/* ==========================================================================
   VARIABLES DE ENTORNO Y PALETA DE COLORES
   ========================================================================== */
:root {
    --color-primario: #28a745;       /* Verde Agrícola principal */
    --color-primario-hover: #218838; /* Verde intenso al pasar el ratón */
    --color-oscuro: #2c3e50;         /* Gris azulado para textos y cabeceras */
    --color-fondo: #f4f6f7;          /* Fondo de la aplicación */
    --color-tarjeta: #ffffff;        /* Fondo blanco de contenedores */
    --color-borde: #e2e8f0;          /* Gris suave para líneas de separación */
    --borde-radio: 12px;
    --sombra: 0 4px 15px rgba(0, 0, 0, 0.06);
    --transicion: all 0.25s ease;
}

/* ==========================================================================
   DISEÑO GENERAL Y RESET
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body { 
    background: var(--color-fondo); 
    color: var(--color-oscuro);
    padding: 20px; 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
}

.container { 
    background: var(--color-tarjeta); 
    padding: 30px; 
    border-radius: var(--borde-radio); 
    box-shadow: var(--sombra); 
    width: 100%; 
    max-width: 1000px; 
}

/* ==========================================================================
   CABECERA Y BOTÓN VOLVER (INTEGRADO FLEXIBLE)
   ========================================================================== */
.header-area {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    gap: 15px;
    border-bottom: 2px solid var(--color-borde);
    padding-bottom: 15px;
}

.header-area h2 {
    font-size: 1.6rem;
    font-weight: 700;
}

.btn-volver-menu {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: var(--color-tarjeta); 
    border: 1px solid var(--color-borde);
    border-radius: 30px;
    color: var(--color-oscuro); 
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    transition: var(--transicion);
}

.btn-volver-menu:hover {
    background: var(--color-primario); 
    border-color: var(--color-primario);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.2);
}

/* ==========================================================================
   SISTEMA DE PESTAÑAS (TABS)
   ========================================================================== */
.tabs { 
    display: flex; 
    margin-bottom: 25px; 
    background: #edf2f7;
    border-radius: 8px;
    padding: 5px;
}

.tab-btn { 
    flex: 1; 
    padding: 12px; 
    cursor: pointer; 
    border: none; 
    background: none; 
    font-weight: bold; 
    color: #718096; 
    border-radius: 6px;
    transition: var(--transicion);
    font-size: 0.95rem;
}

.tab-btn:hover {
    color: var(--color-primario);
    background: rgba(40, 167, 69, 0.05);
}

.tab-btn.active { 
    color: #ffffff; 
    background: var(--color-primario); 
    box-shadow: 0 2px 6px rgba(40, 167, 69, 0.15);
}

/* ==========================================================================
   CONTROL DE VISIBILIDAD DE LOS APARTADOS (CORREGIDO)
   ========================================================================== */
.seccion-tab { 
    display: none; 
} 

.seccion-tab.active { 
    display: block; 
    animation: camposFadeIn 0.3s ease;
}

/* ==========================================================================
   FORMULARIO DINÁMICO (GRID RESPONSIVO)
   ========================================================================== */
.grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); 
    gap: 20px; 
    margin-top: 10px; 
}

.campo { 
    display: flex; 
    flex-direction: column; 
    gap: 6px;
}

label { 
    font-size: 11px; 
    font-weight: bold; 
    color: #4a5568; 
    text-transform: uppercase; 
    letter-spacing: 0.5px;
}

input, select { 
    padding: 11px 14px; 
    border: 1px solid #cbd5e0; 
    border-radius: 8px; 
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--color-oscuro);
    background-color: #f8fafc;
    outline: none;
    transition: var(--transicion);
    width: 100%;
}

input:focus, select:focus {
    border-color: var(--color-primario);
    background-color: #ffffff;
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.15);
}

/* ==========================================================================
   BOTONES PRINCIPALES Y SEPARADORES
   ========================================================================== */
.btn-main { 
    background: var(--color-primario); 
    color: white; 
    border: none; 
    padding: 14px; 
    width: 100%; 
    border-radius: 8px; 
    font-size: 16px; 
    cursor: pointer; 
    margin-top: 30px; 
    font-weight: bold; 
    box-shadow: 0 4px 10px rgba(40, 167, 69, 0.15);
    transition: var(--transicion);
}

.btn-main:hover {
    background: var(--color-primario-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(40, 167, 69, 0.25);
}

.separador {
    margin: 40px 0; 
    border: 0;
    border-top: 1px solid var(--color-borde);
}

/* ==========================================================================
   TABLA DE CONTENIDOS (VISTA ESCRITORIO - ORDENADOR)
   ========================================================================== */
.card {
    margin-top: 10px;
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--color-oscuro);
}

.tabla-responsiva { 
    width: 100%; 
    border: 1px solid var(--color-borde);
    border-radius: 8px;
    background: #ffffff;
}

table { 
    width: 100%; 
    border-collapse: collapse; 
}

th { 
    background: #4a5568; 
    color: white; 
    padding: 14px; 
    text-align: left; 
    font-size: 0.9rem;
    font-weight: 600;
}

td { 
    padding: 14px; 
    border-bottom: 1px solid var(--color-borde); 
    color: #2d3748;
    font-size: 0.95rem;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background-color: #f8fafc;
}

/* Estilos de botones de edición/borrado */
.btn-tabla-editar, .btn-tabla-borrar {
    display: inline-block;
    padding: 6px 12px;
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transicion);
    text-align: center;
}

.btn-tabla-editar {
    background-color: #3182ce; /* Azul */
    color: white;
    margin-right: 8px;
}

.btn-tabla-editar:hover {
    background-color: #2b6cb0;
    transform: translateY(-1px);
}

.btn-tabla-borrar {
    background-color: #e53e3e; /* Rojo */
    color: white;
}

.btn-tabla-borrar:hover {
    background-color: #c53030;
    transform: translateY(-1px);
}

/* Animación de entrada suave */
@keyframes camposFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   ADAPTACIÓN PARA DISPOSITIVOS MÓVILES (TABLA EN TARJETAS VERTICALES)
   ========================================================================== */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 20px 15px;
    }

    /* Cabecera flexible apilada en móvil */
    .header-area {
        flex-direction: column-reverse;
        align-items: flex-start;
        gap: 12px;
    }

    .btn-volver-menu {
        width: 100%;
        justify-content: center;
    }

    /* Pestañas de bloques en vertical */
    .tabs {
        flex-direction: column;
        gap: 5px;
        background: transparent;
        padding: 0;
    }

    .tab-btn {
        width: 100%;
        background: #edf2f7;
        border: 1px solid var(--color-borde);
        text-align: center;
    }

    .tab-btn.active {
        border-color: var(--color-primario);
    }

    .grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    /* Desmontaje completo de la estructura de tabla horizontal */
    .tabla-responsiva {
        border: none;
        background: transparent;
    }

    /* Desarmamos la tabla estructuralmente usando clases específicas */
    .tabla-responsiva table, 
    .tabla-responsiva thead, 
    .tabla-responsiva tbody, 
    .tabla-responsiva th, 
    .tabla-responsiva td, 
    .tabla-responsiva tr { 
        display: block !important; 
        width: 100% !important;
    }
    
    .tabla-responsiva thead { 
        display: none !important; /* Escondemos cabeceras horizontales antiguas */
    }
    
    /* Transformación de fila a Tarjeta Vertical */
    .tabla-responsiva tr {
        background: #ffffff !important;
        border: 1px solid var(--color-borde) !important;
        border-radius: 8px !important;
        margin-bottom: 15px !important;
        padding: 12px 15px !important;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02) !important;
    }
    
    /* Celdas alineadas con títulos inyectados */
    .tabla-responsiva td { 
        border-bottom: 1px dashed #edf2f7 !important;
        padding: 10px 0 !important;
        position: relative !important;
        padding-left: 45% !important; /* Hueco izquierdo para los textos fijos */
        text-align: right !important; 
        font-size: 0.95rem !important;
    }

    /* Ocultamos el campo "Textura" (Celda 4) en móvil para optimizar espacio */
    .tabla-responsiva td:nth-of-type(4) {
        display: none !important;
    }

    .tabla-responsiva td:last-child {
        border-bottom: none !important;
        padding-bottom: 5px !important;
    }
    
    /* Títulos laterales de los datos inyectados por CSS */
    .tabla-responsiva td:nth-of-type(1):before { content: "Finca:"; font-weight: 700; position: absolute; left: 0; text-transform: uppercase; font-size: 0.75rem; color: #718096; }
    .tabla-responsiva td:nth-of-type(2):before { content: "Superficie:"; font-weight: 700; position: absolute; left: 0; text-transform: uppercase; font-size: 0.75rem; color: #718096; }
    .tabla-responsiva td:nth-of-type(3):before { content: "Variedad:"; font-weight: 700; position: absolute; left: 0; text-transform: uppercase; font-size: 0.75rem; color: #718096; }
    .tabla-responsiva td:nth-of-type(5):before { content: "Acciones:"; font-weight: 700; position: absolute; left: 0; top: 14px; text-transform: uppercase; font-size: 0.75rem; color: #718096; }

    /* Caja contenedora de los botones alineada en bloque flexible */
    .tabla-responsiva td:nth-of-type(5) {
        display: flex !important;
        justify-content: flex-end !important;
        align-items: center !important;
        gap: 8px !important;
    }

    /* Ajuste dimensional definitivo de los botones de acción para la pantalla táctil */
    .tabla-responsiva .btn-tabla-editar, 
    .tabla-responsiva .btn-tabla-borrar {
        width: auto !important;
        margin: 0 !important;
        display: inline-block !important;
        padding: 6px 14px !important;
        font-size: 0.85rem !important;
    }
}