/* Neural Trading — Cabinet de neurosciences cognitives humaines */
:root {
  --violet: #A78BFA;
  --slate: #94A3B8;
  --cream: #FAFAF9;
  --rose: #FBCFE8;
  --forest: #166534;
  --text: #1c1917;
  --text-muted: #57534e;
  --sidebar-width: 220px;
  --max-width: 1100px;
  --font-display: 'Spectral', Georgia, serif;
  --font-body: 'Source Serif 4', Georgia, serif;
  --font-ui: 'Inter', system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; font-size: 17px; }

body {
  font-family: var(--font-body);
  background: var(--cream);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a { color: var(--forest); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: #14532d; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.25;
  color: var(--text);
}

h1 { font-size: 2.1rem; margin-bottom: 1rem; }
h2 { font-size: 1.55rem; margin: 2rem 0 0.75rem; color: var(--forest); }
h3 { font-size: 1.2rem; margin: 1.5rem 0 0.5rem; }

p { margin-bottom: 1rem; }

ul, ol { margin: 0 0 1rem 1.4rem; }
li { margin-bottom: 0.35rem; }

/* Header */
.site-header {
  background: #fff;
  border-bottom: 2px solid var(--violet);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: calc(var(--max-width) + var(--sidebar-width) + 4rem);
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo span { color: var(--violet); }

.logo-tagline {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--slate);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
}

.main-nav a {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--text-muted);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--forest);
  border-bottom-color: var(--violet);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--slate);
  padding: 0.4rem 0.7rem;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  cursor: pointer;
  border-radius: 4px;
}

/* Layout */
.page-wrapper {
  flex: 1;
  max-width: calc(var(--max-width) + var(--sidebar-width) + 4rem);
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  width: 100%;
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

.main-content { flex: 1; min-width: 0; }

.neuro-sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  position: sticky;
  top: 5.5rem;
}

.sidebar-block {
  background: #fff;
  border-left: 3px solid var(--violet);
  padding: 1rem 0.9rem;
  margin-bottom: 1rem;
  font-size: 0.82rem;
  line-height: 1.55;
}

.sidebar-block h4 {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--violet);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.sidebar-block p { margin-bottom: 0.5rem; font-size: 0.82rem; }

.sidebar-ref {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--slate);
  font-style: italic;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, #fff 0%, var(--rose) 100%);
  border: 1px solid rgba(167, 139, 250, 0.3);
  padding: 2.5rem 2rem;
  margin-bottom: 2rem;
  border-radius: 2px;
}

.hero h1 { font-size: 2.4rem; max-width: 28ch; }

.hero-slogan {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--forest);
  margin: 1rem 0 1rem;
  max-width: 40ch;
}

.hero-lead {
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 1rem;
  max-width: 52ch;
}

.hero-lead strong {
  color: var(--violet);
}

.trust-strip {
  background: var(--violet);
  color: var(--ivory);
  padding: 0.75rem 1rem;
  margin: 0 0 2rem;
  font-size: 0.82rem;
}

.trust-strip span {
  display: inline-block;
  margin: 0.25rem 1rem 0.25rem 0;
  padding-right: 1rem;
  border-right: 1px solid rgba(250, 250, 249, 0.35);
}

.trust-strip span:last-child {
  border-right: none;
}

@media (max-width: 768px) {
  .trust-strip span {
    display: block;
    border-right: none;
    padding-right: 0;
  }
}

.hero-image {
  margin: 1.5rem 0;
  border: 1px solid var(--slate);
}

.hero-image figcaption {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--slate);
  padding: 0.5rem 0.75rem;
  background: #fff;
}

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: 2px;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: background 0.2s, transform 0.15s;
}

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

.btn-primary:hover {
  background: #14532d;
  color: #fff;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--violet);
  color: #fff;
}

.btn-secondary:hover {
  background: #8b5cf6;
  color: #fff;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--forest);
  color: var(--forest);
}

.btn-outline:hover { background: var(--forest); color: #fff; }

/* Cards & grids */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.card {
  background: #fff;
  border: 1px solid rgba(148, 163, 184, 0.4);
  padding: 1.25rem;
}

.card h3 { font-size: 1.05rem; margin-top: 0; }

.card-ref {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--violet);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.card img { margin-bottom: 0.75rem; }

/* Disclaimer box */
.disclaimer-box {
  background: #fff;
  border: 1px solid var(--slate);
  border-left: 4px solid var(--forest);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  font-size: 0.88rem;
  line-height: 1.65;
}

.disclaimer-box strong {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--forest);
  margin-bottom: 0.5rem;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
  padding: 1rem 0;
}

.faq-item h3 {
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin: 0;
}

.faq-item h3::after {
  content: '+';
  font-family: var(--font-ui);
  color: var(--violet);
  flex-shrink: 0;
}

.faq-item.open h3::after { content: '−'; }

.faq-answer {
  display: none;
  padding-top: 0.75rem;
  font-size: 0.95rem;
}

.faq-item.open .faq-answer { display: block; }

/* Forms */
.form-group { margin-bottom: 1.25rem; }

.form-group label {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--slate);
  border-radius: 2px;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  background: #fff;
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: 2px solid var(--violet);
  outline-offset: 1px;
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.form-check input { width: auto; margin-top: 0.25rem; }

.form-success, .form-error {
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-family: var(--font-ui);
  font-size: 0.9rem;
}

.form-success {
  background: #dcfce7;
  border: 1px solid var(--forest);
  color: var(--forest);
}

.form-error {
  background: #fef2f2;
  border: 1px solid #dc2626;
  color: #991b1b;
}

/* Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1rem 0;
}

.data-table th,
.data-table td {
  border: 1px solid rgba(148, 163, 184, 0.4);
  padding: 0.6rem 0.75rem;
  text-align: left;
}

.data-table th {
  background: rgba(167, 139, 250, 0.12);
  font-family: var(--font-ui);
  font-size: 0.8rem;
}

/* Footer */
.site-footer {
  background: #fff;
  border-top: 2px solid var(--violet);
  margin-top: auto;
}

.footer-inner {
  max-width: calc(var(--max-width) + var(--sidebar-width) + 4rem);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--violet);
  margin-bottom: 0.75rem;
}

.footer-col ul { list-style: none; margin: 0; }
.footer-col li { margin-bottom: 0.4rem; }

.footer-col a {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
}

.footer-col a:hover { color: var(--forest); text-decoration: underline; }

.footer-legal {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--slate);
  border-top: 1px solid rgba(148, 163, 184, 0.3);
  padding-top: 1.5rem;
  line-height: 1.6;
}

.footer-disclaimer {
  font-size: 0.75rem;
  margin-top: 1rem;
  padding: 1rem;
  background: var(--cream);
  border-left: 3px solid var(--forest);
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #fff;
  border-top: 3px solid var(--violet);
  padding: 1.25rem 1.5rem;
  z-index: 1000;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.08);
  display: none;
}

.cookie-banner.visible { display: block; }

.cookie-inner {
  max-width: calc(var(--max-width) + var(--sidebar-width) + 4rem);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.cookie-text {
  flex: 1;
  min-width: 280px;
  font-size: 0.88rem;
  line-height: 1.55;
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.cookie-actions button {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  padding: 0.5rem 1rem;
  border-radius: 2px;
  cursor: pointer;
  border: 1px solid var(--slate);
  background: #fff;
}

.cookie-actions .cookie-accept {
  background: var(--forest);
  color: #fff;
  border-color: var(--forest);
}

.cookie-actions .cookie-refuse {
  background: var(--cream);
}

/* 404 */
.error-page {
  text-align: center;
  padding: 3rem 1rem;
}

.error-page h1 { font-size: 2rem; color: var(--violet); }

.error-code {
  font-family: var(--font-ui);
  font-size: 5rem;
  font-weight: 700;
  color: var(--rose);
  line-height: 1;
  margin-bottom: 1rem;
}

/* Breadcrumb */
.breadcrumb {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--slate);
  margin-bottom: 1.5rem;
}

.breadcrumb a { color: var(--slate); text-decoration: none; }
.breadcrumb a:hover { color: var(--forest); }

/* Responsive */
@media (max-width: 900px) {
  .page-wrapper { flex-direction: column; }
  .neuro-sidebar {
    width: 100%;
    position: static;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
  }
  .sidebar-block { border-left: none; border-top: 3px solid var(--violet); }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 2px solid var(--violet);
    padding: 1rem 1.5rem;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0.5rem; }
  .header-inner { position: relative; flex-wrap: wrap; }
  h1 { font-size: 1.75rem; }
  .hero h1 { font-size: 1.85rem; }
}