/* Variables BikerTribe */
:root {
  --bt-orange: #FF6B35;
  --bt-bg: #0D1117;
  --bt-surface: #161B22;
  --bt-surface-variant: #21262D;
  --bt-text: #FFFFFF;
  --bt-text-secondary: #8B949E;
  --bt-radius: 12px;
  --bt-max-width: 960px;
  --bt-spacing: 1.5rem;
  --bt-font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--bt-font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--bt-text);
  background-color: var(--bt-bg);
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: var(--bt-max-width);
  margin: 0 auto;
  padding: 0 var(--bt-spacing);
}

.container--center {
  text-align: center;
}

/* Hero */
.hero {
  padding: 3rem 1.5rem 4rem;
  text-align: center;
  background: linear-gradient(180deg, var(--bt-surface) 0%, var(--bt-bg) 100%);
}

.hero-inner {
  max-width: 480px;
  margin: 0 auto;
}

.logo-wrap {
  margin-bottom: 1rem;
}

.logo-wrap img,
.logo-wrap .logo-img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  border-radius: var(--bt-radius);
  display: block;
  margin: 0 auto;
}

.logo-svg {
  width: 120px;
  height: 120px;
  margin: 0 auto;
  display: block;
}

.brand {
  margin: 0 0 0.25rem;
  font-size: clamp(2rem, 6vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-biker {
  color: var(--bt-text);
}

.brand-tribe {
  color: var(--bt-orange);
}

.slogan {
  margin: 0;
  font-size: 1.125rem;
  color: var(--bt-text-secondary);
}

/* Sections */
.section {
  padding: 3rem 0;
}

.section h2 {
  margin: 0 0 1.25rem;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--bt-orange);
}

.section-intro {
  background: var(--bt-bg);
}

.intro-text {
  margin: 0 auto;
  max-width: 56ch;
  color: var(--bt-text-secondary);
  font-size: 1.0625rem;
}

.section-features {
  background: var(--bt-surface);
}

.section-features .container--center {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--bt-spacing);
  margin-top: 1.5rem;
  width: 100%;
}

.feature-card {
  padding: 1.5rem;
  background: var(--bt-surface-variant);
  border: 1px solid rgba(255, 107, 53, 0.15);
  border-radius: var(--bt-radius);
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  border-color: rgba(255, 107, 53, 0.4);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.feature-card:focus-visible {
  outline: 2px solid var(--bt-orange);
  outline-offset: 2px;
}

.feature-card-hint {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  color: var(--bt-orange);
  opacity: 0.9;
}

.feature-icon {
  display: block;
  font-size: 2rem;
  margin-bottom: 0.75rem;
  line-height: 1;
}

.feature-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--bt-text);
}

.feature-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--bt-text-secondary);
}

.section-videos {
  background: var(--bt-bg);
}

.videos-intro {
  margin: 0 0 1.5rem;
  color: var(--bt-text-secondary);
}

.videos-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 1rem;
  width: 100%;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.video-wrap {
  width: 100%;
}

.video-aspect {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  background: var(--bt-surface-variant);
  border-radius: var(--bt-radius);
  overflow: hidden;
  border: 1px solid rgba(255, 107, 53, 0.2);
}

.video-aspect iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-caption {
  margin: 0.5rem 0 0;
  font-size: 0.9375rem;
  color: var(--bt-text-secondary);
}

.section-cta {
  background: var(--bt-bg);
}

.cta-intro {
  margin: 0 0 1.5rem;
  color: var(--bt-text-secondary);
}

.cta-buttons {
  margin-bottom: 2rem;
}

.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--bt-radius);
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
}

.btn:focus-visible {
  outline: 2px solid var(--bt-orange);
  outline-offset: 2px;
}

.btn-primary {
  color: #fff;
  background-color: var(--bt-orange);
  border: none;
}

.btn-primary:hover {
  background-color: #e85a2b;
}

.btn-primary:active {
  transform: scale(0.98);
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  justify-content: center;
  align-items: center;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--bt-text);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.75rem 1.25rem;
  background: var(--bt-surface-variant);
  border: 1px solid rgba(255, 107, 53, 0.2);
  border-radius: var(--bt-radius);
  transition: color 0.2s, background-color 0.2s, border-color 0.2s, transform 0.1s;
}

.social-link:hover {
  color: var(--bt-orange);
  background: var(--bt-surface);
  border-color: var(--bt-orange);
  transform: translateY(-2px);
}

.social-link:active {
  transform: translateY(0);
}

.social-link:focus-visible {
  outline: 2px solid var(--bt-orange);
  outline-offset: 2px;
}

.social-icon {
  display: inline-flex;
  flex-shrink: 0;
}

.social-icon svg {
  width: 22px;
  height: 22px;
  vertical-align: middle;
}

.social-link:hover .social-icon svg {
  color: var(--bt-orange);
}

/* Footer */
.footer {
  padding: 2rem 0;
  background: var(--bt-surface);
  text-align: center;
}

.footer p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--bt-text-secondary);
}

/* Responsive: tablette */
@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .videos-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 960px;
  }

  .cta-buttons .btn {
    min-width: 260px;
  }
}

/* Modal captures */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}

.modal.is-open {
  opacity: 1;
  visibility: visible;
}

.modal[aria-hidden="true"] {
  opacity: 0;
  visibility: hidden;
}

.modal[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  cursor: pointer;
}

.modal-box {
  position: relative;
  width: 100%;
  max-width: 420px;
  max-height: 90vh;
  background: var(--bt-surface);
  border-radius: var(--bt-radius);
  border: 1px solid rgba(255, 107, 53, 0.25);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--bt-surface-variant);
  flex-shrink: 0;
}

.modal-title {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--bt-orange);
}

.modal-close {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--bt-text-secondary);
  background: none;
  border: none;
  border-radius: var(--bt-radius);
  cursor: pointer;
  transition: color 0.2s, background-color 0.2s;
}

.modal-close:hover {
  color: var(--bt-text);
  background: var(--bt-surface-variant);
}

.modal-close:focus-visible {
  outline: 2px solid var(--bt-orange);
  outline-offset: 2px;
}

.modal-body {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem;
  min-height: 0;
  flex: 1;
}

.modal-nav {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  font-size: 1.25rem;
  color: var(--bt-text);
  background: var(--bt-surface-variant);
  border: 1px solid rgba(255, 107, 53, 0.2);
  border-radius: var(--bt-radius);
  cursor: pointer;
  transition: color 0.2s, background-color 0.2s, border-color 0.2s;
}

.modal-nav:hover:not(:disabled) {
  color: var(--bt-orange);
  border-color: var(--bt-orange);
  background: var(--bt-surface);
}

.modal-nav:focus-visible {
  outline: 2px solid var(--bt-orange);
  outline-offset: 2px;
}

.modal-nav[hidden] {
  display: none !important;
}

.modal-slide {
  flex: 1;
  min-width: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--bt-bg);
  border-radius: var(--bt-radius);
}

.modal-img {
  max-width: 100%;
  max-height: 60vh;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
  border-radius: 4px;
}

.modal-footer {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--bt-surface-variant);
  text-align: center;
  flex-shrink: 0;
}

.modal-counter {
  font-size: 0.875rem;
  color: var(--bt-text-secondary);
}

@media (min-width: 640px) {
  .modal-box {
    max-width: 520px;
  }

  .modal-img {
    max-height: 70vh;
  }
}

/* Responsive: desktop */
@media (min-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .section {
    padding: 4rem 0;
  }

  .hero {
    padding: 4rem 1.5rem 5rem;
  }
}