:root {
    --bg: #fafbfc;
    --surface: #ffffff;
    --surface-hover: #f3f4f6;
    --border: #dde1e6;
    --border-hover: #c4c9d0;
    --text: #1a1c20;
    --text-secondary: #475569;
    --gradient-brand: linear-gradient(135deg, #f472b6 0%, #ec4899 100%);
    --accent: #ec4899;
    --accent-hover: #db2777;
    --danger: #cf222e;
    --danger-hover: #a40e26;
    --success: #059669;
    --success-hover: #047857;
    --radius: 8px;
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --font-mono: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --tab-bar-height: 56px;
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --toolbar-height: 52px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
::-webkit-scrollbar {
    display: none;
}
html {
    -ms-overflow-style: none;
    scrollbar-width: none;
    max-width: 100vw;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    background-image:
        radial-gradient(ellipse at 50% 0%, #fef1f5 0%, transparent 70%),
        radial-gradient(ellipse at 80% 100%, #ecfdf5 0%, transparent 60%);
    background-attachment: fixed;
    max-width: 100vw;
    overflow-x: hidden;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}
:focus:not(:focus-visible) {
    outline: none;
}

/* ── 顶栏 ── */
.toolbar {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0 1rem;
    height: var(--toolbar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 30;
    max-width: 100%;
    flex-shrink: 0;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-shrink: 1;
    min-width: 0;
}
.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--gradient-brand);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
}
.toolbar-title {
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ── 桌面导航 ── */
.desktop-tabs {
    display: none;
    gap: 0.5rem;
    flex-shrink: 0;
}
.tab-btn {
    background: none;
    border: none;
    padding: 0.4rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius);
    transition: all var(--transition);
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
}
.tab-btn:hover {
    color: var(--text);
    background: var(--surface-hover);
}
.tab-btn.active {
    color: var(--accent);
    font-weight: 600;
    background: linear-gradient(135deg, #fdf2f8 0%, #fce7f3 100%);
}

/* ── 移动端底部导航 ── */
.mobile-tabs {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--border);
    display: flex;
    z-index: 30;
    height: calc(var(--tab-bar-height) + var(--safe-bottom));
    padding-bottom: var(--safe-bottom);
    align-items: stretch;
    max-width: 100vw;
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.04);
}
.mobile-tab {
    flex: 1;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    transition: color var(--transition), transform var(--transition);
    height: 100%;
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
}
.mobile-tab .tab-icon {
    font-size: 1.25rem;
    line-height: 1;
    transition: transform var(--transition);
}
.mobile-tab.active {
    color: var(--accent);
    font-weight: 700;
}
.mobile-tab.active .tab-icon {
    transform: scale(1.1);
}
.mobile-tab.active::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    border-radius: 0 0 3px 3px;
    background: var(--gradient-brand);
}

/* ── 内容区域 ── */
.content {
    max-width: 960px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
    width: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
    padding-bottom: calc(var(--tab-bar-height) + var(--safe-bottom) + 1rem);
    overflow-wrap: break-word;
    word-break: break-word;
}

/* ── 页面切换 ── */
.page {
    display: none;
    width: 100%;
}
.page.active {
    display: block;
}

#inputPage { display: none; }
#inputPage.active {
    display: flex;
    flex-direction: column;
    flex: 1;
}
#inputPage .card {
    flex: 1;
    display: flex;
    flex-direction: column;
}
#inputPage .input-field {
    flex: 1;
    min-height: 0;
}
#inputPage .input-actions {
    margin-top: 1rem;
    flex-shrink: 0;
}

#cardPage, #shopPage, #settingsPage { display: none; }
#cardPage.active, #shopPage.active, #settingsPage.active { display: block; }

.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    transition: border-color var(--transition);
    max-width: 100%;
    overflow: hidden;
}

.input-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
}

.input-field {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.7;
    resize: vertical;
    outline: none;
    background: var(--surface);
    color: var(--text);
    transition: border-color var(--transition), box-shadow var(--transition);
    -webkit-appearance: none;
    max-width: 100%;
}
.input-field:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(236, 72, 153, 0.15);
}
.input-field::placeholder {
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
}

/* ── 按钮 ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: all var(--transition);
    gap: 0.4rem;
    white-space: nowrap;
    user-select: none;
    -webkit-appearance: none;
    min-height: 44px;
    max-width: 100%;
}
.btn:active {
    transform: scale(0.97);
}
.btn-primary {
    background: var(--gradient-brand);
    border-color: transparent;
    color: white;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(236, 72, 153, 0.2);
}
.btn-primary:hover {
    box-shadow: 0 6px 18px rgba(236, 72, 153, 0.3);
    transform: translateY(-1px);
}
.btn-danger {
    color: var(--danger);
    border-color: var(--danger);
    background: transparent;
}
.btn-danger:hover {
    background: #fef2f2;
    border-color: var(--danger-hover);
}
.btn-success {
    color: var(--success);
    border-color: var(--success);
    background: transparent;
}
.btn-success:hover {
    background: #ecfdf5;
    border-color: var(--success-hover);
}
.btn-xs {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    border-radius: 6px;
    min-height: 32px;
}
.btn-block {
    width: 100%;
    justify-content: flex-start;
    padding: 0.75rem 1rem;
    min-height: 48px;
    font-size: 0.95rem;
}

/* ── 菜单卡片 ── */
.meal-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    transition: border-color var(--transition), box-shadow var(--transition);
    max-width: 100%;
    overflow: hidden;
}
@media (hover: hover) {
    .meal-card:hover {
        border-color: var(--accent);
        box-shadow: 0 6px 18px rgba(0, 0, 0, 0.04);
    }
}

.card-header {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-bottom: 1rem;
}
.card-header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
}
.card-more-btn {
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1rem;
    flex-shrink: 0;
    -webkit-appearance: none;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}
@media (hover: hover) {
    .card-more-btn:hover {
        background: var(--surface-hover);
        border-color: var(--accent);
        color: var(--accent);
    }
}
.date-tag {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    background: linear-gradient(135deg, #fdf2f8 0%, #fce7f3 100%);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    color: var(--accent);
    border: 1px solid #f9a8d4;
    white-space: nowrap;
}
.date-tag.past {
    background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
    color: var(--text-secondary);
    border-color: var(--border);
}
.card-actions {
    display: none;
    gap: 0.25rem;
    flex-wrap: wrap;
}
.card-header.expanded .card-actions {
    display: flex;
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 0;
}
.meal-block {
    margin-bottom: 1rem;
}
.meal-block:last-child {
    margin-bottom: 0;
}
.meal-type {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}
.food-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.food-chip {
    background: linear-gradient(135deg, #ffffff 0%, #fafbfc 100%);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 0.3rem 0.75rem;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all var(--transition);
    max-width: 100%;
    word-break: break-word;
}
@media (hover: hover) {
    .food-chip:hover {
        border-color: var(--accent);
        background: linear-gradient(135deg, #fdf2f8 0%, #fff 100%);
    }
}
.remove-food {
    display: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 700;
    font-size: 1.1rem;
    width: 18px;
    height: 18px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition);
    flex-shrink: 0;
}
.meal-card.editing .remove-food {
    display: inline-flex;
}
@media (hover: hover) {
    .meal-card.editing .remove-food:hover {
        color: var(--danger);
        background: #fee;
    }
}

.empty-message {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    background: linear-gradient(135deg, #fef1f5 0%, #ecfdf5 100%);
    max-width: 100%;
}
.empty-message i {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.75rem;
    font-style: normal;
}

/* ── 采购清单 ── */
.shop-section {
    margin-top: 1.5rem;
}
.shop-date-header {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}
.shop-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 0.25rem;
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
    border-radius: var(--radius);
    min-height: 52px;
    max-width: 100%;
}
@media (hover: hover) {
    .shop-item:hover {
        background: var(--surface-hover);
    }
}
.shop-checkbox {
    position: relative;
    width: 24px;
    height: 24px;
    border: 2px solid var(--text-secondary);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
    background: white;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}
.shop-checkbox::after {
    content: "";
    position: absolute;
    inset: -10px;
}
.shop-checkbox:focus-visible {
    box-shadow: 0 0 0 3px rgba(236, 72, 153, 0.3);
    border-color: var(--accent);
}
@media (hover: none) and (pointer: coarse) {
    .shop-checkbox:focus-visible {
        box-shadow: none;
        border-color: var(--text-secondary);
    }
}
.shop-checkbox.checked {
    background: var(--gradient-brand);
    border-color: transparent;
    animation: checkBounce 0.25s ease-out;
}
.shop-checkbox .check-icon {
    width: 16px;
    height: 16px;
    opacity: 0;
    transform: scale(0.5);
    transition: opacity 0.15s ease-out, transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.shop-checkbox.checked .check-icon {
    opacity: 1;
    transform: scale(1);
}
@keyframes checkBounce {
    0% { transform: scale(1); }
    30% { transform: scale(0.85); }
    60% { transform: scale(1.08); }
    100% { transform: scale(1); }
}
.shop-text {
    flex: 1;
    font-size: 0.95rem;
    word-break: break-word;
    min-width: 0;
}
.shop-text.done {
    text-decoration: line-through;
    color: var(--text-secondary);
}
.shop-count {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    margin-left: 2px;
}
.shop-dates {
    font-size: 0.72rem;
    color: var(--text-secondary);
    white-space: nowrap;
    flex-shrink: 0;
    margin-left: auto;
    padding-left: 0.5rem;
}
.shop-actions {
    display: flex;
    gap: 0.25rem;
}
.desktop-actions {
    display: none;
}
.more-btn {
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition);
    -webkit-appearance: none;
    flex-shrink: 0;
}
@media (hover: hover) {
    .more-btn:hover {
        background: var(--surface-hover);
        border-color: var(--accent);
        color: var(--accent);
    }
}

/* ── 遮罩 / 弹窗 ── */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 60;
    padding: 1rem;
}
.overlay.active {
    display: flex;
}
.modal {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    width: calc(100% - 2rem);
    max-width: 440px;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
    animation: modalFadeIn 0.2s ease-out;
}
@keyframes modalFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}
.modal-title {
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.modal-textarea {
    width: 100%;
    height: 8rem;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    resize: vertical;
    outline: none;
    background: var(--surface);
    transition: border-color var(--transition);
    -webkit-appearance: none;
    max-width: 100%;
}
.modal-textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(236, 72, 153, 0.15);
}
.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}
.modal-actions-stack {
    flex-direction: column;
    gap: 0.75rem;
}

/* ── 弹出菜单 ── */
.popup-menu {
    position: fixed;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    z-index: 70;
    display: none;
    min-width: 110px;
    overflow: hidden;
    animation: popIn 0.15s ease-out;
    max-width: calc(100vw - 2rem);
}
@keyframes popIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}
.popup-menu.active {
    display: block;
}
.popup-menu button {
    display: flex;
    width: 100%;
    padding: 0.7rem 1rem;
    border: none;
    background: none;
    font-size: 0.85rem;
    text-align: left;
    cursor: pointer;
    align-items: center;
    gap: 0.5rem;
    color: var(--text);
    transition: background var(--transition);
    min-height: 44px;
    -webkit-appearance: none;
}
.popup-menu button:hover {
    background: linear-gradient(135deg, #fdf2f8 0%, #fce7f3 100%);
}

/* ── 设置页 ── */
.settings-group {
    margin-bottom: 1.5rem;
}
.settings-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

/* ── 统一复选框组件（对齐 shop-checkbox）── */
input.cb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border: 2px solid var(--text-secondary);
    border-radius: 6px;
    background: white;
    cursor: pointer;
    flex-shrink: 0;
    position: relative;
    outline: none;
    vertical-align: middle;
    margin: 0;
    -webkit-tap-highlight-color: transparent;
    transition: border-color var(--transition), background var(--transition);
}
/* 44px 触摸区 */
input.cb::before {
    content: "";
    position: absolute;
    inset: -11px;
}
input.cb:focus-visible {
    box-shadow: 0 0 0 3px rgba(236, 72, 153, 0.3);
    border-color: var(--accent);
}
input.cb:checked {
    background: var(--gradient-brand);
    border-color: transparent;
    animation: checkBounce 0.25s ease-out;
}
input.cb::after {
    content: "";
    position: absolute;
    left: 4px;
    top: 1px;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    opacity: 0;
    transition: transform 0.15s ease-out, opacity 0.1s ease-out;
}
input.cb:checked::after {
    transform: rotate(45deg) scale(1);
    opacity: 1;
}
@media (hover: none) and (pointer: coarse) {
    input.cb:focus-visible {
        box-shadow: none;
        border-color: var(--text-secondary);
    }
}

.hidden {
    display: none !important;
}

/* ── 响应式 ── */
@media (min-width: 768px) {
    .more-btn {
        display: none;
    }
    .desktop-actions {
        display: flex;
        opacity: 0.3;
        transition: opacity var(--transition);
    }
    .shop-item:hover .desktop-actions {
        opacity: 1;
    }
    .desktop-tabs {
        display: flex;
    }
    .mobile-tabs {
        display: none;
    }
    .content {
        padding: 2rem 1.5rem;
        padding-bottom: 2rem;
    }
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .card {
        padding: 1.75rem;
    }
    .meal-card {
        padding: 1.5rem;
    }
    #inputPage.active {
        display: block;
        flex: none;
    }
    #inputPage .card {
        flex: none;
    }
    #inputPage .input-field {
        flex: none;
        min-height: 14rem;
    }
}

@media (min-width: 1024px) {
    .card-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}