/* =============================================================
   Clínica Aura · Odontología — Hoja de estilos
   1. Tokens  2. Reset  3. Base/tipografía  4. Utilidades
   5. Componentes  6. Secciones  7. Animaciones
   8. Responsive (mobile-first)  9. Accesibilidad/reduce-motion
   ============================================================= */

/* ===================== 1. TOKENS ===================== */
:root {
  --c-bg:        #FFFFFF;
  --c-surface:   #F4F8F7;   /* tinte frío muy sutil */
  --c-ink:       #18272A;   /* grafito */
  --c-muted:     #586A6D;   /* AA sobre blanco */
  --c-petrol:    #14635F;   /* azul petróleo (acento, uso sobrio) */
  --c-petrol-d:  #0E4C49;
  --c-petrol-soft: rgba(20, 99, 95, 0.08);
  --c-line:      #E6ECEC;

  --font-display: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --maxw: 1200px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 20px;
  --radius-sm: 12px;
  --section-y: clamp(4.5rem, 10vw, 9rem);

  --shadow-sm: 0 2px 10px rgba(24, 39, 42, 0.05);
  --shadow-md: 0 18px 50px rgba(24, 39, 42, 0.08);
  --shadow-lg: 0 30px 70px rgba(24, 39, 42, 0.12);

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --t-fast: 200ms;
  --t-med: 360ms;
}

/* ===================== 2. RESET ===================== */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
button, input, textarea, select { font: inherit; color: inherit; }
ul[class] { list-style: none; padding: 0; }
a { color: inherit; }

/* ===================== 3. BASE / TIPOGRAFÍA ===================== */
body {
  font-family: var(--font-body);
  color: var(--c-ink);
  background: var(--c-bg);
  line-height: 1.6;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  overflow-wrap: break-word;
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 700; line-height: 1.06; letter-spacing: -0.025em; color: var(--c-ink); }
h1 { font-size: clamp(2.6rem, 6vw, 4.4rem); }
h2 { font-size: clamp(2rem, 4.2vw, 3.1rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.45rem); letter-spacing: -0.015em; }

p { color: var(--c-ink); max-width: 64ch; }
em { font-style: normal; color: var(--c-petrol); }

.eyebrow {
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--c-petrol);
  margin-bottom: 1rem;
}

::selection { background: var(--c-petrol); color: #fff; }

/* ===== GESTO DE MARCA · "Aura arc" =====
   Un arco fino (sonrisa minimalista / halo) que recurre en toda la web:
   precede a cada eyebrow y forma un halo sutil alrededor del hero. */
.eyebrow { display: inline-flex; align-items: center; }
.eyebrow::before {
  content: ""; width: 24px; height: 12px; margin-right: 0.6rem; flex-shrink: 0;
  background: no-repeat center / contain
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 12'%3E%3Cpath d='M2 2 A 11 11 0 0 0 22 2' fill='none' stroke='%2314635F' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
}
.aura-halo { position: absolute; pointer-events: none; border: 1px solid rgba(20, 99, 95, 0.22); border-radius: 50%; z-index: 0; }

/* ===================== 4. UTILIDADES ===================== */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-y); }
.section--soft { background: var(--c-surface); }

.section__head { max-width: 680px; margin-inline: auto; text-align: center; margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }
.section__title { margin-bottom: 0.9rem; }
.section__sub { color: var(--c-muted); font-size: 1.1rem; margin-inline: auto; }

.skip-link { position: absolute; left: -999px; top: 0; z-index: 200; background: var(--c-petrol); color: #fff; padding: 0.75rem 1.25rem; border-radius: 0 0 var(--radius-sm) 0; }
.skip-link:focus { left: 0; }

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--c-petrol); outline-offset: 3px; border-radius: 4px;
}

/* ===================== 5. COMPONENTES ===================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.9rem 1.7rem; border-radius: 999px;
  font-family: var(--font-body); font-weight: 600; font-size: 0.97rem;
  text-decoration: none; cursor: pointer; border: 1.5px solid transparent;
  transition: transform var(--t-fast) var(--ease), background-color var(--t-fast), color var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}
.btn--lg { padding: 1.05rem 2.1rem; font-size: 1rem; }
.btn--petrol { background: var(--c-petrol); color: #fff; box-shadow: var(--shadow-sm); }
.btn--petrol:hover { background: var(--c-petrol-d); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--ghost { background: transparent; color: var(--c-ink); border-color: var(--c-line); }
.btn--ghost:hover { border-color: var(--c-petrol); color: var(--c-petrol); transform: translateY(-2px); }

.brand { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--font-display); font-weight: 800; font-size: 1.3rem; letter-spacing: -0.02em; color: var(--c-ink); text-decoration: none; }
.brand__mark { width: 26px; height: 26px; border-radius: 8px; background: var(--c-petrol); display: inline-grid; place-items: center; color: #fff; font-size: 0.9rem; }

/* Header */
.site-header { position: fixed; inset: 0 0 auto 0; z-index: 100; transition: background-color var(--t-med), box-shadow var(--t-med), backdrop-filter var(--t-med); }
.site-header.is-scrolled { background: rgba(255, 255, 255, 0.82); backdrop-filter: blur(14px); box-shadow: 0 1px 0 var(--c-line); }
.header__inner { display: flex; align-items: center; justify-content: space-between; padding-block: 1.05rem; }

.nav__list { display: flex; align-items: center; gap: 0.3rem; }
.nav__link { text-decoration: none; color: var(--c-ink); font-weight: 500; padding: 0.5rem 0.9rem; border-radius: 999px; transition: color var(--t-fast), background-color var(--t-fast); }
.nav__link:hover { color: var(--c-petrol); background: var(--c-petrol-soft); }
.nav__cta { margin-left: 0.5rem; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 44px; height: 44px; align-items: center; justify-content: center; background: transparent; border: none; cursor: pointer; z-index: 120; }
.nav-toggle__bar { width: 26px; height: 2px; background: var(--c-ink); border-radius: 2px; transition: transform var(--t-med) var(--ease), opacity var(--t-fast); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Formularios */
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; background: var(--c-bg); border: 1px solid var(--c-line); border-radius: var(--radius); padding: clamp(1.5rem, 4vw, 2.5rem); box-shadow: var(--shadow-md); }
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 0.9rem; font-weight: 600; }
.field input, .field textarea, .field select {
  padding: 0.85rem 1rem; border: 1.5px solid var(--c-line); border-radius: var(--radius-sm);
  background: var(--c-surface); color: #14201f;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.field input::placeholder, .field textarea::placeholder { color: #5a696d; opacity: 1; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--c-petrol); box-shadow: 0 0 0 4px var(--c-petrol-soft); }
.field--check { flex-direction: row; align-items: flex-start; gap: 0.6rem; font-size: 0.88rem; color: var(--c-muted); }
.field--check input { width: 18px; height: 18px; accent-color: var(--c-petrol); margin-top: 0.15rem; }
.field--check a { color: var(--c-petrol); }
.hp-field { display: none !important; }
.form-feedback { grid-column: 1 / -1; margin: 0; font-weight: 600; font-size: 0.92rem; color: var(--c-petrol); }
.form-feedback.is-success { color: #1f8f4e; }
.form-feedback.is-error { color: #c0392b; }
.btn[disabled] { opacity: 0.7; cursor: progress; transform: none; }

/* ===================== 6. SECCIONES ===================== */
/* Hero */
.hero { padding-top: clamp(7.5rem, 16vh, 11rem); padding-bottom: var(--section-y); }
.hero__inner { display: grid; gap: clamp(2.5rem, 5vw, 4rem); align-items: center; }
.hero__title { margin-bottom: 1.4rem; }
.hero__lead { font-size: 1.2rem; color: var(--c-muted); max-width: 42ch; margin-bottom: 2.2rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-bottom: 2.4rem; }
.hero__trust { display: grid; gap: 0.9rem; }
.hero__trust-row { display: flex; flex-wrap: wrap; gap: 1.5rem 2rem; align-items: center; }
.trust-item { display: flex; flex-direction: column; }
.trust-item__num { font-family: var(--font-display); font-weight: 800; font-size: 1.5rem; color: var(--c-ink); line-height: 1; }
.trust-item__label { font-size: 0.82rem; color: var(--c-muted); margin-top: 0.25rem; }
.hero__media { position: relative; }
.hero__media .aura-halo { width: 118%; aspect-ratio: 1; right: -16%; top: -13%; }
.hero__media .aura-halo--inner { width: 86%; right: -4%; top: 6%; border-color: rgba(20, 99, 95, 0.12); }
.hero__img { position: relative; z-index: 1; width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-lg); object-fit: cover; aspect-ratio: 5 / 4; }

/* Tratamientos */
.treat__grid { display: grid; grid-template-columns: 1fr; gap: 1.4rem; }
.treat { background: var(--c-bg); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 2rem 1.8rem; transition: transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease), border-color var(--t-med); display: flex; flex-direction: column; height: 100%; }
.treat:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.treat__icon { width: 54px; height: 54px; border-radius: 50%; background: var(--c-petrol-soft); color: var(--c-petrol); display: grid; place-items: center; margin-bottom: 1.3rem; }
.treat__icon svg { width: 26px; height: 26px; }
.treat__title { margin-bottom: 0.5rem; }
.treat__text { color: var(--c-muted); margin-bottom: 1.3rem; flex-grow: 1; }
.treat__link { color: var(--c-petrol); font-weight: 600; text-decoration: none; font-size: 0.95rem; }
.treat__link:hover { text-decoration: underline; }

/* Método */
.method__steps { display: grid; grid-template-columns: 1fr; gap: 1.5rem; counter-reset: step; }
.method__step { position: relative; padding-left: 4rem; }
.method__num { position: absolute; left: 0; top: 0; width: 2.8rem; height: 2.8rem; border-radius: 50%; border: 1.5px solid var(--c-line); display: grid; place-items: center; font-family: var(--font-display); font-weight: 800; color: var(--c-petrol); }
.method__title { margin-bottom: 0.4rem; }
.method__text { color: var(--c-muted); }

/* Resultados */
.metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--c-line); border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden; }
.metric { background: var(--c-bg); text-align: center; padding: 2rem 1rem; }
.metric__num { display: block; font-family: var(--font-display); font-weight: 800; font-size: clamp(2rem, 5vw, 2.9rem); color: var(--c-petrol); line-height: 1; }
.metric__label { font-size: 0.85rem; color: var(--c-muted); margin-top: 0.5rem; display: block; }
.testi__grid { display: grid; grid-template-columns: 1fr; gap: 1.4rem; margin-top: clamp(2rem, 4vw, 3rem); }
.testi { background: var(--c-bg); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 1.9rem 1.7rem; }
.testi__stars { color: var(--c-petrol); margin-bottom: 0.8rem; letter-spacing: 0.1em; }
.testi__text { font-size: 1.05rem; margin-bottom: 1.1rem; }
.testi__author { font-size: 0.88rem; color: var(--c-muted); font-weight: 500; }
.results__disclaimer { text-align: center; font-size: 0.85rem; color: var(--c-muted); margin: 1.5rem auto 0; max-width: none; }

/* Equipo */
.team__grid { display: grid; grid-template-columns: 1fr; gap: 1.6rem; }
.member__media { aspect-ratio: 5 / 6; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--c-line); background: var(--c-surface); }
.member__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 600ms var(--ease); }
.member:hover .member__media img { transform: scale(1.04); }
.member__name { margin: 1rem 0 0.2rem; }
.member__role { color: var(--c-petrol); font-weight: 600; font-size: 0.92rem; }
.member__creds { color: var(--c-muted); font-size: 0.88rem; margin-top: 0.35rem; }

/* Instalaciones */
.gallery { display: grid; grid-template-columns: 1fr; gap: 1.2rem; }
.gallery__item { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--c-line); aspect-ratio: 4 / 3; }
.gallery__item img { width: 100%; height: 100%; object-fit: cover; transition: transform 600ms var(--ease); }
.gallery__item:hover img { transform: scale(1.05); }
.gallery__item--wide { grid-column: 1 / -1; aspect-ratio: 16 / 9; }

/* FAQ */
.faq__inner { max-width: 820px; margin-inline: auto; }
.accordion__item { border-bottom: 1px solid var(--c-line); }
.accordion__trigger { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem; text-align: left; background: transparent; border: none; padding: 1.4rem 0; cursor: pointer; font-weight: 600; font-size: 1.08rem; color: var(--c-ink); }
.accordion__icon { position: relative; width: 18px; height: 18px; flex-shrink: 0; }
.accordion__icon::before, .accordion__icon::after { content: ""; position: absolute; background: var(--c-petrol); border-radius: 2px; transition: transform var(--t-med) var(--ease); }
.accordion__icon::before { top: 8px; left: 0; width: 18px; height: 2px; }
.accordion__icon::after { top: 0; left: 8px; width: 2px; height: 18px; }
.accordion__trigger[aria-expanded="true"] .accordion__icon::after { transform: scaleY(0); }
.accordion__panel { padding: 0 0 0; color: var(--c-muted); max-height: 0; opacity: 0; overflow: hidden; transition: max-height var(--t-med) var(--ease), opacity var(--t-med) var(--ease), padding var(--t-med) var(--ease); }
.accordion__panel.is-open { opacity: 1; padding: 0 0 1.4rem; }

/* Reserva */
.reserve { background: var(--c-surface); }
.reserve__inner { display: grid; gap: clamp(2rem, 5vw, 3rem); align-items: start; }
.reserve__intro .section__title { text-align: left; }
.reserve__list { display: grid; gap: 0.7rem; margin-top: 1.5rem; }
.reserve__list li { position: relative; padding-left: 1.7rem; color: var(--c-ink); }
.reserve__list li::before { content: "✓"; position: absolute; left: 0; color: var(--c-petrol); font-weight: 700; }

/* Footer */
.site-footer { background: var(--c-ink); color: rgba(255, 255, 255, 0.78); padding-top: clamp(3rem, 6vw, 4.5rem); }
.footer__grid { display: grid; grid-template-columns: 1fr; gap: 2.25rem; padding-bottom: 2.5rem; }
.site-footer .brand { color: #fff; }
.footer__tagline { margin: 0.9rem 0; color: rgba(255, 255, 255, 0.7); max-width: 34ch; }
.footer__title { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: rgba(255, 255, 255, 0.6); margin-bottom: 1rem; font-weight: 600; }
.footer__list { display: grid; gap: 0.55rem; }
.footer__list a { color: rgba(255, 255, 255, 0.78); text-decoration: none; transition: color var(--t-fast); }
.footer__list a:hover { color: #fff; }
.footer__list li { color: rgba(255, 255, 255, 0.78); }
.footer__bottom { display: flex; flex-direction: column; gap: 0.75rem; padding-block: 1.5rem; border-top: 1px solid rgba(255, 255, 255, 0.14); font-size: 0.85rem; color: rgba(255, 255, 255, 0.55); }
.footer__legal { display: flex; flex-wrap: wrap; gap: 1.2rem; }
.footer__legal a { color: rgba(255, 255, 255, 0.55); text-decoration: none; }
.footer__legal a:hover { color: #fff; }

/* Página tratamientos */
.subpage { padding-top: clamp(7rem, 14vh, 9.5rem); }
.treat-detail { display: grid; grid-template-columns: 1fr; gap: 1.5rem; border: 1px solid var(--c-line); border-radius: var(--radius); padding: clamp(1.5rem, 4vw, 2.5rem); margin-bottom: 1.5rem; background: var(--c-bg); }
.treat-detail__price { font-family: var(--font-display); font-weight: 800; color: var(--c-petrol); font-size: 1.3rem; }
.treat-detail__price span { font-family: var(--font-body); font-weight: 400; font-size: 0.85rem; color: var(--c-muted); display: block; }
.treat-detail__list { display: grid; gap: 0.5rem; margin-top: 1rem; }
.treat-detail__list li { position: relative; padding-left: 1.5rem; color: var(--c-muted); }
.treat-detail__list li::before { content: "—"; position: absolute; left: 0; color: var(--c-petrol); }

/* Badge demo + back-to-top */
.demo-banner { position: fixed; left: 1.25rem; bottom: 1.25rem; z-index: 80; font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; font-weight: 600; color: var(--c-petrol); background: rgba(255, 255, 255, 0.9); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); border: 1px solid var(--c-line); border-left: 3px solid var(--c-petrol); padding: 0.45rem 0.85rem; border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); }
.to-top { position: fixed; right: 1.1rem; bottom: 1.1rem; z-index: 85; width: 46px; height: 46px; border-radius: 50%; border: none; cursor: pointer; background: var(--c-petrol); color: #fff; box-shadow: var(--shadow-md); display: grid; place-items: center; opacity: 0; visibility: hidden; transform: translateY(8px); transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease), visibility var(--t-med) var(--ease); }
.to-top svg { width: 20px; height: 20px; }
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }

/* CTA sticky móvil */
.mobile-cta { display: none; }

/* ===================== 7. ANIMACIONES ===================== */
/* Fase 1 · personalidad de movimiento: PRECISIÓN SERENA (recorrido corto y limpio) */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
/* Nivel 1 · microinteracción de pulsado */
.btn:active { transform: translateY(0) scale(0.99); }

/* ===================== 8. RESPONSIVE (mobile-first) ===================== */
@media (min-width: 640px) {
  .treat__grid { grid-template-columns: repeat(2, 1fr); }
  .metrics { grid-template-columns: repeat(4, 1fr); }
  .testi__grid { grid-template-columns: repeat(3, 1fr); }
  .team__grid { grid-template-columns: repeat(3, 1fr); }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
  .footer__bottom { flex-direction: row; align-items: center; justify-content: space-between; }
}
@media (min-width: 960px) {
  .hero__inner { grid-template-columns: 1.05fr 0.95fr; }
  .treat__grid { grid-template-columns: repeat(4, 1fr); }
  .method__steps { grid-template-columns: repeat(4, 1fr); }
  .method__step { padding-left: 0; padding-top: 4rem; }
  .gallery { grid-template-columns: repeat(3, 1fr); }
  .reserve__inner { grid-template-columns: 0.9fr 1.1fr; }
  .footer__grid { grid-template-columns: 1.6fr 1fr 1fr 1.2fr; }
}

/* Navegación móvil anclada bajo el header (altura real via --header-h) */
@media (max-width: 959px) {
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    top: var(--header-h, 64px);
    left: 0; right: 0; bottom: 0;
    background: var(--c-bg);
    display: flex; flex-direction: column; justify-content: flex-start;
    padding: clamp(1.25rem, 5vw, 2.25rem) var(--gutter) calc(1.5rem + env(safe-area-inset-bottom, 0px));
    overflow-y: auto; overscroll-behavior: contain;
    opacity: 0; visibility: hidden; transform: translateY(-10px);
    transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease), visibility var(--t-med) var(--ease);
    z-index: 110;
  }
  .nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav__list { flex-direction: column; gap: 1.1rem; text-align: center; }
  .nav__link { font-family: var(--font-display); font-size: 1.7rem; }
  .nav__cta { margin-left: 0; margin-top: 0.5rem; }
  body.nav-open { overflow: hidden; }
}

@media (max-width: 520px) {
  .form { grid-template-columns: 1fr; }
}

/* CTA sticky móvil visible solo en pantallas pequeñas */
@media (max-width: 720px) {
  .mobile-cta {
    display: flex; align-items: center; justify-content: center;
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
    padding: 0.95rem 1rem calc(0.95rem + env(safe-area-inset-bottom, 0px));
    background: var(--c-petrol); color: #fff; font-weight: 700; text-decoration: none;
    box-shadow: 0 -6px 24px rgba(24, 39, 42, 0.14);
  }
  .demo-banner { bottom: 4.6rem; }
  .to-top { bottom: 4.7rem; }
  body { padding-bottom: 4rem; }
}

/* ===================== 9. ACCESIBILIDAD / REDUCE-MOTION ===================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
}