/* ==========================================================================
   UNIQUE — Landing Implantes Convencionales / Cigomáticos
   Sistema tipográfico y de color: manual de marca UNIQUE (Sora + Inter,
   paleta monocromática — sin colores "de marketing").
   ========================================================================== */

:root {
  --font-display: 'Sora', sans-serif;
  --font-body: 'Inter', sans-serif;

  --c-paper: #FFFFFF;
  --c-marble: #F1F1EE;
  --c-white-warm: #F4F6F8;
  --c-silver: #AEB4BC;
  --c-silver-light: #CDD2D8;
  --c-meta: #868C94;
  --c-black: #0B0B0C;
  --c-black-2: #17181B;
  --c-ink: #16171A;

  --line-light: rgba(11,11,12,0.10);
  --line-dark: rgba(244,246,248,0.14);

  --ease-out: cubic-bezier(.19,1,.22,1);
  --container: 1180px;
  --container-narrow: 760px;
}

* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  overflow-x: clip;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--c-paper);
  color: var(--c-ink);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section-narrow { max-width: var(--container-narrow); }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}
h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.6rem);
  max-width: 16ch;
  text-wrap: balance;
}
.h2-sub {
  display: block;
  margin-top: 10px;
  font-weight: 300;
  font-size: 0.6em;
  line-height: 1.3;
  color: var(--c-silver);
}
h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}
p {
  margin: 0 0 16px;
  line-height: 1.6;
  text-align: justify;
  text-align-last: left;
  hyphens: auto;
}
.body-lg {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--c-ink);
  max-width: 58ch;
}

.empathy-video-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 32px;
}
.empathy-video-item {
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 20px 44px rgba(0,0,0,0.4);
  min-width: 0;
}
.empathy-video-item:nth-child(1) { flex: 1.778 0 0; }
.empathy-video-item:nth-child(2) { flex: 0.5625 0 0; }
.empathy-video-item video {
  width: 100%;
  height: auto;
  display: block;
  background: #000;
}

.identify-grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.identify-item {
  margin: 0;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 16px 36px rgba(0,0,0,0.35);
}
.identify-item img,
.identify-item video {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  display: block;
  background: #000;
}
.identify-video-top {
  object-position: center 15%;
}

.accent {
  font-weight: 300;
  color: var(--c-silver);
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  margin-top: 10px;
  padding: 4px 14px;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--c-white-warm);
  font-size: 1em;
  letter-spacing: -0.01em;
  background: rgba(244,246,248,0.08);
  border: 1px solid rgba(174,180,188,0.4);
  border-radius: 6px;
  backdrop-filter: blur(6px) saturate(140%);
  -webkit-backdrop-filter: blur(6px) saturate(140%);
  box-shadow: 0 6px 16px rgba(0,0,0,0.22);
}

.kicker {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-meta);
  margin-bottom: 16px;
}
.kicker--on-dark { color: var(--c-silver-light); }

.tag {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-meta);
  margin-bottom: 12px;
}

/* ============ Reveal on scroll ============ */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .55s var(--ease-out), transform .55s var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: 3px;
  padding: 14px 26px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .25s var(--ease-out), transform .2s var(--ease-out), border-color .25s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--c-black);
  color: var(--c-white-warm);
  box-shadow: 0 2px 10px rgba(11,11,12,0.18);
}
.btn-primary:hover {
  background: var(--c-black-2);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(11,11,12,0.22);
}
.btn-sm { padding: 11px 20px; font-size: 0.72rem; letter-spacing: 0.06em; }
.btn-lg { padding: 17px 32px; font-size: 0.9rem; }
.icon-wa { width: 18px; height: 18px; fill: currentColor; flex-shrink: 0; }

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid var(--line-light);
  box-shadow: 0 1px 0 rgba(11,11,12,0.03);
  transition: box-shadow .35s var(--ease-out);
}
.site-header.is-scrolled {
  box-shadow: 0 14px 34px -18px rgba(11,11,12,0.28);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 22px;
}
.header-logo img {
  height: 46px;
  width: auto;
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.hero:not(.hero--cta) {
  align-items: center;
  min-height: 90svh;
}
.hero--cta { min-height: 88svh; }
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}
.hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,11,12,0.35) 0%, rgba(11,11,12,0.35) 30%, rgba(11,11,12,0.88) 100%);
}
.hero-inner {
  position: relative;
  z-index: 1;
  padding-block: 64px 72px;
  color: var(--c-white-warm);
}
.hero-title {
  font-size: clamp(2.1rem, 5.2vw, 3.6rem);
  max-width: 14ch;
  color: var(--c-white-warm);
}
.cta-title {
  font-size: clamp(1.9rem, 4.4vw, 3rem);
  max-width: 16ch;
  color: var(--c-white-warm);
  margin-bottom: 20px;
}
.hero-sub {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  max-width: 46ch;
  color: var(--c-silver-light);
}
.hero-cta { margin-top: 8px; }
.hero-note {
  margin: 14px 0 0;
  font-size: 0.8rem;
  color: var(--c-meta);
}

/* ============ Sections ============ */
.section {
  padding-block: 88px;
  background: var(--c-paper);
}
.section--tight-top {
  padding-top: 40px;
}
.section--dark {
  background: var(--c-black);
  color: var(--c-white-warm);
}
.section--dark h2, .section--dark h3 { color: var(--c-white-warm); }
.section--dark p { color: var(--c-silver-light); }
.section--marble { background: var(--c-marble); }

/* ============ Method grid ============ */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.method-grid { margin-top: 40px; }
.method-card {
  border: 1px solid var(--line-light);
  border-radius: 4px;
  padding: 32px;
  background: var(--c-paper);
}
.method-card p { margin: 0; color: var(--c-ink); }
.method-note {
  margin-top: 28px;
  font-size: 0.95rem;
  color: var(--c-meta);
  max-width: 60ch;
}

/* ============ Before / After ============ */
.ba-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 36px;
}
.before-after {
  display: flex;
  gap: 12px;
}
.ba-item {
  position: relative;
  margin: 0;
  flex: 1 1 0;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(11,11,12,0.12);
}
.ba-item img {
  width: 100%;
  aspect-ratio: 9/16;
  object-fit: cover;
}
.ba-group--mouth { margin-top: 20px; }
.ba-group--mouth .ba-item img { aspect-ratio: 4/3; }
/* Si el nº de pares es impar, centrar el último debajo */
.ba-group--mouth .before-after:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  width: calc(50% - 10px);
  margin-inline: auto;
}
.ba-tag {
  position: absolute;
  bottom: 6px;
  left: 6px;
  z-index: 2;
  padding: 2px 8px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.56rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(11,11,12,0.68);
  backdrop-filter: blur(2px);
}
.ba-caption {
  margin-top: 24px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
}
.disclaimer {
  font-size: 0.8rem;
  color: var(--c-meta);
  max-width: 60ch;
}

/* ============ Steps ============ */
.steps {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.step-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 2rem;
  color: var(--c-silver);
  margin-bottom: 14px;
}
.step h3 { color: var(--c-white-warm); }
.step p { color: var(--c-silver-light); font-size: 0.95rem; margin: 0; }

/* ============ Authority ============ */
.authority-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: center;
}
.authority-media img {
  border-radius: 6px;
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  object-position: center 30%;
}
.authority-copy h2 { max-width: 12ch; }

.stat {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-top: 12px;
}
.stat-num {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 2.4rem;
  color: var(--c-silver);
  line-height: 1;
}
.stat-label {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-meta);
}

/* ============ Facilities ============ */
.facilities-grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.facility-item { margin: 0; }
.facility-item img {
  border-radius: 6px;
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
}
.facility-item figcaption {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--c-meta);
}

/* ============ FAQ ============ */
.faq-list { margin-top: 32px; }
.faq-item {
  border-bottom: 1px solid var(--line-light);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: none;
  border: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--c-ink);
  text-align: left;
  padding: 22px 0;
  cursor: pointer;
}
.faq-icon {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1.4rem;
  color: var(--c-meta);
  transition: transform .3s var(--ease-out);
  flex-shrink: 0;
}
.faq-item.is-open .faq-icon { transform: rotate(45deg); }
.faq-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .35s var(--ease-out);
}
.faq-a-inner {
  overflow: hidden;
  min-height: 0;
}
.faq-a-inner p {
  color: var(--c-meta);
  margin: 0 0 22px;
  max-width: 62ch;
}
.faq-a-inner p:last-child { margin-bottom: 0; }
.faq-item.is-open .faq-a { grid-template-rows: 1fr; }

/* ============ Testimonial ============ */
.testimonial { text-align: center; }
.quote-mark {
  display: block;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 4rem;
  color: var(--c-silver);
  line-height: 1;
  margin-bottom: 8px;
}
.quote-text {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.3rem, 2.6vw, 1.8rem);
  color: var(--c-white-warm);
  max-width: 40ch;
  margin: 0 auto 20px;
}
.quote-attr {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-meta);
}

.testimonial-video {
  max-width: 320px;
  margin: 0 auto 24px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}
.testimonial-video video {
  width: 100%;
  aspect-ratio: 9/16;
  display: block;
  background: #000;
}

/* ============ Footer ============ */
.site-footer {
  background: var(--c-black);
  color: var(--c-meta);
  padding-block: 40px;
}
.footer-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-logo { height: 36px; width: auto; opacity: 0.9; }
.footer-inner p { margin: 0; font-size: 0.85rem; }

/* ============ Floating WhatsApp button ============ */
.fab-wa {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 60;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--c-black);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(11,11,12,0.35);
  opacity: 0;
  transform: translateY(12px) scale(0.9);
  pointer-events: none;
  transition: opacity .3s var(--ease-out), transform .3s var(--ease-out);
}
.fab-wa.is-visible {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.fab-wa:hover { transform: scale(1.06); }
.fab-wa svg { width: 26px; height: 26px; fill: var(--c-white-warm); }

/* ============ Responsive ============ */
@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .authority-grid { grid-template-columns: 1fr; gap: 32px; }
  .authority-copy h2 { max-width: none; }
  .facilities-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .section { padding-block: 64px; }
  .steps { grid-template-columns: 1fr 1fr; gap: 24px; }
  .facilities-grid { grid-template-columns: 1fr; }
  .header-logo img { height: 38px; }
  .header-inner { padding-block: 16px; }
  .ba-group { grid-template-columns: 1fr; }
  .ba-group--mouth .before-after:last-child:nth-child(odd) { width: auto; grid-column: auto; }
  .identify-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 28px; }
  .fab-wa { width: 48px; height: 48px; }
  .hero:not(.hero--cta) .hero-bg img { object-position: 78% 30%; }
  p { text-align: left; hyphens: none; }
  .empathy-video-row { gap: 8px; }
}