src/App.css

.app-container {
  min-height: 100vh;
  --board-shift-x: 0px;
  --board-shift-y: 0px;
  --board-scale: 1;
  --board-width: min(92vw, 1080px);
  --board-min-height: 480px;
  --board-max-height: 480px;
  --side-column-width: 320px;
  --layout-gap: 16px;
  background-color: #F5E7C0;
  background-image: url('../aula.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 20px;
  padding-bottom: 170px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.app-container.onboarding-mode {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 18px;
}

.onboarding-wrap {
  width: min(1040px, 100%);
  margin: 0 auto;
}

.onboarding-card {
  margin: 0 auto;
  width: min(960px, 100%);
  background: rgba(255, 253, 242, 0.95);
  border: 3px solid #C8860A;
  border-radius: 18px;
  box-shadow: 0 14px 32px rgba(72, 44, 0, 0.18);
  padding: 28px;
}

.onboarding-card h1,
.onboarding-card h2 {
  margin: 0 0 8px;
  color: #3A2800;
}

.onboarding-card p {
  margin: 0 0 16px;
  color: #5A3F00;
  font-size: 17px;
}

.onboarding-form {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.onboarding-input {
  flex: 1;
  min-width: 220px;
  border: 2px solid #D8C384;
  border-radius: 10px;
  font-size: 18px;
  padding: 12px 14px;
  color: #3A2800;
  background: #FFFDF4;
}

.onboarding-input:focus {
  outline: none;
  border-color: #C8860A;
  box-shadow: 0 0 0 3px rgba(200, 134, 10, 0.17);
}

.onboarding-primary-button {
  border: 2px solid #B37708;
  background: linear-gradient(180deg, #FFD95A 0%, #F6C72A 100%);
  color: #4E3400;
  border-radius: 999px;
  padding: 11px 20px;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
  box-shadow: 0 7px 14px rgba(163, 109, 0, 0.22);
}

.onboarding-primary-button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(163, 109, 0, 0.28);
}

.onboarding-primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.class-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

.class-option {
  border: 2px solid #D8BC67;
  background: #FFF6D6;
  color: #4A3200;
  border-radius: 12px;
  padding: 12px 10px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.class-option:hover,
.class-option.selected {
  background: #FFE58E;
  transform: translateY(-1px);
}

.area-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.area-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  border: 3px solid #B47A03;
  border-radius: 16px;
  background: linear-gradient(180deg, #FFE578 0%, #FFD53A 100%);
  color: #4D3300;
  padding: 26px 14px;
  min-height: 210px;
  cursor: pointer;
  box-shadow: 0 10px 18px rgba(142, 89, 0, 0.2);
  transition: transform 0.22s ease, box-shadow 0.22s ease, filter 0.22s ease;
}

.area-option:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 14px 24px rgba(142, 89, 0, 0.28);
  filter: saturate(1.08);
}

.area-icon {
  font-size: 52px;
  line-height: 1;
}

.area-title {
  font-size: 23px;
  font-weight: 900;
}

.area-description {
  font-size: 15px;
  line-height: 1.35;
  max-width: 24ch;
}

.page-logo-wrap {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-bottom: -14px;
  position: relative;
  z-index: 12;
}

.page-logo {
  width: min(390px, 66vw);
  height: auto;
  filter: drop-shadow(0 8px 14px rgba(0, 0, 0, 0.18));
}

.main-content {
  max-width: 1200px;
  margin: 0 auto;
}

.scene {
  margin-bottom: 20px;
}

/* Wrapper che contiene bot (sul bordo) + lavagna */
.whiteboard-stage {
  position: relative;
  width: var(--board-width);
  margin: 0 auto;
  padding-bottom: 6px;
}

.progress-badge {
  position: absolute;
  top: -18px;
  left: 22px;
  z-index: 14;
  padding: 9px 16px;
  border-radius: 999px;
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.progress-badge.is-active {
  background: linear-gradient(135deg, rgba(140, 201, 230, 0.96) 0%, rgba(94, 174, 216, 0.96) 100%);
  border: 2px solid #4F98BE;
  box-shadow: 0 6px 14px rgba(79, 152, 190, 0.28);
}

.progress-badge.is-inactive {
  background: rgba(255, 248, 225, 0.95);
  border: 2px solid rgba(200, 134, 10, 0.75);
  color: #8A5A08;
  box-shadow: 0 5px 12px rgba(160, 120, 40, 0.18);
}

.whiteboard-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--side-column-width);
  gap: var(--layout-gap);
  align-items: start;
}

.board-column {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-width: 0;
}

.side-column {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.side-bot-wrap {
  position: relative;
  min-height: 520px;
}

.level-card {
  background: rgba(255, 255, 240, 0.94);
  border: 3px solid #C8860A;
  border-radius: 12px;
  box-shadow: 0 6px 16px rgba(180, 100, 0, 0.16);
  color: #3A2800;
}

.level-card {
  padding: 16px 14px;
}

.level-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.level-card p {
  margin: 0 0 8px;
  line-height: 1.4;
  font-size: 16px;
}

.level-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.level-row:last-child {
  margin-bottom: 0;
}

.level-row p {
  margin: 0;
}

.level-action-button {
  border: 2px solid #4F98BE;
  background: rgba(140, 201, 230, 0.16);
  color: #2F6C8B;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
  white-space: nowrap;
}

.level-action-button:hover:not(:disabled) {
  background: rgba(140, 201, 230, 0.28);
  transform: translateY(-1px);
}

.level-action-button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.area-row {
  margin-bottom: 12px;
}

.mini-area-switch {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lesson-actions {
  margin-top: 12px;
  display: flex;
}

.lesson-print-button {
  width: 100%;
  justify-content: center;
  font-size: 14px;
  padding: 9px 14px;
  border-color: #B37708;
  background: linear-gradient(180deg, #FFE085 0%, #F8C83A 100%);
  color: #4A3200;
}

.lesson-print-button:hover:not(:disabled) {
  background: linear-gradient(180deg, #FFE8A8 0%, #FFD75A 100%);
}

.mini-area-button {
  width: 100%;
  border: 2px solid #D29A1F;
  background: #FFF3CA;
  color: #5A3D00;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  padding: 8px 10px;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.mini-area-button:hover {
  background: #FFE7A4;
  transform: translateY(-1px);
}

.mini-area-button.is-selected {
  background: #FFD54A;
  border-color: #B47A03;
}

.topic-badge-wrap {
  margin-top: -16px;
  position: relative;
  z-index: 8;
  display: flex;
  justify-content: flex-start;
  padding-left: 18px;
}

.topic-badge {
  max-width: min(720px, calc(100% - 24px));
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 240, 0.97);
  border: 3px solid #C8860A;
  box-shadow: 0 6px 14px rgba(180, 100, 0, 0.15);
  color: #3A2800;
}

.topic-badge-label {
  font-size: 15px;
  font-weight: 700;
}

.topic-badge-value {
  font-size: 15px;
  font-style: italic;
}

@media (max-width: 768px) {
  .app-container {
    --board-width: min(96vw, 760px);
    --board-min-height: 360px;
    --board-max-height: 360px;
    --board-scale: 1;
    --side-column-width: 100%;
    padding: 12px;
    padding-bottom: 96px;
  }

  .page-logo-wrap {
    margin-bottom: -4px;
  }

  .onboarding-card {
    padding: 18px;
  }

  .onboarding-card p {
    font-size: 16px;
  }

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

  .area-option {
    min-height: 160px;
    padding: 20px 12px;
  }

  .area-icon {
    font-size: 42px;
  }

  .area-title {
    font-size: 20px;
  }

  .page-logo {
    width: min(285px, 72vw);
  }

  .whiteboard-stage {
    padding-bottom: 8px;
  }

  .progress-badge {
    top: -14px;
    left: 14px;
    padding: 8px 14px;
    font-size: 13px;
  }

  .whiteboard-layout {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .side-bot-wrap {
    min-height: 230px;
  }

  .side-column {
    gap: 10px;
  }

  .topic-badge-wrap {
    margin-top: -12px;
    padding-left: 12px;
  }

  .topic-badge {
    max-width: calc(100% - 12px);
    padding: 8px 12px;
    border-width: 2px;
  }

  .topic-badge-label,
  .topic-badge-value {
    font-size: 13px;
  }

  .level-card {
    width: 100%;
    padding: 12px 10px;
  }

  .level-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 8px;
  }

  .level-card p {
    font-size: 14px;
  }

  .mini-area-switch {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .mini-area-button {
    font-size: 13px;
    padding: 8px;
  }
}

@media (max-width: 768px) {
  .scene {
    min-height: 0;
    padding: 4px;
  }
}

@media (max-width: 480px) {
  .app-container {
    --board-width: 100%;
    --board-min-height: 320px;
    --board-max-height: 320px;
    --layout-gap: 8px;
    padding: 8px;
    padding-bottom: 84px;
  }

  .main-content {
    width: 100%;
  }

  .progress-badge {
    left: 10px;
    top: -12px;
    font-size: 12px;
    padding: 7px 10px;
    max-width: calc(100% - 20px);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .topic-badge-wrap {
    margin-top: -10px;
    padding-left: 8px;
  }

  .topic-badge {
    max-width: calc(100% - 8px);
  }

  .lesson-actions {
    margin-top: 10px;
  }

  .lesson-print-button {
    font-size: 13px;
    padding: 8px 10px;
  }
}