:root {
    color-scheme: light dark;
    --color-bg: #f5f6f8;
    --color-surface: #ffffff;
    --color-text: #1a1d23;
    --color-text-muted: #6b7280;
    --color-primary: #16a34a;
    --color-primary-hover: #15803d;
    --color-danger: #dc2626;
    --color-success: #16a34a;
    --color-warning: #d97706;
    --color-border: #e5e7eb;
    --color-danger-bg: #fee2e2;
    --color-warning-bg: #fef3c7;
    --color-success-bg: #dcfce7;
    --color-muted-bg: #eef0f3;
    --color-track-bg: #eef0f3;
    --radius: 10px;
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 16px;
    --space-4: 24px;
    --space-5: 32px;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --color-bg: #14161a;
        --color-surface: #1c1f26;
        --color-text: #e8eaed;
        --color-text-muted: #9aa1ac;
        --color-primary: #4ade80;
        --color-primary-hover: #86efac;
        --color-danger: #f87171;
        --color-success: #4ade80;
        --color-warning: #fbbf24;
        --color-border: #2c303a;
        --color-danger-bg: #3a1f22;
        --color-warning-bg: #3a2f16;
        --color-success-bg: #16301f;
        --color-muted-bg: #262a33;
        --color-track-bg: #262a33;
    }
}

:root[data-theme="dark"] {
    --color-bg: #14161a;
    --color-surface: #1c1f26;
    --color-text: #e8eaed;
    --color-text-muted: #9aa1ac;
    --color-primary: #4ade80;
    --color-primary-hover: #86efac;
    --color-danger: #f87171;
    --color-success: #4ade80;
    --color-warning: #fbbf24;
    --color-border: #2c303a;
    --color-danger-bg: #3a1f22;
    --color-warning-bg: #3a2f16;
    --color-success-bg: #16301f;
    --color-muted-bg: #262a33;
    --color-track-bg: #262a33;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
}

a {
    color: var(--color-primary);
}

input[type="text"],
input[type="date"],
input[type="datetime-local"],
input[type="number"],
input[type="email"],
input[type="password"] {
    background: var(--color-surface);
    color: var(--color-text);
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: calc(var(--space-3) + env(safe-area-inset-top)) calc(var(--space-4) + env(safe-area-inset-right)) var(--space-3) calc(var(--space-4) + env(safe-area-inset-left));
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--space-2);
}

.app-header__left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.app-header__brand {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--color-text);
    text-decoration: none;
}

.app-nav {
    display: flex;
    gap: var(--space-3);
    overflow-x: auto;
    max-width: 100%;
    -webkit-overflow-scrolling: touch;
}

.app-nav a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
}

.app-nav a:hover {
    color: var(--color-primary);
}

.app-header__right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.app-header__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 32px;
    height: 32px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
    flex-shrink: 0;
}

.app-header__hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
}

.app-mobile-menu {
    display: none;
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-3) calc(var(--space-4) + env(safe-area-inset-right)) var(--space-4) calc(var(--space-4) + env(safe-area-inset-left));
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.app-mobile-menu__nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.app-mobile-menu__nav a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--color-border);
}

.app-mobile-menu__actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-1);
}

@media (max-width: 720px) {
    .app-nav,
    .app-header__right {
        display: none;
    }

    .app-header__hamburger {
        display: flex;
    }

    .app-mobile-menu.is-open {
        display: flex;
    }
}

.app-main {
    max-width: 960px;
    margin: 0 auto;
    padding: var(--space-4) calc(var(--space-4) + env(safe-area-inset-right)) calc(var(--space-4) + env(safe-area-inset-bottom)) calc(var(--space-4) + env(safe-area-inset-left));
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.page-header h1 {
    margin: 0;
    font-size: 1.375rem;
}

.section-title {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin: var(--space-5) 0 var(--space-2);
}

.list-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.list-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-3);
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
}

.list-row:last-child {
    border-bottom: none;
}

.list-row__main {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-width: 0;
}

.list-row__name {
    font-weight: 600;
}

.list-row__meta {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.list-row__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.85rem;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-3);
}

.stat-card__label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.stat-card__value {
    font-size: 1.4rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.stat-card__unit {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.stat-card__delta {
    font-size: 0.8rem;
    margin-top: 4px;
}

.stat-card__delta--up {
    color: var(--color-danger);
}

.stat-card__delta--down {
    color: var(--color-success);
}

.stat-card--success { border-left: 4px solid var(--color-success); }
.stat-card--warning { border-left: 4px solid var(--color-warning); }
.stat-card--danger { border-left: 4px solid var(--color-danger); }

.chart-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-3);
    margin-bottom: var(--space-4);
}

.chart-card h2 {
    margin: 0 0 var(--space-2);
    font-size: 1rem;
}

.chart-container {
    position: relative;
    height: 260px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

@media (max-width: 720px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

.badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--color-danger-bg);
    color: var(--color-danger);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

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

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

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

.form-page {
    max-width: 480px;
    margin: 0 auto;
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

.btn-danger-link {
    background: none;
    border: none;
    color: var(--color-danger);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 0;
    text-decoration: underline;
}

.form-row {
    display: flex;
    gap: var(--space-2);
}

.form-row .form-group {
    flex: 1;
}

.empty-state {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    padding: var(--space-4);
    text-align: center;
}

.inline-form {
    display: inline;
}

select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--color-surface);
    color: var(--color-text);
}

.fab {
    position: fixed;
    bottom: calc(var(--space-4) + env(safe-area-inset-bottom));
    right: calc(var(--space-4) + env(safe-area-inset-right));
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    line-height: 1;
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
    z-index: 100;
}

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

.btn-link {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    padding: 0;
}

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

.auth-page {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--space-4) + env(safe-area-inset-top)) calc(var(--space-4) + env(safe-area-inset-right)) calc(var(--space-4) + env(safe-area-inset-bottom)) calc(var(--space-4) + env(safe-area-inset-left));
}

.card {
    background: var(--color-surface);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    padding: var(--space-5);
    width: 100%;
    max-width: 380px;
}

.card__title {
    margin: 0 0 var(--space-4);
    font-size: 1.25rem;
}

.form-group {
    margin-bottom: var(--space-3);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-1);
    font-size: 0.875rem;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--color-surface);
    color: var(--color-text);
}

.form-group input:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 1px;
}

.form-group__hint {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.btn {
    display: inline-block;
    width: 100%;
    padding: 10px 16px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
}

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

.alert {
    padding: var(--space-2) var(--space-3);
    border-radius: 8px;
    margin-bottom: var(--space-3);
    font-size: 0.9rem;
}

.alert--error {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

.alert--info {
    background: var(--color-muted-bg);
    color: var(--color-text-muted);
}

.auth-switch {
    text-align: center;
    margin-top: var(--space-3);
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.macros-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--space-3);
    text-align: center;
}

.macros-grid__item {
    background: var(--color-muted-bg);
    border-radius: var(--radius);
    padding: var(--space-3) var(--space-2);
}

.macros-grid__value {
    font-size: 1.2rem;
    font-weight: 700;
}

.macros-grid__label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}


/* ---------------------------------------------------------------------------------------------------------
   Nutri
   --------------------------------------------------------------------------------------------------------- */

.app-main .card {
    max-width: none;
    padding: var(--space-4);
    margin-bottom: var(--space-3);
}

.app-main .form-page {
    max-width: 640px;
}

.app-nav a.active {
    color: var(--color-primary);
    font-weight: 600;
}

.page-header .btn,
.page-header form {
    width: auto;
    margin: 0;
}

.page-header__sub {
    margin: 4px 0 0;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.lead {
    color: var(--color-text-muted);
    margin-top: 0;
}

.muted {
    color: var(--color-text-muted);
}

.text-danger {
    color: var(--color-danger);
}

.alert--success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.btn-secondary {
    display: inline-block;
    padding: 9px 14px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
}

.btn-sm {
    padding: 6px 10px;
    font-size: 0.8rem;
}

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

.form-row--4 {
    flex-wrap: wrap;
}

.form-row--4 .form-group {
    min-width: 120px;
}

.checkbox-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin: var(--space-1) 0 var(--space-3);
}

.checkbox-list__item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.9rem;
    cursor: pointer;
    font-weight: normal;
}

.checkbox-list__item input[type="checkbox"] {
    width: auto;
}

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

/* Chips "sí o sí" */
.chips {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-1) var(--space-2);
    margin: 0 0 var(--space-3);
    font-size: 0.85rem;
}

.chips__label {
    color: var(--color-text-muted);
}

.chip {
    padding: 2px 10px;
    border-radius: 999px;
    background: var(--color-muted-bg);
}

.chip--star {
    background: var(--color-warning-bg);
    color: var(--color-warning);
    font-weight: 600;
}

.star {
    color: var(--color-warning);
}

/* Pestañas de días */
.day-tabs {
    display: flex;
    gap: var(--space-1);
    overflow-x: auto;
    margin-bottom: var(--space-3);
    -webkit-overflow-scrolling: touch;
}

.day-tab {
    flex: 1 0 auto;
    text-align: center;
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
}

.day-tab.is-active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.day-tab__short {
    display: none;
}

.day-panel {
    display: none;
}

.day-panel.is-active {
    display: block;
}

.day-panel__footer {
    text-align: center;
    margin: var(--space-3) 0;
}

/* Barras de macros */
.macro-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-3);
}

.macro-bar__head {
    display: flex;
    flex-direction: column;
    font-size: 0.8rem;
    margin-bottom: 6px;
}

.macro-bar__label {
    color: var(--color-text-muted);
}

.macro-bar__value strong {
    font-size: 1.1rem;
}

.macro-bar__track {
    height: 6px;
    border-radius: 999px;
    background: var(--color-track-bg);
    overflow: hidden;
}

.macro-bar__fill {
    height: 100%;
    border-radius: 999px;
    background: var(--color-success);
}

.macro-bar--aviso .macro-bar__fill {
    background: var(--color-warning);
}

.macro-bar--mal .macro-bar__fill {
    background: var(--color-danger);
}

/* Comidas y filas de alimento */
.meal-card__head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: var(--space-1) var(--space-2);
    margin-bottom: var(--space-2);
}

.meal-card__head h2 {
    margin: 0;
    font-size: 1.05rem;
}

.meal-card__kcal {
    font-size: 0.85rem;
    font-weight: 600;
}

.meal-card__kcal .muted {
    font-weight: normal;
}

.food-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.food-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 10px 0;
    border-top: 1px solid var(--color-border);
}

.food-row:first-child {
    border-top: none;
}

.food-row__main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.food-row__name {
    font-weight: 600;
}

.food-row__meta {
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.food-row__qty {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    font-size: 0.95rem;
    white-space: nowrap;
}

.food-row__qty .muted {
    font-size: 0.75rem;
}

.food-row__actions {
    display: flex;
    gap: 4px;
}

.food-row__actions form {
    margin: 0;
}

.icon-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 0.95rem;
    line-height: 1;
}

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

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

.legend {
    font-size: 0.8rem;
    text-align: center;
}

/* Página de alimentos */
.food-filter {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2) var(--space-3);
    margin-bottom: var(--space-3);
}

.food-filter input[type="search"] {
    flex: 1 1 240px;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--color-surface);
    color: var(--color-text);
}

.food-filter .checkbox-list__item {
    margin: 0;
}

.food-group .section-title {
    margin-top: 0;
}

.food-row.is-no-apto .food-row__name {
    opacity: 0.7;
}

.segmented {
    display: inline-flex;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
}

.segmented__opt input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.segmented__opt span {
    display: block;
    padding: 6px 10px;
    font-size: 0.78rem;
    cursor: pointer;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.segmented__opt + .segmented__opt span {
    border-left: 1px solid var(--color-border);
}

.segmented__opt input:checked + span {
    background: var(--color-muted-bg);
    color: var(--color-text);
    font-weight: 600;
}

.segmented__opt--star input:checked + span {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.segmented__opt--no input:checked + span {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

.sticky-save {
    position: sticky;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-3) 0 calc(var(--space-3) + env(safe-area-inset-bottom));
    background: var(--color-bg);
}

.sticky-save .btn {
    width: auto;
}

.compra-check {
    flex-direction: row;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
}

.compra-check input {
    width: 18px;
    height: 18px;
}

.compra-check input:checked + .food-row__name {
    text-decoration: line-through;
    color: var(--color-text-muted);
}

@media (max-width: 720px) {
    .app-main {
        padding-left: calc(var(--space-3) + env(safe-area-inset-left));
        padding-right: calc(var(--space-3) + env(safe-area-inset-right));
    }

    .app-main .card {
        padding: var(--space-3);
    }

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

    .day-tab__full {
        display: none;
    }

    .day-tab__short {
        display: inline;
    }

    .food-row {
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .food-row__main {
        flex-basis: calc(100% - 110px);
    }

    .food-row__actions {
        width: 100%;
        justify-content: flex-end;
    }

    #form-reglas .segmented {
        width: 100%;
    }

    #form-reglas .segmented__opt {
        flex: 1;
        text-align: center;
    }
}

@media print {
    .app-header, .app-mobile-menu, .page-header .btn-secondary, .alert {
        display: none !important;
    }
}