/* ============================================================================
   ÉCRAN D'AUTHENTIFICATION
   ============================================================================ */

.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
}

/* Motif d'arrière-plan évoquant une grille de fiche de score, en filigrane */
.auth-screen::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
      0deg,
      var(--line) 0,
      var(--line) 1px,
      transparent 1px,
      transparent 48px
    ),
    repeating-linear-gradient(90deg, var(--line) 0, var(--line) 1px, transparent 1px, transparent 48px);
  opacity: 0.35;
  pointer-events: none;
}

.auth-panel {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
}

.auth-logo {
  text-align: center;
  margin-bottom: var(--space-6);
}

.auth-logo .grid-dots {
  display: inline-flex;
  gap: 6px;
  margin-bottom: var(--space-3);
}

.auth-logo .grid-dots span {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  display: inline-block;
}

.auth-logo .grid-dots span:nth-child(1) {
  background: var(--row-a);
}
.auth-logo .grid-dots span:nth-child(2) {
  background: var(--row-b);
}
.auth-logo .grid-dots span:nth-child(3) {
  background: var(--row-c);
}
.auth-logo .grid-dots span:nth-child(4) {
  background: var(--row-d);
}

.auth-logo h1 {
  font-size: 3rem;
  margin: 0;
}

.auth-logo p {
  color: var(--ink-soft);
  margin-top: var(--space-2);
}

.auth-tabs {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  background: var(--line);
  border-radius: var(--radius-md);
  padding: 4px;
}

.auth-tabs button {
  flex: 1;
  padding: var(--space-3);
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  font-weight: 600;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.auth-tabs button.active {
  background: var(--paper-raised);
  color: var(--ink);
  box-shadow: var(--shadow-card);
}

.auth-hint {
  margin-top: var(--space-4);
  font-size: 0.85rem;
  color: var(--ink-soft);
  text-align: center;
}