[data-theme="dark"] .lessons-loading-card {
  animation:
    lessons-card-in 0.32s cubic-bezier(0.34, 1.56, 0.64, 1),
    lessons-card-glow-dark 2.6s ease-in-out 0.32s infinite;
}

@keyframes lessons-card-glow-dark {
  0%, 100% { box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5), 0 0 0 rgba(240, 180, 41, 0); }
  50%      { box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5), 0 0 30px rgba(240, 180, 41, 0.28); }
}

@keyframes lessons-card-in {
  from { transform: scale(0.86) translateY(6px); opacity: 0; }
  to   { transform: scale(1) translateY(0);      opacity: 1; }
}

@keyframes lessons-card-glow {
  0%, 100% { box-shadow: 0 24px 64px rgba(12, 32, 54, 0.32), 0 0 0 rgba(18, 120, 208, 0); }
  50%      { box-shadow: 0 24px 64px rgba(12, 32, 54, 0.32), 0 0 30px rgba(18, 120, 208, 0.22); }
}

.lessons-loading-spinner {
  position: relative;
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
}

.lessons-loading-spinner-ring {
  position: absolute;
  border-radius: 50%;
}

.lessons-loading-spinner-ring--outer {
  inset: 0;
  background: conic-gradient(from 0deg, rgba(18, 120, 208, 0) 0deg, #75bdf2 200deg, #1278d0 360deg);
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 6px), #000 calc(100% - 6px));
          mask: radial-gradient(farthest-side, transparent calc(100% - 6px), #000 calc(100% - 6px));
  animation: lessons-spin 1.1s linear infinite;
  box-shadow: 0 0 18px rgba(18, 120, 208, 0.25);
}

.lessons-loading-spinner-ring--inner {
  inset: 13px;
  background: conic-gradient(from 180deg, rgba(242, 193, 78, 0) 0deg, #f7d98a 160deg, #f2c14e 360deg);
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 4px), #000 calc(100% - 4px));
          mask: radial-gradient(farthest-side, transparent calc(100% - 4px), #000 calc(100% - 4px));
  animation: lessons-spin-reverse 0.85s linear infinite;
}

.lessons-loading-spinner-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  animation: lessons-icon-float 1.8s ease-in-out infinite;
}

@keyframes lessons-spin {
  to { transform: rotate(360deg); }
}

@keyframes lessons-spin-reverse {
  to { transform: rotate(-360deg); }
}

@keyframes lessons-icon-float {
  0%, 100% { transform: translateY(0) rotate(-4deg); }
  50%      { transform: translateY(-3px) rotate(4deg); }
}

.lessons-loading-text {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #2b4b69;
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: 0.01em;
}

[data-theme="dark"] .lessons-loading-text {
  color: #f0b429;
}

.lessons-loading-dots {
  display: inline-flex;
  gap: 3px;
  margin-left: 5px;
}

.lessons-loading-dots span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #1278d0;
  opacity: 0.3;
  animation: lessons-dot-bounce 1.1s ease-in-out infinite;
}

[data-theme="dark"] .lessons-loading-dots span {
  background: #f0b429;
}

.lessons-loading-dots span:nth-child(2) {
  animation-delay: 0.15s;
}

.lessons-loading-dots span:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes lessons-dot-bounce {
  0%, 80%, 100% { opacity: 0.3; transform: translateY(0); }
  40%           { opacity: 1;   transform: translateY(-3px); }
}

.quiz-retry-card,
.subscription-expired-card,
.subscription-confirm-card,
.subscription-sent-card {
  width: 100%;
  max-width: 460px;
  background: #ffffff;
  border-radius: 28px;
  padding: 22px 24px 24px;
  text-align: center;
}

.quiz-retry-icon,
.subscription-expired-icon {
  width: 78px;
  height: 78px;
  margin: 2px auto 14px;
  border-radius: 50%;
  background: #fce6ea;
  color: #d34a5f;
  font-weight: 800;
  font-size: 2.4rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.quiz-retry-card h3,
.subscription-expired-card h3 {
  margin: 0 0 10px;
  color: #15375b;
  font-size: 2.05rem;
  line-height: 1.14;
}

.quiz-retry-card p,
.subscription-expired-card p {
  margin: 0 0 18px;
  color: #9aa8b8;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
}

.quiz-retry-card .quiz-retry-explanation,
.quiz-warmup-card .quiz-retry-explanation {
  margin: 0 0 18px;
  padding: 14px 16px;
  background: #eef4fb;
  border: 1px solid #c7d7e8;
  border-radius: 16px;
  color: #1f3b58;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.45;
  text-align: left;
}

.quiz-warmup-modal {
  position: fixed;
  inset: 0;
  z-index: 1250;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(7, 17, 28, 0.5);
  padding: 16px;
}

.quiz-warmup-modal.is-open {
  display: flex;
}

.quiz-warmup-card {
  width: 100%;
  max-width: 480px;
  background: #ffffff;
  border-radius: 28px;
  padding: 26px 26px 24px;
  text-align: center;
}

.quiz-warmup-badge {
  display: inline-block;
  margin: 0 0 6px;
  padding: 6px 16px;
  border-radius: 999px;
  background: #eef4fb;
  color: #1f4f7a;
  font-weight: 700;
  font-size: 0.85rem;
}

.quiz-warmup-counter {
  margin: 0 0 14px;
  color: #6b7c8e;
  font-weight: 700;
  font-size: 0.85rem;
}

.quiz-warmup-question {
  margin: 0 0 16px;
  color: #15375b;
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.35;
}

.quiz-warmup-card .quiz-options {
  margin-bottom: 14px;
}

.quiz-warmup-card .quiz-status {
  margin-bottom: 10px;
}

.quiz-warmup-card .quiz-check-btn {
  width: 100%;
}

.subscription-expired-renew-btn,
.subscription-expired-back-btn {
  display: block;
  width: 100%;
  box-sizing: border-box;
  border-radius: 999px;
  padding: 12px 16px;
  font-weight: 700;
  text-align: center;
}

.subscription-expired-renew-btn {
  background: linear-gradient(135deg, #1f4f7a, #133454);
  color: #ffffff;
  border: none;
  margin-bottom: 10px;
}

.subscription-expired-back-btn {
  background: #f1f5f9;
  color: #143154;
  border: 1px solid #bfcbd8;
}

/* ── Subscription pending modal ── */
.subscription-pending-modal {
  position: fixed;
  inset: 0;
  background: rgba(7, 17, 28, 0.55);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 14px;
  z-index: 1100;
}

.subscription-pending-modal.is-open {
  display: flex;
}

.subscription-pending-card {
  width: 100%;
  max-width: 460px;
  background: #ffffff;
  border-radius: 28px;
  padding: 30px 28px 28px;
  text-align: center;
  box-shadow: 0 28px 68px rgba(12, 26, 50, 0.28);
}

.subscription-pending-icon {
  font-size: 2.4rem;
  line-height: 1;
  margin: 0 auto 14px;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, #e8f4ff, #d0e8ff);
  display: flex;
  align-items: center;
  justify-content: center;
}

.subscription-pending-card h3 {
  margin: 0 0 8px;
  color: #102740;
  font-size: 1.7rem;
  font-weight: 900;
  line-height: 1.15;
}

.subscription-pending-lead {
  margin: 0 0 22px;
  color: #5a7a96;
  font-size: 0.97rem;
  font-weight: 600;
  line-height: 1.5;
}

.subscription-pending-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0 auto 22px;
  max-width: 260px;
  text-align: left;
}

.subscription-pending-step {
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  padding: 6px 0;
}

.subscription-pending-step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 9px;
  top: calc(50% + 9px);
  width: 2px;
  height: calc(100% - 6px);
  background: #e3eaf2;
  z-index: 0;
}

.subscription-pending-step--done:not(:last-child)::after {
  background: #22c55e;
}

.subscription-pending-step-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  flex-shrink: 0;
  background: #e3eaf2;
  border: 2px solid #c8d8e8;
  position: relative;
  z-index: 1;
}

.subscription-pending-step--done .subscription-pending-step-dot {
  background: #22c55e;
  border-color: #16a34a;
}

.subscription-pending-step--done .subscription-pending-step-dot::after {
  content: "✓";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 0.7rem;
  font-weight: 900;
}

.subscription-pending-step--active .subscription-pending-step-dot {
  background: #3b82f6;
  border-color: #1d4ed8;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
  animation: pendingPulse 1.8s ease-in-out infinite;
}

@keyframes pendingPulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2); }
  50%       { box-shadow: 0 0 0 8px rgba(59, 130, 246, 0.08); }
}

.subscription-pending-step-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: #8a9db4;
}

.subscription-pending-step--done .subscription-pending-step-label { color: #16a34a; }
.subscription-pending-step--active .subscription-pending-step-label { color: #1d4ed8; }

.subscription-pending-note {
  margin: 0 0 20px;
  font-size: 0.83rem;
  color: #a0b4c8;
  line-height: 1.5;
  font-weight: 600;
}

.subscription-pending-back-btn {
  display: block;
  width: 100%;
  box-sizing: border-box;
  border-radius: 999px;
  padding: 12px 16px;
  font-weight: 700;
  background: #f1f5f9;
  color: #143154;
  border: 1px solid #bfcbd8;
}

.subscription-pending-back-btn:hover { background: #e6edf6; }

[data-theme="dark"] .subscription-pending-card {
  background: linear-gradient(160deg, #0f1e38 0%, #0a1628 100%);
  box-shadow: 0 28px 68px rgba(0,0,0,.55);
}
[data-theme="dark"] .subscription-pending-icon { background: linear-gradient(135deg, #0f2244, #162e52); }
[data-theme="dark"] .subscription-pending-card h3 { color: #e8f0ff; }
[data-theme="dark"] .subscription-pending-lead { color: #7a9ab8; }
[data-theme="dark"] .subscription-pending-step:not(:last-child)::after { background: rgba(255,255,255,.1); }
[data-theme="dark"] .subscription-pending-step--done:not(:last-child)::after { background: #16a34a; }
[data-theme="dark"] .subscription-pending-step-dot { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.15); }
[data-theme="dark"] .subscription-pending-step-label { color: #5a7a96; }
[data-theme="dark"] .subscription-pending-step--done .subscription-pending-step-label { color: #4ade80; }
[data-theme="dark"] .subscription-pending-step--active .subscription-pending-step-label { color: #60a5fa; }
[data-theme="dark"] .subscription-pending-note { color: #4a6480; }
[data-theme="dark"] .subscription-pending-back-btn { background: rgba(255,255,255,.06); color: #d8e8ff; border-color: rgba(255,255,255,.14); }
[data-theme="dark"] .subscription-pending-back-btn:hover { background: rgba(255,255,255,.1); }

.subscription-renew-card {
  width: 100%;
  max-width: 460px;
  text-align: left;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 55%, #f1f4f9 100%) !important;
  box-shadow: 0 24px 60px rgba(12, 26, 50, 0.28) !important;
}

[data-theme="dark"] .subscription-renew-card {
  background: linear-gradient(175deg, #0f1e38 0%, #0a1628 100%) !important;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55) !important;
}

.subscription-renew-hint {
  margin: 10px 0 6px;
  text-align: center;
  color: #5c6f86;
  font-weight: 700;
}

.subscription-renew-price-btn {
  width: 100%;
  margin-top: 6px;
  border-radius: 999px;
  background: linear-gradient(135deg, #1f4f7a, #133454);
  color: #ffffff;
  border: none;
}

.subscription-renew-back-btn {
  width: 100%;
  border-radius: 999px;
  background: #f1f5f9;
  color: #143154;
  border: 1px solid #bfcbd8;
}

.subscription-confirm-card,
.subscription-sent-card {
  text-align: center;
}

.subscription-confirm-card h3,
.subscription-sent-card h3 {
  margin: 0 0 10px;
  color: #15375b;
  font-size: 1.9rem;
  line-height: 1.2;
}

.subscription-confirm-card p,
.subscription-sent-card p {
  margin: 0 0 18px;
  color: #6f8197;
  font-size: 1rem;
  font-weight: 600;
}

.subscription-confirm-back-btn,
.subscription-confirm-ok-btn,
.subscription-sent-back-btn {
  display: block;
  width: 100%;
  box-sizing: border-box;
  border-radius: 999px;
  padding: 12px 16px;
  font-weight: 700;
  text-align: center;
}

.subscription-confirm-back-btn {
  background: #f1f5f9;
  color: #143154;
  border: 1px solid #bfcbd8;
}

.subscription-confirm-ok-btn {
  background: linear-gradient(135deg, #1f4f7a, #133454);
  color: #ffffff;
  border: none;
  margin-bottom: 10px;
}

.subscription-sent-back-btn {
  background: linear-gradient(135deg, #1f4f7a, #133454);
  color: #ffffff;
  border: none;
}

.subscription-sent-icon {
  width: 72px;
  height: 72px;
  margin: 4px auto 14px;
  border-radius: 50%;
  background: #2fbf71;
  position: relative;
}

.subscription-sent-icon::after {
  content: "";
  position: absolute;
  left: 23px;
  top: 16px;
  width: 18px;
  height: 32px;
  border-right: 6px solid #ffffff;
  border-bottom: 6px solid #ffffff;
  transform: rotate(45deg);
}

.quiz-modal-theory-btn {
  display: block;
  width: 100%;
  box-sizing: border-box;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid #ccd8e5;
  color: #133a63;
  font-weight: 700;
  margin: 0 0 10px;
  padding: 12px 18px;
  text-align: center;
}

.quiz-modal-retry-btn {
  display: block;
  width: 100%;
  border-radius: 999px;
  background: #153f70;
  color: #ffffff;
  font-weight: 700;
  padding: 12px 18px;
}

@media (max-width: 900px) {
  .presentation-topbar {
    flex-direction: column;
    align-items: flex-start;
  }
  .presentation-actions {
    width: 100%;
    align-items: flex-start;
  }
  .presentation-controls {
    flex-wrap: wrap;
  }
  .lessons-page {
    padding: 24px 5% 40px;
  }

  .lessons-header h1 {
    font-size: 1.8rem;
  }

  .lessons-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

  .lesson-cover {
    height: 190px;
  }

  .lesson-content h3 {
    font-size: 1.45rem;
  }

  .lesson-watch-btn {
    font-size: 1.2rem;
  }

  .lesson-view-page,
  .tasks-page,
  .admin-page,
  .presentation-page {
    padding: 18px 5% 34px;
  }

  .lesson-player-card,
  .tasks-card,
  .homework-ready-card {
      padding: 16px;
      border-radius: 18px;
  }

  .lesson-player-title {
    font-size: 1.5rem;
  }

  .lesson-video-shell {
    border-radius: 16px;
  }

  .lesson-player-actions {
    grid-template-columns: 1fr;
  }

  .lesson-nav-btn {
    text-align: center;
  }

  .lesson-nav-btn-tasks {
    grid-column: auto;
  }

  .admin-create-queue-modal-card {
    padding: 14px;
  }

  .admin-create-queue-list {
    grid-template-columns: 1fr;
  }

  .lesson-video-cover-play {
    width: 70px;
    height: 46px;
  }

  .lesson-video-cover-play::before {
    border-width: 10px 0 10px 17px;
  }

  .lesson-video-cover-text {
    font-size: 0.8rem;
  }

  .quiz-card {
    padding: 16px;
    border-radius: 18px;
  }

  .quiz-topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .quiz-question {
    font-size: 1.15rem;
  }

  .quiz-option {
    padding: 12px;
    font-size: 1rem;
  }

  .quiz-nav-row {
    grid-template-columns: 1fr;
    justify-items: stretch;
    align-items: stretch;
  }

  .quiz-nav-left,
  .quiz-nav-center,
  .quiz-nav-right {
    justify-self: stretch;
  }

  .quiz-nav-right {
    min-width: 0;
  }

  .quiz-counter {
    text-align: center;
  }

  .quiz-nav-btn,
  .quiz-check-btn,
  .quiz-explain-btn {
    width: 100%;
  }

  .admin-dashboard-panel {
    grid-template-columns: 1fr;
  }

  .admin-dashboard-stat {
    border-right: none;
    border-bottom: 1px solid #e1e9f2;
    flex-direction: row;
    align-items: center;
  }

  [data-theme="dark"] .admin-dashboard-stat {
    border-color: rgba(255, 255, 255, 0.12);
  }

  .admin-dashboard-row {
    flex-wrap: wrap;
  }

  .admin-dashboard-row .admin-view-progress-btn,
  .admin-dashboard-row .admin-view-requests-btn,
  .admin-dashboard-row .admin-manage-btn,
  .admin-dashboard-row .admin-site-health-btn,
  .admin-search-btn,
  .admin-create-user-btn {
    width: 100%;
    min-width: 0;
  }

  .admin-manage-actions {
    grid-template-columns: 1fr;
  }

  .admin-payment-form {
    grid-template-columns: 1fr;
  }

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

  .profile-upgrade-btn {
    max-width: none;
    justify-self: stretch;
  }

  .profile-extras-grid {
    grid-template-columns: 1fr;
  }

  .admin-progress-modal-card {
    padding: 14px;
  }

  .admin-requests-modal-card,
  .admin-devices-modal-card,
  .admin-device-detail-card {
    padding: 14px;
  }

  .admin-progress-layout {
    grid-template-columns: 1fr;
  }

  .admin-progress-users-list {
    max-height: 40vh;
  }

  .quiz-retry-card,
  .subscription-expired-card,
  .subscription-renew-card,
  .subscription-confirm-card,
  .subscription-sent-card {
    border-radius: 22px;
    padding: 22px 16px 18px;
  }

  .quiz-retry-card h3,
  .subscription-expired-card h3,
  .subscription-confirm-card h3,
  .subscription-sent-card h3 {
    font-size: 1.75rem;
  }

  .quiz-retry-card p,
  .subscription-expired-card p,
  .subscription-confirm-card p,
  .subscription-sent-card p {
    font-size: 0.95rem;
  }

  .hero {
    padding: 28px 5% 16px;
  }

  .header-greeting {
    left: 5%;
    top: 8px;
    transform: none;
    font-size: 1.15rem;
    max-width: 90%;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .hero-header.is-compact .header-greeting {
    top: 50%;
    transform: translateY(-50%);
  }

  .hero-info-grid {
    grid-template-columns: 1fr;
    width: 100%;
  }

  .hero-info-card h3 {
    font-size: 1.6rem;
  }

  .hero-image {
    width: 100%;
  }

  .hero-image img {
    aspect-ratio: 16 / 8;
  }

  .course-layout {
    flex-direction: column;
    padding: 20px 5%;
  }

  .sidebar {
    width: auto;
  }

  .course-content {
    padding: 20px;
  }

  .upgrade-banner {
    flex-direction: column;
    align-items: flex-start;
    border-radius: 20px;
  }

  .upgrade-modal-card {
    padding: 22px 16px 18px;
    border-radius: 14px;
  }

  .enroll-modal-card {
    border-radius: 14px;
    padding: 20px 14px 16px;
  }

  .knowledge-test-card {
    border-radius: 14px;
    padding: 20px 14px 16px;
  }

  .knowledge-test-card h3 {
    font-size: 1.55rem;
  }

  .knowledge-test-question {
    font-size: 1.2rem;
  }

  .knowledge-test-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .knowledge-test-next-btn,
  .knowledge-test-restart-btn {
    width: 100%;
  }

  .upgrade-modal-title {
    margin-bottom: 14px;
    font-size: 1.7rem;
  }

  .upgrade-plan-grid {
    gap: 12px;
  }

  .upgrade-plan-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .upgrade-plan-card {
    border-radius: 20px;
    padding: 16px 14px 14px;
  }

  .upgrade-plan-head h4 {
    font-size: 1.6rem;
  }

  .upgrade-badge {
    padding: 8px 14px;
    font-size: 0.92rem;
  }

  .upgrade-plan-price-btn {
    gap: 10px;
    font-size: 0.98rem;
    padding: 12px 16px;
    flex-wrap: wrap;
  }

  .upgrade-discount-timer {
    top: -12px;
    right: 14px;
    padding: 6px 12px;
    font-size: 0.9rem;
  }

  .results-layout {
    width: 100%;
  }

  .results-title {
    font-size: 2rem;
  }

  .results-learn-btn {
    font-size: 1.2rem;
    padding: 14px 90px;
  }

  .mentors-more-btn {
    font-size: 1.2rem;
  }

  .results-mosaic {
    grid-template-columns: repeat(2, minmax(130px, 1fr));
    grid-auto-rows: 220px;
  }

  .results-mosaic .result-card {
    grid-column: span 1 !important;
    grid-row: span 1 !important;
  }

  .results-split {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .results-col {
    text-align: center;
  }

  .results-modal-card {
    padding: 24px 18px 22px;
  }

  .results-modal-tabs {
    grid-template-columns: 1fr;
  }

  .results-modal-tiles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: auto;
  }

	  .results-modal-certificate {
	    max-width: 420px;
	  }

  .results-modal-person {
    max-width: 360px;
  }

  .about-person,
  .about-person-featured {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 14px;
    border-radius: 16px;
    padding: 14px 12px;
    background: #f8fafb;
    border: 1px solid rgba(32, 45, 60, 0.12);
    min-height: auto;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .about-avatar,
  .about-person-featured .about-avatar,
  .about-grid .about-avatar {
    width: 90px;
    height: 90px;
    flex: 0 0 90px;
    margin-left: 0;
    border-radius: 50%;
  }

  .about-info h3 {
    font-size: 1.05rem;
    margin: 0 0 4px 0;
  }

  .about-info p {
    font-size: 0.95rem;
    line-height: 1.4;
    margin: 0;
  }

  .about-person-featured .about-info h3 {
    font-size: 1.05rem;
  }

  .about-person-featured .about-info p {
    font-size: 0.95rem;
  }

  .contact-card {
    grid-template-columns: 1fr;
    padding: 16px;
  }

  .contact-form h3,
  .contact-info h3 {
    font-size: 1.2rem;
  }
}

@media (max-width: 420px) {
  .upgrade-plan-price-btn {
    padding: 10px 12px;
    font-size: 0.92rem;
    gap: 8px;
  }

  .upgrade-old-price {
    font-size: 0.9em;
  }

  .upgrade-off-badge {
    font-size: 0.92rem;
    padding: 5px 12px;
  }

  .upgrade-new-price {
    font-size: 1.02em;
  }
}

@media (max-width: 640px) {
  .results-modal-tiles {
    grid-template-columns: 1fr;
    grid-auto-rows: auto;
  }

	  .results-modal-certificate {
	    max-width: 100%;
	    font-size: 0.8rem;
	  }

  .results-modal-person {
    max-width: 100%;
  }

  .results-modal-tile:nth-child(3n + 2) {
    --tile-offset: 0px;
  }
}

@import url("https://fonts.googleapis.com/css2?family=Playfair+Display:wght@600;700;800&family=Montserrat:ital,wght@0,600;0,700;1,700&display=swap");
.quiz-explain-modal.is-open .quiz-explain-card {
  transform: translateY(0);
}

@media (max-width: 520px) {
  body {
    font-size: 15px;
  }

  header {
    padding: 10px 4%;
  }

  .hero-header {
    --header-max-vh: 36;
    --header-min-px: 76;
    --logo-size-max: 190;
    --logo-size-min: 88;
    min-height: calc(var(--header-max-vh) * 1vh);
    padding: 56px 4% 16px;
    border-radius: 0 0 28px 28px;
    box-shadow: 0 14px 30px rgba(16, 32, 56, 0.18);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }

  .hero-header.is-compact {
    padding: 48px 4% 8px;
  }

  .hero-header .logo {
    position: static;
    transform: none;
    width: auto;
    height: auto;
    margin: 4px auto 0;
    order: 3;
  }

  .hero-header .logo img {
    width: auto;
    height: var(--logo-size);
    max-width: 90vw;
    max-height: none;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.22));
    transition: height 0.25s ease;
  }

  .header-greeting {
    position: static;
    order: 1;
    width: 100%;
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.2;
    background: rgba(255, 255, 255, 0.92);
    padding: 6px 10px;
    border-radius: 10px;
    text-align: left;
    max-width: none;
  }

  .hero-header .header-actions {
    position: absolute;
    top: 12px;
    width: auto;
    margin: 0;
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: flex-start;
    align-items: center;
    gap: 8px;
    z-index: 2;
  }

  .hero-header .header-actions-left,
  .hero-header .header-actions-right {
    top: 12px;
  }

  .hero-header .header-actions-left {
    left: 4%;
    right: auto;
  }

  .hero-header .header-actions-right {
    right: 4%;
    left: auto;
  }

  .hero-header .header-actions .btn {
    width: auto;
    padding: 6px 10px;
    font-size: 0.85rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(18, 42, 64, 0.2);
    box-shadow: 0 8px 16px rgba(16, 32, 56, 0.18);
  }

  .header-actions #admin-panel-btn,
  .header-actions #profile-btn {
    transform: none;
  }

  header .btn,
  #tasks-back-btn {
    position: static;
    width: 100%;
    max-width: 240px;
  }

  .hero {
    padding: 22px 4.5% 14px;
    gap: 16px;
  }

  .hero-info-card {
    padding: 14px;
    border-radius: 18px;
    box-shadow: 0 10px 22px rgba(16, 32, 56, 0.12);
  }

  .hero-info-card h3 {
    font-size: 1.35rem;
  }

  .hero-info-card p {
    font-size: 0.95rem;
  }

  .hero-image img {
    border-radius: 16px;
  }

  .levels {
    padding: 32px 5%;
  }

  .card {
    padding: 22px;
  }

  .knowledge-test-note {
    font-size: 1.2rem;
  }

  .upgrade-banner {
    padding: 18px;
  }

  .upgrade-text h3 {
    font-size: 1.5rem;
  }

  .upgrade-text p {
    font-size: 1rem;
  }

  .upgrade-btn {
    width: auto;
    max-width: 220px;
    padding: 10px 16px;
    font-size: 0.95rem;
    text-align: center;
    align-self: flex-start;
  }

  .results-title {
    font-size: 1.6rem;
    padding: 10px 14px;
  }

  .results-mosaic {
    grid-template-columns: 1fr;
    grid-auto-rows: 260px;
  }

  .result-card {
    border-radius: 10px;
  }

	  .result-card img {
	    width: 100%;
	    height: 100%;
	    object-fit: cover;
	    object-position: center;
	  }

  .result-card--text .result-card__label {
    font-size: 1.3rem;
  }

  .results-learn-btn,
  .mentors-more-btn {
    width: 100%;
    max-width: 320px;
    font-size: 1.1rem;
    padding: 12px 30px;
  }

  .about-person,
  .about-person-featured {
    flex-direction: column;
    text-align: center;
    align-items: center;
    padding: 16px;
  }

  .about-info h3 {
    font-size: 1.1rem;
  }

  .about-person-featured .about-info h3 {
    font-size: 1.2rem;
  }

  .about-person-featured .about-info p {
    font-size: 0.98rem;
  }

  .contact-card {
    padding: 12px;
  }

  .contact-quick-links {
    flex-direction: column;
    align-items: stretch;
  }

  .contact-link-btn {
    width: 100%;
    text-align: center;
  }

  .lessons-page {
    padding: 20px 5% 32px;
  }

  .lessons-header h1 {
    font-size: 1.6rem;
  }

  .lesson-cover {
    height: 170px;
  }

  .lesson-content {
    padding: 14px 16px 16px;
    min-height: 170px;
  }

  .lesson-content h3 {
    font-size: 1.2rem;
    min-height: auto;
  }

  .lesson-watch-btn {
    font-size: 1.05rem;
    min-width: 0;
    width: 100%;
  }

  .lesson-view-page,
  .tasks-page,
  .admin-page,
  .presentation-page {
    padding: 14px 4.5% 26px;
  }

  .lesson-player-title {
    font-size: 1.3rem;
  }

  .lesson-player-card,
  .tasks-card,
  .homework-ready-card {
    padding: 14px;
    border-radius: 16px;
  }

  .lesson-nav-btn {
    padding: 10px 18px;
  }

  .tasks-list {
    padding-left: 18px;
  }

  .quiz-question {
    font-size: 1.05rem;
  }

  .quiz-option {
    font-size: 0.95rem;
  }

  .quiz-nav-btn,
  .quiz-check-btn,
  .quiz-explain-btn {
    padding: 10px 18px;
  }

  .results-modal-title {
    font-size: 2rem;
  }

  .results-modal-subtitle {
    font-size: 2.4rem;
  }

	  .results-modal-certificate {
	    height: clamp(220px, 78vw, 420px);
	  }
}

@media (max-width: 720px) {
  /* ── Initial (large) header state on mobile ── */
  .hero-header {
    --header-max-vh: 38;   /* tall on load */
    --header-min-px: 70;   /* compact target height */
    --logo-size-max: 180;
    --logo-size-min: 90;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    grid-template-areas: "left-actions logo right-actions";
    align-items: center;
    gap: 4px;
    padding: 20px 4% 20px;
    min-height: calc(var(--header-max-vh) * 1vh);
  }

  .header-greeting {
    display: none !important;
  }

  .hero-header .header-actions {
    position: relative;
    z-index: 1;
    margin: 0;
    align-self: center;
    flex-wrap: nowrap;
    gap: 8px;
    width: auto;
  }

  .hero-header .header-actions-left {
    grid-area: left-actions;
    justify-self: start;
    justify-content: flex-start;
  }

  .hero-header .header-actions-right {
    grid-area: right-actions;
    justify-self: end;
    justify-content: flex-end;
  }

  .hero-header .logo {
    position: relative;
    z-index: 1;
    grid-area: logo;
    margin: 0 auto;
  }

  /* Large logo on initial load */
  .hero-header .logo img {
    width: min(72vw, 270px);
    height: auto;
    max-height: none;
    object-fit: contain;
    transition: width 0.32s ease;
  }

  .hero-header .header-actions .btn {
    padding: 10px 16px;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1;
  }

  /* ── Compact (scrolled) state — same look the user liked ── */
  .hero-header.is-compact {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    grid-template-areas: "left-actions logo right-actions";
    align-items: center;
    min-height: calc(var(--header-min-px) * 1px);
    padding: 10px 4% 10px;
    gap: 4px;
  }

  .hero-header.is-compact .logo {
    margin: 0 auto;
    align-self: center;
    transform: none;
  }

  /* Smaller logo in compact state */
  .hero-header.is-compact .logo img {
    width: min(40vw, 155px);
  }

  .hero-header.is-compact .header-actions {
    width: auto;
    align-self: center;
    margin-bottom: 0;
  }

  .hero-header.is-compact .header-actions .btn {
    padding: 10px 16px;
    font-size: 1rem;
  }
}

/* Final mobile symmetry + contact CTA polish */
@media (max-width: 720px) {
  .hero-header {
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    border-radius: 0 0 22px 22px;
    box-sizing: border-box;
  }

  .hero,
  .levels,
  .results-section,
  .contact-section,
  .lessons-page,
  .lesson-view-page,
  .tasks-page,
  .admin-page,
  .presentation-page {
    padding-left: 5%;
    padding-right: 5%;
    box-sizing: border-box;
  }

  .contact-card {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 14px;
    border-radius: 18px;
  }

  .contact-form,
  .contact-info {
    border-radius: 14px;
    padding: 16px;
  }

  .contact-quick-links {
    margin-top: 14px;
    display: grid;
    justify-items: center;
    gap: 12px;
    width: 100%;
  }

  .contact-link-btn {
    width: min(100%, 340px);
    min-height: 46px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    border-radius: 999px;
    font-size: 1rem;
    letter-spacing: 0.2px;
    box-shadow: 0 8px 16px rgba(17, 39, 64, 0.18);
  }
}

/* Hard mobile overrides to avoid cache/conflicting legacy rules */
@media (max-width: 900px) {
  html,
  body {
    overflow-x: hidden !important;
  }

  .hero-header {
    /* Fixed is more reliable than sticky across mobile browsers */
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 !important;
    /* Override legacy vh-based min-height so the header can truly shrink */
    min-height: auto !important;
    height: auto !important;
    padding-left: max(14px, 3.5%) !important;
    padding-right: max(14px, 3.5%) !important;
    padding-top: 22px !important;
    padding-bottom: 22px !important;
    border-radius: 0 0 20px 20px !important;
    box-sizing: border-box !important;
    /* Keep below modals AND the mobile nav drawer (#mobile-nav-drawer is
       999), but above page content — see the desktop rule's note on why
       this is 960, not the old 900. */
    z-index: 960 !important;
    transform: translateZ(0) !important;
    transition: padding 0.25s ease, border-radius 0.25s ease, box-shadow 0.25s ease !important;
    /* Binary snap (via .is-compact below) + CSS transition, not a
       scroll-position-proportional interpolation. This used to be driven
       by JS writing these as inline custom properties on every scroll
       frame across a ~220px window (see the removed syncMobileSmoothVars
       in script.js) — cheap in isolation, but continuous per-frame style
       writes during any scroll, on top of everything else in this file,
       added up to real jank on slower phones. A plain class toggle +
       CSS transition costs nothing outside the ~0.25s it's animating. */
    --m-logo-w: min(72vw, 270px);
    --m-btn-pad-y: 8px;
    --m-btn-pad-x: 12px;
    --m-btn-fs: 0.88rem;
  }

  body {
    padding-top: var(--hero-header-h, 0px) !important;
    scroll-padding-top: var(--hero-header-h, 0px) !important;
  }

  /* Course/lesson/admin/results headers — same "fixed beats sticky on mobile"
     fix as the homepage hero header above, so they stay pinned to the top
     while scrolling instead of sliding away. */
  .level-header,
  .admin-header {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 !important;
    z-index: 900 !important;
    box-sizing: border-box !important;
  }

  body:has(> .level-header),
  body:has(> .admin-header) {
    padding-top: var(--level-header-h, 150px) !important;
    scroll-padding-top: var(--level-header-h, 150px) !important;
  }

  .hero-header .logo img {
    width: var(--m-logo-w, min(72vw, 270px)) !important;
    height: auto !important;
    max-height: none !important;
    object-fit: contain !important;
    transition: width 0.25s ease;
  }

  .hero-header .header-actions .btn {
    padding: var(--m-btn-pad-y, 8px) var(--m-btn-pad-x, 12px) !important;
    font-size: var(--m-btn-fs, 0.88rem) !important;
    font-weight: 700 !important;
    transition: padding 0.25s ease, font-size 0.25s ease !important;
  }

  .hero-header.is-compact {
    border-radius: 0 0 16px 16px !important;
    padding-top: 18px !important;
    padding-bottom: 18px !important;
    --m-logo-w: min(38vw, 148px);
    --m-btn-pad-y: 6px;
    --m-btn-pad-x: 10px;
    --m-btn-fs: 0.82rem;
  }

  .hero-header.is-compact .logo img {
    width: var(--m-logo-w, min(78vw, 330px)) !important;
  }

  .hero-header.is-compact .header-actions .btn {
    padding: var(--m-btn-pad-y, 6px) var(--m-btn-pad-x, 10px) !important;
    font-size: var(--m-btn-fs, 0.82rem) !important;
  }

  .contact-section {
    padding-left: 4% !important;
    padding-right: 4% !important;
  }

  .contact-card {
    max-width: 100% !important;
    width: 100% !important;
    margin: 0 auto !important;
    padding: clamp(12px, 3.2vw, 16px) !important;
    border-radius: 18px !important;
    box-sizing: border-box !important;
  }

  .contact-quick-links {
    width: 100% !important;
    display: grid !important;
    gap: 12px !important;
    justify-items: stretch !important;
  }

  .contact-link-btn {
    width: 100% !important;
    max-width: 420px !important;
    min-height: 52px !important;
    margin: 0 auto !important;
    border-radius: 999px !important;
    font-size: 1.08rem !important;
    letter-spacing: 0.2px !important;
    padding: 14px 18px !important;
    box-shadow: 0 8px 16px rgba(16, 36, 60, 0.18) !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-sizing: border-box !important;
  }

  /* Keep the whole contact section visually centered on phones */
  .contact-section {
    text-align: center !important;
  }

  .contact-form {
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
  }

  .contact-submit-btn {
    width: min(78%, 320px) !important;
    align-self: center !important;
  }

  .contact-info {
    text-align: center !important;
  }

  /* Make "Test Your Knowledge" look balanced on phone */
  .knowledge-test-wrap {
    width: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
  }

  .knowledge-test-btn {
    width: min(86%, 290px) !important;
    padding: 12px 18px !important;
    border-radius: 16px !important;
    font-size: 1.05rem !important;
    box-shadow: 0 12px 24px rgba(16, 32, 56, 0.16) !important;
  }

	  /* Results mosaic: balanced tiles on phones (no huge empty space) */
	  .results-mosaic {
	    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
	    grid-template-rows: none !important;
	    grid-auto-rows: auto !important;
	    grid-auto-flow: row !important;
	    gap: 12px !important;
	  }
	
	  .results-mosaic .result-card {
	    border-radius: 16px !important;
	    grid-column: auto !important;
	    grid-row: auto !important;
	    aspect-ratio: 3 / 2;
	  }
	
	  /* Certificates should fit fully inside tiles (no cropping) */
	  .results-mosaic .result-card:not(.result-card--text) {
	    padding: 8px !important;
	    background: #ffffff !important;
	  }
	
	  .results-mosaic .result-card:not(.result-card--text) img {
	    width: 100% !important;
	    height: 100% !important;
	    object-fit: contain !important;
	    object-position: center center !important;
	    display: block !important;
	  }
	
	  .results-mosaic .result-card--text {
	    padding: 14px !important;
	  }
	
	  .results-mosaic .result-card--text .result-card__label {
	    font-size: 1.2rem !important;
	    line-height: 1.15 !important;
	  }
	}

/* ------------------------------------------------------------
   UI fixes (mobile header + lesson actions) — 2026-04-14
   ------------------------------------------------------------ */

/* Level headers: center logo + keep action button on the right */
.level-header,
.admin-header {
  display: grid !important;
  grid-template-columns: 1fr auto 1fr !important;
  align-items: center !important;
  column-gap: 12px !important;
}

.level-header .logo,
.admin-header .logo {
  grid-column: 2 !important;
  justify-self: center !important;
  margin: 0 !important;
}