/* ============================================
   RESET Y BASE
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primario: #2c3e50;
    --color-secundario: #3498db;
    --color-acento: #e74c3c;
    --color-exito: #27ae60;
    --color-fondo: #ecf0f1;
    --color-texto: #2c3e50;
    --color-blanco: #ffffff;
    --header-height: 60px;
    --footer-height: 50px;
    --sidebar-width: 250px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--color-fondo);
    color: var(--color-texto);
    min-height: 100vh;
    padding-top: var(--header-height);
    padding-bottom: var(--footer-height);
}

/* ============================================
   HEADER FIJO
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: linear-gradient(135deg, var(--color-primario), #34495e);
    color: var(--color-blanco);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 25px;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-secundario);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-name {
    color: var(--color-blanco);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 20px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-name:hover {
    background-color: rgba(255,255,255,0.15);
}

.user-name::before {
    content: '👤';
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logout-btn {
    color: var(--color-blanco);
    text-decoration: none;
    padding: 8px 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 20px;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.logout-btn:hover {
    background-color: var(--color-acento);
    border-color: var(--color-acento);
}

.logout-btn::before {
    content: '🚪 ';
}

/* ============================================
   MENÚ DE NAVEGACIÓN FIJO (debajo del header)
   ============================================ */
.nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-blanco);
    border-bottom: 1px solid #ddd;
    z-index: 999;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.nav-menu ul {
    display: flex;
    list-style: none;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    display: block;
    padding: 12px 20px;
    color: var(--color-texto);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-secundario);
    border-bottom-color: var(--color-secundario);
    background-color: rgba(52, 152, 219, 0.05);
}

/* ============================================
   CONTENIDO PRINCIPAL
   ============================================ */
.main-content {
    max-width: 1500px;
    margin: 0 auto;
    padding: 30px 20px;
    min-height: calc(100vh - var(--header-height) - var(--footer-height) - 50px);
}

/* ============================================
   FOOTER FIJO
   ============================================ */
.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--footer-height);
    background: linear-gradient(135deg, var(--color-primario), #34495e);
    color: var(--color-blanco);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    font-size: 0.9rem;
}

.footer p {
    opacity: 0.8;
}

/* ============================================
   TARJETAS Y CONTENEDORES
   ============================================ */
.card {
    background: var(--color-blanco);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.card-title {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: var(--color-primario);
    border-bottom: 2px solid var(--color-secundario);
    padding-bottom: 10px;
}

/* ============================================
   FORMULARIOS
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--color-primario);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-secundario);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primario {
    background-color: var(--color-secundario);
    color: var(--color-blanco);
}

.btn-primario:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.btn-secundario {
    background-color: #95a5a6;
    color: var(--color-blanco);
}

.btn-exito {
    background-color: var(--color-exito);
    color: var(--color-blanco);
}

.btn-peligro {
    background-color: var(--color-acento);
    color: var(--color-blanco);
}

/* ============================================
   ALERTAS
   ============================================ */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: 500;
}

.alert-exito {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* ============================================
   LOGIN / REGISTRO
   ============================================ */
.auth-container {
    max-width: 500px;
    margin: 40px auto;
}

.auth-container .card {
    padding: 40px;
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    color: var(--color-primario);
    margin-bottom: 10px;
}

.auth-header p {
    color: #7f8c8d;
}

.auth-links {
    text-align: center;
    margin-top: 20px;
}

.auth-links a {
    color: var(--color-secundario);
    text-decoration: none;
}

.auth-links a:hover {
    text-decoration: underline;
}

/* ============================================
   PERFIL DE USUARIO
   ============================================ */
.perfil-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
}

.perfil-datos .dato {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid #eee;
}

.perfil-datos .dato-label {
    font-weight: 600;
    color: #7f8c8d;
}

.perfil-datos .dato-valor {
    font-weight: 500;
    color: var(--color-primario);
}

.requerimientos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 20px;
}

.req-card {
    background: linear-gradient(135deg, var(--color-secundario), #2980b9);
    color: var(--color-blanco);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

.req-card .req-valor {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 5px;
}

.req-card .req-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .form-row,
    .perfil-grid {
        grid-template-columns: 1fr;
    }

    .requerimientos-grid {
        grid-template-columns: 1fr;
    }

    .nav-menu ul {
        flex-direction: column;
    }

    .nav-menu a {
        text-align: center;
    }

    .header {
        flex-direction: column;
        height: auto;
        padding: 10px;
    }

    body {
        padding-top: 120px;
    }

    .nav-menu {
        top: 100px;
    }
}

/* ============================================
   UTILIDADES
   ============================================ */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.w-100 { width: 100%; }

/* Badge de categoría */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
}

.badge-master {
    background-color: #f39c12;
    color: #fff;
}

.badge-plus {
    background-color: #9b59b6;
    color: #fff;
}

.badge-normal {
    background-color: #95a5a6;
    color: #fff;
}

/* ============================================
 *  ALIMENTOS
 *  ============================================ */

.section-title {
    margin: 25px 0 15px 0;
    padding-bottom: 8px;
    border-bottom: 1px solid #e5e5e5;
    color: var(--color-primario);
    font-size: 1.1rem;
}

.nutrition-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.nutrition-grid .form-group {
    margin-bottom: 0;
}

.card form {
    max-width: 900px;
    margin: 0 auto;
}

.card form input[type="number"] {
    text-align: right;
}

.btn-primario {
    min-width: 220px;
}

/* ============================================
   RANKING DE ALIMENTOS
   ============================================ */

.ranking-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}
 
.ranking-tab {
    padding: 8px 16px;
    border-radius: 20px;
    background: var(--color-superficie, #f0f0f0);
    color: var(--color-texto, #333);
    text-decoration: none;
    font-size: 0.9rem;
    transition: background 0.2s;
}
 
.ranking-tab:hover {
    background: var(--color-primario-suave, #dce8ff);
}
 
.ranking-tab.active {
    background: var(--color-primario, #2563eb);
    color: white;
    font-weight: 600;
}
 
.ranking-subtitulo {
    color: var(--color-texto-suave, #666);
    margin-bottom: 16px;
    font-size: 0.95rem;
}
 
.table-wrapper {
    overflow-x: auto;
}
 
.ranking-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
 
.ranking-table th {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 2px solid var(--color-borde, #e5e7eb);
    color: var(--color-texto-suave, #666);
    font-weight: 600;
    white-space: nowrap;
}
 
.ranking-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--color-borde, #e5e7eb);
    white-space: nowrap;
}
 
.ranking-table tr:last-child td {
    border-bottom: none;
}
 
.col-activa {
    background: var(--color-primario-suave, #eff6ff);
    font-weight: 700;
    color: var(--color-primario, #2563eb);
}
 
.rank-num {
    text-align: center;
    font-weight: 700;
    font-size: 1rem;
    width: 40px;
}
 
.nombre-alimento {
    font-weight: 600;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
}
 
.top-1 td { background: #fffbeb; }
.top-2 td { background: #f9fafb; }
.top-3 td { background: #fafafa; }
 
.badge-categoria {
    font-size: 0.8rem;
    padding: 2px 8px;
    border-radius: 10px;
}
 
.badge-categoria.master {
    background: #fef3c7;
    color: #92400e;
}
 
.badge-categoria.plus {
    background: #e0e7ff;
    color: #3730a3;
}
 
.badge-categoria.normal {
    background: #f0fdf4;
    color: #166534;
}

/* ============================================
   AGREGADO DE COMIDA DIARIO
   ============================================ */

.form-comida { position: relative; }
 
.sugerencias-lista {
    position: absolute;
    background: var(--color-superficie, #fff);
    border: 1px solid var(--color-borde, #e5e7eb);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    z-index: 100;
    max-height: 220px;
    overflow-y: auto;
    width: 100%;
}
 
.sugerencia-item {
    padding: 10px 14px;
    cursor: pointer;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--color-borde, #f0f0f0);
}
 
.sugerencia-item:hover {
    background: var(--color-primario-suave, #eff6ff);
}
 
.alimento-info {
    color: var(--color-texto-suave, #888);
    font-size: 0.82rem;
    margin-top: 4px;
    display: block;
}
 
.preview-nutrientes {
    background: var(--color-superficie, #f9fafb);
    border: 1px solid var(--color-borde, #e5e7eb);
    border-radius: 10px;
    padding: 16px;
    margin: 16px 0;
}
 
.nutrientes-preview-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 8px;
}
 
.np-item {
    display: flex;
    flex-direction: column;
    min-width: 100px;
}
 
.np-label {
    font-size: 0.8rem;
    color: var(--color-texto-suave, #666);
}
 
.np-valor {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primario, #2563eb);
}
 
.dia-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}
 
.dia-nav {
    display: flex;
    gap: 8px;
}
 
.btn-dia-nav {
    padding: 6px 14px;
    border-radius: 6px;
    background: var(--color-superficie, #f0f0f0);
    color: var(--color-texto, #333);
    text-decoration: none;
    font-size: 0.85rem;
}
 
.btn-dia-nav.activo {
    background: var(--color-primario, #2563eb);
    color: white;
}
 
.totales-dia {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
    padding: 16px;
    background: var(--color-superficie, #f9fafb);
    border-radius: 10px;
}
 
.total-item {
    display: flex;
    flex-direction: column;
    min-width: 100px;
}
 
.total-item.destacado .total-valor {
    color: var(--color-primario, #000aaa);
    /* sin font-size 2563eb */
}
 
.total-label {
    font-size: 0.78rem;
    color: var(--color-texto-suave, #666);
}
 
.total-valor {
    display: block;
    margin-bottom: 4px;
}
 
.texto-vacio {
    color: var(--color-texto-suave, #888);
    text-align: center;
    padding: 30px 0;
}
 
.btn-eliminar {
    color: #ef4444;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    padding: 2px 8px;
    border-radius: 4px;
}
 
.btn-eliminar:hover {
    background: #fef2f2;
}
 
.mt-20 { margin-top: 20px; }

.total-objetivo {
    font-size: 0.8rem;
    color: var(--color-texto-suave, #888);
    margin-top: 2px;
}

.total-diferencia {
    font-size: 0.8rem;
    font-weight: 600;
    margin-top: 4px;
}

.total-ok .total-diferencia       { color: #16a34a; }
.total-faltan .total-diferencia   { color: #2563eb; }
.total-excedido .total-diferencia { color: #dc2626; }

/*

.total-ok      { border-top: 3px solid #16a34a; }
.total-faltan  { border-top: 3px solid #2563eb; }
.total-excedido { border-top: 3px solid #dc2626; }
.total-neutro  { border-top: 3px solid var(--color-borde, #e5e7eb); }

*/

.informe-container {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--color-borde, #e5e7eb);
    text-align: center; /* centra el botón */
}

.informe-textarea {
    width: 100%;
    height: 10lh; /* 10 líneas */
    font-family: monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    padding: 14px;
    border: 1px solid var(--color-borde, #e5e7eb);
    border-radius: 8px;
    background: var(--color-superficie, #f9fafb);
    color: var(--color-texto, #333);
    resize: vertical;
    box-sizing: border-box;
}