/* ===================================
   Dr. Dávila Oculoplastia - Premium CSS
   Diseño médico premium con enfoque humano
   =================================== */

/* === VARIABLES === */
:root {
    /* Colores Principales */
    --color-primary: #1e4d5f;        /* Azul Petróleo */
    --color-secondary: #5a7d7c;      /* Verde Quirófano */
    --color-accent: #b8956a;         /* Dorado Sutil */
    --color-white: #ffffff;
    --color-gray-50: #f7fafc;
    --color-gray-100: #edf2f7;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e0;
    --color-gray-600: #718096;
    --color-gray-700: #4a5568;
    --color-gray-900: #2d3748;
    
    /* Tipografía */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transiciones */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* === RESET & BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-900);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-base);
}

ul {
    list-style: none;
}

/* === UTILIDADES === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.section {
    padding: var(--spacing-3xl) 0;
}

.section--gray {
    background-color: var(--color-gray-50);
}

.section--primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, #2a5f72 100%);
    color: var(--color-white);
}

.center {
    text-align: center;
}

/* === TIPOGRAFÍA === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-700);
}

/* === HEADER === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: all var(--transition-base);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem 0;
}

.nav__logo {
    display: flex;
    flex-direction: column;
}

.logo__text {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    white-space: nowrap;
}

.logo__subtitle {
    font-size: 0.7rem;
    color: var(--color-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.nav__list {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav__link {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--color-gray-700);
    position: relative;
    white-space: nowrap;
}

.nav__link:hover,
.nav__link.active {
    color: var(--color-primary);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: width var(--transition-base);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

.nav__actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.nav__phone {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    white-space: nowrap;
}

.nav__phone svg {
    stroke: var(--color-secondary);
}

.nav__toggle,
.nav__close {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-primary);
}

/* === BUTTONS === */
.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    text-align: center;
}

.btn--primary {
    background-color: var(--color-secondary);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn--primary:hover {
    background-color: #4a6d6c;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn--secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn--white {
    background-color: var(--color-white);
    color: var(--color-primary);
}

.btn--white:hover {
    background-color: var(--color-gray-100);
}

.btn--outline-white {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn--outline-white:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
}

.btn--large {
    padding: 1.125rem 2.25rem;
    font-size: 1.125rem;
}

.btn--block {
    width: 100%;
}

/* === HERO SECTION === */
.hero {
    padding-top: calc(var(--spacing-3xl) + 80px);
    min-height: 90vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.hero__container {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--spacing-2xl);
}

.hero__badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--color-secondary);
    color: var(--color-white);
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.hero__title {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.hero__description {
    font-size: 1.125rem;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xl);
}

.hero__buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.hero__stats {
    display: flex;
    gap: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--color-gray-200);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat__number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-secondary);
    font-family: var(--font-heading);
}

.stat__label {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.hero__image {
    position: relative;
}

.hero__img {
    border-radius: 1rem;
    box-shadow: var(--shadow-xl);
    width: 100%;
    height: auto;
}

.hero__badge-float {
    position: absolute;
    bottom: 2rem;
    right: 2rem;
    background-color: var(--color-white);
    padding: 1rem 1.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.badge-float__icon {
    font-size: 1.5rem;
}

.badge-float__text {
    font-weight: 600;
    color: var(--color-primary);
}

/* === SECTION HEADERS === */
.section__header {
    margin-bottom: var(--spacing-2xl);
}

.section__subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.section__title {
    margin-bottom: var(--spacing-md);
}

.section__description {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    max-width: 800px;
    margin: 0 auto;
}

/* === VALUE PROPOSITION === */
.value__grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.value__card {
    padding: var(--spacing-xl);
    background-color: var(--color-white);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.value__card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.value__icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.value__icon svg {
    stroke: var(--color-white);
}

.value__title {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.value__description {
    color: var(--color-gray-600);
}

/* === SPECIALTY FEATURE === */
.specialty__feature {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    margin-bottom: var(--spacing-3xl);
}

.specialty__feature--reverse {
    direction: rtl;
}

.specialty__feature--reverse > * {
    direction: ltr;
}

.feature__badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background-color: var(--color-secondary);
    color: var(--color-white);
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.feature__badge--secondary {
    background-color: var(--color-primary);
}

.feature__badge--gold {
    background: linear-gradient(135deg, var(--color-accent) 0%, #a07d4f 100%);
}

.feature__title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.feature__description {
    font-size: 1.125rem;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-lg);
}

.feature__list {
    margin-bottom: var(--spacing-lg);
}

.feature__item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.feature__check {
    flex-shrink: 0;
    stroke: var(--color-secondary);
    margin-top: 0.25rem;
}

.feature__buttons {
    display: flex;
    gap: var(--spacing-md);
}

.feature__image {
    position: relative;
}

.feature__img {
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    width: 100%;
    height: auto;
}

/* === LASER CO2 SECTION === */
.laser-co2 {
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.laser__feature {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.laser__benefits {
    margin: var(--spacing-xl) 0;
}

.benefit__item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: 0.75rem;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.benefit__item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.benefit__icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-accent) 0%, #a07d4f 100%);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.benefit__icon svg {
    stroke: var(--color-white);
}

.benefit__title {
    font-size: 1.125rem;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.benefit__text {
    font-size: 0.9375rem;
    color: var(--color-gray-600);
}

.laser__applications {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border-radius: 0.75rem;
    border-left: 4px solid var(--color-accent);
}

.applications__title {
    font-size: 1.125rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.applications__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.applications__item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.laser__image {
    position: relative;
}

.laser__img {
    border-radius: 1rem;
    box-shadow: var(--shadow-xl);
    width: 100%;
    height: auto;
}

.laser__badge-float {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: linear-gradient(135deg, var(--color-accent) 0%, #a07d4f 100%);
    color: var(--color-white);
    padding: 0.75rem 1.25rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

/* === ABOUT BRIEF === */
.about__grid {
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about__img-placeholder {
    width: 100%;
    aspect-ratio: 3/4;
    background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-gray-200) 100%);
    border-radius: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    color: var(--color-gray-600);
}

.about__img-placeholder svg {
    stroke: var(--color-gray-400);
}

.about__text {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--color-gray-700);
}

/* === TECHNOLOGY === */
.technology__grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.tech__card {
    padding: var(--spacing-xl);
    background-color: var(--color-white);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-base);
}

.tech__card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.tech__icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.tech__icon svg {
    stroke: var(--color-white);
}

.tech__title {
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.tech__description {
    color: var(--color-gray-600);
}

/* === TESTIMONIALS === */
.testimonials__grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial__card {
    padding: var(--spacing-xl);
    background-color: var(--color-white);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.testimonial__card:hover {
    box-shadow: var(--shadow-xl);
}

.testimonial__rating {
    color: var(--color-accent);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.testimonial__text {
    font-style: italic;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.testimonial__author {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--color-gray-100);
}

.testimonial__author strong {
    color: var(--color-primary);
}

.testimonial__author span {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

/* === CTA SECTION === */
.cta__content {
    max-width: 800px;
    margin: 0 auto;
}

.cta__title {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta__description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
}

.cta__buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* === CONTACT === */
.contact__grid {
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
}

.contact__info-title {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.contact__item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact__item svg {
    flex-shrink: 0;
    stroke: var(--color-secondary);
}

.contact__item strong {
    display: block;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.contact__item p {
    margin-bottom: 0.25rem;
    color: var(--color-gray-700);
}

.contact__form {
    background-color: var(--color-gray-50);
    padding: var(--spacing-xl);
    border-radius: 1rem;
}

.form__group {
    margin-bottom: var(--spacing-md);
}

.form__group label {
    display: block;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 0.5rem;
}

.form__group input,
.form__group select,
.form__group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--color-gray-200);
    border-radius: 0.5rem;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
}

.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(90, 125, 124, 0.1);
}

/* === FOOTER === */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer__grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__logo {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-md);
}

.footer__description {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

.footer__title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__list a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-base);
}

.footer__list a:hover {
    color: var(--color-white);
}

.footer__list li {
    color: rgba(255, 255, 255, 0.8);
}

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* === RESPONSIVE === */
@media (max-width: 968px) {
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background-color: var(--color-white);
        box-shadow: var(--shadow-xl);
        padding: var(--spacing-2xl);
        transition: right var(--transition-base);
    }
    
    .nav__menu.show {
        right: 0;
    }
    
    .nav__list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .nav__toggle,
    .nav__close {
        display: block;
    }
    
    .nav__close {
        position: absolute;
        top: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .hero__container,
    .specialty__feature,
    .laser__feature,
    .about__grid,
    .contact__grid {
        grid-template-columns: 1fr;
    }
    
    .specialty__feature--reverse {
        direction: ltr;
    }
    
    .hero__buttons,
    .feature__buttons,
    .cta__buttons {
        flex-direction: column;
    }
    
    .hero__stats {
        justify-content: space-between;
    }
}

@media (max-width: 640px) {
    .nav__phone .phone__text {
        display: none;
    }
    
    .hero__stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .value__grid,
    .technology__grid,
    .testimonials__grid {
        grid-template-columns: 1fr;
    }
}

/* === ANIMATIONS === */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

/* === SCROLL ANIMATIONS === */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}
/* ======================================================= */
/* PARCHE SOLUCIÓN: Reparar imágenes y Parallax en móviles */
/* ======================================================= */
@media (max-width: 968px) {
    section, .hero, .section {
        background-attachment: scroll !important;
        background-position: center center !important;
    }
}