/* ========== VARIABLES ========== */
:root {
  --color-primary: #0D2B45;
  --color-primary-light: #1a4a6e;
  --color-accent: #2E86AB;
  --color-accent-light: #4fa8cc;
  --color-gold: #C8A951;
  --color-white: #FFFFFF;
  --color-bg: #F8F9FA;
  --color-bg-dark: #0D2B45;
  --color-text: #2D3748;
  --color-text-light: #718096;
  --color-border: #E2E8F0;
  --color-success: #48BB78;
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: .3s ease;
}

/* ========== RESET ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-light); }
ul { list-style: none; }
input, select, textarea, button { font-family: inherit; font-size: inherit; }

/* ========== CONTAINER ========== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .75rem 1.75rem;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 600; font-size: .95rem;
  cursor: pointer; transition: all var(--transition);
  text-align: center; white-space: nowrap;
}
.btn-primary { background: var(--color-accent); color: var(--color-white); border-color: var(--color-accent); }
.btn-primary:hover { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-white); }
.btn-secondary { background: var(--color-bg); color: var(--color-text); border-color: var(--color-border); }
.btn-secondary:hover { background: var(--color-border); }
.btn-outline { border-color: var(--color-accent); color: var(--color-accent); background: transparent; }
.btn-outline:hover { background: var(--color-accent); color: var(--color-white); }
.btn-outline-light { border-color: rgba(255,255,255,.6); color: var(--color-white); background: transparent; }
.btn-outline-light:hover { background: rgba(255,255,255,.15); border-color: var(--color-white); color: var(--color-white); }
.btn-lg { padding: 1rem 2.25rem; font-size: 1.05rem; }
.btn-sm { padding: .5rem 1.25rem; font-size: .85rem; }

/* ========== NAVBAR ========== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow-md); }
.nav-container { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.nav-logo { display: flex; align-items: center; gap: .75rem; text-decoration: none; color: var(--color-primary); }
.nav-logo-img { width: 42px; height: 42px; border-radius: 50%; object-fit: cover; }
.nav-logo-text { display: flex; flex-direction: column; }
.nav-logo-name { font-family: var(--font-heading); font-weight: 700; font-size: 1.05rem; line-height: 1.2; }
.nav-logo-sub { font-size: .72rem; color: var(--color-text-light); letter-spacing: .02em; }
.nav-menu { display: flex; align-items: center; gap: .25rem; }
.nav-menu li a {
  display: block; padding: .5rem 1rem;
  font-size: .9rem; font-weight: 500;
  color: var(--color-text); border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.nav-menu li a:hover { color: var(--color-accent); background: rgba(46,134,171,.06); }
.nav-cta {
  background: var(--color-accent) !important;
  color: var(--color-white) !important;
  padding: .5rem 1.25rem !important;
  border-radius: var(--radius-sm) !important;
}
.nav-cta:hover { background: var(--color-primary) !important; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: .5rem; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--color-primary); border-radius: 2px; transition: all var(--transition); }

/* ========== HERO ========== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  padding-top: 70px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg-img { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(13,43,69,.85) 0%, rgba(13,43,69,.6) 50%, rgba(46,134,171,.4) 100%);
}
.hero-content {
  position: relative; z-index: 1;
  color: var(--color-white);
  padding: 4rem 0;
}
.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}
.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  max-width: 540px;
  opacity: .9;
  margin-bottom: 2rem;
  line-height: 1.7;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }
.hero-stats { display: flex; gap: 3rem; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-gold);
}
.hero-stat-label { font-size: .85rem; opacity: .8; }

/* ========== SECTIONS ========== */
.section { padding: 5rem 0; }
.section-dark { background: var(--color-bg-dark); color: var(--color-white); }
.section-dark .section-subtitle { color: rgba(255,255,255,.7); }
.section-accent { background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%); color: var(--color-white); }
.section-accent .section-subtitle { color: rgba(255,255,255,.7); }
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  margin-bottom: .75rem;
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-light);
  max-width: 560px;
  margin: 0 auto;
}

/* ========== SERVICES ========== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}
.service-card {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: all var(--transition);
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-accent); }
.service-featured { border-color: var(--color-accent); background: linear-gradient(to bottom, rgba(46,134,171,.04), var(--color-white)); }
.service-badge {
  position: absolute; top: 1rem; right: 1rem;
  background: var(--color-gold); color: var(--color-primary);
  font-size: .7rem; font-weight: 700; text-transform: uppercase;
  padding: .25rem .75rem; border-radius: 20px; letter-spacing: .05em;
}
.service-icon { width: 56px; height: 56px; margin: 0 auto 1rem; color: var(--color-accent); }
.service-name { font-family: var(--font-heading); font-size: 1.15rem; font-weight: 600; margin-bottom: .5rem; }
.service-desc { font-size: .9rem; color: var(--color-text-light); margin-bottom: 1rem; line-height: 1.6; }
.service-price { font-weight: 700; color: var(--color-accent); font-size: .95rem; }

/* ========== CASES (BEFORE/AFTER) ========== */
.cases-filter { display: flex; gap: .5rem; flex-wrap: wrap; justify-content: center; margin-bottom: 2.5rem; }
.cases-filter-btn {
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.8); padding: .5rem 1.25rem;
  border-radius: 20px; cursor: pointer; font-size: .85rem; font-weight: 500;
  transition: all var(--transition);
}
.cases-filter-btn:hover { background: rgba(255,255,255,.2); }
.cases-filter-btn.active { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-white); }
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.case-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(255,255,255,.05);
  transition: all var(--transition);
}
.case-card.hidden { display: none; }
.case-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.case-title {
  padding: .75rem 1rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  text-align: center;
}

/* Before/After Slider */
.ba-slider {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: ew-resize;
  user-select: none;
  -webkit-user-select: none;
}
.ba-before, .ba-after {
  position: absolute; inset: 0;
}
.ba-before img, .ba-after img {
  width: 100%; height: 100%; object-fit: cover;
}
.ba-before { clip-path: inset(0 50% 0 0); }
.ba-handle {
  position: absolute; top: 0; bottom: 0;
  left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  width: 40px; z-index: 5;
  pointer-events: none;
}
.ba-handle-line { flex: 1; width: 3px; background: var(--color-white); box-shadow: 0 0 6px rgba(0,0,0,.4); }
.ba-handle-circle {
  width: 40px; height: 40px;
  background: var(--color-white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,.3);
  color: var(--color-primary);
}
.ba-label {
  position: absolute; bottom: .75rem;
  background: rgba(0,0,0,.6);
  color: var(--color-white);
  font-size: .7rem; font-weight: 600;
  padding: .25rem .75rem; border-radius: 4px;
  text-transform: uppercase; letter-spacing: .05em;
  z-index: 4;
}
.ba-label-before { left: .75rem; }
.ba-label-after { right: .75rem; }

/* ========== PROCESS ========== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.process-step {
  position: relative;
  text-align: center;
}
.process-img {
  width: 100%; aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}
.process-number {
  position: absolute; top: .5rem; left: .5rem;
  width: 32px; height: 32px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .85rem;
}
.process-step h4 { font-family: var(--font-heading); font-size: 1rem; margin-bottom: .25rem; }
.process-step p { font-size: .85rem; color: var(--color-text-light); }
.process-video { text-align: center; }
.process-video h3 { font-family: var(--font-heading); font-size: 1.5rem; margin-bottom: 1.5rem; }
.video-carousel { max-width: 700px; margin: 0 auto 1rem; }
.video-carousel video {
  width: 100%;
  border-radius: var(--radius);
  background: #000;
}
.video-thumbs { display: flex; gap: .5rem; justify-content: center; flex-wrap: wrap; }
.video-thumb {
  padding: .4rem 1rem; border: 1px solid var(--color-border);
  border-radius: 20px; background: var(--color-bg);
  cursor: pointer; font-size: .8rem; font-weight: 500;
  transition: all var(--transition);
}
.video-thumb:hover { border-color: var(--color-accent); color: var(--color-accent); }
.video-thumb.active { background: var(--color-accent); color: var(--color-white); border-color: var(--color-accent); }

/* ========== BOOKING ========== */
.booking-wrapper { max-width: 600px; margin: 0 auto; }
.booking-form {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 2rem;
  color: var(--color-text);
}
.booking-step { display: none; }
.booking-step.active { display: block; }
.booking-step-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  text-align: center;
}
.clinic-select { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.clinic-option input { display: none; }
.clinic-option-card {
  display: flex; flex-direction: column; align-items: center; gap: .25rem;
  padding: 1.5rem 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}
.clinic-option-card strong { font-size: 1.05rem; color: var(--color-primary); }
.clinic-option-card span { font-size: .8rem; color: var(--color-text-light); }
.clinic-option input:checked + .clinic-option-card { border-color: var(--color-accent); background: rgba(46,134,171,.06); }
.clinic-option-logo { width: 60px; height: auto; margin-bottom: .5rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-size: .85rem; font-weight: 600;
  margin-bottom: .35rem;
  color: var(--color-primary);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: .7rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none; border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(46,134,171,.15);
}
.time-slots { display: flex; flex-wrap: wrap; gap: .5rem; }
.time-slots-hint { font-size: .85rem; color: var(--color-text-light); font-style: italic; }
.time-slot {
  padding: .5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  cursor: pointer; font-size: .85rem; font-weight: 500;
  transition: all var(--transition);
}
.time-slot:hover { border-color: var(--color-accent); color: var(--color-accent); }
.time-slot.active { background: var(--color-accent); color: var(--color-white); border-color: var(--color-accent); }
.time-slot.disabled { opacity: .4; cursor: not-allowed; pointer-events: none; }
.booking-nav { display: flex; justify-content: space-between; margin-top: 1.5rem; }
.booking-progress { height: 4px; background: var(--color-border); border-radius: 2px; margin-top: 1.5rem; overflow: hidden; }
.booking-progress-bar { height: 100%; background: var(--color-accent); transition: width var(--transition); border-radius: 2px; }
.booking-summary {
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  font-size: .95rem;
  line-height: 1.8;
}
.booking-summary strong { color: var(--color-primary); }
.booking-success {
  text-align: center;
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  color: var(--color-text);
}
.booking-success h3 { font-family: var(--font-heading); font-size: 1.5rem; margin: 1rem 0 .5rem; color: var(--color-primary); }
.booking-success p { color: var(--color-text-light); margin-bottom: 1.5rem; }

/* ========== LOCATIONS ========== */
.locations-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 2rem; }
.location-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}
.location-card:hover { box-shadow: var(--shadow-lg); }
.location-map iframe { display: block; }
.location-info { padding: 1.5rem; }
.location-info h3 { font-family: var(--font-heading); font-size: 1.25rem; margin-bottom: .75rem; }
.location-info p { font-size: .9rem; color: var(--color-text-light); margin-bottom: .5rem; }
.location-info .btn { margin-top: .75rem; }
.location-logo { width: 80px; height: auto; margin-bottom: .5rem; }

/* ========== FOOTER ========== */
.footer { background: var(--color-primary); color: rgba(255,255,255,.85); padding: 4rem 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; }
.footer-logo { width: 60px; height: 60px; border-radius: 50%; object-fit: cover; margin-bottom: 1rem; }
.footer-col p { font-size: .9rem; line-height: 1.6; }
.footer-col h4 { font-family: var(--font-heading); font-size: 1rem; margin-bottom: 1rem; color: var(--color-white); }
.footer-col ul li { margin-bottom: .5rem; }
.footer-col ul li a { color: rgba(255,255,255,.7); font-size: .9rem; }
.footer-col ul li a:hover { color: var(--color-white); }
.footer-bottom {
  margin-top: 3rem;
  padding: 1.5rem 0;
  border-top: 1px solid rgba(255,255,255,.1);
  text-align: center;
  font-size: .8rem;
  color: rgba(255,255,255,.5);
}

/* ========== WHATSAPP FLOAT ========== */
.wa-float {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  width: 56px; height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(37,211,102,.4);
  z-index: 999;
  transition: transform var(--transition);
}
.wa-float:hover { transform: scale(1.1); }

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed; top: 70px; left: 0; right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    transition: transform var(--transition);
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu li a { padding: .75rem 1rem; }
  .hero-content { padding: 2rem 0; }
  .hero-stats { gap: 1.5rem; }
  .hero-stat-number { font-size: 2rem; }
  .section { padding: 3.5rem 0; }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: repeat(3, 1fr); }
  .clinic-select { grid-template-columns: 1fr; }
  .locations-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 480px) {
  .services-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}