/**
 * T20 CCL Responsive Stylesheet
 * Breakpoints: Mobile (<= 767px), Tablet (768px - 1199px), Desktop (>= 1200px)
 * Version: 1.2.0 (Header & Contrast Fix)
 */

@media (max-width: 1199px) {
  /* Tablet & Mobile Drawer Navigation for 9 top-level items */
  .t20-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    box-shadow: 0 14px 35px rgba(0, 0, 0, 0.18);
    padding: 16px 20px 24px;
    flex-direction: column;
    align-items: flex-start;
    border-top: 1px solid var(--ccl-border-light);
    margin: 0;
    z-index: 1001;
    max-height: 80vh;
    overflow-y: auto;
  }

  .t20-nav.is-open {
    display: flex;
  }

  .t20-menu {
    flex-direction: column;
    width: 100%;
    gap: 0;
    align-items: flex-start;
  }

  .t20-menu > li {
    width: 100%;
    height: auto;
    border-bottom: 1px solid var(--ccl-border-light);
    display: block;
    padding: 0;
  }

  .t20-menu > li:last-child {
    border-bottom: none;
  }

  .t20-menu > li > a {
    display: flex;
    justify-content: space-between;
    width: 100%;
    padding: 12px 8px;
    font-size: 1rem;
    font-weight: 600;
    color: #0F172A;
  }

  /* Sub-menu on mobile/tablet drawer */
  .t20-menu .sub-menu {
    position: static;
    display: block;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--ccl-green-500);
    margin: 4px 0 10px 12px;
    padding: 4px 0;
    background-color: #F8FAFC;
    border-radius: 4px;
    min-width: 0;
    width: calc(100% - 16px);
  }

  .t20-menu .sub-menu li {
    border-bottom: none;
    display: block;
  }

  .t20-menu .sub-menu a {
    padding: 8px 14px;
    font-size: 0.9rem;
    color: #334155;
  }

  .t20-menu-toggle {
    display: inline-flex;
  }

  /* Grid Layouts on Tablet */
  .t20-footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .t20-steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .t20-roles-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .t20-hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .t20-reg-layout {
    grid-template-columns: 1fr;
  }

  .t20-gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }

  .t20-video-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (max-width: 767px) {
  body {
    padding-bottom: 64px; /* Space for fixed mobile bottom bar */
  }

  .t20-topbar-left {
    display: none; /* Hide long helpline text on narrow mobile */
  }

  .t20-topbar .t20-container {
    justify-content: center;
  }

  .t20-header-inner {
    height: 64px;
  }

  .t20-logo img {
    max-height: 40px;
  }

  .t20-logo-title {
    font-size: 1.1rem;
  }

  .t20-header-actions .t20-btn {
    display: none; /* Main CTA handled by sticky mobile bottom bar */
  }

  /* Hero adjustments */
  .t20-hero {
    padding: 45px 0 40px;
    text-align: center;
  }

  .t20-hero-title {
    font-size: 2.2rem;
  }

  .t20-hero-content {
    margin: 0 auto;
  }

  .t20-hero-lead {
    font-size: 1.05rem;
    margin-bottom: 24px;
  }

  .t20-hero-actions {
    justify-content: center;
    flex-direction: column;
    gap: 12px;
  }

  .t20-hero-actions .t20-btn {
    width: 100%;
  }

  .t20-hero-stats {
    grid-template-columns: repeat(2, 1fr);
    text-align: center;
  }

  .t20-stat-box {
    text-align: center;
    border-left: none;
    border-bottom: 2px solid var(--ccl-gold-400);
    padding-bottom: 8px;
  }

  .t20-stat-num {
    font-size: 1.5rem;
  }

  /* Grids on Mobile */
  .t20-steps-grid {
    grid-template-columns: 1fr;
  }

  .t20-roles-grid {
    grid-template-columns: 1fr;
  }

  .t20-trials-grid {
    grid-template-columns: 1fr;
  }

  .t20-gallery-grid {
    grid-template-columns: 1fr;
  }

  .t20-video-grid {
    grid-template-columns: 1fr;
  }

  /* Forms & Registration */
  .t20-reg-section {
    padding: 24px 0 45px;
  }

  .t20-form-card {
    padding: 20px 16px;
    border-radius: var(--ccl-radius-lg);
  }

  .t20-form-row {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  /* Footer */
  .t20-footer {
    padding: 40px 0 20px;
  }

  .t20-footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .t20-footer-bottom {
    flex-direction: column;
    gap: 14px;
    text-align: center;
  }

  .t20-footer-legal-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
  }

  /* Sticky Mobile Bar */
  .t20-mobile-bar {
    display: block;
  }
}