/* =======================================================
   Yol'Erdre 2027 — Charte graphique alignée sur canantes.com
   Bleu #005BA5 et rouge #F31424 relevés directement sur le logo
   officiel du Cercle de l'Aviron de Nantes ; fond gris-bleu clair
   et typographie proches du site institutionnel.
   ======================================================= */

:root {
    --color-ink: #10253D;
    --color-deep: #00488C;
    --color-deep-2: #002F5C;
    --color-mid: #005BA5;
    --color-bg: #F2F5F9;
    --color-surface: #FFFFFF;
    --color-accent: #F31424;
    --color-accent-dark: #C20F1D;
    --color-line: #DBE3ED;
    --color-line-deep: rgba(242, 245, 249, 0.18);
    --font-display: "Montserrat", "Arial Black", Arial, sans-serif;
    --font-accent: "Public Sans", cursive;
    --font-body: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --max-width: 1120px;
    --radius: 10px;
    --shadow-soft: 0 12px 30px -18px rgba(0, 72, 140, 0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 0.5em;
  color: var(--color-deep);
}

h2 { font-size: clamp(1.7rem, 1.2rem + 1.8vw, 2.5rem); max-width: 22ch; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; max-width: 62ch; }
a { color: inherit; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-deep);
  color: #fff;
  padding: 10px 16px;
  z-index: 1000;
}
.skip-link:focus { left: 12px; top: 12px; }

.kicker {
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--color-mid);
  margin: 0 0 0.6em;
  font-weight: 600;
}
.kicker-light {
  color: var(--color-accent);
  font-family: var(--font-accent);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1.5px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-accent {
  background: var(--color-accent);
  color: #FFFFFF;
  box-shadow: var(--shadow-soft);
}
.btn-accent:hover { background: var(--color-accent-dark); }
.btn-ghost {
  background: transparent;
  border-color: rgba(242, 245, 249, 0.55);
  color: var(--color-bg);
}
.btn-ghost:hover { background: rgba(242, 245, 249, 0.12); }
.btn-small { padding: 9px 18px; font-size: 0.85rem; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--color-line);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--color-deep);
  margin-right: auto;
}
.brand-mark { display: inline-flex; color: var(--color-accent); }
.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
}

.main-nav {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
}
.main-nav a {
  text-decoration: none;
  color: var(--color-ink);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover { border-color: var(--color-accent); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-deep);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* Language switch */
.lang-switch { position: relative; }
.lang-current {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1.5px solid var(--color-line);
  border-radius: 999px;
  padding: 7px 12px;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-deep);
  cursor: pointer;
}
.lang-menu {
  list-style: none;
  margin: 0;
  padding: 6px;
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  background: var(--color-surface);
  border-radius: 10px;
  box-shadow: 0 14px 34px -12px rgba(16, 37, 61, 0.35);
  min-width: 150px;
  display: none;
}
.lang-menu.is-open { display: block; }
.lang-menu button {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 9px 10px;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--color-ink);
}
.lang-menu button:hover { background: var(--color-bg); }
.lang-menu button.is-active { color: var(--color-accent-dark); font-weight: 700; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  background: linear-gradient(180deg, var(--color-deep) 0%, var(--color-deep-2) 100%);
  color: var(--color-bg);
  overflow: hidden;
  padding: 96px 0 110px;
}
.hero-river { position: absolute; inset: 0; }
.hero-river svg { width: 100%; height: 100%; }
.hero-inner { position: relative; z-index: 1; max-width: 720px; }

.hero-title {
  font-size: clamp(3rem, 2.2rem + 5vw, 5.6rem);
  color: var(--color-bg);
  margin-bottom: 0.15em;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.28em;
}
.hero-year {
  font-size: 0.36em;
  color: var(--color-accent);
  font-weight: 500;
}
.hero-tagline {
  font-size: 1.15rem;
  color: rgba(239, 235, 221, 0.86);
  max-width: 48ch;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin: 22px 0 34px;
  font-size: 0.95rem;
}
.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-bg);
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- Sections ---------- */

.section { padding: 84px 0; }
.section-alt { background: #EBF1F8; }
.section-deep {
  background: var(--color-deep);
  color: var(--color-bg);
}
.on-deep { color: var(--color-bg); }
.on-deep-muted { color: rgba(242, 245, 249, 0.78); }
.section-lead { max-width: 60ch; color: var(--color-mid); }

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  align-items: start;
}
.price-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 28px;
}
.price-label { margin: 0; font-size: 0.85rem; color: var(--color-mid); font-weight: 600; }
.price-value {
  font-family: var(--font-display);
  font-size: 2.6rem;
  color: var(--color-accent-dark);
  margin: 4px 0 10px;
}
.price-detail { margin: 0; font-size: 0.92rem; color: var(--color-ink); }

/* Featured photos */
.featured-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  grid-template-rows: auto auto;
  gap: 18px;
  margin-top: 32px;
}
.featured-grid .photo-slot--tall { grid-row: span 2; }

.photo-slot {
  border: 1.5px dashed var(--color-line);
  border-radius: var(--radius);
  background: repeating-linear-gradient(135deg, #EBF1F8, #EBF1F8 10px, #DEE8F3 10px, #DEE8F3 20px);
  min-height: 190px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--color-mid);
  margin: 0;
}
.photo-slot-icon { display: inline-flex; opacity: 0.7; }
.photo-slot figcaption {
  font-size: 0.85rem;
  font-weight: 600;
}

/* Route */
.route-diagram-wrap { margin-top: 40px; }
.route-diagram { width: 100%; height: auto; margin-bottom: 12px; }
.route-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px 20px;
}
.route-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 0.92rem;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-line-deep);
}
.route-index {
  font-family: var(--font-display);
  color: var(--color-accent);
  font-weight: 600;
  min-width: 1.4em;
}
.route-tag {
  font-size: 0.7rem;
  text-transform: none;
  background: var(--color-accent);
  color: #FFFFFF;
  border-radius: 999px;
  padding: 3px 10px;
  font-weight: 700;
  white-space: nowrap;
}
.route-tag--port { background: var(--color-mid); color: var(--color-bg); }

/* Schedule */
.schedule-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 32px;
}
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline-item {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--color-line);
}
.timeline-item:first-child { border-top: none; }
.timeline-time {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-accent-dark);
  font-size: 0.95rem;
}
.timeline-text { font-size: 0.95rem; }

/* Welcome cards */
.welcome-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.welcome-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 22px;
}
.welcome-card h3 { font-size: 1.05rem; margin-bottom: 0.4em; }
.welcome-card p { font-size: 0.92rem; margin: 0; }

/* Carousel */
.carousel {
  position: relative;
  margin-top: 32px;
  border-radius: var(--radius);
  overflow: hidden;
}
.carousel-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.carousel-slide {
  min-width: 100%;
}
.photo-slot--carousel { min-height: 340px; border-radius: 0; border: none; }
.carousel-caption {
  background: rgba(16, 37, 61, 0.85);
  color: var(--color-bg);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  margin: 0;
}
.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.85);
  color: var(--color-deep);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.carousel-arrow--prev { left: 14px; }
.carousel-arrow--next { right: 14px; }
.carousel-dots {
  position: absolute;
  bottom: 14px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 8px;
}
.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.55);
  cursor: pointer;
  padding: 0;
}
.carousel-dot.is-active { background: var(--color-accent); width: 22px; border-radius: 999px; }

/* Testimonials */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.testimonial-card {
  background: rgba(242, 245, 249, 0.07);
  border: 1px solid var(--color-line-deep);
  border-radius: var(--radius);
  padding: 26px;
  margin: 0;
}
.testimonial-card blockquote {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  line-height: 1.45;
  color: var(--color-bg);
}
.testimonial-card figcaption { display: flex; flex-direction: column; gap: 2px; }
.testimonial-name { font-weight: 700; color: var(--color-accent); }
.testimonial-meta { font-size: 0.82rem; color: rgba(242, 245, 249, 0.65); }

/* Related sites */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.related-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
  text-decoration: none;
  color: var(--color-ink);
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.related-card:hover { box-shadow: var(--shadow-soft); transform: translateY(-2px); }
.related-icon { color: var(--color-accent-dark); }
.related-card h3 { margin-bottom: 0.2em; }
.related-card p { font-size: 0.92rem; margin-bottom: 0.4em; }
.related-cta { font-weight: 700; font-size: 0.88rem; color: var(--color-accent-dark); }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
}
.contact-organizer { font-weight: 600; color: var(--color-mid); }
.contact-list { list-style: none; margin: 0; padding: 0; }
.contact-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 0;
  border-top: 1px solid var(--color-line);
}
.contact-list li:first-child { border-top: none; }
.contact-label { font-size: 0.78rem; font-weight: 700; color: var(--color-mid); }
.contact-list a { text-decoration: none; font-weight: 600; }
.contact-list a:hover { text-decoration: underline; }

/* Footer */
.site-footer {
  background: var(--color-ink);
  color: rgba(239, 235, 221, 0.85);
  padding-top: 48px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(242, 245, 249, 0.14);
}
.brand--footer { color: var(--color-bg); margin-bottom: 8px; }
.footer-tagline { max-width: 40ch; font-size: 0.9rem; color: rgba(242, 245, 249, 0.65); }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a { text-decoration: none; font-size: 0.92rem; color: rgba(242, 245, 249, 0.85); }
.footer-links a:hover { color: var(--color-accent); }
.footer-bottom {
  padding: 18px 24px;
  font-size: 0.8rem;
  color: rgba(242, 245, 249, 0.5);
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .welcome-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: 1fr; }
  .schedule-grid { grid-template-columns: 1fr; gap: 28px; }
  .featured-grid { grid-template-columns: 1fr; }
  .featured-grid .photo-slot--tall { grid-row: auto; }
  .route-list { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
    border-bottom: 1px solid var(--color-line);
  }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 12px 0; border-bottom: 1px solid var(--color-line); }
  .nav-toggle { display: flex; }
  .btn-small { display: none; }
  .route-list { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .welcome-grid { grid-template-columns: 1fr; }
  .hero { padding: 72px 0 84px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .carousel-track { transition: none; }
  .btn:hover { transform: none; }
}

/* Focus visibility */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}