/* ==========================================================================
   Estilos Globales y Base
   ========================================================================== */
:root {
    --color-primario: #3b82f6;
    --color-primario-hover: #2563eb;
    --color-bg: #f8fafc;
    --color-card: #ffffff;
    --color-texto: #1e293b;
    --border-color: #cbd5e1;
    
    /* Colores de estados de asistencia */
    --bg-p: #dcfce7; --txt-p: #15803d; /* Verde */
    --bg-f: #fee2e2; --txt-f: #b91c1c; /* Rojo */
    --bg-e: #fef9c3; --txt-e: #a16207; /* Amarillo */
    --bg-r: #ffedd5; --txt-r: #c2410c; /* Naranja */
    --bg-pm: #f3e8ff; --txt-pm: #6b21a8; /* Morado */
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-texto);
    line-height: 1.5;
    padding: 20px;
}

.main-header {
    text-align: center;
    margin-bottom: 25px;
}

.main-header h1 {
    font-size: 1.8rem;
    color: #0f172a;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: var(--color-card);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
}

.hidden {
    display: none !important;
}

/* ==========================================================================
   Panel de Controles y Botones
   ========================================================================== */
.controles-panel {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: flex-end;
    background: #f1f5f9;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.control-group label {
    font-size: 0.9rem;
    font-weight: 600;
}

.control-group select, 
.control-group input {
    padding: 8px 12px;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: #fff;
    outline: none;
}

.btn-imprimir {
    background-color: #10b981;
    color: white;
    border: none;
    padding: 9px 16px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s;
    margin-left: auto;
}

.btn-imprimir:hover {
    background-color: #059669;
}

/* ==========================================================================
   Sección de Leyendas
   ========================================================================== */
.leyenda-panel {
    margin-bottom: 20px;
}

.leyenda {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.leyenda span {
    padding: 4px 10px;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 4px;
}

.badge-P { background: var(--bg-p); color: var(--txt-p); }
.badge-F { background: var(--bg-f); color: var(--txt-f); }
.badge-E { background: var(--bg-e); color: var(--txt-e); }
.badge-R { background: var(--bg-r); color: var(--txt-r); }
.badge-PM { background: var(--bg-pm); color: var(--txt-pm); }

/* ==========================================================================
   Tabla de Asistencia Interactiva (Pantalla)
   ========================================================================== */
.tabla-titulo {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #334155;
    border-left: 4px solid var(--color-primario);
    padding-left: 10px;
}

.tabla-responsiva {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.tabla-asistencia {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    background: #fff;
}

.tabla-asistencia th, 
.tabla-asistencia td {
    border: 1px solid var(--border-color);
    padding: 6px 4px;
    text-align: center;
}

.tabla-asistencia th {
    background-color: #f8fafc;
    font-weight: 600;
}

/* Columnas de Dimensiones Fijas */
.col-estudiante {
    text-align: left !important;
    min-width: 260px;
    max-width: 300px;
    padding-left: 12px !important;
    font-weight: 500;
    background-color: #fff;
    position: sticky;
    left: 0;
    z-index: 2;
    box-shadow: 2px 0 5px -2px rgba(0,0,0,0.1);
}

thead th.col-estudiante {
    background-color: #f1f5f9;
    z-index: 3;
}

.col-dia {
    min-width: 38px;
    width: 38px;
}

/* Fines de Semana */
.col-weekend {
    background-color: #f1f5f9 !important;
    color: #94a3b8;
}
.weekend-mark {
    font-size: 0.8rem;
    color: #cbd5e1;
}

/* Selectores de celda dentro de la cuadrícula */
.cel-select {
    width: 100%;
    padding: 4px 0;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    text-align: center;
    font-weight: bold;
    font-size: 0.85rem;
    background-color: #fff;
    cursor: pointer;
    outline: none;
}

/* Colores dinámicos aplicados al select según su estado */
.cel-select.estado-P { background-color: var(--bg-p) !important; color: var(--txt-p) !important; border-color: #bbf7d0; }
.cel-select.estado-F { background-color: var(--bg-f) !important; color: var(--txt-f) !important; border-color: #fecaca; }
.cel-select.estado-E { background-color: var(--bg-e) !important; color: var(--txt-e) !important; border-color: #fef08a; }
.cel-select.estado-R { background-color: var(--bg-r) !important; color: var(--txt-r) !important; border-color: #fed7aa; }
.cel-select.estado-PM { background-color: var(--bg-pm) !important; color: var(--txt-pm) !important; border-color: #e9d5ff; }

/* Mensajes de feedback e iniciales */
.pantalla-mensaje {
    text-align: center;
    padding: 40px 20px;
    color: #64748b;
    font-size: 1.1rem;
}

.td-vacio {
    padding: 30px !important;
    color: #64748b;
}

/* Toast Notificador de Éxito Flotante */
.toast-guardado {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #1e293b;
    color: #ffffff;
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 0.85rem;
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.3);
    z-index: 100;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s, transform 0.3s;
    pointer-events: none;
}
.toast-guardado.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   CONFIGURACIÓN CRÍTICA DE IMPRESIÓN Y GUARDADO PDF
   ========================================================================== */
@media print {
    /* Forzar orientación horizontal y márgenes ajustados */
    @page {
        size: landscape;
        margin: 0.4cm 0.6cm;
    }

    body {
        background: #fff !important;
        color: #000 !important;
        padding: 0 !important;
    }

    /* Ocultar menús, botones y alertas para que no salgan en el PDF */
    .main-header,
    .controles-panel,
    .leyenda-panel,
    #btn-imprimir,
    #pantalla-inicio,
    #pantalla-carga,
    .toast-guardado {
        display: none !important;
    }

    /* Expandir contenedores al 100% */
    .container, 
    .pantallas-wrapper, 
    #pantalla-tabla, 
    .tabla-responsiva {
        width: 100% !important;
        max-width: 100% !important;
        margin: 0 !important;
        padding: 0 !important;
        box-shadow: none !important;
        overflow: visible !important;
    }

    /* Ajustar tipografía de la tabla para impresión masiva */
    .tabla-asistencia {
        width: 100% !important;
        border-collapse: collapse !important;
    }

    .tabla-asistencia th, 
    .tabla-asistencia td {
        font-size: 8.5px !important; /* Tamaño compacto para asegurar ajuste horizontal */
        padding: 3px 1px !important;
        border: 1px solid #1e293b !important; /* Bordes negros limpios */
    }

    /* Quitar el diseño 'sticky' congelado durante la impresión */
    .col-estudiante {
        position: static !important;
        min-width: 180px !important;
        max-width: auto !important;
        box-shadow: none !important;
    }

    /* Limpiar selectores para que parezcan texto plano impreso */
    .cel-select {
        border: none !important;
        background: transparent !important;
        appearance: none;
        -webkit-appearance: none;
        -moz-appearance: none;
        font-size: 9px !important;
        width: 100% !important;
    }

    /* Forzar al navegador a renderizar los colores de fondo de los estados en el PDF */
    * {
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }
}