:root {
    --primary: #2e7d32;
    --primary-dark: #1b5e20;
    --primary-light: #e8f5e9;
    --danger: #c62828;
    --warning: #ef6c00;
    --info: #0277bd;
    --text: #263238;
    --muted: #607d8b;
    --bg: #f5f7f6;
    --card-bg: #ffffff;
    --border: #e0e6e3;
    --radius: 12px;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ---------- Navbar ---------- */
.navbar {
    background: var(--primary-dark);
    color: #fff;
    padding: 14px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

.brand {
    color: #fff;
    font-size: 1.3rem;
    font-weight: 700;
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}

.nav-links a {
    color: #e8f5e9;
    text-decoration: none;
    font-weight: 500;
}

.nav-links a:hover {
    color: #fff;
    text-decoration: underline;
}

/* ---------- Selector de idioma ---------- */
.lang-selector {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: 8px;
    padding-left: 14px;
    border-left: 1px solid rgba(255, 255, 255, 0.25);
}

.lang-link {
    color: #c8e6c9;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 6px;
    transition: background 0.2s, color 0.2s;
}

.lang-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
}

.lang-link.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.2);
}

/* ---------- Main / footer ---------- */
main {
    flex: 1;
    padding: 30px 0;
}

.footer {
    background: var(--primary-dark);
    color: #c8e6c9;
    text-align: center;
    padding: 16px 0;
    font-size: 0.9rem;
}

/* ---------- Cards ---------- */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
}

.auth-card {
    max-width: 460px;
    margin: 20px auto;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.auth-card.wide {
    max-width: 720px;
}

.auth-card h1 {
    font-size: 1.6rem;
    margin-bottom: 6px;
    color: var(--primary-dark);
}

.section-title {
    font-size: 1.05rem;
    margin: 20px 0 10px;
    color: var(--primary-dark);
    border-bottom: 2px solid var(--primary-light);
    padding-bottom: 6px;
}

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

.muted.small {
    font-size: 0.85rem;
}

.center {
    text-align: center;
}

/* ---------- Forms ---------- */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 0.92rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.15);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
}

.file-input {
    width: 100%;
    padding: 10px;
    border: 1px dashed var(--border);
    border-radius: 8px;
    background: #fafcfb;
    cursor: pointer;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-block;
    padding: 11px 20px;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s, transform 0.1s;
}

.btn:hover {
    transform: translateY(-1px);
}

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

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

.btn-danger {
    background: var(--danger);
    color: #fff;
    padding: 6px 12px;
    font-size: 0.8rem;
}

.btn-outline {
    background: transparent;
    color: #e8f5e9;
    border: 1px solid #a5d6a7;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

/* ---------- Alerts / flash ---------- */
.flash-messages {
    margin-bottom: 20px;
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 10px;
    font-size: 0.95rem;
    border-left: 4px solid;
}

.alert-success {
    background: #e8f5e9;
    border-color: var(--primary);
    color: #1b5e20;
}

.alert-danger {
    background: #ffebee;
    border-color: var(--danger);
    color: #b71c1c;
}

.alert-warning {
    background: #fff3e0;
    border-color: var(--warning);
    color: #e65100;
}

.alert-info {
    background: #e1f5fe;
    border-color: var(--info);
    color: #01579b;
}

/* ---------- Dashboard ---------- */
.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 22px;
}

.dashboard-header h1 {
    font-size: 1.5rem;
    color: var(--primary-dark);
}

.day-nav {
    text-decoration: none;
    color: var(--primary);
    font-weight: 700;
    padding: 0 6px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 22px;
}

.stat-card {
    text-align: center;
}

.stat-card .stat-label {
    display: block;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--muted);
    margin-bottom: 6px;
}

.stat-card .stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-dark);
}

.stat-card .stat-value small {
    font-size: 1rem;
    font-weight: 600;
    color: var(--muted);
}

.stat-card .stat-hint {
    display: block;
    font-size: 0.8rem;
    color: var(--muted);
    margin-top: 4px;
}

.stat-card.consumed .stat-value {
    color: var(--warning);
}

.stat-card.burned .stat-value {
    color: var(--info);
}

.stat-card.over .stat-value {
    color: var(--danger);
}

.stat-card.ok .stat-value {
    color: var(--primary);
}

/* Progress bar */
.progress-section {
    margin-bottom: 24px;
}

.progress-bar {
    height: 18px;
    background: #e0e6e3;
    border-radius: 20px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), #66bb6a);
    border-radius: 20px;
    transition: width 0.4s ease;
}

/* Two columns */
.two-columns {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 20px;
    align-items: start;
}

@media (max-width: 800px) {
    .two-columns {
        grid-template-columns: 1fr;
    }
}

.two-columns h2 {
    font-size: 1.1rem;
    color: var(--primary-dark);
    margin-bottom: 14px;
}

/* Entry list */
.entry-list {
    list-style: none;
}

.entry-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

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

.entry-thumb {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    object-fit: cover;
    flex-shrink: 0;
}

.entry-thumb.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: var(--primary-light);
}

.entry-info {
    flex: 1;
    min-width: 0;
}

.entry-type {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 2px 8px;
    border-radius: 20px;
    margin-bottom: 2px;
}

.entry-item.comida .entry-type {
    background: #fff3e0;
    color: var(--warning);
}

.entry-item.ejercicio .entry-type {
    background: #e1f5fe;
    color: var(--info);
}

.entry-desc {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
}

.entry-notes {
    display: block;
    font-size: 0.8rem;
    color: var(--muted);
}

.entry-time {
    display: block;
    font-size: 0.75rem;
    color: var(--muted);
}

.entry-calories {
    text-align: right;
    flex-shrink: 0;
}

.entry-calories strong {
    display: block;
    font-size: 1rem;
    color: var(--primary-dark);
    margin-bottom: 4px;
}

/* Week chart */
.week-chart {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    height: 180px;
    padding-top: 10px;
}

.week-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
    justify-content: flex-end;
}

.week-bars {
    display: flex;
    align-items: flex-end;
    gap: 4px;
    height: 100%;
    width: 100%;
    justify-content: center;
}

.bar {
    width: 14px;
    border-radius: 4px 4px 0 0;
    min-height: 2px;
}

.bar.consumed {
    background: var(--warning);
}

.bar.burned {
    background: var(--info);
}

.week-day {
    font-size: 0.75rem;
    color: var(--muted);
    margin-top: 6px;
}

.legend {
    display: flex;
    gap: 18px;
    justify-content: center;
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--muted);
}

.dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 5px;
}

.dot.consumed {
    background: var(--warning);
}

.dot.burned {
    background: var(--info);
}

/* ---------- Type selector (add entry) ---------- */
.type-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.type-option input {
    display: none;
}

.type-card {
    display: block;
    text-align: center;
    padding: 20px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-weight: 700;
    font-size: 1.05rem;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}

.type-card.food:hover {
    border-color: var(--warning);
    background: #fff8f0;
}

.type-card.exercise:hover {
    border-color: var(--info);
    background: #f0f9fe;
}

.type-option input:checked + .type-card.food {
    border-color: var(--warning);
    background: #fff3e0;
}

.type-option input:checked + .type-card.exercise {
    border-color: var(--info);
    background: #e1f5fe;
}

/* ---------- Links ---------- */
a {
    color: var(--primary);
}