.tc-sessions-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1rem; }
.tc-session-card { border: 1px solid #e5e7eb; border-radius: 8px; padding: 1rem; }
.tc-session-card h3 { margin-top: 0; }
.tc-btn { cursor: pointer; }
.tc-btn--small { padding: 0.4rem 0.8rem; font-size: 0.9rem; }

/* Countdown bar */
.tc-countdown-bar { background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%); color: #fff; padding: 0.75rem 1rem; margin: 0 0 1.5rem; }
.tc-countdown-bar--none { background: #6b7280; }
.tc-countdown-bar__inner { max-width: 1200px; margin: 0 auto; display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem 1rem; }
.tc-countdown-bar__label { font-weight: 600; margin-right: auto; }
.tc-countdown-bar__timer { font-variant-numeric: tabular-nums; }
.tc-countdown-bar .tc-btn--small { background: rgba(255,255,255,0.25); color: #fff; border: 1px solid rgba(255,255,255,0.5); }
.tc-countdown-bar .tc-btn--small:hover { background: rgba(255,255,255,0.35); color: #fff; }

/* Courses bar */
.tc-courses-bar { background: #f3f4f6; border: 1px solid var(--tc-border, #e5e7eb); border-radius: 8px; padding: 0.75rem 1rem; margin: 0 0 1.5rem; }
.tc-courses-bar__inner { max-width: 1200px; margin: 0 auto; display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem; }
.tc-courses-bar__label { font-weight: 600; margin-right: 0.5rem; color: var(--tc-text-muted, #6b7280); }
.tc-courses-bar__item { padding: 0.25rem 0.5rem; background: #fff; border-radius: 4px; border: 1px solid #e5e7eb; text-decoration: none; color: var(--tc-primary, #2563eb); font-size: 0.9rem; }
.tc-courses-bar__item:hover { text-decoration: none; background: #eff6ff; }
.tc-courses-bar__empty { margin: 0; color: var(--tc-text-muted, #6b7280); }
.tc-section-title { margin: 0 0 1rem; font-size: 1.5rem; }
.tc-earliest-sessions { margin-bottom: 2rem; }

/* Registration modal – HIDDEN by default. Only visible when visitor clicks "Register" (class techbox-modal-visible added by JS) */
#techbox-register-modal {
  display: none !important;
  position: fixed;
  inset: 0;
  z-index: 100000;
  background: rgba(0, 0, 0, 0.5);
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
#techbox-register-modal.techbox-modal-hidden {
  display: none !important;
}
#techbox-register-modal.techbox-modal-visible {
  display: flex !important;
}
#techbox-register-modal .techbox-modal-dialog {
  background: #fff;
  padding: 1.75rem;
  max-width: 420px;
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}
#techbox-register-modal h3 {
  margin: 0 0 1.25rem;
  font-size: 1.25rem;
}
#techbox-register-modal label {
  display: block;
  margin-bottom: 0.25rem;
  font-weight: 500;
  font-size: 0.9rem;
}
#techbox-register-modal input[type="text"],
#techbox-register-modal input[type="email"],
#techbox-register-modal textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  font-size: 1rem;
  margin-bottom: 1rem;
}
#techbox-register-modal textarea { min-height: 80px; resize: vertical; }
#techbox-register-modal .techbox-modal-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}
#techbox-register-message { margin-top: 1rem; font-size: 0.9rem; }
#techbox-register-message.success { color: #059669; }
#techbox-register-message.error { color: #dc2626; }

.tc-exam-form .tc-exam-question { margin-bottom: 1.5rem; }
.tc-exam-form label { display: block; margin: 0.25rem 0; }