/* ==========================================================================
   Dr Stéphane RADOYKOV — Style
   Tufte-inspired: generous whitespace, strong typography, fine rules
   ========================================================================== */

/* CSS Variables */
:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #4a4a4a;
  --color-primary: #0f2942;
  --color-primary-hover: #1a3d5c;
  --color-accent: #2563eb;
  --color-border: #e5e5e5;
  --color-border-dark: #c0c0c0;
  --color-surface: #f8f9fa;
  --color-notice: #fffbeb;
  --color-notice-border: #f59e0b;
  
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  
  --measure: 70ch;
  --measure-wide: 78ch;
  --space-xs: clamp(0.25rem, 0.5vw, 0.5rem);
  --space-sm: clamp(0.5rem, 1vw, 1rem);
  --space-md: clamp(1.25rem, 2.5vw, 1.5rem);
  --space-lg: clamp(1.5rem, 3vw, 2.5rem);
  --space-xl: clamp(2rem, 5vw, 4rem);
  --space-2xl: clamp(3rem, 8vw, 6rem);
  
  /* Harmonized font sizes - mobile-first, larger base */
  --text-xs: clamp(0.85rem, 0.8rem + 0.25vw, 0.9rem);
  --text-sm: clamp(1rem, 0.95rem + 0.25vw, 1.1rem);
  --text-base: clamp(1.1rem, 1.05rem + 0.3vw, 1.2rem);
  --text-lg: clamp(1.2rem, 1.15rem + 0.4vw, 1.45rem);
  --text-xl: clamp(1.35rem, 1.25rem + 0.5vw, 1.7rem);
  --text-2xl: clamp(1.6rem, 1.45rem + 0.75vw, 2.4rem);
  --text-3xl: clamp(2rem, 1.8rem + 1vw, 3.2rem);
  
  --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Page Transition Animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

body {
  opacity: 0;
  animation: fadeIn 0.5s ease forwards;
}

body.page-loaded main {
  animation: fadeInUp 0.6s ease forwards;
  animation-delay: 0.1s;
}

body.page-loaded footer {
  animation: fadeIn 0.5s ease forwards;
  animation-delay: 0.3s;
}

@media (prefers-reduced-motion: reduce) {
  body,
  body.page-loaded main,
  body.page-loaded footer {
    animation: none;
    opacity: 1;
  }
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-serif);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  z-index: 1000;
  border-radius: 0 0 4px 4px;
}

.skip-link:focus {
  top: 0;
}

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); margin-bottom: var(--space-md); }
h3 { font-size: var(--text-lg); margin-bottom: var(--space-sm); }

p { margin-bottom: var(--space-md); }
p:last-child { margin-bottom: 0; }

.small-caps {
  font-variant: small-caps;
  letter-spacing: 0.05em;
}

a {
  color: var(--color-primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

a:hover {
  color: var(--color-accent);
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-text {
  max-width: var(--measure);
}

.container-wide {
  max-width: var(--measure-wide);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-md);
  max-width: 1200px;
  margin: 0 auto;
  gap: var(--space-md);
}

.site-title {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  transition: opacity var(--transition-fast);
  white-space: nowrap;
}

.site-title:hover {
  color: var(--color-text);
  opacity: 0.8;
}

/* Navigation - Always visible */
.nav-list {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-list a {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-xs) var(--space-sm);
  position: relative;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--space-sm);
  right: var(--space-sm);
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

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

.nav-list a:hover::after,
.nav-list a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-list a[aria-current="page"] {
  color: var(--color-text);
}

@media (max-width: 500px) {
  .header-inner {
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
  }
  
  .nav-list {
    justify-content: center;
    gap: var(--space-sm);
  }
  
  .nav-list a {
    font-size: var(--text-base);
    padding: var(--space-xs) var(--space-sm);
  }
}

/* Hero */
.hero {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 900px) {
  .hero .container {
    grid-template-columns: 1fr auto;
  }
}

.hero-content {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.hero-content.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hero h1 {
  margin-bottom: var(--space-sm);
}

.lead {
  font-size: var(--text-xl);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  max-width: 50ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.hero-portrait {
  margin: 0;
  opacity: 0;
  transform: translateY(30px) scale(0.98);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
  transition-delay: 150ms;
}

.hero-portrait.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.hero-portrait img {
  display: block;
  width: 100%;
  max-width: 300px;
  height: auto;
  aspect-ratio: 1/1;
  object-fit: cover;
  object-position: center top;
  background: var(--color-surface);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.04);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.hero-portrait img:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12), 0 2px 6px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

@media (max-width: 900px) {
  .hero .container {
    text-align: center;
  }
  
  .hero-portrait {
    display: flex;
    justify-content: center;
    order: -1;
  }
  
  .hero-portrait img {
    max-width: 220px;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .lead {
    margin-left: auto;
    margin-right: auto;
  }
}

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: 6px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  cursor: pointer;
  border: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(15, 41, 66, 0.15);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(15, 41, 66, 0.2);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(15, 41, 66, 0.15);
}

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

.btn-secondary:hover {
  background: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: translateY(0);
}

/* Sections */
.section {
  padding: var(--space-xl) 0;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .section, .hero-content, .hero-portrait, .section-quote-minimal {
    opacity: 1;
    transform: none;
  }
}

.section + .section {
  border-top: 1px solid var(--color-border);
}

/* Intro Text - base for other text sizing */
.intro-text {
  font-size: var(--text-lg);
  line-height: 1.75;
}

/* Styled Quote with vertical bar */
.styled-quote {
  position: relative;
  margin: var(--space-lg) 0;
  padding: var(--space-md) var(--space-lg);
  border-left: 3px solid var(--color-primary);
  background: linear-gradient(to right, rgba(15, 41, 66, 0.03), transparent);
}

.styled-quote::before {
  content: '"';
  position: absolute;
  top: -0.2em;
  left: 0.3em;
  font-family: Georgia, serif;
  font-size: 3em;
  color: var(--color-primary);
  opacity: 0.2;
  line-height: 1;
}

.styled-quote::after {
  content: '"';
  position: absolute;
  bottom: -0.5em;
  right: 0.5em;
  font-family: Georgia, serif;
  font-size: 3em;
  color: var(--color-primary);
  opacity: 0.2;
  line-height: 1;
}

.styled-quote p {
  font-size: var(--text-base);
  font-style: italic;
  color: var(--color-text);
  margin: 0;
  position: relative;
  z-index: 1;
}

/* Values List (replaces cards) */
.values-list {
  margin-top: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.value-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xs);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.value-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

@media (min-width: 600px) {
  .value-item {
    grid-template-columns: 180px 1fr;
    gap: var(--space-md);
    align-items: baseline;
  }
}

.value-item dt {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-primary);
}

.value-item dd {
  margin: 0;
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Hero Quote - minimal style, no background */
.section-quote-minimal {
  padding: var(--space-xl) 0;
  text-align: center;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.section-quote-minimal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-quote {
  margin: 0;
}

.hero-quote p {
  font-size: var(--text-2xl);
  font-style: italic;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.hero-quote footer {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: normal;
}

/* Footer */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: var(--space-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-title {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.footer-subtitle {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.footer-info p,
.footer-info address {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: normal;
  margin-bottom: var(--space-xs);
}

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

.footer-links li {
  margin-bottom: var(--space-xs);
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
}

/* SEO text - very subtle */
.footer-seo {
  font-size: 0.65rem;
  color: var(--color-border-dark);
  opacity: 0.5;
  text-align: center;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

/* Tarifs Page */
.tarifs-header {
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.tarifs-header h1 {
  margin-bottom: var(--space-sm);
}

.tarifs-header .lead {
  font-size: var(--text-base);
  max-width: var(--measure-wide);
  color: var(--color-text-muted);
  margin-bottom: 0;
}

.tarifs-section {
  padding: var(--space-lg) 0;
}

.tarifs-section .container-wide {
  max-width: var(--measure-wide);
}

.tarifs-section + .tarifs-section {
  border-top: 1px solid var(--color-border);
}

.tarifs-section h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-md);
}

.tarif-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tarif-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-fast);
}

.tarif-item:hover {
  background: var(--color-surface);
  margin: 0 calc(-1 * var(--space-sm));
  padding-left: var(--space-sm);
  padding-right: var(--space-sm);
  border-radius: 4px;
}

.tarif-item:last-child {
  border-bottom: none;
}

.tarif-name {
  flex: 1;
  font-size: var(--text-base);
}

.tarif-name small {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

.tarif-price {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--color-primary);
  white-space: nowrap;
}

.tarif-note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-surface);
  padding: var(--space-md);
  border-radius: 6px;
  margin-top: var(--space-md);
  border-left: 3px solid var(--color-border-dark);
}

/* Payment Icons */
.payment-methods {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-md);
}

@media (max-width: 600px) {
  .payment-methods {
    grid-template-columns: repeat(2, 1fr);
  }
}

.payment-method {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast), transform var(--transition-fast);
  text-align: center;
}

.payment-method:hover {
  color: var(--color-text);
  transform: translateY(-2px);
}

.payment-method svg {
  width: 32px;
  height: 32px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
}

/* Legal */
.legal-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-surface);
  padding: var(--space-md);
  border-left: 3px solid var(--color-border-dark);
  margin-top: var(--space-md);
  border-radius: 0 6px 6px 0;
}

/* Insurance Info */
.insurance-info {
  background: var(--color-surface);
  padding: var(--space-lg);
  border-radius: 8px;
  margin: var(--space-lg) 0;
}

.insurance-info h2 {
  font-size: var(--text-xl);
}

.insurance-info p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
}

/* Contact Page */
.contact-notice {
  background: var(--color-notice);
  border-left: 4px solid var(--color-notice-border);
  padding: var(--space-lg);
  margin: var(--space-lg) 0;
  border-radius: 0 8px 8px 0;
  max-width: var(--measure-wide);
}

.contact-notice h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-md);
}

.contact-notice p {
  font-size: var(--text-base);
  color: var(--color-text);
}

.contact-section {
  padding: var(--space-lg) 0;
  max-width: var(--measure-wide);
}

.contact-section + .contact-section {
  border-top: 1px solid var(--color-border);
}

.contact-section h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-md);
}

/* Address Card */
.address-card {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  color: #fff;
  padding: var(--space-lg);
  border-radius: 12px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  max-width: 320px;
}

.address-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(15, 41, 66, 0.25);
}

.address-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  pointer-events: none;
}

.address-card h2 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-sm);
  color: rgba(255,255,255,0.8);
  font-weight: 500;
}

.address-card address {
  font-style: normal;
  font-size: var(--text-xl);
  font-weight: 500;
  line-height: 1.5;
}

/* Form Styles */
.contact-form {
  max-width: 500px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

@media (max-width: 500px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-serif);
  font-size: var(--text-base);
  border: 1.5px solid var(--color-border-dark);
  border-radius: 6px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  background: #fff;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.form-group input[aria-invalid="true"],
.form-group textarea[aria-invalid="true"] {
  border-color: #dc2626;
  box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.1);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

/* Mobile Enhancements */
@media (max-width: 680px) {
  .hero {
    padding: var(--space-xl) 0;
  }
  
  .footer-content {
    text-align: center;
  }
  
  .tarif-item {
    flex-direction: column;
    gap: var(--space-sm);
  }
  
  .tarif-price {
    align-self: flex-start;
  }
}

/* Utilities */
.text-center { text-align: center; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }