/* === Reset & Base === */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    padding: 0.5rem 1rem;
    background: var(--color-primary);
    color: #fff;
    z-index: 200;
    text-decoration: none;
    border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus {
    top: 0;
}

:root {
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-danger: #dc2626;
    --color-danger-hover: #b91c1c;
    --color-bg: #f8fafc;
    --color-surface: #ffffff;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --color-success: #16a34a;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --color-focus-ring: rgba(37, 99, 235, 0.15);
    --color-badge-product-bg: #dbeafe;
    --color-badge-product-text: #1e40af;
    --color-badge-meal-bg: #dcfce7;
    --color-badge-meal-text: #166534;
    --color-badge-quick-bg: #fef3c7;
    --color-badge-quick-text: #92400e;
    --color-badge-composed-bg: #ede9fe;
    --color-badge-composed-text: #5b21b6;
    --color-alert-error-bg: #fef2f2;
    --color-alert-error-border: #fecaca;
    --color-alert-success-bg: #f0fdf4;
    --color-alert-success-border: #bbf7d0;
    --color-computed-preview-bg: #f0f9ff;
    --color-ingredient-chip-bg: #f1f5f9;
    --color-dropdown-shadow: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --color-primary: #3b82f6;
    --color-primary-hover: #60a5fa;
    --color-danger: #ef4444;
    --color-danger-hover: #f87171;
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-text: #e2e8f0;
    --color-text-muted: #94a3b8;
    --color-border: #334155;
    --color-success: #22c55e;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    --color-focus-ring: rgba(59, 130, 246, 0.25);
    --color-badge-product-bg: #1e3a5f;
    --color-badge-product-text: #93c5fd;
    --color-badge-meal-bg: #14532d;
    --color-badge-meal-text: #86efac;
    --color-badge-quick-bg: #451a03;
    --color-badge-quick-text: #fcd34d;
    --color-badge-composed-bg: #2e1065;
    --color-badge-composed-text: #c4b5fd;
    --color-alert-error-bg: #450a0a;
    --color-alert-error-border: #7f1d1d;
    --color-alert-success-bg: #052e16;
    --color-alert-success-border: #166534;
    --color-computed-preview-bg: #0c2d48;
    --color-ingredient-chip-bg: #334155;
    --color-dropdown-shadow: rgba(0, 0, 0, 0.4);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --color-primary: #3b82f6;
        --color-primary-hover: #60a5fa;
        --color-danger: #ef4444;
        --color-danger-hover: #f87171;
        --color-bg: #0f172a;
        --color-surface: #1e293b;
        --color-text: #e2e8f0;
        --color-text-muted: #94a3b8;
        --color-border: #334155;
        --color-success: #22c55e;
        --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
        --color-focus-ring: rgba(59, 130, 246, 0.25);
        --color-badge-product-bg: #1e3a5f;
        --color-badge-product-text: #93c5fd;
        --color-badge-meal-bg: #14532d;
        --color-badge-meal-text: #86efac;
        --color-badge-quick-bg: #451a03;
        --color-badge-quick-text: #fcd34d;
        --color-badge-composed-bg: #2e1065;
        --color-badge-composed-text: #c4b5fd;
        --color-alert-error-bg: #450a0a;
        --color-alert-error-border: #7f1d1d;
        --color-alert-success-bg: #052e16;
        --color-alert-success-border: #166534;
        --color-computed-preview-bg: #0c2d48;
        --color-ingredient-chip-bg: #334155;
        --color-dropdown-shadow: rgba(0, 0, 0, 0.4);
    }
}

body {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="search"],
input[type="url"],
input[type="tel"],
input[type="date"],
select,
textarea {
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--color-surface);
    color: var(--color-text);
    transition: border-color 0.15s, box-shadow 0.15s;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
input[type="url"]:focus,
input[type="tel"]:focus,
input[type="date"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-focus-ring);
}

input::placeholder,
textarea::placeholder {
    color: var(--color-text-muted);
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* === Navbar === */
.navbar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text);
}

.nav-links {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 0.25rem;
}

.nav-links a {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    text-decoration: none;
    color: var(--color-text-muted);
    border-radius: var(--radius);
    font-size: 0.9rem;
    transition:
        background 0.15s,
        color 0.15s;
}

.nav-links a:hover,
.nav-links a.active {
    background: var(--color-primary);
    color: #fff;
}

.nav-links li form {
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
}

.nav-logout-btn {
    background: none;
    border: none;
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    color: var(--color-text-muted);
    border-radius: var(--radius);
    font-size: 0.9rem;
    cursor: pointer;
    transition:
        background 0.15s,
        color 0.15s;
    font-family: inherit;
    line-height: inherit;
}

.nav-logout-btn:hover {
    background: var(--color-primary);
    color: #fff;
}

/* === Page Header === */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 1.5rem 0 1rem;
    gap: 1rem;
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

/* === Search Form in Page Header === */
.search-form {
    flex: 1;
    min-width: 0;
}

.search-field {
    width: 100%;
    padding: 0.6rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    background: var(--color-surface);
}

.search-field:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-focus-ring);
}

/* === Pagination === */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.25rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.pagination-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.25rem;
    height: 2.25rem;
    padding: 0 0.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.875rem;
    color: var(--color-text);
    text-decoration: none;
    background: var(--color-surface);
    transition: background 0.15s, border-color 0.15s;
}

.pagination-link:hover:not(.disabled):not(.current) {
    background: var(--color-bg);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.pagination-link.current {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
    font-weight: 600;
}

.pagination-link.disabled {
    color: var(--color-text-muted);
    opacity: 0.5;
    cursor: default;
}

.pagination-ellipsis {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.25rem;
    height: 2.25rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 0.875rem;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s;
    white-space: nowrap;
}

.btn:hover {
    background: var(--color-bg);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
}

.btn-danger {
    color: var(--color-danger);
    border-color: var(--color-danger);
}

.btn-danger:hover {
    background: var(--color-danger);
    color: #fff;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

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

/* === Forms === */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
}

.form-group input,
.form-group select {
    width: 100%;
}

.form-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.field-error {
    color: var(--color-danger);
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: block;
}

.inline-form {
    display: inline;
}

.item-form {
    max-width: 480px;
    background: var(--color-surface);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* === Tables === */
.table-responsive {
    overflow-x: auto;
    margin: 1rem 0;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.data-table th,
.data-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    vertical-align: middle;
    border-bottom: 1px solid var(--color-border);
}

.data-table th {
    background: var(--color-bg);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.data-table tfoot td {
    background: var(--color-bg);
    font-weight: 600;
    border-top: 2px solid var(--color-border);
}

.data-table tr.muted td {
    color: var(--color-text-muted);
}

.actions {
    white-space: nowrap;
}

.actions > * {
    display: inline-block;
    vertical-align: middle;
    margin-right: 0.25rem;
}

.actions > *:last-child {
    margin-right: 0;
}

/* === Summary Cards === */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
    margin: 1rem 0;
}

.summary-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
    box-shadow: var(--shadow);
}

.summary-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.summary-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* === Goal Progress Bars === */
.goal-bars {
    max-width: 480px;
    margin: 1rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.goal-bar-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.goal-label {
    width: 60px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text);
}
.goal-bar-track {
    flex: 1;
    height: 10px;
    background: var(--color-bg-secondary);
    border-radius: 5px;
    overflow: hidden;
}
.goal-bar-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 0.3s ease;
}
.goal-ok { background: var(--primary, #4a90d9); }
.goal-good { background: #27ae60; }
.goal-over { background: #e74c3c; }
.goal-numbers {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    min-width: 90px;
    text-align: right;
}

/* === Calorie Bar Chart === */
.calorie-chart {
    position: relative;
    margin: 1.5rem 0;
    padding: 0 0.5rem;
}
.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 4px;
    height: 160px;
}
.chart-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 0;
}
.chart-val {
    font-size: 0.6rem;
    color: var(--color-text-muted);
    margin-bottom: 2px;
    white-space: nowrap;
}
.chart-bar {
    width: 100%;
    max-width: 32px;
    background: var(--primary, #4a90d9);
    border-radius: 3px 3px 0 0;
    min-height: 2px;
    transition: height 0.3s ease;
}
.chart-bar-over {
    background: #e74c3c;
}
.chart-label {
    font-size: 0.65rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}
.chart-goal-line {
    position: absolute;
    left: 0;
    right: 0;
    border-top: 2px dashed #27ae60;
    pointer-events: none;
}
.chart-goal-label {
    position: absolute;
    right: 0;
    top: -14px;
    font-size: 0.6rem;
    color: #27ae60;
    font-weight: 600;
}

/* === Date Navigation === */
.date-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin: 1rem 0;
}

.current-date {
    font-weight: 600;
    font-size: 1rem;
}

/* === View Tabs === */
.view-tabs {
    display: flex;
    gap: 0.25rem;
    border-bottom: 2px solid var(--color-border);
    margin-bottom: 1rem;
}

.tab {
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--color-text-muted);
    font-weight: 500;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition:
        color 0.15s,
        border-color 0.15s;
}

.tab:hover {
    color: var(--color-text);
}

.tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* === Badges === */
.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: capitalize;
}

.badge-product {
    background: var(--color-badge-product-bg);
    color: var(--color-badge-product-text);
}

.badge-meal {
    background: var(--color-badge-meal-bg);
    color: var(--color-badge-meal-text);
}

.badge-quick {
    background: var(--color-badge-quick-bg);
    color: var(--color-badge-quick-text);
}

/* === Recent Items === */
.recent-items {
    margin-top: 0.75rem;
    max-width: 480px;
}
.recent-items h3 {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.recent-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.chip {
    display: inline-block;
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
    font-size: 0.82rem;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}
.chip:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.chip-product {
    border-left: 3px solid var(--color-primary);
}
.chip-meal {
    border-left: 3px solid var(--color-success);
}

/* === Quick Entry === */
.quick-entry-details {
    margin-top: 0.75rem;
    max-width: 480px;
}

/* === Quantity Prompt === */
.quantity-prompt {
    margin-top: 0.75rem;
    max-width: 480px;
    padding: 0.75rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
}

.quantity-prompt form {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.qty-item-name {
    font-weight: 600;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.quantity-prompt label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.quantity-prompt input[type="number"] {
    width: 80px;
}

.quick-entry-details summary {
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    padding: 0.25rem 0;
}

.quick-entry-form {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
    align-items: center;
}

.quick-entry-form input[type="text"] {
    flex: 2;
}

.quick-entry-form input[type="number"] {
    flex: 1;
    max-width: 100px;
}

/* === Autocomplete === */
.autocomplete-wrapper {
    position: relative;
    max-width: 480px;
}

#search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 1rem;
}

#search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-focus-ring);
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: 0 4px 12px var(--color-dropdown-shadow);
    max-height: 300px;
    overflow-y: auto;
    z-index: 50;
}

.search-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

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

.search-item:hover {
    background: var(--color-bg);
}

.search-item.empty {
    color: var(--color-text-muted);
    cursor: default;
}

.search-meta {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-left: auto;
}

/* === Auth === */
.auth-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
}

.auth-card {
    background: var(--color-surface);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 400px;
}

.auth-card h1 {
    text-align: center;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.auth-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

/* === Alerts === */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.alert-error {
    background: var(--color-alert-error-bg);
    color: var(--color-danger);
    border: 1px solid var(--color-alert-error-border);
}

.alert-success {
    background: var(--color-alert-success-bg);
    color: var(--color-success);
    border: 1px solid var(--color-alert-success-border);
}

/* === Empty State === */

.computed-preview {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: var(--color-computed-preview-bg);
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.empty-state {
    text-align: center;
    color: var(--color-text-muted);
    padding: 2rem;
    font-size: 0.95rem;
}

/* === Composed Meal Form === */
.composed-meal-form {
    max-width: 600px;
}

.ingredient-row {
    background: var(--color-bg);
    border-radius: var(--radius);
    padding: 0.75rem;
    margin-bottom: 0.5rem;
}

.ingredient-fields {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.ingredient-search-wrapper {
    position: relative;
    flex: 2;
    min-width: 150px;
}

.ingredient-search-wrapper input {
    width: 100%;
}

.ingredient-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: 0 4px 12px var(--color-dropdown-shadow);
    max-height: 200px;
    overflow-y: auto;
    z-index: 50;
}

.ingredient-amount-group {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex: 1;
    min-width: 100px;
}

.ingredient-amount-group input {
    width: 80px;
}

.ingredient-unit {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.ingredient-macros {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
    padding-left: 0.25rem;
}

/* === Meal List: Ingredient Breakdown === */
.ingredient-breakdown {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-top: 0.4rem;
}

.ingredient-chip {
    display: flex;
    flex-direction: column;
    background: var(--color-ingredient-chip-bg);
    border-radius: var(--radius);
    padding: 0.3rem 0.75rem;
    font-size: 0.8rem;
}

.ingredient-chip-macros {
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

.badge-composed {
    background: var(--color-badge-composed-bg);
    color: var(--color-badge-composed-text);
}

/* === Theme Toggle === */
.theme-toggle-btn {
    background: none;
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0.75rem;
    color: var(--color-text-muted);
    border-radius: var(--radius);
    font-size: 0.9rem;
    cursor: pointer;
    transition:
        background 0.15s,
        color 0.15s;
    font-family: inherit;
    line-height: inherit;
}

.theme-toggle-btn:hover {
    background: var(--color-primary);
    color: #fff;
}

/* === Responsive === */
@media (max-width: 640px) {
    .nav-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        padding-top: 0.5rem;
    }

    .nav-links.open {
        display: flex;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .data-table th,
    .data-table td {
        padding: 0.5rem;
        font-size: 0.85rem;
    }

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

    .date-nav {
        font-size: 0.9rem;
    }
}