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

:root {
  --color-bg: #fafaf9;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-secondary: #6b7280;
  --color-primary: #1b4d3e;
  --color-primary-light: #2d7a5f;
  --color-primary-bg: #e8f5f0;
  --color-accent: #b8860b;
  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-light);
  transition: all 0.3s ease;
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-primary);
}

.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  background: var(--color-border-light);
  border-radius: var(--radius-sm);
}

.lang-btn {
  border: none;
  background: transparent;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--color-text-secondary);
  padding: 5px 9px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

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

.lang-btn.active {
  background: var(--color-primary);
  color: #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-cta {
  background: var(--color-primary);
  color: white !important;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  transition: background 0.2s !important;
}

.nav-cta:hover {
  background: var(--color-primary-light) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all 0.3s;
  border-radius: 2px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-bg);
}

.btn-block {
  width: 100%;
}

/* ===== HERO ===== */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #f0fdf7 0%, #fafaf9 50%, #fefce8 100%);
  overflow: hidden;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-subtitle {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 20px;
  color: var(--color-text);
}

.hero-description {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-badges {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 500;
}

.hero-image {
  display: flex;
  justify-content: center;
}

.hero-image-wrapper {
  position: relative;
  width: 400px;
  height: 500px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-image-wrapper::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255,255,255,0.3);
}

.hero-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== SECTIONS ===== */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== ABOUT ===== */
.about {
  background: var(--color-surface);
}

.osteo-intro {
  margin-bottom: 80px;
  padding-bottom: 80px;
  border-bottom: 1px solid var(--color-border);
}

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

.osteo-card {
  padding: 28px 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
}

.osteo-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.osteo-card p {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

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

.about-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
  background: var(--color-bg);
}

.about-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.about-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-bg);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.about-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.about-card p {
  font-size: 0.9rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 8px;
}

.about-detail {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ===== SERVICES ===== */
.services {
  background: var(--color-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
}

.service-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-primary-bg);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.service-card > p {
  font-size: 0.82rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 14px;
}

.service-card ul {
  list-style: none;
}

.service-card li {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  padding: 3px 0;
  padding-left: 14px;
  position: relative;
}

.service-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.4;
}

/* ===== TARIFS ===== */
.tarifs {
  background: var(--color-surface);
}

.tarifs-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 32px;
  align-items: start;
}

.tarif-main {
  background: linear-gradient(135deg, var(--color-primary) 0%, #2d7a5f 100%);
  color: white;
  padding: 48px 36px;
  border-radius: var(--radius-xl);
  text-align: center;
  position: sticky;
  top: 100px;
}

.tarif-price {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 4px;
  margin-bottom: 8px;
}

.tarif-amount {
  font-family: var(--font-serif);
  font-size: 4.5rem;
  font-weight: 700;
  line-height: 1;
}

.tarif-currency {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: 12px;
}

.tarif-label {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 4px;
  opacity: 0.95;
}

.tarif-duration {
  font-size: 0.9rem;
  opacity: 0.75;
  margin-bottom: 28px;
}

.tarif-main .btn-primary {
  background: white;
  color: var(--color-primary);
}

.tarif-main .btn-primary:hover {
  background: #f0fdf7;
}

.tarif-info-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tarif-info-card {
  padding: 24px 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

.tarif-info-card h4 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.tarif-info-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ===== BOOKING ===== */
.booking {
  background: var(--color-bg);
}

.booking-app {
  max-width: 860px;
  margin: 0 auto;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.booking-step {
  padding: 40px;
}

.hidden {
  display: none !important;
}

/* Calendar */
.booking-calendar {
  margin-bottom: 32px;
}

.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.calendar-month {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
}

.calendar-nav {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  transition: all 0.2s;
}

.calendar-nav:hover {
  background: var(--color-primary-bg);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  margin-bottom: 8px;
}

.calendar-weekdays span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 8px 0;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: default;
  border: none;
  background: none;
  color: var(--color-text-secondary);
  opacity: 0.35;
  font-family: var(--font-sans);
}

.calendar-day.available {
  cursor: pointer;
  opacity: 1;
  color: var(--color-text);
  transition: all 0.2s;
}

.calendar-day.available:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.calendar-day.selected {
  background: var(--color-primary);
  color: white;
}

.calendar-day.today {
  border: 2px solid var(--color-primary);
}

/* Slots */
.slots-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.slots-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 10px;
}

.slots-empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  padding: 20px;
}

.slot-btn {
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  font-size: 0.9rem;
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
  color: var(--color-text);
}

.slot-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.slot-btn.selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* Booking Form */
.booking-summary {
  margin-bottom: 28px;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  margin-bottom: 16px;
  font-family: var(--font-sans);
  padding: 0;
}

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

.summary-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--color-primary-bg);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}

.summary-card div {
  display: flex;
  flex-direction: column;
}

.summary-card strong {
  font-size: 1rem;
}

.summary-card span {
  font-size: 0.9rem;
  opacity: 0.8;
}

.booking-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(27,77,62,0.1);
}

.form-group textarea {
  resize: vertical;
}

/* Confirmation */
.booking-confirmation {
  text-align: center;
  padding: 40px 20px;
}

.confirmation-icon {
  color: var(--color-primary);
  margin-bottom: 20px;
}

.booking-confirmation h3 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.booking-confirmation > p {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.confirmation-details {
  background: var(--color-primary-bg);
  padding: 20px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  display: inline-block;
  text-align: left;
  min-width: 280px;
}

.confirmation-details p {
  font-size: 0.9rem;
  padding: 4px 0;
}

.confirmation-note {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  max-width: 400px;
  margin: 0 auto 24px;
  line-height: 1.6;
}

/* ===== CONTACT ===== */
.contact {
  background: var(--color-surface);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  transition: all 0.3s;
}

a.contact-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.contact-card svg {
  flex-shrink: 0;
  color: var(--color-primary);
}

.contact-card strong {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 2px;
}

.contact-card span {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* ===== FOOTER ===== */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* ===== LOADING SPINNER ===== */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.8s ease infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-title {
    font-size: 2.8rem;
  }

  .hero-description {
    margin: 0 auto 32px;
  }

  .hero-actions {
    justify-content: center;
    flex-wrap: wrap;
  }

  .hero-badges {
    justify-content: center;
  }

  .hero-image-wrapper {
    width: 300px;
    height: 380px;
  }

  .hero-image {
    order: -1;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .osteo-grid {
    grid-template-columns: 1fr;
  }

  .nav-left {
    gap: 10px;
  }

  .lang-btn {
    padding: 4px 7px;
    font-size: 0.7rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .tarifs-grid {
    grid-template-columns: 1fr;
  }

  .tarif-main {
    position: static;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 2rem;
  }

  .booking-step {
    padding: 24px;
  }

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

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.2rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .slots-list {
    grid-template-columns: repeat(2, 1fr);
  }
}