/* --- FONDO EXCLUSIVO DEL FORMULARIO --- */
body {
    background-image: url('../img/back_form.png');
    background-size: cover;
    background-position: center calc(100% - 60px); 
    background-repeat: no-repeat;
    background-attachment: fixed;
}

/* Franja gris superior (Fuerza el header a verse oscuro) */
.main-header {
    background-color: var(--gris-oscuro) !important;
}

.main-header a {
    color: var(--blanco) !important;
}

/* Contenedor principal del formulario */
.form-main-content {
    flex: 1;
    padding: 40px 20px;
    display: flex;
    justify-content: center;
}

/* Tarjeta del formulario (Ahora es un contenedor transparente) */
.form-card {
    width: 100%;
    max-width: 900px;
    background-color: transparent; 
    border: none;
    box-shadow: none;
    padding: 0;
}

/* --- ENCABEZADO CON LOGO --- */
.form-header-logos {
    text-align: center;
    margin-bottom: 40px;
}

.pre-logo-text {
    font-weight: bold;
    font-size: 22px;
    color: var(--gris-oscuro);
    margin: 0 0 5px 0;
}

.form-logo {
    max-width: 320px; 
    width: 100%;
    height: auto;
    filter: drop-shadow(0px 8px 12px rgba(0,0,0,0.15));
    margin-bottom: 15px;
}

.form-subtitle {
    color: var(--gris-oscuro);
    font-weight: bold;
    font-size: 16px;
    margin: 0;
}

/* --- DISEÑO DE CAJAS TIPO EXPEDIENTE --- */
fieldset {
    background-color: var(--blanco);
    border: 3px solid var(--gris-oscuro); /* Borde grueso */
    border-radius: 12px; /* Esquinas muy redondas */
    padding: 40px 30px 30px;
    margin-bottom: 40px;
    position: relative;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

legend {
    background-color: var(--gris-oscuro);
    color: var(--blanco);
    padding: 10px 25px;
    border-radius: 8px; 
    font-weight: bold;
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-left: -10px; 
}

/* Sistema de cuadrícula para los inputs */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

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

.input-group {
    display: flex;
    flex-direction: column;
}

.full-width {
    grid-column: 1 / -1;
}

/* --- DISEÑO DE INPUTS --- */
.input-group label {
    margin-bottom: 8px;
    font-weight: bold;
    color: var(--gris-oscuro);
    font-size: 14px;
}

.input-group input[type="text"],
.input-group input[type="number"],
.input-group input[type="tel"],
.input-group input[type="email"],
.input-group select {
    padding: 14px 15px;
    border: 2px solid var(--gris-oscuro); 
    border-radius: 8px; 
    font-size: 15px;
    font-family: Arial, sans-serif;
    color: var(--negro);
    transition: all 0.3s ease;
    background-color: var(--blanco);
    width: 100%;
    box-sizing: border-box; 
    text-overflow: ellipsis;
    overflow: hidden;
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(69, 74, 84, 0.2); 
}

/* Botones de subida de archivo */
.input-group input[type="file"] {
    padding: 10px;
    font-size: 14px;
    background-color: #FAFAFA;
    border: 2px dashed var(--gris-oscuro); 
    border-radius: 8px;
    cursor: pointer;
    color: var(--gris-oscuro);
    width: 100%;
    box-sizing: border-box;
}

.input-group input[type="file"]:hover {
    background-color: #F0F0F0;
}

/* Flecha personalizada del select */
.input-group select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23454A54' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
    background-size: 16px;
    padding-right: 40px;
    cursor: pointer;
}

/* Enlaces de descarga de documentos */
.doc-link {
    color: #2563eb;
    text-decoration: none;
    transition: color 0.3s ease;
}

.doc-link i {
    font-size: 11px;
    margin-left: 4px;
    color: #2563eb;
}

.doc-link:hover, .doc-link:hover i {
    color: var(--gris-oscuro);
    text-decoration: underline;
}

.note {
    font-size: 13px;
    color: var(--gris-424);
    margin: 0;
    line-height: 1.5;
}

/* --- BOTÓN DE ENVIAR  --- */
.submit-container {
    display: flex;
    justify-content: center;
    margin-top: 30px;
}

.submit-container .action-btn {
    background-color: var(--gris-oscuro);
    color: var(--blanco);
    border: 3px solid var(--gris-oscuro);
    padding: 16px 40px;
    font-size: 18px;
    font-weight: bold;
    border-radius: 12px; 
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.submit-container .action-btn i {
    font-size: 20px;
}

.submit-container .action-btn:hover {
    background-color: var(--negro);
    border-color: var(--negro);
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.15);
}

/* --- FIX PARA EL FOOTER (Consistencia con inicio) --- */
.main-footer {
    background-color: transparent !important;
    border-top: none !important;
    box-shadow: none !important;
}

/* --- PANTALLA DE CARGA --- */
.loading-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    text-align: center;
    padding: 20px;
}

.spinner {
    width: 60px; height: 60px;
    border: 6px solid var(--gris-cool-1c);
    border-top: 6px solid var(--gris-oscuro);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* --- RESPONSIVE (CELULARES) --- */
@media (max-width: 768px) {
    .form-grid, .split-grid { 
        grid-template-columns: 1fr; 
        gap: 15px; 
    }
    .form-main-content {
        padding: 30px 15px;
    }
    fieldset {
        padding: 30px 20px 20px;
    }
    .form-logo {
        max-width: 250px;
    }
    .submit-container .action-btn {
        width: 100%;
        justify-content: center;
    }
}