:root {
    --bg-main: #060913;
    --card-bg: rgba(11, 17, 32, 0.75);
    --modal-bg: rgba(15, 23, 42, 0.92);
    --border-color: rgba(255, 255, 255, 0.12);
    --primary-accent: #38BDF8;
    --gold-accent: #F59E0B;
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --input-bg: rgba(30, 41, 59, 0.7);
    --focus-ring: rgba(56, 189, 248, 0.3);
    --radius: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    position: relative;
    overflow-x: hidden;
}

/* Imagen de Fondo de Minería con Blur */
.bg-image {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/fondo_lig.webp') center/cover no-repeat;
    filter: blur(6px) scale(1.05);
    z-index: -2;
    transform: translateZ(0);
}

.bg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(6, 9, 19, 0.65) 0%, rgba(6, 9, 19, 0.88) 100%);
    z-index: -1;
}

/* Tarjeta Principal Glassmorphism */
.container {
    width: 100%;
    max-width: 760px;
    z-index: 1;
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 3.5rem 2.5rem;
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.6);
    text-align: center;
}

/* Header */
.header {
    margin-bottom: 2.5rem;
}

.logo-wrapper {
    margin-bottom: 1.5rem;
}

.logo {
    max-width: 260px;
    height: auto;
    object-fit: contain;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(245, 158, 11, 0.12);
    color: var(--gold-accent);
    border: 1px solid rgba(245, 158, 11, 0.25);
    padding: 0.45rem 1.1rem;
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin-bottom: 1.2rem;
}

.description {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.65;
    max-width: 640px;
    margin: 0 auto 2.2rem auto;
}

/* Botón Disparador CTA */
.cta-trigger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.85rem;
    background: linear-gradient(135deg, #0284C7 0%, #0369A1 100%);
    color: #FFFFFF;
    border: none;
    padding: 1.1rem 2.2rem;
    border-radius: 12px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 10px 25px -5px rgba(2, 132, 199, 0.4);
}

.cta-trigger:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px -5px rgba(2, 132, 199, 0.6);
    background: linear-gradient(135deg, #38BDF8 0%, #0284C7 100%);
}

/* Modal Emergente */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(3, 7, 18, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    padding: 1rem;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    background: var(--modal-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    width: 100%;
    max-width: 680px;
    padding: 2.5rem;
    position: relative;
    transform: scale(0.92) translateY(20px);
    transition: var(--transition);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-overlay.active .modal-container {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 1.5rem;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.modal-close:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #EF4444;
    border-color: rgba(239, 68, 68, 0.4);
}

.form-header {
    text-align: left;
    margin-bottom: 1.8rem;
}

.form-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.form-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Formulario */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    text-align: left;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

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

label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
}

.required {
    color: #EF4444;
}

input, select, textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394A3B8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.2rem;
    cursor: pointer;
}

select option {
    background-color: #0F172A;
    color: var(--text-primary);
}

input:focus, select:focus, textarea:focus {
    border-color: var(--primary-accent);
    box-shadow: 0 0 0 4px var(--focus-ring);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    background: linear-gradient(135deg, #0284C7 0%, #0369A1 100%);
    color: #FFFFFF;
    border: none;
    padding: 1rem 2rem;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 0.5rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(2, 132, 199, 0.4);
}

/* Respuestas Ajax */
.response-message {
    padding: 1rem;
    border-radius: 10px;
    font-size: 0.9rem;
    margin-bottom: 1.2rem;
    display: none;
}

.response-message.success {
    display: block;
    background: rgba(34, 197, 94, 0.15);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #4ADE80;
}

.response-message.error {
    display: block;
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #FCA5A5;
}

/* Footer & Social */
.footer {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
}

.footer p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 1.2rem 0;
}

.social-links a {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-accent);
    color: #0F172A;
    transform: translateY(-3px);
}

.copyright {
    font-size: 0.8rem !important;
    color: #64748B !important;
}

/* Responsividad */
@media (max-width: 640px) {
    .glass-card {
        padding: 2.5rem 1.5rem;
    }
    .modal-container {
        padding: 1.75rem 1.25rem;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .header h1 {
        font-size: 1.7rem;
    }
}