/* ==========================================================================
   Clínica Sorriso Feliz — Dental Clinic Template
   Design tokens
   ========================================================================== */
:root {
  --color-primary: #2563EB;
  --color-primary-dark: #1E3A8A;
  --color-white: #FFFFFF;
  --color-bg-light: #F3F4F6;
  --color-text-secondary: #6B7280;
  --color-heading: #111827;
  --color-border: #E5E7EB;

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Poppins', 'Inter', -apple-system, sans-serif;

  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 3px rgba(17, 24, 39, 0.08), 0 1px 2px rgba(17, 24, 39, 0.04);
  --shadow-md: 0 4px 12px rgba(17, 24, 39, 0.08), 0 2px 4px rgba(17, 24, 39, 0.04);
  --shadow-lg: 0 12px 32px rgba(17, 24, 39, 0.12), 0 4px 8px rgba(17, 24, 39, 0.04);

  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 250ms ease;

  --container-width: 1160px;
  --header-height: 72px;
}

/* ==========================================================================
   Reset & base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-heading);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-heading);
  line-height: 1.25;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2rem, 4vw + 1rem, 3.25rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 2.5vw + 1rem, 2.4rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }

p { margin: 0 0 1em; color: var(--color-text-secondary); }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary-dark); }

ul { list-style: none; margin: 0; padding: 0; }

button { font-family: inherit; cursor: pointer; }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 12px 20px;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 200;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

section { padding: 72px 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.8rem;
  margin: 0 0 0.75em;
}

.eyebrow::before {
  content: '';
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--color-primary);
  flex-shrink: 0;
}

h1 em, h2 em, h3 em {
  font-style: italic;
  color: var(--color-primary-dark);
}

.section-heading {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-subtext { font-size: 1.05rem; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-dark);
  border-color: var(--color-border);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-small { padding: 10px 20px; font-size: 0.875rem; }
.btn-block { width: 100%; }

/* ==========================================================================
   Header / Navbar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-heading);
  flex-shrink: 0;
}
.logo:hover { color: var(--color-primary-dark); }

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  flex-shrink: 0;
}

.logo-text { font-family: var(--font-heading); }

.main-nav { flex: 1; display: flex; justify-content: center; }

.nav-list {
  display: flex;
  gap: 32px;
}

.nav-link {
  color: var(--color-heading);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 6px 0;
}
.nav-link:hover { color: var(--color-primary); }
.nav-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}
.nav-link:hover::after { width: 100%; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
}
.menu-toggle:hover { background: var(--color-bg-light); }

.menu-toggle-bar {
  width: 22px;
  height: 2px;
  background: var(--color-heading);
  margin: 0 auto;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.menu-toggle.is-active .menu-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.is-active .menu-toggle-bar:nth-child(2) { opacity: 0; }
.menu-toggle.is-active .menu-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  background: linear-gradient(180deg, var(--color-bg-light) 0%, var(--color-white) 100%);
  padding: 64px 0;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

.hero-content { max-width: 560px; }

.hero-subtext { font-size: 1.05rem; margin-bottom: 1.75em; }

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 2em;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.hero-photo-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-photo-card img {
  width: 100%;
  height: auto;
  display: block;
}

.hero-photo-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 28px 24px;
  background: linear-gradient(180deg, rgba(17, 24, 39, 0) 0%, rgba(17, 24, 39, 0.75) 100%);
  color: var(--color-white);
}

.hero-photo-caption strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.1rem;
}

.hero-photo-caption span {
  display: block;
  font-size: 0.85rem;
  opacity: 0.85;
  margin-top: 2px;
}

/* ==========================================================================
   Services
   ========================================================================== */
.services { background: var(--color-white); }

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.service-card {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  overflow: hidden;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow), border-color var(--transition-slow);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

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

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--color-bg-light);
  color: var(--color-primary);
  margin-bottom: 20px;
}

.service-card h3 { margin-bottom: 0.5em; }
.service-card p { margin: 0; font-size: 0.95rem; }

/* ==========================================================================
   About
   ========================================================================== */
.about { background: var(--color-bg-light); }

.about-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

.about-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  max-width: 360px;
  width: 100%;
  height: auto;
  margin: 0 auto;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.stat {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

/* ==========================================================================
   Testimonials
   ========================================================================== */
.testimonials { background: var(--color-white); }

.testimonial-carousel { max-width: 680px; margin: 0 auto; }

.testimonial-track {
  position: relative;
  min-height: 220px;
}

.testimonial-card {
  background: var(--color-bg-light);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow), visibility var(--transition-slow);
}

.testimonial-card.is-active {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
  position: relative;
}

.stars {
  color: var(--color-primary);
  font-size: 1.1rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.testimonial-text {
  font-size: 1.05rem;
  color: var(--color-heading);
  font-style: italic;
  margin-bottom: 1.25em;
}

.testimonial-author {
  font-weight: 600;
  color: var(--color-text-secondary);
  margin: 0;
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 24px;
}

.carousel-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  font-size: 1.4rem;
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}
.carousel-btn:hover { background: var(--color-bg-light); border-color: var(--color-primary); }

.carousel-dots { display: flex; gap: 8px; }

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  border: none;
  padding: 0;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}
.carousel-dot.is-active { background: var(--color-primary); transform: scale(1.25); }

/* ==========================================================================
   Appointment form
   ========================================================================== */
.appointment { background: var(--color-bg-light); }

.appointment-inner { max-width: 680px; margin: 0 auto; }

.appointment-form {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--color-heading);
}

.required { color: var(--color-primary); }

.form-group input,
.form-group textarea {
  font-family: inherit;
  font-size: 1rem;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-heading);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  outline: none;
}

.form-group.has-error input,
.form-group.has-error textarea {
  border-color: #DC2626;
}

.form-error {
  color: #DC2626;
  font-size: 0.8rem;
  margin-top: 6px;
  min-height: 1em;
}

.form-confirmation {
  margin-top: 20px;
  padding: 16px;
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  color: #065F46;
  border-radius: var(--radius-sm);
  font-weight: 500;
  text-align: center;
}

/* ==========================================================================
   Contact / Location
   ========================================================================== */
.contact { background: var(--color-white); }

.contact-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.contact-list {
  margin: 24px 0 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-list strong {
  display: block;
  color: var(--color-heading);
  margin-bottom: 2px;
}

.contact-list p { margin: 0; }

.contact-map {
  min-height: 320px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

/* ==========================================================================
   Closing CTA band
   ========================================================================== */
.cta-band {
  background: var(--color-primary-dark);
  text-align: center;
}

.cta-band-inner {
  max-width: 620px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cta-band-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #93C5FD;
  margin-bottom: 24px;
}

.cta-band h2 { color: var(--color-white); }
.cta-band h2 em { color: #93C5FD; }
.cta-band p { color: #BFDBFE; }

.cta-band-meta {
  margin-top: 20px;
  font-size: 0.85rem;
  color: #93C5FD;
}

.btn-cta {
  background: var(--color-white);
  color: var(--color-primary-dark);
  margin-top: 8px;
}

.btn-cta:hover {
  background: #DBEAFE;
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* ==========================================================================
   Floating WhatsApp button
   ========================================================================== */
.whatsapp-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: 90;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.whatsapp-float:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-3px) scale(1.05);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--color-primary-dark);
  color: #DBEAFE;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-inner {
  padding: 48px 20px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}

.footer-brand .logo-text {
  color: var(--color-white);
  font-size: 1.2rem;
  font-weight: 700;
}

.footer-brand p {
  color: #BFDBFE;
  margin-top: 6px;
}

.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-nav a {
  color: #DBEAFE;
  font-size: 0.9rem;
}
.footer-nav a:hover { color: var(--color-white); }

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
}
.footer-social a:hover { background: rgba(255,255,255,0.2); color: var(--color-white); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 20px 0;
}

.footer-bottom p {
  margin: 0;
  font-size: 0.85rem;
  color: #BFDBFE;
  text-align: center;
}

/* ==========================================================================
   Responsive breakpoints
   ========================================================================== */
@media (min-width: 640px) {
  .form-row { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 768px) {
  section { padding: 96px 0; }

  .hero-inner { grid-template-columns: 1.1fr 1fr; }
  .about-inner { grid-template-columns: 0.8fr 1fr; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }

  .footer-inner {
    grid-template-columns: 1fr auto auto;
    padding: 56px 20px;
  }
}

@media (min-width: 1024px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 899px) {
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
  }

  .main-nav.is-open { max-height: 400px; }

  .nav-list {
    flex-direction: column;
    gap: 0;
    padding: 8px 20px 20px;
  }

  .nav-list li { border-bottom: 1px solid var(--color-border); }
  .nav-list li:last-child { border-bottom: none; }

  .nav-link { display: block; padding: 14px 0; }
  .nav-link::after { display: none; }

  .header-actions .btn-small { display: none; }
  .menu-toggle { display: flex; }
}

@media (min-width: 900px) {
  .menu-toggle { display: none; }
}