/*
  Feuille de style moderne partagée par index.php, Formations.php et Youtube.php.
  Ne pas lier ce fichier depuis CV/, Linux/, japonaispourtous/, rollerpourtous/, Autre/ :
  ces sections restent sur leur propre style.

  Toutes les pages qui utilisent ce fichier doivent avoir <body class="modern-page">.
*/

/* ---------- Design tokens ---------- */
:root {
  --color-bg: #0f172a;
  --color-bg-alt: #0b1222;
  --color-surface: #1e293b;
  --color-surface-alt: #24314a;
  --color-border: #334155;

  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;

  --color-accent: #7c3aed;
  --color-accent-hover: #6d28d9;
  --color-accent-text: #c4b5fd;

  --color-cyan: #22d3ee;
  --color-cyan-text: #67e8f9;

  --color-danger: #dc2626;
  --color-danger-hover: #b91c1c;

  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 45px rgba(0, 0, 0, 0.45);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4.5rem;

  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-heading: "Space Grotesk", var(--font-body);

  --transition: 160ms ease;
  --navbar-height: 4rem;
}

/* ---------- Reset & base ---------- */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

body.modern-page {
  margin: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

.modern-page a {
  color: var(--color-accent-text);
  text-decoration: none;
}

.modern-page a:hover,
.modern-page a:focus-visible {
  text-decoration: underline;
}

/* Visible focus ring for keyboard navigation on every interactive element */
.modern-page a:focus-visible,
.modern-page button:focus-visible,
.modern-page .btn:focus-visible {
  outline: 3px solid var(--color-cyan);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.accent-text {
  color: var(--color-cyan-text);
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  top: -3rem;
  left: var(--space-3);
  z-index: 2000;
  background: var(--color-cyan);
  color: #04202a;
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  transition: top var(--transition);
}

.skip-link:focus {
  top: var(--space-3);
  text-decoration: none;
}

.archive-banner {
  background: var(--color-accent);
  color: #ffffff;
  text-align: center;
  font-size: 0.85rem;
  padding: var(--space-2) var(--space-3);
}

.archive-banner a {
  color: #ffffff;
  font-weight: 600;
  text-decoration: underline;
  margin-left: var(--space-2);
  white-space: nowrap;
}

/* ---------- Navbar (inc/menu.php) ---------- */
.site-navbar {
  background-color: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  min-height: var(--navbar-height);
}

.site-navbar-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--color-text) !important;
}

.site-navbar-brand .brand-accent {
  color: var(--color-cyan-text);
}

.site-navbar .nav-link {
  color: var(--color-text-muted) !important;
  font-weight: 500;
  padding: 0.5rem 0.9rem !important;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background-color var(--transition);
}

.site-navbar .nav-link:hover {
  color: var(--color-text) !important;
  background-color: var(--color-surface);
  text-decoration: none;
}

.site-navbar .nav-link.active {
  color: var(--color-text) !important;
  font-weight: 600;
  position: relative;
}

.site-navbar .nav-link.active::after {
  content: "";
  position: absolute;
  left: 0.9rem;
  right: 0.9rem;
  bottom: 0.15rem;
  height: 2px;
  background: var(--color-cyan);
  border-radius: var(--radius-pill);
}

.site-navbar .nav-link.disabled {
  color: #4b5563 !important;
  cursor: not-allowed;
}

.site-navbar .navbar-toggler {
  border-color: var(--color-border);
}

.site-navbar .navbar-toggler-icon {
  filter: invert(1) grayscale(1) brightness(1.6);
}

.dropdown-menu-modern {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
}

.dropdown-menu-modern .dropdown-item {
  color: var(--color-text-muted);
}

.dropdown-menu-modern .dropdown-item:hover,
.dropdown-menu-modern .dropdown-item:focus {
  background-color: var(--color-surface-alt);
  color: var(--color-text);
}

/* ---------- Layout ---------- */
#main-content {
  padding-top: calc(var(--navbar-height) + var(--space-4));
}

.modern-page section {
  padding-block: var(--space-6);
}

/* ---------- Social links bar ---------- */
.social-links {
  padding-block: var(--space-3);
}

.social-links ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted) !important;
  font-weight: 500;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.social-link i {
  font-size: 1.4rem;
}

.social-link:hover,
.social-link:focus-visible {
  color: var(--color-text) !important;
  background-color: var(--color-surface);
  text-decoration: none;
}

/* ---------- Hero (Intro.php) ---------- */
.hero-banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-muted);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-6);
}

.hero-banner-link {
  font-weight: 600;
  color: var(--color-cyan-text) !important;
}

h1 {
  font-size: clamp(2rem, 1.5rem + 2vw, 3.25rem);
  margin-bottom: var(--space-3);
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  max-width: 42ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.btn-home {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform var(--transition), background-color var(--transition), box-shadow var(--transition);
}

.btn-home:hover,
.btn-home:focus-visible {
  transform: translateY(-2px);
  text-decoration: none !important;
}

.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff !important;
  box-shadow: var(--shadow-sm);
}

.btn-accent:hover,
.btn-accent:focus-visible {
  background-color: var(--color-accent-hover);
  color: #ffffff !important;
}

.btn-danger-home {
  background-color: var(--color-danger);
  color: #ffffff !important;
  box-shadow: var(--shadow-sm);
}

.btn-danger-home:hover,
.btn-danger-home:focus-visible {
  background-color: var(--color-danger-hover);
  color: #ffffff !important;
}

.hero-newsletter h2 {
  font-size: 1.1rem;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.iframe-responsive {
  position: relative;
  width: 100%;
  max-width: 540px;
  aspect-ratio: 540 / 305;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.iframe-responsive iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.hero-media {
  position: relative;
}

.hero-media-photo {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: block;
}

.hero-media-mascot {
  position: absolute;
  bottom: -1.5rem;
  left: -1rem;
  width: 22%;
  min-width: 90px;
  filter: drop-shadow(var(--shadow-md));
}

/* ---------- Profile (Profil.php) ---------- */
.profile-section {
  border-top: 1px solid var(--color-border);
}

.profile-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}

.profile-photo {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  width: 248px;
  height: 238px;
  object-fit: cover;
  flex-shrink: 0;
}

.profile-content {
  flex: 1 1 320px;
  min-width: 0;
}

.profile-content h2 {
  font-size: 1.75rem;
  margin-bottom: var(--space-3);
}

.profile-content h3 {
  font-size: 1.15rem;
  color: var(--color-cyan-text);
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
}

.profile-content p {
  margin-bottom: var(--space-3);
}

.profile-list {
  list-style: none;
  margin: 0 0 var(--space-3);
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.profile-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  color: var(--color-text-muted);
}

.profile-list li i {
  color: var(--color-cyan-text);
  margin-top: 0.2em;
  flex-shrink: 0;
}

/* ---------- Footer (inc/footer.php) ---------- */
.site-footer {
  position: relative;
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-6) var(--space-5);
  margin-top: var(--space-6);
  color: var(--color-text-muted);
}

.footer-list,
.footer-social {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.footer-list li i,
.footer-social li i {
  color: var(--color-cyan-text);
  margin-right: var(--space-2);
}

.footer-social a {
  color: var(--color-text-muted) !important;
  display: inline-flex;
  align-items: center;
}

.footer-social a:hover,
.footer-social a:focus-visible {
  color: var(--color-text) !important;
}

.footer-bottom {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.back-to-top {
  position: fixed;
  right: var(--space-4);
  bottom: var(--space-4);
  width: 3rem;
  height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent);
  color: #ffffff !important;
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  z-index: 1000;
  transition: background-color var(--transition), transform var(--transition);
}

.back-to-top:hover,
.back-to-top:focus-visible {
  background-color: var(--color-accent-hover);
  transform: translateY(-3px);
  text-decoration: none !important;
}

/* ---------- Page header (Formations.php / Youtube.php titles) ---------- */
.page-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.page-header .page-icon {
  font-size: 3rem;
  color: var(--color-cyan-text);
}

.lead {
  color: var(--color-text-muted);
}

.modern-page hr {
  border-color: var(--color-border);
  opacity: 1;
  margin-block: var(--space-5);
}

/* ---------- Bootstrap component theming (cards, boutons, alertes) ---------- */
.modern-page .card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
}

.modern-page .card.bg-primary-subtle,
.modern-page .card.bg-success-subtle {
  background-color: var(--color-surface) !important;
}

.modern-page .card-title {
  color: var(--color-text);
}

.modern-page .card-text {
  color: var(--color-text-muted);
}

.modern-page .btn-primary {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #ffffff;
}

.modern-page .btn-primary:hover,
.modern-page .btn-primary:focus-visible {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.modern-page .btn-danger {
  background-color: var(--color-danger);
  border-color: var(--color-danger);
}

.modern-page .btn-danger:hover,
.modern-page .btn-danger:focus-visible {
  background-color: var(--color-danger-hover);
  border-color: var(--color-danger-hover);
}

.modern-page .alert {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.modern-page .alert-danger {
  border-color: var(--color-danger);
}

.modern-page .text-dark {
  color: var(--color-text) !important;
}

.modern-page .bg-white,
.modern-page .bg-light,
.modern-page .bg-body-tertiary {
  background-color: var(--color-surface) !important;
  color: var(--color-text);
}

/* Onglets Formations.php */
.modern-page .nav-pills .nav-link {
  color: var(--color-text-muted);
  border-radius: var(--radius-pill);
}

.modern-page .nav-pills .nav-link:hover {
  color: var(--color-text);
}

.modern-page .nav-pills .nav-link.active {
  background-color: var(--color-accent);
  color: #ffffff;
}

.modern-page .tab-content {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-top: var(--space-3);
}

/* Lecteur vidéo YouTube (Youtube.php) */
.modern-page .ratio {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

/* ---------- Responsive tweaks ---------- */
@media (max-width: 991.98px) {
  .site-navbar .navbar-collapse {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    margin-top: var(--space-2);
  }
}

@media (max-width: 767.98px) {
  .profile-card {
    padding: var(--space-4);
  }

  .profile-photo {
    width: 100%;
    height: auto;
    max-width: 248px;
    margin: 0 auto;
  }

  .back-to-top {
    right: var(--space-3);
    bottom: var(--space-3);
  }
}
