/* ============================================================
   — Dr. Mariano Calero
   Design System: "The Clinical Editorial"
   ============================================================ */

/* --- 1. RESET & BASE --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* --- REVEAL ANIMATIONS --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: transform, opacity;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }


html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  background-color: var(--surface);
  color: var(--on-surface);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

button {
  border: none;
  cursor: pointer;
  font-family: inherit;
  background: none;
}

ul, ol {
  list-style: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  outline: none;
  border: none;
}

/* --- 2. DESIGN TOKENS (Custom Properties) --- */
:root {
  /* Colors — from Brand Identity */
  --primary: #002c54;
  --primary-light: #0a3d6e;
  --primary-container: #00427a;
  --on-primary: #ffffff;
  --on-primary-container: #83b0ee;

  --secondary: #006973;
  --secondary-light: #008a97;
  --secondary-container: #82f0ff;
  --on-secondary: #ffffff;
  --on-secondary-container: #006d78;
  --secondary-fixed: #91f1ff;
  --on-secondary-fixed: #001f23;

  --tertiary: #4b1e00;
  --tertiary-container: #6d2f02;

  --surface: #f9f9fe;
  --surface-dim: #d9dadf;
  --surface-container-low: #f3f3f9;
  --surface-container: #ededf3;
  --surface-container-high: #e7e8ed;
  --surface-container-highest: #e2e2e7;
  --surface-container-lowest: #ffffff;

  --on-surface: #1a1c20;
  --on-surface-variant: #424750;

  --outline: #737781;
  --outline-variant: #c2c6d1;

  --error: #ba1a1a;
  --success: #006d3b;
  --whatsapp: #25D366;

  /* Typography */
  --font-headline: 'Manrope', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  /* Spacing */
  --section-py: clamp(5rem, 10vw, 8rem);
  --container-px: clamp(1.25rem, 4vw, 2rem);
  --container-max: 1400px;

  /* Shadows — Ambient Light (from DESIGN.md) */
  --shadow-ambient: 0 12px 40px 0 rgba(26, 28, 32, 0.04);
  --shadow-elevated: 0 20px 60px -10px rgba(0, 44, 84, 0.08);
  --shadow-card-hover: 0 24px 48px -8px rgba(0, 44, 84, 0.12);

  /* Radii */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-premium: all 0.7s cubic-bezier(0.32, 0.72, 0, 1);
  --transition-fast: all 0.4s cubic-bezier(0.32, 0.72, 0, 1);
  --transition-snappy: all 0.25s cubic-bezier(0.32, 0.72, 0, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- 3. TYPOGRAPHY --- */
.headline-xl {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--primary);
}

.headline-lg {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--primary);
}

.headline-md {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--primary);
}

.body-lg {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--on-surface-variant);
}

.body-md {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--on-surface-variant);
}

.label-sm {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--secondary);
}

/* --- 4. LAYOUT UTILITIES --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-px);
  padding-right: var(--container-px);
}

.section {
  padding-top: var(--section-py);
  padding-bottom: var(--section-py);
}

/* --- 5. BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 0.9375rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-xl);
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0);
  transition: var(--transition-fast);
}

.btn:hover::before {
  background: rgba(255, 255, 255, 0.08);
}

.btn:active {
  transform: scale(0.97) translateY(1px);
}

.btn--primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
  color: var(--on-primary);
  box-shadow: 0 4px 20px rgba(0, 44, 84, 0.25);
}

.btn--primary:hover {
  box-shadow: 0 8px 30px rgba(0, 44, 84, 0.35);
  transform: translateY(-2px);
}

.btn--secondary {
  background: var(--secondary);
  color: var(--on-secondary);
  box-shadow: 0 4px 20px rgba(0, 105, 115, 0.2);
}

.btn--secondary:hover {
  box-shadow: 0 8px 30px rgba(0, 105, 115, 0.3);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--outline-variant);
}

.btn--outline:hover {
  border-color: var(--secondary);
  color: var(--secondary);
  background: rgba(0, 105, 115, 0.04);
}

.btn--ghost {
  background: transparent;
  color: var(--secondary);
  padding: 0.5rem 0;
}

.btn--ghost:hover {
  color: var(--primary);
}

.btn__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.15);
  transition: var(--transition-fast);
}

.btn:hover .btn__icon {
  transform: translateX(3px);
}

/* --- 6. EYEBROW TAG --- */
.eyebrow {
  display: inline-block;
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full);
  background: var(--secondary-container);
  color: var(--on-secondary-container);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* --- 7. NAVIGATION --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: var(--transition-premium);
}

.nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-px);
  height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav--scrolled {
  background: rgba(249, 249, 254, 0.82);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(194, 198, 209, 0.25);
}

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

.nav__logo-img {
  height: 3.5rem;
  width: auto;
  object-fit: cover;
}

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

.nav__logo-brand {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: 1.375rem;
  color: var(--primary);
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.nav__logo-sub {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.625rem;
  color: var(--secondary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  line-height: 1;
}

.nav__divider {
  width: 1px;
  height: 1.5rem;
  background: var(--outline-variant);
  opacity: 0.4;
}

.nav__links {
  display: none;
  align-items: center;
  gap: 2.25rem;
}

.nav__links a {
  font-family: var(--font-headline);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--on-surface-variant);
  letter-spacing: -0.01em;
  position: relative;
  padding: 0.25rem 0;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--secondary);
  border-radius: var(--radius-full);
  transition: var(--transition-fast);
}

.nav__links a:hover {
  color: var(--secondary);
}

.nav__links a:hover::after {
  width: 100%;
}

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

.nav__whatsapp-link {
  display: none;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 0.8125rem;
  color: white;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-full);
  background: #25D366;
  border: 1.5px solid #25D366;
  white-space: nowrap;
  transition: var(--transition-fast);
  animation: pulse-whatsapp 2s infinite;
}

.nav__whatsapp-link svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: white;
}

.nav__whatsapp-link:hover {
  background: #25D366;
  color: white;
  border-color: #25D366;
  box-shadow: 0 0 20px rgba(37, 211, 102, 0.45);
  animation-play-state: paused;
}

@keyframes pulse-whatsapp {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

.nav__cta {
  display: none;
}

/* Hamburger */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.nav__hamburger:hover {
  background: var(--surface-container-high);
}

.nav__hamburger span {
  display: block;
  height: 2px;
  background: var(--primary);
  border-radius: var(--radius-full);
  transition: var(--transition-fast);
  transform-origin: center;
}

.nav__hamburger span:nth-child(1) { width: 100%; }
.nav__hamburger span:nth-child(2) { width: 70%; }
.nav__hamburger span:nth-child(3) { width: 85%; }

.nav__hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.nav__hamburger.active span:nth-child(3) {
  width: 100%;
  transform: translateY(-7px) rotate(-45deg);
}

/* --- 8. MOBILE MENU --- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(249, 249, 254, 0.95);
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-premium);
}

.mobile-menu.active {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu__link {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: 2rem;
  color: var(--primary);
  letter-spacing: -0.02em;
  transform: translateY(1.5rem);
  opacity: 0;
  transition: var(--transition-premium);
}

.mobile-menu.active .mobile-menu__link {
  transform: translateY(0);
  opacity: 1;
}

.mobile-menu.active .mobile-menu__link:nth-child(1) { transition-delay: 0.05s; }
.mobile-menu.active .mobile-menu__link:nth-child(2) { transition-delay: 0.1s; }
.mobile-menu.active .mobile-menu__link:nth-child(3) { transition-delay: 0.15s; }
.mobile-menu.active .mobile-menu__link:nth-child(4) { transition-delay: 0.2s; }
.mobile-menu.active .mobile-menu__link:nth-child(5) { transition-delay: 0.25s; }
.mobile-menu.active .mobile-menu__link:nth-child(6) { transition-delay: 0.3s; }

.mobile-menu__link:hover {
  color: var(--secondary);
}

.mobile-menu__cta {
  margin-top: 1rem;
  transform: translateY(1.5rem);
  opacity: 0;
  transition: var(--transition-premium);
  transition-delay: 0.35s;
}

.mobile-menu.active .mobile-menu__cta {
  transform: translateY(0);
  opacity: 1;
}

/* --- 9. HERO --- */
.hero {
  position: relative;
  min-height: auto;
  display: block;
  padding-top: 6rem;
  padding-bottom: 3rem;
  overflow: hidden;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: start;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero__eyebrow {
  margin-bottom: 1rem;
}

.hero__title {
  margin-bottom: 1rem;
}

.hero__title-accent {
  background: linear-gradient(135deg, var(--primary) 30%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  margin: 0 auto 2rem;
  max-width: 520px;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hero__actions .btn {
  width: 100%;
}

@media (min-width: 768px) {
  .hero__content {
    text-align: left;
  }
  .hero__subtitle {
    margin: 0 0 2rem 0;
  }
  .hero__actions {
    flex-direction: row;
  }
  .hero__actions .btn {
    width: auto;
  }
}

.hero__visual {
  position: relative;
  z-index: 1;
}

.hero__image-wrapper {
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-elevated);
  aspect-ratio: 3 / 4; width: 100%;
  max-height: 550px;
}

.hero__image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: var(--transition-premium);
}

.hero__image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  background: linear-gradient(to top, rgba(0, 44, 84, 0.85) 0%, transparent 100%);
}

.hero__doctor-name {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--on-primary);
  letter-spacing: -0.02em;
}

.hero__doctor-role {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 0.25rem;
}

/* Decorative blobs */
.hero__blob-1 {
  position: absolute;
  top: -10%;
  right: -8%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 105, 115, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
}

.hero__blob-2 {
  position: absolute;
  bottom: -15%;
  left: -10%;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(0, 44, 84, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(50px);
  pointer-events: none;
}

/* --- 10. TREATMENTS --- */
.treatments {
  background: var(--surface-container-low);
  padding-top: 0;
}

.treatments__header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.treatments__header .headline-lg {
  margin-bottom: 1rem;
}

.treatments__accent-line {
  width: 3rem;
  height: 3px;
  background: linear-gradient(to right, var(--secondary), var(--primary));
  border-radius: var(--radius-full);
  margin: 0 auto;
}

.treatments__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.treatment-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-ambient);
  transition: var(--transition-premium);
  position: relative;
  overflow: hidden;
}

.treatment-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(to right, var(--secondary), var(--primary));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-premium);
}

.treatment-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

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

.treatment-card__icon {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius-lg);
  background: var(--secondary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.treatment-card__icon svg {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--on-secondary-container);
}

.treatment-card__title {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--primary);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.treatment-card__text {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--on-surface-variant);
  margin-bottom: 1.25rem;
}

.treatment-card__chip {
  display: inline-block;
  padding: 0.3rem 0.875rem;
  border-radius: var(--radius-full);
  background: var(--secondary-fixed);
  color: var(--on-secondary-fixed);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Treatment Image Feature */
.treatments__feature {
  margin-top: 4rem;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  position: relative;
  max-height: 550px;
}

.treatments__feature img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.treatments__feature-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 44, 84, 0.7) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 2.5rem;
}

.treatments__feature-text {
  color: var(--on-primary);
}

.treatments__feature-text h3 {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.treatments__feature-text p {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 480px;
}

/* --- 11. ABOUT DR. CALERO --- */
.about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.about__content {
  order: 2;
}

.about__content .headline-lg {
  margin-bottom: 1.5rem;
}

.about__text {
  margin-bottom: 2rem;
}

.about__text p {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--on-surface-variant);
  margin-bottom: 1rem;
}

.about__text strong {
  color: var(--primary);
  font-weight: 600;
}

.about__stats {
  display: flex;
  gap: 3rem;
  padding: 1.75rem 0;
  border-top: 1px solid rgba(194, 198, 209, 0.25);
  border-bottom: 1px solid rgba(194, 198, 209, 0.25);
}

.about__stat-value {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: 2.25rem;
  color: var(--primary);
  letter-spacing: -0.03em;
  line-height: 1;
}

.about__stat-label {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.6875rem;
  color: var(--secondary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 0.375rem;
}

.about__visual {
  order: 1;
}

.about__image-shell {
  padding: 0.5rem;
  background: var(--surface-container-high);
  border-radius: var(--radius-2xl);
}

.about__image-shell img {
  width: 100%;
  border-radius: calc(var(--radius-2xl) - 0.375rem);
  object-fit: cover;
}

/* --- 12. PROCESS --- */
.process {
  background: var(--surface-container-low);
}

.process__header {
  text-align: center;
  margin-bottom: 4rem;
}

.process__header .headline-lg {
  margin-bottom: 0.75rem;
}

.process__header p {
  max-width: 560px;
  margin: 0 auto;
  color: var(--on-surface-variant);
}

.process__timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.process__line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 1.5rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--secondary), var(--primary));
  border-radius: var(--radius-full);
}

.process__step {
  position: relative;
  padding-left: 4.5rem;
  padding-bottom: 3rem;
}

.process__step:last-child {
  padding-bottom: 0;
}

.process__step-number {
  position: absolute;
  left: 0;
  top: 0;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: 0.875rem;
  z-index: 2;
  box-shadow: 0 4px 12px rgba(0, 44, 84, 0.2);
}

.process__step-title {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--primary);
  margin-bottom: 0.375rem;
}

.process__step-text {
  font-size: 0.9375rem;
  color: var(--on-surface-variant);
  line-height: 1.6;
}

/* --- 13. RESULTS --- */
.results {
  background: var(--primary);
  color: var(--on-primary);
  overflow: hidden;
}

.results__header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 3rem;
}

.results__header .headline-lg {
  color: var(--on-primary);
}

.results__header p {
  color: rgba(255, 255, 255, 0.65);
  max-width: 520px;
}

.results__carousel {
  position: relative;
  width: 100%;
}

.results__carousel-track {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none; /* Firefox */
  padding-bottom: 1rem;
}

.results__carousel-track::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

.result-card {
  flex: 0 0 100%;
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

.result-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--primary-container);
}

.result-card__comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.result-card__img {
  aspect-ratio: 3 / 4; width: 100%;
  overflow: hidden;
}

.result-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  image-rendering: high-quality;
  transform: translateZ(0);
  transition: var(--transition-premium);
}


.result-card__img--after {
  border-left: 2px solid rgba(0, 105, 115, 0.4);
}

.result-card__labels {
  position: absolute;
  bottom: 0.75rem;
  left: 0.75rem;
  right: 0.75rem;
  display: flex;
  justify-content: space-between;
}

.result-card__label {
  font-size: 0.5625rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
  color: var(--on-primary);
}

.result-card__label--before {
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
}

.result-card__label--after {
  background: var(--secondary);
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--on-surface);
  cursor: pointer;
  z-index: 10;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
  transition: var(--transition-premium);
  opacity: 1; /* Make visible on mobile */
  pointer-events: auto;
}

.carousel-btn svg {
  width: 20px;
  height: 20px;
}

@media (min-width: 1024px) {
  .carousel-btn {
    width: 48px;
    height: 48px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  }
  .carousel-btn svg {
    width: 24px;
    height: 24px;
  }
}

.carousel-btn:hover {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
}

.carousel-btn--prev {
  left: -20px; /* Outward on mobile (fits in container padding) */
}

.carousel-btn--next {
  right: -20px; /* Outward on mobile */
}

@media (min-width: 1024px) {
  .carousel-btn--prev {
    left: -24px; /* Outward on desktop */
  }
  .carousel-btn--next {
    right: -24px; /* Outward on desktop */
  }
  
  .carousel-dots {
    display: none; /* Hide on desktop, rely on arrows */
  }
}

.carousel-dots {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 1.5rem;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--on-surface);
  opacity: 0.2;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  padding: 0;
}

.carousel-dot.active {
  opacity: 1;
  width: 24px;
  border-radius: 4px;
  background-color: var(--primary);
}

/* --- 14. BENEFITS --- */
.benefits__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.benefit {
  text-align: center;
}

.benefit__icon {
  width: 3.5rem;
  height: 3.5rem;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
}

.benefit__icon svg {
  width: 2rem;
  height: 2rem;
}

.benefit__title {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.benefit__text {
  font-size: 0.875rem;
  color: var(--on-surface-variant);
  line-height: 1.6;
  max-width: 280px;
  margin: 0 auto;
}

/* --- 15. TESTIMONIALS --- */
.testimonials {
  background: var(--surface-container-low);
}

.testimonials__header {
  text-align: center;
  margin-bottom: 4rem;
}

.testimonials__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.testimonial-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-ambient);
  transition: var(--transition-premium);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-elevated);
  transform: translateY(-4px);
}

.testimonial-card__stars {
  display: flex;
  gap: 0.125rem;
  margin-bottom: 1.25rem;
}

.testimonial-card__stars svg {
  width: 1.125rem;
  height: 1.125rem;
  color: var(--secondary);
  fill: var(--secondary);
}

.testimonial-card__quote {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-style: italic;
  color: var(--primary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

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

.testimonial-card__avatar {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--surface-container-high), var(--surface-container));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: 0.875rem;
  color: var(--primary);
}

.testimonial-card__name {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--primary);
}

.testimonial-card__role {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--on-surface-variant);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* --- 16. FAQ --- */
.faq__header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.faq__list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-ambient);
  overflow: hidden;
  transition: var(--transition-fast);
}

.faq-item.active {
  box-shadow: var(--shadow-elevated);
}

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  gap: 1rem;
  transition: var(--transition-fast);
}

.faq-item__question:hover {
  background: rgba(0, 105, 115, 0.03);
}

.faq-item__question h3 {
  font-family: var(--font-headline);
  font-weight: 600;
  font-size: 1rem;
  color: var(--primary);
  letter-spacing: -0.01em;
}

.faq-item__icon {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--radius-full);
  background: var(--surface-container-high);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition-fast);
}

.faq-item.active .faq-item__icon {
  background: var(--secondary);
  transform: rotate(45deg);
}

.faq-item__icon svg {
  width: 0.875rem;
  height: 0.875rem;
  color: var(--on-surface-variant);
  transition: var(--transition-fast);
}

.faq-item.active .faq-item__icon svg {
  color: var(--on-secondary);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.32, 0.72, 0, 1);
}

.faq-item__answer-inner {
  padding: 0 1.5rem 1.5rem;
  font-size: 0.9375rem;
  color: var(--on-surface-variant);
  line-height: 1.7;
}

/* --- 17. CONTACT / CTA --- */
.contact {
  padding-bottom: var(--section-py);
}

.contact__wrapper {
  background: var(--surface-container-high);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
  box-shadow: var(--shadow-ambient);
}

.contact__info {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
  color: var(--on-primary);
  padding: 2.5rem 1.5rem;
}

.contact__info .headline-lg {
  color: var(--on-primary);
  margin-bottom: 1rem;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  white-space: nowrap;
}

.contact__info p {
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 2.5rem;
  font-size: 1rem;
  line-height: 1.65;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact__detail {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  font-size: 0.9375rem;
}

.contact__detail-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact__detail-icon svg {
  width: 1rem;
  height: 1rem;
  color: var(--secondary-container);
}

.contact__form {
  background: var(--surface-container-lowest);
  padding: 3rem 2rem;
}

.contact__form form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact__form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-family: var(--font-headline);
  font-weight: 600;
  font-size: 0.8125rem;
  color: var(--primary);
}

.form-group input,
.form-group textarea {
  background: var(--surface-container-high);
  border-radius: var(--radius-md);
  padding: 0.875rem 1rem;
  font-size: 0.9375rem;
  color: var(--on-surface);
  transition: var(--transition-fast);
  border: 2px solid transparent;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--outline);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: rgba(0, 105, 115, 0.4);
  background: var(--surface-container-lowest);
  box-shadow: 0 0 0 4px rgba(0, 105, 115, 0.08);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact__submit {
  width: 100%;
  padding: 1rem;
  font-size: 1rem;
}

.contact__image-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  aspect-ratio: 2 / 1;
}

.contact__image-wrapper img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 25% center;
}

/* --- 18. FOOTER --- */
.footer {
  background: var(--surface-container-low);
  padding: 4rem 0 2rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer__brand {
  max-width: 280px;
}

.footer__brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.footer__brand-logo img {
  height: 2rem;
  width: auto;
}

.footer__brand-name {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--primary);
  letter-spacing: -0.03em;
}

.footer__brand p {
  font-size: 0.875rem;
  color: var(--on-surface-variant);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.footer__socials {
  display: flex;
  gap: 0.75rem;
}

.footer__social-link {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  background: var(--surface-container);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.footer__social-link:hover {
  background: var(--secondary);
  color: var(--on-secondary);
  transform: translateY(-2px);
}

.footer__social-link svg {
  width: 1.125rem;
  height: 1.125rem;
  color: var(--on-surface-variant);
  transition: var(--transition-fast);
}

.footer__social-link:hover svg {
  color: var(--on-secondary);
}

.footer__column h4 {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.footer__column ul {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.footer__column a {
  font-size: 0.875rem;
  color: var(--on-surface-variant);
}

.footer__column a:hover {
  color: var(--secondary);
}

.footer__bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(194, 198, 209, 0.25);
  text-align: center;
}

.footer__bottom p {
  font-size: 0.75rem;
  color: var(--outline);
}

/* --- 19. FLOATING ACTION BUTTONS --- */
.fab-stack {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.fab-btn {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-full);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.fab-btn:hover {
  transform: scale(1.1);
}

.fab-btn:active {
  transform: scale(0.95);
}

.fab-btn svg {
  width: 1.5rem;
  height: 1.5rem;
}

.fab-whatsapp {
  background: var(--whatsapp);
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.35);
}
.fab-whatsapp:hover {
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.45);
}

.fab-instagram {
  background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
  box-shadow: 0 4px 20px rgba(220, 39, 67, 0.35);
}
.fab-instagram:hover {
  box-shadow: 0 6px 28px rgba(220, 39, 67, 0.45);
}

.fab-facebook {
  background: #1877F2;
  box-shadow: 0 4px 20px rgba(24, 119, 242, 0.35);
}
.fab-facebook:hover {
  box-shadow: 0 6px 28px rgba(24, 119, 242, 0.45);
}

/* --- 20. SCROLL REVEAL ANIMATION --- */
.reveal {
  opacity: 0;
  transform: translateY(2.5rem);
  transition: opacity 0.8s cubic-bezier(0.32, 0.72, 0, 1),
              transform 0.8s cubic-bezier(0.32, 0.72, 0, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* --- 21. RESPONSIVE BREAKPOINTS --- */

/* Tablet (768px+) */
@media (min-width: 768px) {
  .hero__grid {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 4rem;
  }

  .treatments__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }

  .about__grid {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 5rem;
  }

  .treatment-card {
    padding: 2rem;
  }

  .about__content { order: 1; }
  .about__visual { order: 2; }

  .results__carousel-track {
    gap: 2rem;
  }
  
  .result-card {
    flex: 0 0 calc(50% - 1rem); /* Show 2 cards at a time */
  }

  .results__header {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
    gap: 2rem;
  }

  .benefits__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
  }

  .testimonials__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }

  .contact__wrapper {
    grid-template-columns: 0.65fr 1.35fr;
  }

  .contact__image-wrapper {
    aspect-ratio: auto;
    min-height: 350px;
  }

  .contact__info,
  .contact__form {
    padding: 4rem 3rem;
  }

  .contact__form-row {
    grid-template-columns: 1fr 1fr;
  }

  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
  }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
  .nav__inner {
    height: 7rem;
  }
  
  .nav__logo-img {
    height: 6rem;
  }
  
  .fab-stack {
    bottom: 1.5rem;
    right: 1.5rem;
    gap: 0.75rem;
  }
  
  .fab-btn {
    width: 3.5rem;
    height: 3.5rem;
  }
  
  .fab-btn svg {
    width: 1.75rem;
    height: 1.75rem;
  }

  .nav__links {
    display: flex;
  }

  .nav__hamburger {
    display: none;
  }

  .nav__whatsapp-link {
    display: flex;
  }

  .nav__cta {
    display: inline-flex;
  }

  .hero {
    padding-top: 8rem;
    padding-bottom: 0;
    min-height: 100dvh;
    display: flex;
    align-items: center;
  }

  .hero__grid {
    gap: 5rem;
    align-items: center;
  }

  .hero__image-wrapper {
    max-height: 600px;
  }

  .treatment-card {
    padding: 2.5rem;
  }

  .treatments__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .about__grid {
    gap: 6rem;
  }

  .result-card {
    flex: 0 0 calc(50% - 1rem);
  }

  .benefits__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .contact__info,
  .contact__form {
    padding: 5rem 4rem;
  }

  .testimonials__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .testimonial-card {
    padding: 2rem;
  }

  .testimonial-card__quote {
    font-size: 0.9375rem;
  }
}

/* Large Desktop (1280px+) */
@media (min-width: 1280px) {
  .hero__image-wrapper {
    max-height: 650px;
  }
}