/* ================================================================ */
/* EVOL CONSEIL — Stylesheet principal                              */
/* Charte : gris dominant, navy/bleu accent, typographie moderne    */
/* ================================================================ */

/* === RESET & TYPOGRAPHIE === */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Palette Evol */
  --navy: #1B2A4A;
  --navy-dark: #0F1A2E;
  --accent: #2E75B6;
  --accent-light: #5896CC;
  --gold: #E6B84A;

  /* Gris dominant (préférence Hyacinthe) */
  --gray-50: #FAFBFC;
  --gray-100: #F2F4F7;
  --gray-200: #E5E8ED;
  --gray-300: #D0D5DD;
  --gray-400: #98A2B3;
  --gray-500: #667085;
  --gray-600: #475467;
  --gray-700: #344054;
  --gray-800: #1F2937;
  --gray-900: #101828;

  /* Système */
  --bg-primary: var(--gray-50);
  --bg-secondary: var(--gray-100);
  --bg-card: #FFFFFF;
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-muted: var(--gray-500);
  --border: var(--gray-200);

  /* Espacements */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;
  --space-3xl: 8rem;

  /* Typographie */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-serif: 'Georgia', 'Cambria', serif;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 200ms;
  --duration: 400ms;
  --duration-slow: 800ms;

  /* Container */
  --container-max: 1200px;
  --container-narrow: 800px;
}

/* Dark mode optionnel */
[data-theme="dark"] {
  --bg-primary: #0A0E18;
  --bg-secondary: #131A2A;
  --bg-card: #1A2138;
  --text-primary: #F2F4F7;
  --text-secondary: #98A2B3;
  --text-muted: #667085;
  --border: #2A3550;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--duration) var(--ease), color var(--duration) var(--ease);
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease);
}

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

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

/* === TYPOGRAPHIE === */

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  line-height: 1.7;
}

p.lead {
  font-size: 1.25rem;
  color: var(--text-primary);
  line-height: 1.6;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

/* === LAYOUT === */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

section {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

section.tight {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

/* === HEADER NAVIGATION === */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(250, 251, 252, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background-color var(--duration) var(--ease);
}

[data-theme="dark"] .site-header {
  background-color: rgba(10, 14, 24, 0.85);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  max-width: var(--container-max);
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--navy);
  letter-spacing: -0.02em;
}

[data-theme="dark"] .nav-logo {
  color: var(--gray-100);
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-menu {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
  align-items: center;
}

.nav-menu a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: var(--space-xs) 0;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: width var(--duration) var(--ease);
}

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

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

.nav-menu a.active {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease);
  background: transparent;
}

.theme-toggle:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

.nav-toggle {
  display: none;
  width: 36px;
  height: 36px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  transition: all var(--duration-fast) var(--ease);
}

/* === BUTTONS === */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.875rem 1.5rem;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--duration-fast) var(--ease);
  border: 1px solid transparent;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: var(--navy-dark);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(27, 42, 74, 0.2);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.btn-arrow::after {
  content: '→';
  margin-left: 0.25rem;
  transition: transform var(--duration-fast) var(--ease);
}

.btn-arrow:hover::after {
  transform: translateX(4px);
}

/* === HERO HOME === */

.hero {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

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

.hero-content h1 .accent {
  color: var(--accent);
}

.hero-content p.lead {
  margin-bottom: var(--space-lg);
  color: var(--text-secondary);
}

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

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
}

.hero-lov {
  width: 100%;
  max-width: 320px;
  opacity: 0.95;
  filter: drop-shadow(0 30px 60px rgba(27, 42, 74, 0.12));
  animation: lov-rise 1.2s var(--ease) both;
}

@keyframes lov-rise {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 0.95;
    transform: translateY(0);
  }
}

/* === SECTION TITLES === */

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.section-header.align-left {
  text-align: left;
  margin-left: 0;
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  font-size: 1.125rem;
}

/* === CARDS GÉNÉRIQUES === */

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: var(--space-lg);
  transition: all var(--duration) var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -10px rgba(16, 24, 40, 0.08);
  border-color: var(--gray-300);
}

[data-theme="dark"] .card:hover {
  border-color: var(--accent);
}

.card-number {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.card h3 {
  margin-bottom: var(--space-sm);
}

.card p {
  font-size: 0.9375rem;
}

/* === GRILLE 2 AXES (HOME + OFFRE) === */

.axes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.axe-card {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--gray-100) 100%);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--duration) var(--ease);
}

[data-theme="dark"] .axe-card {
  background: linear-gradient(135deg, var(--bg-card) 0%, #131A2A 100%);
}

.axe-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: var(--accent);
  transition: width var(--duration) var(--ease);
}

.axe-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 48px -12px rgba(16, 24, 40, 0.1);
}

.axe-card:hover::before {
  width: 8px;
}

.axe-card .eyebrow {
  font-size: 0.75rem;
}

.axe-card h3 {
  margin-bottom: var(--space-md);
  font-size: 1.625rem;
}

.axe-card ul {
  list-style: none;
  margin-top: var(--space-md);
}

.axe-card ul li {
  padding: 0.375rem 0;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  position: relative;
  padding-left: 1.5rem;
}

.axe-card ul li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 600;
}

/* === SECTION 3 PILIERS === */

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.pillar {
  text-align: left;
}

.pillar-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background-color: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-bottom: var(--space-md);
  font-weight: 700;
}

.pillar h4 {
  margin-bottom: var(--space-sm);
}

.pillar p {
  font-size: 0.9375rem;
}

/* === LOV SECTION === */

.lov-section {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-2xl);
  align-items: center;
}

.lov-section.reverse {
  grid-template-columns: 1.5fr 1fr;
}

.lov-visual {
  display: flex;
  justify-content: center;
}

.lov-visual img {
  max-width: 240px;
  width: 100%;
  filter: drop-shadow(0 20px 40px rgba(27, 42, 74, 0.1));
}

.lov-text h2 {
  margin-bottom: var(--space-md);
}

/* === METHODOLOGIE — Timeline / Étapes === */

.method-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  position: relative;
}

.method-steps::before {
  content: '';
  position: absolute;
  top: 24px;
  left: 5%;
  right: 5%;
  height: 2px;
  background: linear-gradient(to right, var(--gray-200), var(--accent), var(--gray-200));
  z-index: 0;
}

.method-step {
  position: relative;
  z-index: 1;
  background-color: var(--bg-primary);
  padding-top: 0;
}

.method-step .step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--navy);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
  margin: 0 auto var(--space-md) auto;
  border: 4px solid var(--bg-primary);
}

.method-step h4 {
  text-align: center;
  margin-bottom: var(--space-xs);
  font-size: 1.0625rem;
}

.method-step p {
  text-align: center;
  font-size: 0.875rem;
}

/* === CITATION / CALLOUT === */

.callout {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
  color: white;
  border-radius: 20px;
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
}

.callout::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  opacity: 0.15;
  transform: translate(50%, -50%);
}

.callout h2 {
  color: white;
  margin-bottom: var(--space-md);
}

.callout p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.125rem;
  max-width: 720px;
}

.callout .btn {
  margin-top: var(--space-lg);
  background-color: var(--gold);
  color: var(--navy);
}

.callout .btn:hover {
  background-color: #F3CB6E;
}

/* === VALEURS / ENGAGEMENTS LIST === */

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.value-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md) 0;
}

.value-marker {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent);
  margin-top: 0.5rem;
}

.value-content h4 {
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

.value-content p {
  font-size: 0.9375rem;
}

/* === CONTACT FORM === */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-2xl);
}

.contact-info {
  padding: var(--space-lg) 0;
}

.contact-info h3 {
  margin-bottom: var(--space-md);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  font-size: 0.9375rem;
}

.contact-info-item .label {
  font-weight: 600;
  color: var(--text-primary);
  min-width: 90px;
}

.contact-info-item .value {
  color: var(--text-secondary);
}

.contact-form {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: var(--space-xl);
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: border-color var(--duration-fast) var(--ease);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(46, 117, 182, 0.1);
}

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

/* === PROFILS-TYPES (Pour qui ?) === */

.personas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.persona-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: var(--space-lg);
  transition: all var(--duration) var(--ease);
}

.persona-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 20px 40px -10px rgba(46, 117, 182, 0.1);
}

.persona-card .persona-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background-color: rgba(46, 117, 182, 0.08);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  margin-bottom: var(--space-md);
}

.persona-card h4 {
  margin-bottom: var(--space-sm);
}

/* === ACTUALITÉS / NEWSLETTER === */

.newsletter-card {
  background: linear-gradient(135deg, var(--gray-100) 0%, var(--bg-card) 100%);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: var(--space-2xl);
  text-align: center;
}

[data-theme="dark"] .newsletter-card {
  background: linear-gradient(135deg, var(--bg-card) 0%, #131A2A 100%);
}

.newsletter-form {
  display: flex;
  gap: var(--space-sm);
  max-width: 480px;
  margin: var(--space-lg) auto 0 auto;
}

.newsletter-form input {
  flex: 1;
  padding: 0.875rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.9375rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

.newsletter-form input:focus {
  outline: none;
  border-color: var(--accent);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.article-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: all var(--duration) var(--ease);
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -10px rgba(16, 24, 40, 0.08);
}

.article-image {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, var(--navy) 0%, var(--accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.article-content {
  padding: var(--space-lg);
}

.article-meta {
  display: flex;
  gap: var(--space-sm);
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.article-card h4 {
  margin-bottom: var(--space-sm);
  font-size: 1.125rem;
}

.article-card p {
  font-size: 0.9375rem;
}

/* === FOOTER === */

.site-footer {
  background-color: var(--navy);
  color: var(--gray-300);
  padding: var(--space-2xl) 0 var(--space-lg) 0;
  margin-top: var(--space-3xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand h3 {
  color: white;
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.footer-brand p {
  color: var(--gray-400);
  font-size: 0.9375rem;
  max-width: 320px;
}

.footer-lov-mini {
  width: 60px;
  margin-top: var(--space-md);
  opacity: 0.6;
}

.footer-col h5 {
  color: white;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: var(--space-sm);
}

.footer-col ul li a {
  color: var(--gray-400);
  font-size: 0.9375rem;
  transition: color var(--duration-fast) var(--ease);
}

.footer-col ul li a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--gray-500);
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* === ANIMATIONS AU SCROLL === */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

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

/* === RESPONSIVE === */

@media (max-width: 1024px) {
  .hero-grid,
  .lov-section,
  .lov-section.reverse,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .hero-lov {
    max-width: 220px;
  }

  .pillars-grid,
  .personas-grid,
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .method-steps::before {
    display: none;
  }
}

@media (max-width: 768px) {
  section {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: var(--space-md);
    gap: var(--space-md);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .axes-grid,
  .pillars-grid,
  .personas-grid,
  .articles-grid,
  .values-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    gap: var(--space-lg);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}