/* --- VARIABLES DE COLOR (Asegurar consistencia) --- */
:root {
    --blue-dark: #00264e;
    --blue-medium: #1a4199;
    --orange-main: #d81b35;
    --text-gray: #4a5568;
    --bg-light: #f8fafc;
    --border-color: #e2e8f0;
}

/* --- SECCIÓN INTRODUCCIÓN (LIBRO) --- */
.quote-intro-section {
    padding: 60px 20px;
    background-color: #ffffff;
}
.quote-intro-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}
.quote-title {
    color: var(--blue-dark);
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 15px;
    letter-spacing: -1px;
}
.quote-subtitle {
    color: var(--text-gray); 
    font-size: 1.15rem;
    line-height: 1.6;
    max-width: 600px;
}
.icon-circle-large {
    width: 110px;
    height: 110px;
    background-color: #f0f7ff; 
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 25px rgba(0, 51, 153, 0.05); 
}
.box-icon-container.libro-icon::before {
    content: "📖"; 
    font-size: 3rem;
}

/* --- CONTENEDOR DEL FORMULARIO --- */
.contact-form-section {
    padding: 60px 20px;
    background-color: var(--bg-light);
}

.form-single-container {
    max-width: 1000px;
    margin: 0 auto;
}

.form-main-container {
    background: white;
    padding: 45px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.04);
}

/* --- ELEMENTOS DEL FORMULARIO --- */
.section-form-title {
    font-size: 1.25rem;
    color: var(--blue-dark);
    border-bottom: 2px solid var(--bg-light);
    padding-bottom: 15px;
    margin: 35px 0 25px 0;
    font-weight: 700;
}
.form-group-section:first-child .section-form-title {
    margin-top: 0;
}

.input-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.input-field { 
    flex: 1; 
    display: flex; 
    flex-direction: column; 
    gap: 8px; 
}

.full-width { 
    width: 100%; 
    margin-bottom: 20px; 
}

label { 
    font-size: 0.85rem; 
    font-weight: 700; 
    color: var(--text-gray); 
}

.required { 
    color: var(--orange-main); 
    margin-left: 3px; 
}

input, select, textarea {
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: all 0.3s;
    background-color: #fff;
}

input:focus, select:focus, textarea:focus { 
    outline: none; 
    border-color: var(--blue-medium); 
    box-shadow: 0 0 0 3px rgba(26, 65, 153, 0.1);
}

textarea { 
    height: 110px; 
    resize: none; 
}

/* --- RADIOS Y CHECKBOXES --- */
.radio-group {
    display: flex;
    gap: 25px;
    padding: 5px 0;
}
.radio-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-weight: 600;
    color: var(--blue-dark);
}

.checkbox-container {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.85rem;
    margin-bottom: 15px;
    cursor: pointer;
    color: var(--text-gray);
    line-height: 1.4;
}

/* --- BLOQUES LEGALES --- */
.legal-box {
    background: #f1f5f9;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 25px;
    border-left: 4px solid var(--blue-dark);
}
.legal-box p {
    font-size: 0.8rem;
    color: #4a5568;
    margin-bottom: 8px;
    line-height: 1.5;
}

/* --- ESTADOS Y UTILIDADES --- */
.d-none-custom {
    display: none;
}
.subtitle-blue {
    color: var(--blue-medium) !important;
    border-color: var(--border-color) !important;
}

/* --- BOTÓN DE ENVÍO --- */
.form-footer {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.submit-btn {
    width: 100%;
    background-color: var(--orange-main);
    color: white;
    padding: 18px;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    transition: 0.3s;
    margin-top: 20px;
}

.submit-btn:hover { 
    background-color: #a53218; 
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(216, 27, 53, 0.3);
}

/* --- RESPONSIVIDAD --- */
@media (max-width: 850px) {
    .input-row { 
        flex-direction: column; 
        gap: 20px; 
    }
    .form-main-container { 
        padding: 25px; 
    }
    .quote-title { 
        font-size: 2.2rem; 
    }
    .quote-intro-container {
        flex-direction: column;
        text-align: center;
    }
}