/* ============================================================
   STYLE GLOBAL — Application Quiz ESEPAC
   Inspiré du design SolidWorks Quiz (C. Rousset)
   ============================================================ */

/* --- Reset & base ----------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --blue         : #1a6cf6;
  --blue-dark    : #1251c0;
  --blue-light   : #e8f0fe;
  --bleu-marine  : #1A3A6B;
  --bleu-hover   : #142E56;
  --blanc        : #FFFFFF;
  --gris-clair   : #f8fafc;
  --gris-100     : #f1f5f9;
  --gris-200     : #e2e8f0;
  --gris-400     : #94a3b8;
  --gris-600     : #475569;
  --gris-800     : #1e293b;
  --gris-bordure : #e2e8f0;
  --vert         : #22c55e;
  --vert-clair   : #f0fdf4;
  --rouge        : #ef4444;
  --rouge-clair  : #fef2f2;
  --orange       : #f97316;
  --or           : #D4A017;
  --argent       : #9B9B9B;
  --bronze       : #A0522D;
  --texte        : #1e293b;
  --texte-doux   : #475569;
  --ombre        : 0 12px 40px rgba(0,0,0,.13);
  --ombre-sm     : 0 2px 8px rgba(0,0,0,.08);
  --rayon        : 14px;
  --police       : 'Segoe UI', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

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

body {
  font-family: var(--police);
  background: linear-gradient(135deg, #0f172a 0%, #1e3a6e 60%, #0f172a 100%);
  background-attachment: fixed;
  color: var(--texte);
  min-height: 100vh;
  line-height: 1.6;
}

/* --- Mise en page générale --------------------------------- */
.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px;
}

.container--large {
  max-width: 1100px;
}

/* --- Header ------------------------------------------------ */
.header {
  background-color: var(--bleu-marine);
  color: var(--blanc);
  padding: 14px 0;
  box-shadow: var(--ombre);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.header__logo {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.header__logo span {
  opacity: 0.65;
  font-weight: 400;
  font-size: 0.95rem;
  margin-left: 8px;
}

.header__badge {
  background: rgba(255,255,255,0.15);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
}

/* --- Main -------------------------------------------------- */
.main {
  flex: 1;
  padding: 32px 0 60px;
}

/* --- Carte ------------------------------------------------- */
.card {
  background: var(--blanc);
  border-radius: var(--rayon);
  box-shadow: var(--ombre);
  padding: 32px;
  margin-bottom: 24px;
}

.card--compact {
  padding: 20px 24px;
}

.card__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bleu-marine);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--gris-clair);
}

/* --- Formulaire -------------------------------------------- */
.form-group {
  margin-bottom: 18px;
}

label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--texte);
  margin-bottom: 6px;
}

input[type="text"],
input[type="email"],
input[type="password"],
select,
textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--gris-bordure);
  border-radius: 8px;
  font-family: var(--police);
  font-size: 1rem;
  color: var(--texte);
  background: var(--blanc);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--bleu-clair);
  box-shadow: 0 0 0 3px rgba(42, 82, 152, 0.12);
}

textarea {
  resize: vertical;
  min-height: 80px;
}

/* --- Boutons ----------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: 8px;
  font-family: var(--police);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
  text-decoration: none;
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--bleu-marine);
  color: var(--blanc);
}
.btn--primary:hover { background: var(--bleu-hover); box-shadow: var(--ombre); }

.btn--secondary {
  background: var(--gris-clair);
  color: var(--bleu-marine);
  border: 1.5px solid var(--gris-bordure);
}
.btn--secondary:hover { background: var(--gris-bordure); }

.btn--danger {
  background: var(--rouge);
  color: var(--blanc);
}
.btn--danger:hover { background: #a93226; }

.btn--success {
  background: var(--vert);
  color: var(--blanc);
}
.btn--success:hover { background: #15703d; }

.btn--full { width: 100%; }

.btn--sm {
  padding: 6px 14px;
  font-size: 0.85rem;
}

/* --- Alertes / messages ------------------------------------ */
.alert {
  padding: 14px 18px;
  border-radius: 8px;
  font-weight: 500;
  margin-bottom: 16px;
}

.alert--success {
  background: var(--vert-clair);
  color: var(--vert);
  border-left: 4px solid var(--vert);
}

.alert--error {
  background: var(--rouge-clair);
  color: var(--rouge);
  border-left: 4px solid var(--rouge);
}

.alert--info {
  background: #EBF2FF;
  color: var(--bleu-marine);
  border-left: 4px solid var(--bleu-clair);
}

/* --- Badge promo ------------------------------------------- */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.badge--m1 { background: #EBF2FF; color: var(--bleu-clair); }
.badge--m2 { background: #FFF3E0; color: #E65100; }
.badge--toutes { background: var(--gris-clair); color: var(--texte-doux); }

/* ============================================================
   INTERFACE QUIZ (étudiants) — style inspiré SolidWorks Quiz
   ============================================================ */

/* Écran de connexion */
.login-screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 20px 40px;
}

/* En-tête connexion */
.login-header {
  width: 100%;
  max-width: 500px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 22px 0 20px;
}

.login-logo {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #1a6cf6, #0d3fa6);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  color: #fff;
  box-shadow: 0 4px 14px rgba(26,108,246,.4);
  flex-shrink: 0;
}

.login-header-text h1 {
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
}

.login-header-text p {
  color: #94a3b8;
  font-size: .82rem;
}

/* Carte formulaire */
.login-card {
  background: var(--blanc);
  border-radius: var(--rayon);
  box-shadow: var(--ombre);
  width: 100%;
  max-width: 500px;
  overflow: hidden;
  padding: 32px;
}

/* Bannière cours */
.course-banner {
  background: linear-gradient(90deg, #0f3460, #1a6cf6);
  border-radius: 10px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.course-banner .cb-icon { font-size: 1.8rem; }

.course-banner h3 {
  color: #fff;
  font-size: .92rem;
  font-weight: 700;
}

.course-banner p {
  color: rgba(255,255,255,.7);
  font-size: .78rem;
  margin-top: 2px;
}

/* Blocs champs */
.name-block {
  background: var(--gris-100);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 12px;
}

.name-block label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--gris-600);
  display: block;
  margin-bottom: 7px;
}

.name-block input,
.name-block select {
  width: 100%;
  padding: 10px 13px;
  border: 1.5px solid var(--gris-200);
  border-radius: 8px;
  font-family: var(--police);
  font-size: .95rem;
  color: var(--texte);
  background: var(--blanc);
  outline: none;
  transition: border-color .2s;
}

.name-block input:focus,
.name-block select:focus {
  border-color: var(--blue);
}

/* Boutons (style référence) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: 10px;
  font-family: var(--police);
  font-size: .92rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .18s;
  text-decoration: none;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 4px 14px rgba(26,108,246,.3);
}
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-1px); }

.btn-secondary {
  background: var(--gris-100);
  color: var(--gris-600);
}
.btn-secondary:hover { background: var(--gris-200); }

.btn-danger {
  background: var(--rouge);
  color: #fff;
}
.btn-danger:hover { background: #dc2626; }

.btn-full  { width: 100%; }
.btn-sm    { padding: 6px 14px; font-size: .82rem; }

/* Header quiz en cours */
.quiz-top-header {
  background: linear-gradient(135deg, #1a6cf6, #0d3fa6);
  padding: 0;
}

.quiz-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  gap: 16px;
}

.quiz-top-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.quiz-top-title {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
}

.quiz-top-sub {
  color: rgba(255,255,255,.7);
  font-size: .78rem;
  margin-top: 1px;
}

.quiz-progress-label {
  font-size: .78rem;
  color: rgba(255,255,255,.75);
  font-weight: 600;
}

.quiz-progress-track {
  height: 5px;
  background: rgba(255,255,255,.2);
}

.quiz-progress-fill {
  height: 100%;
  background: #fff;
  transition: width .4s ease;
}

/* Carte quiz */
.quiz-card {
  background: var(--blanc);
  border-radius: var(--rayon);
  box-shadow: var(--ombre);
  padding: 32px;
  margin-bottom: 24px;
}

/* Chronomètre */
.chrono-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.chrono {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 4px solid var(--bleu-marine);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--bleu-marine);
  transition: border-color 0.3s, color 0.3s;
  position: relative;
}

.chrono--warning {
  border-color: #E67E22;
  color: #E67E22;
  animation: pulse 0.8s infinite;
}

.chrono--danger {
  border-color: var(--rouge);
  color: var(--rouge);
  animation: pulse 0.5s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

/* Barre de progression */
.progress-bar {
  height: 6px;
  background: var(--gris-bordure);
  border-radius: 3px;
  margin-bottom: 28px;
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: var(--bleu-marine);
  border-radius: 3px;
  transition: width 0.4s ease;
}

/* Question */
.question-numero {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--texte-doux);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.question-enonce {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--texte);
  margin-bottom: 24px;
  line-height: 1.5;
}

/* Options de réponse */
.options-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.option-btn {
  width: 100%;
  padding: 14px 18px;
  background: var(--blanc);
  border: 2px solid var(--gris-bordure);
  border-radius: 10px;
  font-family: var(--police);
  font-size: 1rem;
  color: var(--texte);
  text-align: left;
  cursor: pointer;
  transition: all 0.18s;
  display: flex;
  align-items: center;
  gap: 12px;
}

.option-btn:hover:not(:disabled) {
  border-color: var(--bleu-clair);
  background: #EBF2FF;
}

.option-lettre {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--gris-clair);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
  transition: background 0.18s, color 0.18s;
}

.option-btn--correct {
  border-color: var(--vert);
  background: var(--vert-clair);
}
.option-btn--correct .option-lettre {
  background: var(--vert);
  color: var(--blanc);
}

.option-btn--wrong {
  border-color: var(--rouge);
  background: var(--rouge-clair);
}
.option-btn--wrong .option-lettre {
  background: var(--rouge);
  color: var(--blanc);
}

.option-btn--disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Sélection en mode multi-réponse */
.option-btn--selected {
  border-color: #2563eb;
  background: #eff6ff;
}
.option-btn--selected .option-lettre {
  background: #2563eb;
  color: #fff;
}

/* Feedback après réponse */
.feedback {
  margin-top: 20px;
  padding: 16px 18px;
  border-radius: 10px;
  font-size: 0.95rem;
  line-height: 1.5;
}

.feedback--correct {
  background: var(--vert-clair);
  border-left: 4px solid var(--vert);
  color: #145A32;
}

.feedback--wrong {
  background: var(--rouge-clair);
  border-left: 4px solid var(--rouge);
  color: #7B241C;
}

.feedback__titre {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 4px;
}

/* Résultats finaux */
.score-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--bleu-marine);
  color: var(--blanc);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.score-circle__chiffre {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
}

.score-circle__label {
  font-size: 0.8rem;
  opacity: 0.75;
}

.recapitulatif__item {
  padding: 12px 0;
  border-bottom: 1px solid var(--gris-clair);
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.recapitulatif__icone {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--blanc);
  margin-top: 2px;
}

.recapitulatif__icone--ok  { background: var(--vert); }
.recapitulatif__icone--ko  { background: var(--rouge); }

/* ============================================================
   CLASSEMENT / PODIUM
   ============================================================ */
.podium {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 12px;
  margin: 28px 0;
}

.podium__place {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.podium__avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--blanc);
}

.podium__place--1 .podium__avatar { background: var(--or); width: 60px; height: 60px; font-size: 1.4rem; }
.podium__place--2 .podium__avatar { background: var(--argent); }
.podium__place--3 .podium__avatar { background: var(--bronze); }

.podium__socle {
  width: 80px;
  border-radius: 8px 8px 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--blanc);
}

.podium__place--1 .podium__socle { height: 80px; background: var(--or); width: 90px; }
.podium__place--2 .podium__socle { height: 60px; background: var(--argent); }
.podium__place--3 .podium__socle { height: 44px; background: var(--bronze); }

.podium__nom {
  font-size: 0.78rem;
  font-weight: 600;
  text-align: center;
  color: var(--texte);
  max-width: 80px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.podium__score {
  font-size: 0.72rem;
  color: var(--texte-doux);
}

/* Tableau classement */
.classement-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
}

.classement-table th {
  text-align: left;
  padding: 8px 12px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--texte-doux);
  border-bottom: 2px solid var(--gris-bordure);
}

.classement-table td {
  padding: 10px 12px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--gris-clair);
  vertical-align: middle;
}

.classement-table tr:last-child td { border-bottom: none; }

.classement-table tr.moi {
  background: #EBF2FF;
  font-weight: 700;
}

.rang {
  font-weight: 800;
  color: var(--bleu-marine);
  min-width: 28px;
  display: inline-block;
  text-align: center;
}

/* ============================================================
   INTERFACE FORMATEUR & ADMIN — Dashboard
   ============================================================ */

/* Navigation onglets */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--gris-clair);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.tab-btn {
  flex: 1;
  padding: 9px 14px;
  background: transparent;
  border: none;
  border-radius: 7px;
  font-family: var(--police);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--texte-doux);
  cursor: pointer;
  transition: all 0.18s;
  white-space: nowrap;
}

.tab-btn:hover { background: rgba(255,255,255,0.6); color: var(--texte); }

.tab-btn--active {
  background: var(--blanc);
  color: var(--bleu-marine);
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.tab-content { display: none; }
.tab-content--active { display: block; }

/* Stats cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--blanc);
  border-radius: var(--rayon);
  padding: 20px;
  text-align: center;
  box-shadow: var(--ombre);
  border-top: 4px solid var(--bleu-marine);
}

.stat-card__valeur {
  font-size: 2rem;
  font-weight: 800;
  color: var(--bleu-marine);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-card__label {
  font-size: 0.82rem;
  color: var(--texte-doux);
  font-weight: 500;
}

/* Table admin/formateur */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  text-align: left;
  padding: 10px 14px;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--texte-doux);
  background: var(--gris-clair);
  border-bottom: 2px solid var(--gris-bordure);
}

.data-table td {
  padding: 11px 14px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--gris-clair);
  vertical-align: middle;
}

.data-table tr:hover td { background: #FAFBFD; }

.data-table__actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

/* Toggle switch */
.toggle {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 22px;
}

.toggle input { opacity: 0; width: 0; height: 0; }

.toggle__slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--gris-bordure);
  border-radius: 22px;
  transition: 0.3s;
}

.toggle__slider::before {
  content: '';
  position: absolute;
  height: 16px; width: 16px;
  left: 3px; bottom: 3px;
  background: var(--blanc);
  border-radius: 50%;
  transition: 0.3s;
}

.toggle input:checked + .toggle__slider { background: var(--vert); }
.toggle input:checked + .toggle__slider::before { transform: translateX(18px); }

/* Modale */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay--open { display: flex; }

.modal {
  background: var(--blanc);
  border-radius: 14px;
  padding: 32px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 8px 40px rgba(0,0,0,0.2);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.modal__titre {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--bleu-marine);
}

.modal__fermer {
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--texte-doux);
  padding: 4px;
  line-height: 1;
}

.modal__fermer:hover { color: var(--rouge); }

/* Filtres */
.filtres {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  align-items: center;
}

.filtres select,
.filtres input {
  flex: 1;
  min-width: 140px;
  padding: 9px 12px;
  font-size: 0.9rem;
}

/* ============================================================
   RESPONSIVE — Mobile
   ============================================================ */
@media (max-width: 600px) {
  .card { padding: 20px 16px; }
  .login-card { padding: 28px 20px; }

  .stats-grid { grid-template-columns: 1fr 1fr; }

  .podium__socle { width: 68px; }
  .podium__place--1 .podium__socle { width: 80px; }
  .podium__nom { max-width: 68px; font-size: 0.72rem; }

  .tabs { flex-direction: column; }
  .tab-btn { text-align: center; }

  .data-table { font-size: 0.82rem; }
  .data-table th, .data-table td { padding: 8px 10px; }

  .filtres { flex-direction: column; }
  .filtres select, .filtres input { min-width: 100%; }
}

/* ============================================================
   FOND GÉNÉRAL (écrans non-connexion)
   ============================================================ */
.main {
  flex: 1;
  padding: 28px 0 60px;
}

.container {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px;
}

.container--large { max-width: 1100px; }

/* Info-box (écran déjà fait) */
.info-box {
  background: #eff6ff;
  border-left: 4px solid var(--blue);
  border-radius: 8px;
  padding: 13px 16px;
  font-size: .88rem;
  color: #1e3a8a;
  line-height: 1.6;
}

/* Alertes */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: .88rem;
  margin-bottom: 14px;
}
.alert--error {
  background: var(--rouge-clair);
  color: #991b1b;
  border-left: 4px solid var(--rouge);
}
.alert--info {
  background: #eff6ff;
  color: #1e3a8a;
  border-left: 4px solid var(--blue);
}

/* ============================================================
   UTILITAIRES
   ============================================================ */
.hidden    { display: none !important; }
.text-center { text-align: center; }
.text-muted  { color: var(--texte-doux); font-size: 0.88rem; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.gap-8  { gap: 8px; }
.flex   { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.fw-700 { font-weight: 700; }