/* ==========================================================================
   ESTILOS BASE Y CONFIGURACIÓN DE PÁGINA
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: #f1f5f9;
    color: #1e293b;
    padding: 20px;
    line-height: 1.5;
}

/* ENCABEZADO */
.header-global {
    max-width: 1400px;
    margin: 0 auto 20px auto;
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    color: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.header-global h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.header-global p {
    font-size: 1rem;
    opacity: 0.9;
    margin-top: 4px;
}

/* ==========================================================================
   ARQUITECTURA DE DOS COLUMNAS (DASHBOARD) - COMPORTAMIENTO PANTALLA
   ========================================================================== */
.dashboard-container {
    display: grid;
    grid-template-columns: 35fr 65fr; /* Distribución asimétrica exacta: 35% izquierda / 65% derecha */
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
    align-items: start;
}

.column-left, .column-right {
    display: flex;
    flex-direction: column;
    gap: 20px; /* Separación vertical uniforme entre tarjetas */
}

/* ==========================================================================
   DISEÑO DE COMPONENTES (TARJETAS E INPUTS)
   ========================================================================== */
.card {
    background-color: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.card h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #334155;
    margin-bottom: 12px;
    border-bottom: 1px solid #f1f5f9;
    padding-bottom: 6px;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.input-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: #475569;
    width: 65px;
}

/* HOMOGENEIZACIÓN DE INPUTS Y SELECTORES */
.card input[type="text"], 
.card input[type="number"], 
.card select {
    flex: 1;
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    background-color: #ffffff;
    color: #1e293b;
    font-size: 0.95rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.card input:focus, 
.card select:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* ESTILOS DE LA TABLA EXPERIMENTAL */
table {
    border-spacing: 0;
    margin-top: 10px;
}

th {
    background-color: #f8fafc;
    color: #475569;
    font-weight: 600;
    font-size: 0.85rem;
    padding: 10px;
    border-bottom: 2px solid #e2e8f0;
}

td {
    padding: 6px;
    border-bottom: 1px solid #f1f5f9;
}

td input {
    width: 100%;
    padding: 6px;
    border: 1px solid #e2e8f0;
    border-radius: 4px;
    text-align: right;
    font-family: monospace;
}

/* ELEMENTOS DEL PIE DE PÁGINA */
.footer-global {
    max-width: 1400px;
    margin: 40px auto 0 auto;
    text-align: center;
    font-size: 0.85rem;
    color: #64748b;
    border-top: 1px solid #e2e8f0;
    padding-top: 20px;
}

/* ==========================================================================
   REGLAS EXCLUSIVAS PARA IMPRESIÓN LIMPIA (PDF COMPACTO)
   ========================================================================== */
@media print {

    /* ── Reset general ── */
    * { box-sizing: border-box; }

    body {
        background-color: #ffffff !important;
        padding: 0 !important;
        margin: 0 !important;
        color: #000000 !important;
        font-size: 10px !important;
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif !important;
    }

    /* ── Elementos que desaparecen completamente ── */
    .header-global,
    .footer-global,
    .no-print,
    button,
    .column-left,
    .column-right,
    .dashboard-container,
    .panel-resultado-final {
        display: none !important;
    }

    /* ── Contenedor raíz de impresión ──
       JS lo crea dinámicamente antes de imprimir y lo elimina después.
       Ocupa toda la página y organiza las secciones en columna. */
    #print-root {
        display: flex !important;
        flex-direction: column !important;
        gap: 10px !important;
        width: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    /* ── Fila superior: tabla de datos + panel de información ── */
    #print-fila-superior {
        display: flex !important;
        flex-direction: row !important;
        gap: 12px !important;
        align-items: flex-start !important;
        width: 100% !important;
        break-inside: avoid !important;
    }

    /* Tabla de datos: ocupa ~60% del ancho */
    #print-tabla {
        flex: 0 0 60% !important;
        max-width: 60% !important;
    }

    /* Panel de información (variables + incertidumbre): ocupa el resto */
    #print-info {
        flex: 1 1 auto !important;
    }

    /* ── Secciones intermedias y finales: ancho completo ── */
    #print-grafica,
    #print-residuos,
    #print-resultados {
        width: 100% !important;
        break-inside: avoid !important;
    }

    /* ── Estilo común de tarjeta de impresión ── */
    .print-card {
        border: 1px solid #94a3b8 !important;
        border-radius: 5px !important;
        padding: 8px 10px !important;
        background: #ffffff !important;
        break-inside: avoid !important;
    }

    .print-card-title {
        font-size: 10px !important;
        font-weight: 700 !important;
        color: #334155 !important;
        border-bottom: 1px solid #e2e8f0 !important;
        padding-bottom: 4px !important;
        margin-bottom: 6px !important;
        text-transform: uppercase !important;
        letter-spacing: 0.04em !important;
    }

    /* ── Tabla de datos experimental ── */
    .print-card table {
        width: 100% !important;
        border-collapse: collapse !important;
        margin: 0 !important;
    }

    .print-card th {
        background-color: #f1f5f9 !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
        font-size: 9px !important;
        font-weight: 700 !important;
        padding: 4px 6px !important;
        border: 1px solid #cbd5e1 !important;
        text-align: center !important;
    }

    .print-card td {
        font-size: 9px !important;
        padding: 3px 6px !important;
        border: 1px solid #e2e8f0 !important;
        text-align: right !important;
        font-family: monospace !important;
    }

    /* ── Panel de información (variables + incertidumbre) ── */
    .print-info-fila {
        display: flex !important;
        justify-content: space-between !important;
        padding: 3px 0 !important;
        border-bottom: 1px solid #f1f5f9 !important;
        font-size: 9.5px !important;
    }

    .print-info-fila:last-child {
        border-bottom: none !important;
    }

    .print-info-label {
        color: #475569 !important;
        font-weight: 600 !important;
    }

    .print-info-valor {
        font-family: monospace !important;
        color: #1e293b !important;
    }

    /* ── Gráfica ── */
    #print-grafica canvas,
    #print-residuos canvas {
        width: 100% !important;
        max-width: 100% !important;
        height: auto !important;
        display: block !important;
    }

    /* ── Cuadro de resultados: tabla de dos columnas ── */
    #print-resultados .print-resultado-grid {
        display: grid !important;
        grid-template-columns: 1fr 1fr !important;
        gap: 4px 20px !important;
        margin-top: 4px !important;
    }

    .print-resultado-item {
        display: flex !important;
        justify-content: space-between !important;
        align-items: baseline !important;
        padding: 3px 0 !important;
        border-bottom: 1px solid #f1f5f9 !important;
        font-size: 9.5px !important;
    }

    .print-resultado-item:last-child { border-bottom: none !important; }

    .print-resultado-label {
        color: #475569 !important;
        font-weight: 600 !important;
        padding-right: 8px !important;
    }

    .print-resultado-valor {
        font-family: monospace !important;
        color: #1e293b !important;
        white-space: nowrap !important;
    }

    /* Resultado final destacado (m ± Δm) */
    .print-resultado-final {
        text-align: center !important;
        font-size: 12px !important;
        font-weight: 800 !important;
        font-family: monospace !important;
        color: #1e3a8a !important;
        padding: 6px 0 8px 0 !important;
        border-bottom: 1px solid #e2e8f0 !important;
        margin-bottom: 8px !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }

    /* ── Página ── */
    @page {
        size: A4 portrait;
        margin: 1.2cm 1.5cm;
    }
}