/* ================================================================
   CORICH IET — Global Stylesheet
   Fichier : static/css/corich.css
   Dépendances : Bootstrap 5, Font Awesome 6, Poppins + Lato (Google Fonts)
================================================================ */

/* ────────────────────────────────────────────────────────────────
   1. VARIABLES CSS (charte graphique CORICH)
──────────────────────────────────────────────────────────────── */
:root {
  /* Couleurs CORICH */
  --c-green:        #82be60;
  --c-blue:         #36a2ce;
  --c-purple:       #4e2b86;
  --c-navy:         #1a1d3b;
  --c-navy-light:   #2d3561;

  /* Nuances douces */
  --c-light:        #f7f9fc;
  --c-light-green:  #f0f7ea;
  --c-light-blue:   #e8f5fc;
  --c-light-purple: #f0edf8;
  --c-muted:        #6b7280;
  --c-border:       #e5e7eb;
  --c-white:        #ffffff;

  /* Dégradés */
  --grad-main:  linear-gradient(135deg, var(--c-blue) 0%, var(--c-purple) 100%);
  --grad-green: linear-gradient(135deg, var(--c-green) 0%, var(--c-blue) 100%);
  --grad-full:  linear-gradient(135deg, var(--c-green), var(--c-blue), var(--c-purple));
  --grad-dark:  linear-gradient(135deg, var(--c-navy) 0%, #2d1f5e 100%);

  /* Ombres */
  --shadow-sm:  0 2px 8px  rgba(78,43,134,.08);
  --shadow-md:  0 8px 30px rgba(78,43,134,.12);
  --shadow-lg:  0 20px 60px rgba(78,43,134,.16);
  --shadow-btn: 0 8px 25px rgba(78,43,134,.35);

  /* Typographie */
  --font-heading: 'Poppins', sans-serif;
  --font-body:    'Lato', sans-serif;

  /* Transitions */
  --t-fast:   .18s ease;
  --t-normal: .28s ease;
  --t-slow:   .45s ease;

  /* Border-radius */
  --r-sm:   8px;
  --r-md:   14px;
  --r-lg:   22px;
  --r-xl:   32px;
  --r-pill: 50px;
}

/* ────────────────────────────────────────────────────────────────
   2. RESET & BASE
──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--c-navy);
  background: var(--c-white);
  overflow-x: hidden;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--c-navy);
}

a { color: var(--c-blue); text-decoration: none; }
a:hover { color: var(--c-purple); }

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

/* ────────────────────────────────────────────────────────────────
   3. UTILITAIRES CORICH
──────────────────────────────────────────────────────────────── */

/* Texte dégradé */
.gradient-text {
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gradient-text-full {
  background: var(--grad-full);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Section label */
.section-label {
  font-family: var(--font-heading);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-blue);
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 12px;
}
.section-label::before {
  content: '';
  display: inline-block;
  width: 22px;
  height: 2px;
  background: var(--c-blue);
  border-radius: 2px;
  flex-shrink: 0;
}

/* Titres de section */
.section-title {
  font-size: clamp(1.7rem, 3.5vw, 2.6rem);
  font-weight: 800;
  line-height: 1.18;
  color: var(--c-navy);
  margin-bottom: 14px;
}

.section-sub {
  font-size: 1.03rem;
  color: var(--c-muted);
  line-height: 1.78;
  max-width: 560px;
}

/* Fade-up animations (activées par IntersectionObserver dans main.js) */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Pulse dot */
@keyframes corich-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.8); }
}
.pulse-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  animation: corich-pulse 1.8s infinite;
}

/* Tags */
.tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: .63rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: var(--r-pill);
}
.tag-cdi    { background: rgba(130,190,96,.15); color: #3a7020; }
.tag-cdd    { background: rgba(54,162,206,.15);  color: #155e7a; }
.tag-stage  { background: rgba(78,43,134,.12);   color: var(--c-purple); }
.tag-interim{ background: rgba(245,158,11,.12);  color: #92400e; }

/* ────────────────────────────────────────────────────────────────
   4. BOUTONS GLOBAUX
──────────────────────────────────────────────────────────────── */

/* Primaire (dégradé bleu → violet) */
.btn-corich-primary {
  background: var(--grad-main);
  color: #fff !important;
  border: none;
  border-radius: var(--r-pill);
  padding: 13px 34px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: .92rem;
  box-shadow: var(--shadow-btn);
  transition: transform var(--t-fast), box-shadow var(--t-fast), opacity var(--t-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.btn-corich-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(78,43,134,.45);
  opacity: .93;
}
.btn-corich-primary:active { transform: translateY(0); }

/* Secondaire outline */
.btn-corich-outline {
  background: transparent;
  color: var(--c-purple);
  border: 2px solid var(--c-purple);
  border-radius: var(--r-pill);
  padding: 11px 30px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: .92rem;
  transition: all var(--t-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.btn-corich-outline:hover {
  background: var(--c-purple);
  color: #fff !important;
}

/* Blanc (pour fonds foncés) */
.btn-corich-white {
  background: #fff;
  color: var(--c-purple) !important;
  border: none;
  border-radius: var(--r-pill);
  padding: 13px 34px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .92rem;
  box-shadow: 0 4px 16px rgba(0,0,0,.15);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.btn-corich-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,0,0,.22);
  color: var(--c-purple) !important;
}

/* Outline blanc */
.btn-corich-white-outline {
  background: transparent;
  color: #fff !important;
  border: 2px solid rgba(255,255,255,.55);
  border-radius: var(--r-pill);
  padding: 11px 30px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: .92rem;
  transition: all var(--t-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.btn-corich-white-outline:hover {
  background: rgba(255,255,255,.15);
  border-color: rgba(255,255,255,.9);
  color: #fff !important;
}

/* ────────────────────────────────────────────────────────────────
   5. NAVBAR
──────────────────────────────────────────────────────────────── */
.navbar-corich {
  position: sticky;
  top: 0;
  z-index: 1050;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(78,43,134,.07);
  transition: box-shadow var(--t-normal);
}
.navbar-corich.scrolled {
  box-shadow: 0 4px 28px rgba(78,43,134,.1);
}

.navbar-container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 28px;
  position: relative;
}

/* Logo */
.navbar-brand-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.navbar-brand-logo img {
  height: 50px;
  width: auto;
}

/* Liens nav */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
}
.nav-links li a {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: .82rem;
  color: var(--c-navy);
  padding: 7px 12px;
  border-radius: var(--r-sm);
  transition: color var(--t-fast), background var(--t-fast);
  white-space: nowrap;
  display: block;
}
.nav-links li a:hover,
.nav-links li a.active {
  color: var(--c-purple);
  background: var(--c-light-purple);
}

/* Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* Boutons navbar */
.btn-nav-login {
  font-family: var(--font-heading);
  font-size: .8rem;
  font-weight: 600;
  border: 1.5px solid var(--c-purple);
  color: var(--c-purple);
  background: transparent;
  border-radius: var(--r-pill);
  padding: 8px 20px;
  transition: all var(--t-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-nav-login:hover {
  background: var(--c-purple);
  color: #fff !important;
}

.btn-nav-register {
  font-family: var(--font-heading);
  font-size: .8rem;
  font-weight: 600;
  background: var(--grad-main);
  color: #fff !important;
  border: none;
  border-radius: var(--r-pill);
  padding: 8px 20px;
  transition: opacity var(--t-fast), transform var(--t-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-nav-register:hover {
  opacity: .88;
  transform: translateY(-1px);
  color: #fff !important;
}

/* Hamburger */
.navbar-toggler {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
  flex-direction: column;
  gap: 5px;
}
.toggler-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-navy);
  border-radius: 2px;
  transition: all var(--t-fast);
}
.navbar-toggler.open .toggler-bar:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.navbar-toggler.open .toggler-bar:nth-child(2) { opacity: 0; }
.navbar-toggler.open .toggler-bar:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Menu utilisateur connecté */
.nav-user-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: var(--r-md);
  transition: background var(--t-fast);
  position: relative;
}
.nav-user-menu:hover { background: var(--c-light); }

.nav-user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--grad-main);
  color: #fff;
  font-family: var(--font-heading);
  font-size: .78rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.nav-user-name {
  font-family: var(--font-heading);
  font-size: .84rem;
  font-weight: 600;
  color: var(--c-navy);
}
.nav-user-arrow {
  font-size: .65rem;
  color: var(--c-muted);
  transition: transform var(--t-fast);
}
.nav-user-menu.open .nav-user-arrow { transform: rotate(180deg); }

/* Dropdown utilisateur */
.nav-user-dropdown {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  width: 240px;
  background: #fff;
  border-radius: var(--r-md);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-lg);
  padding: 10px 0;
  display: none;
  z-index: 1100;
}
.nav-user-dropdown.open { display: block; animation: dropDown .2s ease; }
@keyframes dropDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.nav-user-info {
  padding: 10px 16px 12px;
}
.nav-user-full {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .92rem;
  color: var(--c-navy);
}
.nav-user-role {
  font-size: .75rem;
  color: var(--c-muted);
  margin-top: 2px;
}
.nav-dropdown-divider {
  height: 1px;
  background: var(--c-border);
  margin: 6px 0;
}
.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-size: .88rem;
  color: var(--c-navy);
  transition: background var(--t-fast), color var(--t-fast);
}
.nav-dropdown-item:hover {
  background: var(--c-light);
  color: var(--c-purple);
}
.nav-dropdown-item i { width: 16px; color: var(--c-blue); }
.nav-dropdown-logout { color: #dc2626 !important; }
.nav-dropdown-logout i { color: #dc2626 !important; }

/* Mobile drawer */
.nav-mobile-drawer {
  display: none;
  padding: 16px 24px 24px;
  border-top: 1px solid var(--c-border);
  background: #fff;
}
.nav-mobile-drawer.open { display: block; }

.nav-mobile-links {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
}
.nav-mobile-links li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 4px;
  font-family: var(--font-heading);
  font-size: .9rem;
  font-weight: 500;
  color: var(--c-navy);
  border-bottom: 1px solid var(--c-border);
  transition: color var(--t-fast);
}
.nav-mobile-links li a i { width: 18px; color: var(--c-blue); }
.nav-mobile-links li a:hover { color: var(--c-purple); }

.nav-mobile-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.nav-mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.3);
  z-index: 1040;
}
.nav-mobile-overlay.open { display: block; }

/* Responsive navbar */
@media (max-width: 1199px) {
  .nav-links li a { font-size: .78rem; padding: 7px 9px; }
}
@media (max-width: 991px) {
  .nav-links,
  .nav-actions { display: none; }
  .navbar-toggler { display: flex; }
}

/* ────────────────────────────────────────────────────────────────
   6. MESSAGES DJANGO
──────────────────────────────────────────────────────────────── */
.messages-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 2000;
  width: 360px;
  max-width: calc(100vw - 40px);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.corich-alert {
  border: none;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-md);
  padding: 14px 18px;
  font-size: .9rem;
}
.corich-alert.alert-success  { background: #f0fdf4; color: #166534; border-left: 4px solid var(--c-green); }
.corich-alert.alert-danger   { background: #fef2f2; color: #991b1b; border-left: 4px solid #ef4444; }
.corich-alert.alert-warning  { background: #fffbeb; color: #92400e; border-left: 4px solid #f59e0b; }
.corich-alert.alert-info     { background: #eff6ff; color: #1e40af; border-left: 4px solid var(--c-blue); }

/* ────────────────────────────────────────────────────────────────
   7. BOUTON RETOUR EN HAUT
──────────────────────────────────────────────────────────────── */
.back-to-top-btn {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--grad-main);
  color: #fff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .95rem;
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(78,43,134,.4);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .3s, transform .3s;
  z-index: 999;
}
.back-to-top-btn.visible {
  opacity: 1;
  transform: translateY(0);
}
.back-to-top-btn:hover { transform: translateY(-3px); }

/* ────────────────────────────────────────────────────────────────
   8. FOOTER
──────────────────────────────────────────────────────────────── */
.footer {
  background: #0f1128;
  color: rgba(255,255,255,.55);
}

.footer-top {
  padding: 72px 0 52px;
}

/* Logo */
.footer-brand { display: inline-block; margin-bottom: 16px; }
.footer-logo  { height: 46px; width: auto; }

.footer-tagline {
  font-size: .88rem;
  line-height: 1.72;
  color: rgba(255,255,255,.48);
  max-width: 270px;
  margin-bottom: 22px;
}

/* Réseaux */
.footer-social { display: flex; gap: 10px; }
.social-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.5);
  font-size: .85rem;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}
.social-btn:hover {
  background: var(--c-blue);
  color: #fff !important;
  border-color: var(--c-blue);
}

/* Colonnes */
.footer-col-title {
  font-family: var(--font-heading);
  font-size: .9rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: .02em;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li { margin-bottom: 11px; }
.footer-links a {
  font-size: .85rem;
  color: rgba(255,255,255,.48);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color var(--t-fast), gap var(--t-fast);
}
.footer-links a::before {
  content: '';
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--c-blue);
  opacity: .5;
  flex-shrink: 0;
  transition: opacity var(--t-fast);
}
.footer-links.footer-contact a::before { display: none; }
.footer-links a:hover {
  color: var(--c-blue) !important;
  gap: 12px;
}
.footer-links a:hover::before { opacity: 1; }

.fc-icon {
  width: 20px;
  color: var(--c-blue);
  flex-shrink: 0;
  font-size: .85rem;
}

/* Barre du bas */
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07);
  padding: 22px 0;
}
.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.footer-copyright {
  font-size: .78rem;
  color: rgba(255,255,255,.28);
}
.footer-legal-links {
  display: flex;
  align-items: center;
  gap: 16px;
}
.footer-legal-links a {
  font-size: .78rem;
  color: rgba(255,255,255,.28);
  transition: color var(--t-fast);
}
.footer-legal-links a:hover { color: rgba(255,255,255,.6) !important; }
.footer-sep { color: rgba(255,255,255,.15); }

/* ────────────────────────────────────────────────────────────────
   9. BREADCRUMB
──────────────────────────────────────────────────────────────── */
.corich-breadcrumb {
  background: var(--c-light);
  padding: 14px 0;
  border-bottom: 1px solid var(--c-border);
}
.corich-breadcrumb .breadcrumb {
  margin: 0;
  font-size: .82rem;
}
.corich-breadcrumb .breadcrumb-item a {
  color: var(--c-blue);
}
.corich-breadcrumb .breadcrumb-item.active {
  color: var(--c-muted);
}
.corich-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
  content: '›';
  color: var(--c-muted);
}

/* ────────────────────────────────────────────────────────────────
   10. FORMULAIRES GLOBAUX
──────────────────────────────────────────────────────────────── */
.corich-form .form-control,
.corich-form .form-select {
  border: 1.5px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: .92rem;
  color: var(--c-navy);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.corich-form .form-control:focus,
.corich-form .form-select:focus {
  border-color: var(--c-blue);
  box-shadow: 0 0 0 3px rgba(54,162,206,.15);
  outline: none;
}
.corich-form label {
  font-family: var(--font-heading);
  font-size: .82rem;
  font-weight: 600;
  color: var(--c-navy);
  margin-bottom: 6px;
}
.corich-form .form-text {
  font-size: .78rem;
  color: var(--c-muted);
}
.corich-form .invalid-feedback {
  font-size: .78rem;
  font-weight: 600;
}

/* ────────────────────────────────────────────────────────────────
   11. CARDS GÉNÉRIQUES
──────────────────────────────────────────────────────────────── */
.corich-card {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-normal), box-shadow var(--t-normal), border-color var(--t-normal);
}
.corich-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(54,162,206,.3);
}

/* ────────────────────────────────────────────────────────────────
   12. ICÔNES COLORÉES
──────────────────────────────────────────────────────────────── */
.icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-md);
  flex-shrink: 0;
}
.icon-box-sm  { width: 38px; height: 38px; font-size: .95rem; }
.icon-box-md  { width: 52px; height: 52px; font-size: 1.2rem; }
.icon-box-lg  { width: 68px; height: 68px; font-size: 1.6rem; }

.icon-green  { background: rgba(130,190,96,.14); color: var(--c-green); }
.icon-blue   { background: rgba(54,162,206,.14);  color: var(--c-blue); }
.icon-purple { background: rgba(78,43,134,.12);   color: var(--c-purple); }
.icon-navy   { background: rgba(26,29,59,.07);    color: var(--c-navy); }

/* ────────────────────────────────────────────────────────────────
   13. PAGE HEADER (sous-pages)
──────────────────────────────────────────────────────────────── */
.page-header {
  background: var(--grad-dark);
  padding: 64px 0 52px;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='30' cy='30' r='1' fill='%23fff' fill-opacity='.06'/%3E%3C/svg%3E");
}
.page-header-content { position: relative; z-index: 2; }
.page-header h1 {
  color: #fff;
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 10px;
}
.page-header p {
  color: rgba(255,255,255,.65);
  font-size: 1.02rem;
  margin: 0;
}

/* ────────────────────────────────────────────────────────────────
   14. PAGINATION
──────────────────────────────────────────────────────────────── */
.corich-pagination .page-link {
  border: 1.5px solid var(--c-border);
  color: var(--c-navy);
  border-radius: var(--r-sm) !important;
  margin: 0 3px;
  font-family: var(--font-heading);
  font-size: .84rem;
  font-weight: 600;
  padding: 8px 14px;
  transition: all var(--t-fast);
}
.corich-pagination .page-link:hover {
  background: var(--c-light-purple);
  border-color: var(--c-purple);
  color: var(--c-purple);
}
.corich-pagination .page-item.active .page-link {
  background: var(--grad-main);
  border-color: transparent;
  color: #fff;
  box-shadow: var(--shadow-btn);
}

/* ────────────────────────────────────────────────────────────────
   15. LOADER / SPINNER
──────────────────────────────────────────────────────────────── */
.corich-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--c-border);
  border-top-color: var(--c-blue);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ────────────────────────────────────────────────────────────────
   16. SCROLL BAR personnalisée (Webkit)
──────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--c-light); }
::-webkit-scrollbar-thumb {
  background: rgba(78,43,134,.3);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--c-purple); }

/* ────────────────────────────────────────────────────────────────
   17. RESPONSIVE UTILITIES
──────────────────────────────────────────────────────────────── */
@media (max-width: 767px) {
  .section-title { font-size: clamp(1.5rem, 5vw, 2rem); }
  .btn-corich-primary,
  .btn-corich-outline { padding: 11px 24px; font-size: .86rem; }
  .messages-container { width: calc(100vw - 32px); right: 16px; }
  .back-to-top-btn { bottom: 16px; right: 16px; }
  .footer-top { padding: 48px 0 36px; }
}