/* --- 1. Variables de Color y Tipografía --- */
:root {
    --color-primary: #003f5c;
    --color-danger: #ff6361;
    --color-accent1: #ffa600;
    --color-accent2: #bc5090;
    --color-accent3: #58508d;
    --color-text: #333333;
    --color-text-secondary: #767676;
    --color-background: #f0f4f8;
    --color-white: #FFFFFF;
    --font-headings: 'Roboto Slab', serif;
    --font-body: 'Source Sans Pro', sans-serif;
    --border-radius: 12px;
    --shadow-xl: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* --- 2. Reseteo y Estilos Base --- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden; /* Previene el desbordamiento horizontal global */
}
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
h1, h2, h3, h4 { font-family: var(--font-headings); color: var(--color-primary); }
h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.8rem; margin-bottom: 1rem; }
h4 { font-size: 1.25rem; margin-bottom: 0.5rem; }
p { margin-bottom: 1rem; }
a { color: var(--color-primary); text-decoration: none; }
ul, ol { padding-left: 1.5rem; }

/* --- 3. Estructura y Secciones --- */
section { padding: 4rem 0; }
.bg-white { background-color: var(--color-white); }
.section-header { text-align: center; margin-bottom: 3rem; }
.section-header h2 { margin-bottom: 0.5rem; }
.section-header p { max-width: 700px; margin: 0 auto; color: var(--color-text-secondary); }
.grid-container { display: grid; gap: 1.5rem; }
.grid-2-cols { grid-template-columns: repeat(2, 1fr); align-items: start; }
.grid-2-cols-progress { grid-template-columns: 2fr 1fr; align-items: center; }
.grid-2-cols-uneven { grid-template-columns: 1fr 2fr; align-items: center; }
.grid-3-cols { grid-template-columns: repeat(3, 1fr); }
.grid-4-cols { grid-template-columns: repeat(4, 1fr); }
.grid-ia-tools { grid-template-columns: 1fr; gap: 2rem; }

/* --- 4. Componentes --- */
.card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}
.card:hover { transform: translateY(-5px); box-shadow: 0 8px 25px rgba(0,0,0,0.1); }
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}
.btn-primary { background-color: var(--color-primary); color: var(--color-white); }
.btn-primary:hover { background-color: #002c40; }
.btn-accent { background-color: var(--color-accent1); color: var(--color-white); }
.btn-accent:hover { background-color: #d98e00; }
.info-box {
    padding: 1.5rem;
    border-left: 5px solid;
    border-radius: 8px;
    background-color: #f7f9fa;
}
.info-box.tip { border-color: var(--color-accent3); }
.info-box.warning { border-color: var(--color-accent1); }
.info-box.danger { border-color: var(--color-danger); }
.info-box ul { margin-top: 1rem; }

/* --- 5. Cabecera y Navegación --- */
.main-header { padding: 4rem 0; text-align: center; background: var(--color-primary); color: var(--color-white); }
.main-header .logo { display: flex; align-items: center; justify-content: center; gap: 1rem; color: var(--color-white); }
.main-header h1 { color: var(--color-white); }
.main-header .subtitle { font-size: 1.2rem; color: rgba(255,255,255,0.8); }
.main-nav { background-color: rgba(255,255,255,0.9); backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 50; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
.nav-container { display: flex; justify-content: center; align-items: center; }
.main-nav ul { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 1.5rem; padding: 0.75rem 0; }
.main-nav a { font-weight: 600; color: var(--color-primary); padding: 0.5rem; border-bottom: 2px solid transparent; }
.main-nav a:hover { border-bottom-color: var(--color-primary); }
.mobile-menu-button { display: none; }

/* --- 6. Componentes Específicos de Secciones --- */
/* Hero */
.hero .hero-content { text-align: center; }
.hero .lead { font-size: 1.25rem; max-width: 800px; margin: 1.5rem auto 2.5rem auto; }

/* Flujo de Hierro */
.iron-flow-container { display: flex; flex-direction: row; justify-content: center; align-items: start; gap: 1.5rem; margin: 2rem 0; }
.iron-flow-item { text-align: center; max-width: 200px; }
.iron-flow-item .icon { font-size: 2.5rem; line-height: 1; margin-bottom: 0.5rem; }
.iron-flow-arrow { font-size: 2.5rem; font-weight: bold; color: var(--color-primary); }
.iron-flow-arrow::before { content: '→'; }

/* Tabs */
.tab-buttons { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; border-bottom: 2px solid #ddd; padding-bottom: 1rem; }
.tab-button { padding: 0.5rem 1rem; border: 2px solid transparent; border-radius: 8px; background-color: #e6eaf0; cursor: pointer; transition: all 0.3s ease; font-weight: 600; }
.tab-button.active, .tab-button:hover { background-color: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }
.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.5s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* Diagnóstico */
.genotype-card { transition: all 0.3s ease; }
.risk-badge { padding: 0.25rem 0.75rem; border-radius: 9999px; font-size: 0.75rem; font-weight: bold; text-transform: uppercase; color: white; }
.symptom-list { list-style: none; padding-left: 0; }
.symptom-list li { display: flex; align-items: start; gap: 1rem; }
.symptom-list span { font-size: 1.5rem; }

/* Tratamiento */
.feature-list { list-style: none; padding: 0; margin-top: auto; }
.feature-list li { margin-top: 0.5rem; }
.feature-good::before { content: '✓ '; color: var(--color-accent3); font-weight: bold; }
.feature-bad::before { content: '✗ '; color: var(--color-danger); font-weight: bold; }
.kpi-card { text-align: center; color: white; padding: 1.5rem; border-radius: var(--border-radius); }
.kpi-value { font-size: 2.5rem; font-weight: bold; line-height: 1; }
.kpi-label { margin-top: 0.5rem; font-size: 1rem; margin-bottom: 0; }

/* =================================================================== */
/* ============ INICIO DE LA CORRECCIÓN "PLATO INTELIGENTE" ============ */
/* =================================================================== */

/* Nutrición */
.infographic-title { text-align: center; }
.infographic-subtitle { text-align: center; max-width: 700px; margin: 0 auto 2rem auto; color: var(--color-text-secondary); }
.chart-container { position: relative; width: 100%; max-width: 600px; margin-left: auto; margin-right: auto; height: 350px; }
.warning-card { text-align: center; padding: 1.5rem; border-radius: var(--border-radius); background-color: var(--color-white); border: 1px solid #ffe0e0; }
.warning-card .icon { font-size: 2.5rem; }
.smart-plate { position: relative; width: 100%; max-width: 250px; aspect-ratio: 1 / 1; border-radius: 50%; background-color: #e0e0e0; margin: 1rem auto; overflow: hidden; border: 5px solid white; box-shadow: 0 4px 10px rgba(0,0,0,0.1); }

/* CORRECCIÓN: Se quita 'position: absolute' de la regla general para que no afecte a las secciones inferiores. */
.plate-section {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-weight: bold;
    color: white;
}
/* CORRECCIÓN: Se añade 'position: absolute' únicamente a la sección de vegetales, que es la que lo necesita. */
.vegetables {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background-color: var(--color-accent3);
}
.smart-plate-bottom { position: absolute; bottom: 0; left: 0; width: 100%; height: 50%; display: flex; }
.protein { width: 50%; height: 100%; background-color: var(--color-accent1); }
.grains { width: 50%; height: 100%; background-color: var(--color-accent2); }

/* =================================================================== */
/* ============= FIN DE LA CORRECCIÓN "PLATO INTELIGENTE" ============= */
/* =================================================================== */

/* Podcast CTA */
.podcast-cta-container { margin-top: 4rem; padding-top: 2rem; border-top: 1px dashed #ccc; }
.podcast-cta { display: flex; align-items: center; flex-wrap: wrap; gap: 1.5rem; }
.podcast-cta .podcast-icon { font-size: 3rem; color: var(--color-primary); flex-shrink: 0; }
.podcast-main-content { flex-grow: 1; }
.podcast-cta .podcast-text h4 { margin-bottom: 0.25rem; }
.podcast-cta .podcast-text p { margin-bottom: 0.5rem; color: var(--color-text-secondary); }
.podcast-cta .podcast-btn { flex-shrink: 0; }
.podcast-cta audio { width: 100%; height: 40px; margin-top: 0.5rem; }

/* Herramientas IA */
.ia-section { background-color: var(--color-background); }
.ia-section .section-header h2, .ia-section .section-header p { color: var(--color-primary); }
.ia-panel { background-color: var(--color-white); padding: 2rem; border-radius: var(--border-radius); box-shadow: 0 4px 15px rgba(0,0,0,0.08); }
.tool-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
.tool-title h3 { margin-bottom: 0.5rem; }
.tool-title p { color: var(--color-text-secondary); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; }
.form-group.full-width { grid-column: 1 / -1; }
.form-group label { margin-bottom: 0.5rem; font-weight: 600; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 1rem;
}
.ia-button { width: 100%; margin-top: 1rem; grid-column: 1 / -1; }
.ia-results { margin-top: 1.5rem; }
.recipe-card { background-color: var(--color-white); padding: 2rem; border-radius: var(--border-radius); border-top: 5px solid var(--color-primary); }
.safety-explanation { background-color: #f7f9fa; padding: 1rem; border-radius: 8px; margin: 1rem 0; }
.ingredients-steps { display: grid; grid-template-columns: 1fr 2fr; gap: 2rem; }
.improvement-recommendation { margin-top: 1.5rem; padding: 1.5rem; background-color: #f0f4f8; border-left: 5px solid var(--color-accent2); border-radius: 8px; }
.risk-level { display: inline-block; padding: 0.25rem 0.75rem; border-radius: 9999px; font-size: 0.75rem; font-weight: bold; color: white; text-transform: uppercase; vertical-align: middle; margin-left: 1rem; }
.risk-Bajo { background-color: var(--color-accent3); }
.risk-Moderado { background-color: var(--color-accent1); }
.risk-Alto, .risk-Muy-Alto { background-color: var(--color-danger); }
.absorption-bar { width: 100%; height: 20px; background-color: #e0e0e0; border-radius: 10px; overflow: hidden; }
.absorption-bar > div { height: 100%; color: white; display: flex; align-items: center; justify-content: center; font-size: 0.8rem; font-weight: bold; transition: width 0.5s ease-in-out; }
.absorption-Bajo { background-color: #58508d; }
.absorption-Moderado { background-color: #bc5090; }
.absorption-Alto, .absorption-Muy-Alto { background-color: #ff6361; }

/* Footer */
.footer { background-color: var(--color-primary); color: #e0e0e0; padding: 4rem 0; }
.footer .logo span { color: var(--color-white); }
.footer p { margin-bottom: 0.5rem; }
.footer .disclaimer { font-size: 0.85rem; max-width: 700px; margin: 1.5rem auto 0 auto; color: #aaa; }


/* --- 7. Responsive Design --- */
@media (max-width: 768px) {
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.8rem; }
    h3 { font-size: 1.5rem; }
    section { padding: 3rem 0; }

    /* Menú móvil */
    .mobile-menu-button {
        display: block;
        background-color: var(--color-primary);
        color: white;
        padding: 0.5rem 1rem;
        border-radius: 8px;
        cursor: pointer;
        border: none;
        font-weight: 600;
        margin: 0.5rem 0;
        width: 100%;
    }
    .nav-container {
        flex-direction: column;
        align-items: flex-start;
    }
    .main-nav .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        gap: 0;
    }
    .main-nav .nav-links.active {
        display: flex;
    }
    .main-nav .nav-links li {
        width: 100%;
        text-align: center;
    }
    .main-nav .nav-links a {
        display: block;
        padding: 1rem;
        border-bottom: 1px solid #eee;
    }

    /* Columnas */
    .grid-2-cols,
    .grid-3-cols,
    .grid-4-cols,
    .grid-2-cols-uneven,
    .grid-2-cols-progress {
        grid-template-columns: 1fr !important;
    }

    /* Flujo de Hierro en Móvil */
    .iron-flow-container { flex-direction: column; align-items: center; }
    .iron-flow-arrow::before { content: '↓'; }

    /* Gráficos */
    .chart-container {
        height: 300px; /* Altura base para la mayoría de gráficos en móvil */
    }
    
    /* CORRECCIÓN: Se reduce la altura de este gráfico para evitar la deformación vertical */
    #inhibitorEnhancerChart {
        height: 280px !important;
    }

    #riskChart {
        height: 350px !important;
    }
    #ferritinJourneyChart, #ironDuelChart {
        height: 400px !important;
    }

    /* Herramientas IA */
    .form-grid { grid-template-columns: 1fr !important; }
    .ingredients-steps { grid-template-columns: 1fr !important; }


    /* Podcast CTA */
    .podcast-cta {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .podcast-cta .podcast-main-content {
        width: 100%;
    }
     .podcast-cta .podcast-btn {
        width: 100%;
    }

    /* Regla para evitar desbordamientos en grids (solución anterior) */
    .grid-container > .card {
        min-width: 0;
    }
}