/* ============================================
   YIA | ESTILOS PRINCIPALES
   Layout base, tipografía, secciones
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;900&display=swap');

/* === BASE === */
body {
    font-family: var(--fuente-principal);
    font-size: var(--fs-base);
    font-weight: var(--fw-regular);
    background-color: var(--color-bg);
    color: var(--color-texto);
    overflow-x: hidden;
}

/* === CONTENEDOR === */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* === TIPOGRAFÍA === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--fuente-display);
    font-weight: var(--fw-bold);
    letter-spacing: -0.02em;
    color: var(--color-blanco);
}

h1 {
    font-size: var(--fs-4xl);
    font-weight: var(--fw-black);
    line-height: 1.05;
}

h2 {
    font-size: var(--fs-3xl);
    line-height: 1.15;
}

h3 {
    font-size: var(--fs-xl);
    font-weight: var(--fw-semibold);
}

h4 {
    font-size: var(--fs-lg);
    font-weight: var(--fw-semibold);
}

p {
    color: var(--color-texto-suave);
    font-size: var(--fs-base);
    line-height: 1.7;
}

.text-azul {
    color: var(--color-azul);
}

.text-teal {
    color: var(--color-teal);
}

.text-gradiente {
    background: var(--gradiente-yia);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-center {
    text-align: center;
}

/* === SECCIONES === */
section {
    padding: var(--sp-9) 0;
    position: relative;
}

.section-header {
    max-width: 720px;
    margin: 0 auto var(--sp-8);
    text-align: center;
}

.section-eyebrow {
    display: inline-block;
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-azul-claro);
    margin-bottom: var(--sp-4);
    padding: var(--sp-2) var(--sp-4);
    border: 1px solid var(--color-borde);
    border-radius: var(--radio-full);
    background: rgba(9, 124, 145, 0.05);
}

.section-title {
    margin-bottom: var(--sp-4);
}

.section-subtitle {
    font-size: var(--fs-md);
    color: var(--color-texto-suave);
}

/* === HERO === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--altura-header);
    padding-bottom: var(--sp-8);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(23, 53, 103, 0.25) 0%, transparent 45%),
        radial-gradient(circle at 80% 70%, rgba(9, 124, 145, 0.18) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(9, 124, 145, 0.08) 0%, transparent 60%);
    z-index: 0;
    pointer-events: none;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(9, 124, 145, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(9, 124, 145, 0.06) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 960px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    padding: var(--sp-2) var(--sp-5);
    background: rgba(9, 124, 145, 0.08);
    border: 1px solid var(--color-borde);
    border-radius: var(--radio-full);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-azul-claro);
    margin-bottom: var(--sp-6);
    animation: fadeInDown 0.8s ease;
}

.hero-badge .pulse {
    width: 8px;
    height: 8px;
    background: var(--color-teal);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.hero h1 {
    margin-bottom: var(--sp-5);
    animation: fadeInUp 0.8s ease 0.1s backwards;
}

.hero h1 .highlight {
    background: var(--gradiente-yia);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: var(--fs-md);
    max-width: 680px;
    margin: 0 auto var(--sp-7);
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-cta-group {
    display: flex;
    gap: var(--sp-4);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.3s backwards;
    margin-bottom: var(--sp-8);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--sp-5);
    max-width: 800px;
    margin: 0 auto;
    padding-top: var(--sp-7);
    border-top: 1px solid var(--color-borde);
    animation: fadeIn 1s ease 0.5s backwards;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--fs-3xl);
    font-weight: var(--fw-black);
    background: var(--gradiente-yia);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: var(--sp-2);
}

.stat-label {
    font-size: var(--fs-sm);
    color: var(--color-texto-suave);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* === ANIMACIONES === */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        box-shadow: 0 0 0 0 rgba(9, 124, 145, 0.7);
    }
    50% {
        opacity: 0.6;
        box-shadow: 0 0 0 10px rgba(9, 124, 145, 0);
    }
}

/* === SERVICIOS === */
.servicios-section {
    background: var(--color-bg-alt);
}

.servicios-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-5);
}

@media (max-width: 1100px) {
    .servicios-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .servicios-grid { grid-template-columns: 1fr; }
}

.servicio-card {
    background: var(--color-bg-elevado);
    border: 1px solid var(--color-borde-suave);
    border-radius: var(--radio-lg);
    padding: var(--sp-6);
    transition: all var(--transicion-media);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.servicio-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradiente-yia);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transicion-media);
}

.servicio-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-azul);
    box-shadow: var(--sombra-azul);
}

.servicio-card:hover::before {
    transform: scaleX(1);
}

.servicio-icon {
    width: 56px;
    height: 56px;
    background: var(--gradiente-yia-suave);
    border: 1px solid var(--color-borde);
    border-radius: var(--radio-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--sp-5);
    color: var(--color-azul-claro);
    font-size: var(--fs-xl);
}

.servicio-title {
    margin-bottom: var(--sp-3);
    font-size: var(--fs-lg);
}

.servicio-desc {
    font-size: var(--fs-sm);
    margin-bottom: var(--sp-5);
    flex-grow: 1;
}

.servicio-features {
    margin-bottom: var(--sp-5);
}

.servicio-features li {
    padding: var(--sp-2) 0;
    font-size: var(--fs-sm);
    color: var(--color-texto-suave);
    display: flex;
    align-items: flex-start;
    gap: var(--sp-2);
}

.servicio-features li::before {
    content: '→';
    color: var(--color-teal);
    font-weight: var(--fw-bold);
    flex-shrink: 0;
}

.servicio-link {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    color: var(--color-azul-claro);
    font-weight: var(--fw-semibold);
    font-size: var(--fs-sm);
    transition: all var(--transicion-rapida);
    margin-top: auto;
}

.servicio-link:hover {
    gap: var(--sp-3);
    color: var(--color-teal-claro);
}

/* === PROCESO === */
.proceso-section {
    background: var(--color-bg);
}

.proceso-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-5);
    counter-reset: proceso;
}

@media (max-width: 1100px) {
    .proceso-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .proceso-grid { grid-template-columns: 1fr; }
}

.proceso-item {
    position: relative;
    padding: var(--sp-6);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-borde-suave);
    border-radius: var(--radio-lg);
    counter-increment: proceso;
    transition: all var(--transicion-media);
}

.proceso-item:hover {
    border-color: var(--color-teal);
    transform: translateY(-4px);
}

.proceso-item::before {
    content: counter(proceso, decimal-leading-zero);
    position: absolute;
    top: var(--sp-4);
    right: var(--sp-5);
    font-size: var(--fs-3xl);
    font-weight: var(--fw-black);
    background: var(--gradiente-yia);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0.7;
    line-height: 1;
}

.proceso-item h3 {
    margin-bottom: var(--sp-3);
    font-size: var(--fs-lg);
    color: var(--color-azul-claro);
}

.proceso-item p {
    font-size: var(--fs-sm);
}

/* === BENEFICIOS === */
.beneficios-section {
    background: var(--color-bg-alt);
}

.beneficios-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-5);
}

@media (max-width: 1024px) {
    .beneficios-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .beneficios-grid { grid-template-columns: 1fr; }
}

.beneficio-card {
    padding: var(--sp-5);
    border-left: 3px solid var(--color-azul);
    background: rgba(9, 124, 145, 0.04);
    border-radius: 0 var(--radio-md) var(--radio-md) 0;
    transition: all var(--transicion-rapida);
}

.beneficio-card:hover {
    border-left-color: var(--color-teal);
    background: rgba(9, 124, 145, 0.05);
    transform: translateX(4px);
}

.beneficio-card h4 {
    margin-bottom: var(--sp-2);
}

.beneficio-card p {
    font-size: var(--fs-sm);
}

/* === CTA FINAL === */
.cta-final {
    background: linear-gradient(135deg, var(--color-negro) 0%, var(--color-negro-elevado) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-final::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 50%, rgba(23, 53, 103, 0.25) 0%, transparent 55%),
        radial-gradient(circle at 70% 50%, rgba(9, 124, 145, 0.18) 0%, transparent 55%);
    pointer-events: none;
}

.cta-final .container {
    position: relative;
    z-index: 1;
}

.cta-final h2 {
    max-width: 800px;
    margin: 0 auto var(--sp-4);
}

.cta-final p {
    max-width: 600px;
    margin: 0 auto var(--sp-6);
    font-size: var(--fs-md);
}

/* === PÁGINA INTERNA === */
.page-header {
    padding-top: calc(var(--altura-header) + var(--sp-8));
    padding-bottom: var(--sp-8);
    text-align: center;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-borde-suave);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at top left, rgba(23, 53, 103, 0.2), transparent 55%),
        radial-gradient(ellipse at top right, rgba(9, 124, 145, 0.15), transparent 55%);
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    margin-bottom: var(--sp-4);
    font-size: var(--fs-4xl);
}

.page-header p {
    max-width: 720px;
    margin: 0 auto;
    font-size: var(--fs-md);
}

/* === CONTENIDO PÁGINA === */
.content-section {
    padding: var(--sp-9) 0;
}

.content-wrapper {
    max-width: 960px;
    margin: 0 auto;
}

.content-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-8);
    align-items: center;
}

.content-block h2 {
    margin-bottom: var(--sp-4);
}

.content-block p {
    margin-bottom: var(--sp-4);
    font-size: var(--fs-base);
}

.feature-list {
    margin: var(--sp-5) 0;
}

.feature-list li {
    padding: var(--sp-3) 0;
    border-bottom: 1px solid var(--color-borde-suave);
    display: flex;
    align-items: flex-start;
    gap: var(--sp-3);
}

.feature-list li::before {
    content: '✓';
    width: 24px;
    height: 24px;
    background: var(--gradiente-yia);
    color: var(--color-blanco);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--fw-bold);
    font-size: var(--fs-sm);
    flex-shrink: 0;
}

/* === FORMULARIO === */
.form-wrapper {
    max-width: 640px;
    margin: 0 auto;
    background: var(--color-bg-elevado);
    border: 1px solid var(--color-borde);
    border-radius: var(--radio-lg);
    padding: var(--sp-7);
}

.form-group {
    margin-bottom: var(--sp-5);
}

.form-group label {
    display: block;
    margin-bottom: var(--sp-2);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--color-blanco);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--sp-3) var(--sp-4);
    background: var(--color-bg);
    border: 1px solid var(--color-borde-suave);
    border-radius: var(--radio-md);
    color: var(--color-blanco);
    font-size: var(--fs-base);
    transition: all var(--transicion-rapida);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-azul);
    box-shadow: 0 0 0 3px rgba(9, 124, 145, 0.15);
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
    font-family: inherit;
}

.form-error {
    color: #ff6b6b;
    font-size: var(--fs-sm);
    margin-top: var(--sp-2);
    display: none;
}

.form-success {
    padding: var(--sp-4);
    background: rgba(9, 124, 145, 0.1);
    border: 1px solid rgba(9, 124, 145, 0.3);
    border-radius: var(--radio-md);
    color: var(--color-teal-claro);
    margin-bottom: var(--sp-5);
    display: none;
}

/* === UTILS === */
.visually-hidden {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================
   ANIMACIONES AL SCROLL (controladas por JS)
   ============================================ */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s ease, transform 0.7s ease;
    will-change: opacity, transform;
}

.animate-on-scroll.is-inview {
    opacity: 1;
    transform: translateY(0);
}

/* En reduce-motion o sin JS, siempre visibles */
@media (prefers-reduced-motion: reduce) {
    .animate-on-scroll {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* Safety: si JavaScript no carga, no dejar las tarjetas invisibles */
.no-js .animate-on-scroll {
    opacity: 1;
    transform: none;
}