/* =============================================================
   ALBA DENTAL — styles.css
   Archetype: 04 Glassmorphism Modern — menta/coral, confianza cercana
   ============================================================= */

:root {
  --bg:        #f2f8f7;
  --bg-2:      #e6f3f0;
  --glass:     rgba(255,255,255,0.55);
  --glass-2:   rgba(255,255,255,0.32);
  --ink:       #12302b;
  --ink-soft:  #3c5f58;
  --ink-mute:  #6f8f88;
  --accent:    #1fae9a;
  --accent-2:  #ff8a65;
  --gold:      #f2b979;
  --line:      rgba(18,48,43,0.10);

  --serif: "Plus Jakarta Sans", "Inter", sans-serif;
  --sans:  "Inter", sans-serif;
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --container: 1180px;
  --radius: 24px;
  --radius-sm: 14px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; overflow-x: clip; scroll-behavior: smooth; }
body {
  font-family: var(--sans); font-size: 16px; line-height: 1.6;
  background: var(--bg); color: var(--ink-soft);
  -webkit-font-smoothing: antialiased; overflow-x: clip; overscroll-behavior-y: none;
}
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.05; letter-spacing: -0.02em; font-family: var(--serif); color: var(--ink); font-weight: 700; }
::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.skip-link { position: fixed; top: -100px; left: 1rem; padding: .6rem 1rem; background: var(--ink); color: #fff; z-index: 9999; border-radius: 8px; font-weight: 600; }
.skip-link:focus { top: 1rem; }
.container { max-width: var(--container); margin-inline: auto; padding-inline: 1.25rem; }
.kicker { display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--accent); margin-bottom: .9rem; }
em { font-style: normal; color: var(--accent); }
.reveal { opacity: 0; transform: translateY(32px); transition: opacity .8s var(--ease-soft), transform .8s var(--ease-soft); }
.reveal.is-revealed { opacity: 1; transform: none; }
.link-btn { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; font-weight: 600; }
.demo-note, .opiniones-demo-note { font-size: .82rem; color: var(--ink-mute); margin-top: 1.5rem; margin-bottom: 2.5rem; }
.opt { font-weight: 400; color: var(--ink-mute); text-transform: none; }

.section-title { font-size: clamp(2rem, 4.2vw, 3rem); max-width: 20ch; }
.section-title-sm { font-size: clamp(1.7rem, 3.2vw, 2.3rem); max-width: 22ch; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; padding: .85rem 1.6rem; border-radius: 999px; font-weight: 700; font-size: .95rem; white-space: nowrap; box-shadow: 0 6px 18px rgba(31,174,154,0.18); transition: transform .4s var(--ease-soft), box-shadow .4s var(--ease-soft); }
.btn:hover { transform: translateY(-3px); box-shadow: 0 20px 36px rgba(31,174,154,0.24); }
.btn-lg { padding: 1rem 2rem; font-size: 1rem; }
.btn-primary { background: linear-gradient(120deg, var(--accent), #14c9b4); color: #fff; }
.btn-ghost { background: rgba(255,255,255,0.5); color: var(--ink); border: 1px solid var(--line); box-shadow: none; }
.btn-ghost:hover { border-color: var(--accent); box-shadow: none; }

.glass-card {
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--radius);
}
@supports (backdrop-filter: blur(18px)) {
  .glass-card { background: var(--glass); backdrop-filter: blur(18px) saturate(160%); -webkit-backdrop-filter: blur(18px) saturate(160%); }
}

.nav { position: sticky; top: 0; z-index: 100; background: rgba(242,248,247,0.7); backdrop-filter: blur(14px) saturate(140%); -webkit-backdrop-filter: blur(14px) saturate(140%); border-bottom: 1px solid transparent; transition: border-color .3s, background-color .3s; }
.nav.is-scrolled { border-bottom-color: var(--line); background: rgba(242,248,247,0.92); }
.nav-inner { display: flex; align-items: center; gap: 1.5rem; padding-block: 1rem; }
.nav-logo { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--serif); font-weight: 800; font-size: 1.1rem; color: var(--ink); margin-right: auto; }
.nav-logo-mark { color: var(--accent); display: inline-flex; }
.nav-links { display: none; gap: 1.75rem; }
.nav-links a { position: relative; padding: .25rem 0; font-size: .92rem; font-weight: 600; color: var(--ink-soft); }
.nav-links a::after { content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 2px; background: var(--accent); transform: scaleX(0); transform-origin: right; transition: transform .4s var(--ease-soft); border-radius: 2px; }
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-cta { display: none; }
.nav-burger { display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; width: 40px; height: 40px; padding: 8px; }
.nav-burger span { display: block; height: 2px; background: var(--ink); border-radius: 2px; }
.nav-mobile { display: grid; gap: .25rem; max-height: 0; overflow: hidden; padding-inline: 1.25rem; transition: max-height .4s var(--ease-soft), padding .4s var(--ease-soft); }
.nav-mobile.is-open { max-height: 420px; padding-block: .5rem 1.25rem; }
.nav-mobile a { padding: .7rem .25rem; border-bottom: 1px solid var(--line); font-weight: 600; }
.nav-mobile .btn { margin-top: .75rem; width: 100%; }
@media (min-width: 960px) { .nav-links { display: flex; } .nav-cta { display: inline-flex; } .nav-burger { display: none; } .nav-mobile { display: none; } }

.section { position: relative; padding-block: clamp(4rem, 8vw, 7rem); }
.section > .container { position: relative; z-index: 1; }

.hero { position: relative; padding-block: clamp(6rem, 11vw, 8.5rem) clamp(4rem, 7vw, 6rem); overflow: clip; }
.hero-mesh {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(at 15% 20%, rgba(31,174,154,0.28) 0%, transparent 55%),
    radial-gradient(at 85% 15%, rgba(255,138,101,0.22) 0%, transparent 55%),
    radial-gradient(at 50% 90%, rgba(242,185,121,0.18) 0%, transparent 55%),
    var(--bg);
  filter: blur(50px) saturate(140%);
  animation: meshDrift 32s ease-in-out infinite alternate;
}
@keyframes meshDrift { 0% { transform: scale(1) rotate(0deg); } 100% { transform: scale(1.15) rotate(6deg); } }
.hero-grid { display: grid; gap: 3rem; align-items: center; }
.hero-title { font-size: clamp(2.4rem, 6vw, 4.2rem); max-width: 13ch; margin-bottom: 1.3rem; }
.hero-sub { font-size: clamp(1.05rem, 1.6vw, 1.2rem); max-width: 46ch; margin-bottom: 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.75rem; }
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; max-width: 520px; }
.hero-stat { display: grid; gap: .3rem; }
.hero-stat-num { font-family: var(--serif); font-weight: 800; font-size: clamp(1.4rem, 3vw, 1.9rem); color: var(--ink); }
.hero-stat-label { font-size: .76rem; color: var(--ink-mute); line-height: 1.35; }

.hero-visual { position: relative; min-height: 340px; }
.hero-glass-card { position: absolute; border-radius: var(--radius); padding: 1.4rem; box-shadow: 0 30px 60px rgba(18,48,43,0.14); }
.hero-glass-main { inset: 8% 12%; overflow: hidden; padding: 0; color: var(--accent); animation: floatY 6s ease-in-out infinite; }
.hero-glass-main img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); }
.hero-glass-badge { display: grid; gap: .1rem; animation: floatY 5s ease-in-out infinite; }
.hero-glass-badge strong { font-family: var(--serif); font-size: 1.3rem; color: var(--accent-2); }
.hero-glass-badge span { font-size: .74rem; color: var(--ink-mute); }
.hero-glass-badge-1 { top: 4%; left: -4%; animation-delay: -1.5s; }
.hero-glass-badge-2 { bottom: 8%; right: -4%; animation-delay: -3s; }
@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@media (min-width: 960px) { .hero-grid { grid-template-columns: 1.1fr 0.9fr; } }

.servicios-grid { display: grid; gap: 1.25rem; margin-top: 3rem; }
.glass-card.reveal { padding: 1.9rem; transition: transform .4s var(--ease-soft), box-shadow .4s var(--ease-soft); }
.servicios-grid .glass-card:hover { transform: translateY(-6px); box-shadow: 0 24px 46px rgba(18,48,43,0.14); }
.servicio-icon { display: inline-flex; align-items: center; justify-content: center; width: 50px; height: 50px; border-radius: 14px; background: linear-gradient(135deg, rgba(31,174,154,0.18), rgba(255,138,101,0.14)); color: var(--accent); margin-bottom: 1.1rem; }
.servicios-grid h3 { font-size: 1.1rem; margin-bottom: .5rem; }
.servicios-grid p { font-size: .9rem; color: var(--ink-mute); }
@media (min-width: 720px) { .servicios-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1280px) { .servicios-grid { grid-template-columns: repeat(4, 1fr); } }

.proceso { background: var(--bg-2); }
.proceso-grid { display: grid; gap: 2.5rem; }
.proceso-text p { max-width: 46ch; margin-top: 1rem; }
.pasos-list { display: grid; gap: 1.1rem; }
.paso { display: flex; gap: 1.1rem; align-items: flex-start; padding: 1.4rem 1.6rem; }
.paso-num { font-family: var(--serif); font-weight: 800; font-size: 1.3rem; color: var(--accent); flex: none; }
.paso h3 { font-size: 1rem; margin-bottom: .35rem; }
.paso p { font-size: .88rem; color: var(--ink-mute); }
@media (min-width: 960px) { .proceso-grid { grid-template-columns: 0.9fr 1.1fr; } }

.asistente-teaser-inner { display: grid; gap: 1.75rem; align-items: center; background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.75rem, 4vw, 2.75rem); }
.asistente-teaser-inner p:last-child { color: var(--ink-mute); max-width: 60ch; }
@media (min-width: 860px) { .asistente-teaser-inner { grid-template-columns: 1fr auto; } }

.estimador-intro { max-width: 60ch; font-size: 1.05rem; margin-top: 1.5rem; margin-bottom: 2.5rem; }
.estimador-card { max-width: 620px; padding: clamp(1.6rem, 4vw, 2.5rem); }
.est-step { display: none; }
.est-step.is-active { display: block; }
.est-question { font-family: var(--serif); font-weight: 700; font-size: 1.2rem; color: var(--ink); margin-bottom: 1.3rem; }
.est-options { display: grid; gap: .7rem; }
.est-opt { text-align: left; padding: .9rem 1.1rem; border-radius: var(--radius-sm); border: 1px solid var(--line); background: rgba(255,255,255,0.5); font-weight: 600; font-size: .92rem; color: var(--ink-soft); transition: border-color .25s, background-color .25s; }
.est-opt:hover { border-color: var(--accent); background: rgba(31,174,154,0.08); color: var(--ink); }
.est-resultado { text-align: center; padding: 1rem 0; display: grid; gap: .6rem; justify-items: center; }
.est-result-kicker { font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--accent); font-weight: 700; }
.est-result-title { font-size: 1.6rem; }
.est-result-price { font-family: var(--serif); font-weight: 800; font-size: 1.9rem; color: var(--accent-2); }
.est-result-text { color: var(--ink-mute); max-width: 42ch; margin-bottom: .6rem; }

.opiniones { background: var(--bg-2); }
.opiniones-grid { display: grid; gap: 1.25rem; }
.opinion-card { position: relative; padding: 1.9rem; }
.opinion-rating { color: var(--gold); letter-spacing: .12em; margin-bottom: 1rem; font-size: .9rem; }
.opinion-autor { display: flex; align-items: center; gap: .75rem; margin-top: 1.4rem; }
.opinion-avatar { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; font-family: var(--serif); font-weight: 700; font-size: .8rem; color: #fff; flex: none; }
.opinion-autor strong { display: block; font-size: .9rem; color: var(--ink); }
.opinion-autor span { font-size: .78rem; color: var(--ink-mute); }
.demo-tag { position: absolute; top: 1.1rem; right: 1.1rem; font-size: .68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-mute); border: 1px solid var(--line); border-radius: 999px; padding: .2rem .6rem; }
@media (min-width: 860px) { .opiniones-grid { grid-template-columns: repeat(3, 1fr); } }

.faq-list { margin-top: 2.5rem; max-width: 800px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.4rem 0; text-align: left; font-family: var(--serif); font-weight: 700; font-size: 1.02rem; color: var(--ink); }
.faq-plus { position: relative; flex: none; width: 22px; height: 22px; }
.faq-plus::before, .faq-plus::after { content: ""; position: absolute; background: var(--accent); transition: transform .35s var(--ease-soft); }
.faq-plus::before { top: 50%; left: 0; width: 100%; height: 2px; transform: translateY(-50%); }
.faq-plus::after { left: 50%; top: 0; width: 2px; height: 100%; transform: translateX(-50%); }
.faq-question[aria-expanded="true"] .faq-plus::after { transform: translateX(-50%) rotate(90deg); opacity: 0; }
.faq-answer { display: grid; grid-template-rows: 0fr; overflow: hidden; transition: grid-template-rows .4s var(--ease-soft); }
.faq-answer p { overflow: hidden; padding-right: 2.5rem; min-height: 0; }
.faq-item.is-open .faq-answer { grid-template-rows: 1fr; }
.faq-item.is-open .faq-answer p { padding-bottom: 1.3rem; }

.contacto-grid { display: grid; gap: 3rem; }
.contacto-list { display: grid; gap: 1rem; margin-top: 2rem; }
.contacto-list li { display: grid; gap: .15rem; }
.contacto-list strong { font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-mute); }
.contacto-list a, .contacto-list span { font-family: var(--serif); font-weight: 700; font-size: 1.1rem; color: var(--ink); }
.contacto-list a:hover { color: var(--accent); }
.contacto-form { padding: clamp(1.5rem, 4vw, 2.25rem); }
.form-row { display: grid; gap: 0; }
@media (min-width: 640px) { .form-row { grid-template-columns: 1fr 1fr; gap: 0 1rem; } }
@media (min-width: 960px) { .contacto-grid { grid-template-columns: 0.9fr 1.1fr; } }

.contacto-form label, .contacto-form textarea { display: grid; gap: .4rem; }
.contacto-form label { font-size: .85rem; font-weight: 700; color: var(--ink-soft); margin-bottom: 1rem; }
.contacto-form input, .contacto-form textarea { padding: .8rem 1rem; background: rgba(255,255,255,0.6); border: 1px solid var(--line); border-radius: var(--radius-sm); color: var(--ink); font-weight: 500; }
.contacto-form input:focus, .contacto-form textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(31,174,154,0.16); outline: none; }
.legal { font-size: .76rem; color: var(--ink-mute); margin-top: .9rem; }

.footer { border-top: 1px solid var(--line); padding-block: 3rem; }
.footer-inner { display: grid; gap: 1.25rem; justify-items: center; text-align: center; }
.footer-tagline { color: var(--ink-mute); font-size: .9rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.25rem; justify-content: center; }
.footer-links a { font-size: .85rem; color: var(--ink-mute); }
.footer-links a:hover { color: var(--accent); }
.footer-copy { font-size: .76rem; color: var(--ink-mute); opacity: .7; margin-top: .5rem; }

.chat-widget { position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 300; }
.chat-fab { position: relative; width: 60px; height: 60px; border-radius: 50%; background: linear-gradient(120deg, var(--accent), #14c9b4); color: #fff; display: grid; place-items: center; box-shadow: 0 16px 32px rgba(31,174,154,0.32); transition: transform .35s var(--ease-soft); }
.chat-fab:hover { transform: scale(1.06); }
.chat-fab-icon-close { display: none; }
.chat-widget.is-open .chat-fab-icon-open { display: none; }
.chat-widget.is-open .chat-fab-icon-close { display: block; }
.chat-panel { position: absolute; right: 0; bottom: calc(100% + 1rem); width: min(370px, calc(100vw - 2.5rem)); max-height: min(560px, calc(100vh - 8rem)); display: grid; grid-template-rows: auto 1fr auto; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 30px 60px rgba(18,48,43,0.22); overflow: hidden; }
.chat-panel[hidden] { display: none; }
.chat-panel-head { display: flex; align-items: center; gap: .75rem; padding: 1.1rem 1.25rem; background: linear-gradient(120deg, rgba(31,174,154,0.14), rgba(255,138,101,0.1)); border-bottom: 1px solid var(--line); }
.chat-avatar { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; background: var(--bg-2); font-size: 1.1rem; flex: none; }
.chat-panel-head strong { display: block; font-family: var(--serif); font-size: .95rem; color: var(--ink); }
.chat-panel-head span { font-size: .74rem; color: var(--ink-mute); }
.chat-messages { padding: 1.1rem 1.25rem; overflow-y: auto; display: grid; gap: .85rem; align-content: start; }
.chat-msg { max-width: 88%; padding: .7rem .95rem; border-radius: 14px; font-size: .88rem; line-height: 1.5; }
.chat-msg-bot { background: var(--bg-2); color: var(--ink-soft); border-bottom-left-radius: 4px; justify-self: start; }
.chat-msg-user { background: var(--accent); color: #fff; border-bottom-right-radius: 4px; justify-self: end; font-weight: 600; }
.chat-msg-error { background: rgba(255,138,101,0.16); color: #b8532f; border-bottom-left-radius: 4px; justify-self: start; }
.chat-typing { display: inline-flex; gap: 4px; padding: .5rem .2rem; }
.chat-typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--ink-mute); animation: chatTyping 1.1s infinite ease-in-out; }
.chat-typing span:nth-child(2) { animation-delay: .15s; } .chat-typing span:nth-child(3) { animation-delay: .3s; }
@keyframes chatTyping { 0%, 60%, 100% { transform: translateY(0); opacity: .4; } 30% { transform: translateY(-4px); opacity: 1; } }
.chat-suggestions { display: grid; gap: .5rem; }
.chat-suggestion { text-align: left; padding: .6rem .85rem; background: var(--bg-2); border: 1px solid var(--line); border-radius: 10px; font-size: .82rem; color: var(--ink-soft); }
.chat-suggestion:hover { border-color: var(--accent); color: var(--ink); }
.chat-form { display: flex; gap: .6rem; padding: 1rem 1.1rem; border-top: 1px solid var(--line); }
.chat-form input { flex: 1; padding: .7rem .9rem; background: var(--bg-2); border: 1px solid var(--line); border-radius: 999px; color: var(--ink); font-size: .85rem; }
.chat-form input:focus { border-color: var(--accent); outline: none; }
.chat-form button { width: 40px; height: 40px; border-radius: 50%; flex: none; background: var(--accent); color: #fff; display: grid; place-items: center; }
@media (max-width: 539px) { .chat-widget { right: .75rem; bottom: .75rem; } .chat-panel { position: fixed; right: .75rem; left: .75rem; bottom: 5.25rem; width: auto; } }

@media (max-width: 539px) { .hero-visual { min-height: 220px; } .hero-glass-badge { display: none; } .hero-stats { grid-template-columns: 1fr; gap: .75rem; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-mesh, .hero-glass-main, .hero-glass-badge { animation: none; }
}