: absolute;
    left: -24px;
    top: 6px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--gray-300);
    border: 2px solid white;
    box-shadow: 0 0 0 1px var(--gray-300);
}
.timeline-item.active .timeline-dot {
    background: var(--primary);
    box-shadow: 0 0 0 1px var(--primary);
}
.timeline-time {
    font-size: 12px;
    color: var(--gray-500);
    margin-bottom: 2px;
}
.timeline-desc {
    font-size: 13px;
    color: var(--gray-700);
    line-height: 1.5;
}
.timeline-item.active .timeline-time { color: var(--primary); font-weight: 500; }
.timeline-item.active .timeline-desc { color: var(--gray-900); font-weight: 500; }

/* Tag group (model/filter selection) */
.tag-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.spec-tag {
    display: inline-block;
    padding: 6px 14px;
    border: 1.5px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    background: white;
    color: var(--gray-700);
    user-select: none;
}
.spec-tag:active { transform: scale(0.96); }
.spec-tag.disabled {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
    text-decoration: line-through;
}
.spec-tag.active {
    border-color: var(--primary);
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 500;
}
.spec-tag-hint {
    font-size: 13px;
    color: var(--gray-500);
    padding: 6px 0;
}

/* Address input with paste button */
.address-input-wrap {
    display: flex;
    gap: 8px;
    align-items: center;
}
.address-input-wrap .form-input {
    flex: 1;
}
.paste-btn {
    padding: 10px 16px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    cursor: pointer;
    white-space: nowrap;
    flex-shrink: 0;
    transition: opacity 0.2s;
}
.paste-btn:active { opacity: 0.8; }

/* Inline paste button (small) */
.paste-btn-sm {
    padding: 6px 10px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    white-space: nowrap;
    flex-shrink: 0;
    transition: opacity 0.2s;
}
.paste-btn-sm:active { opacity: 0.8; }

/* Modal input with paste button row */
.modal-input-row {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-top: 10px;
}
.modal-input-row .modal-input {
    flex: 1;
    margin-top: 0;
}
.modal-input-row .paste-btn-sm {
    padding: 10px 14px;
    font-size: 13px;
}

/* Ship express input inline */
.ship-express-input {
    padding: 6px 10px;
    border: 1.5px solid var(--gray-300);
    border-radius: 6px;
    font-size: 13px;
    outline: none;
    width: 120px;
    transition: border-color 0.2s;
}
.ship-express-input:focus {
    border-color: var(--primary);
}
.ship-express-select {
    padding: 6px 10px;
    border: 1.5px solid var(--gray-300);
    border-radius: 6px;
    font-size: 13px;
    outline: none;
    background: white;
    max-width: 110px;
}
.ship-express-select:focus { border-color: var(--primary); }

/* Return-fill button (in 售后中 cards) */
.action-return-fill {
    background: var(--primary) !important;
}

/* Return-tracking row variant */
.tracking-row-return {
    background: #fff7ed;
}
.tracking-row-return:active { background: #ffedd5; }

/* Lock Overlay */
.lock-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 10;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 60px;
    border-radius: var(--radius);
}
.lock-overlay.unlocked {
    display: none;
}
.lock-prompt {
    text-align: center;
    background: white;
    padding: 24px 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    max-width: 300px;
    width: 90%;
}
.lock-icon {
    font-size: 36px;
    display: block;
    margin-bottom: 8px;
}
.lock-prompt p {
    font-size: 14px;
    color: var(--gray-700);
    margin-bottom: 14px;
}
.lock-input-row {
    display: flex;
    gap: 8px;
    align-items: center;
}
.lock-input-row .form-input {
    flex: 1;
    min-width: 0;
}

/* Responsive */
@media (min-width: 768px) {
    .app-content { max-width: 640px; margin: 0 auto; }
    .login-container { padding: 48px 40px; }
    .modal-content { max-width: 440px; }
}

@media (min-width: 1024px) {
    .app-content { max-width: 720px; }
}