/**
 * Mobile and tablet overrides. Desktop styles unchanged.
 * Breakpoints: 768px (tablet), 480px (phone).
 */

/* ========== Base layout (768px) ========== */
@media (max-width: 768px) {
  .app {
    padding: 16px;
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
  }

  .app-header {
    flex-wrap: nowrap;
    gap: 0;
    align-items: center;
  }

  .tab-container {
    flex: 1;
    min-width: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    gap: 4px;
  }

  .tab {
    padding: 8px 14px;
    font-size: 1rem;
    min-height: 44px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .app-header > div:last-child {
    display: none !important;
  }

  #darkModeToggle.dark-mode-toggle,
  .dark-mode-toggle {
    display: none !important;
  }
}

/* ========== Base layout (480px) ========== */
@media (max-width: 480px) {
  .app {
    padding: 12px;
    padding-left: max(12px, env(safe-area-inset-left));
    padding-right: max(12px, env(safe-area-inset-right));
  }

  .tab {
    padding: 8px 12px;
    font-size: 0.95rem;
  }
}

/* ========== Arithmetic tab (mobile: stack first number, operator, second number) ========== */
@media (max-width: 768px) {
  .hand-display {
    padding: 16px;
    min-height: 140px;
  }

  .expression-visual {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    gap: 20px;
    font-size: 2.5rem;
    min-height: 80px;
  }

  .expression-visual .item-group {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .expression-visual .operator-display {
    font-size: 2.5rem;
    margin: 0;
    min-height: 0;
    align-self: center;
  }

  .item {
    font-size: 2.5rem;
  }

  .item-count-label {
    font-size: 1.4rem;
  }

  .editor-wrapper .highlights,
  .editor-wrapper textarea {
    padding: 12px;
    font-size: 1.75rem;
  }

  .expression-visual.many-items .item {
    font-size: 1.75rem;
  }

  .expression-visual.many-items .operator-display {
    font-size: 2rem;
    min-height: 0;
  }

  .expression-visual.many-items .item-count-label {
    font-size: 1.2rem;
  }

  .expression-visual.very-many-items .item {
    font-size: 1.25rem;
  }

  .expression-visual.very-many-items .operator-display {
    font-size: 1.5rem;
    min-height: 0;
  }

  .expression-visual.very-many-items .item-count-label {
    font-size: 1rem;
  }

  .expression-visual.extremely-many-items .item {
    font-size: 0.9rem;
  }

  .expression-visual.extremely-many-items .operator-display {
    font-size: 1.25rem;
    min-height: 0;
  }

  .expression-visual.extremely-many-items .item-count-label {
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .hand-display {
    padding: 12px;
    min-height: 120px;
  }

  .expression-visual {
    font-size: 2rem;
    gap: 6px;
    min-height: 60px;
  }

  .item {
    font-size: 2rem;
  }

  .operator-display {
    font-size: 2rem;
    margin: 0 8px;
    min-height: 60px;
  }

  .item-count-label {
    font-size: 1.2rem;
  }

  .editor-wrapper .highlights,
  .editor-wrapper textarea {
    padding: 10px;
    font-size: 1.5rem;
  }

  .expression-visual.many-items .item {
    font-size: 1.5rem;
  }

  .expression-visual.many-items .operator-display {
    font-size: 1.75rem;
    min-height: 50px;
  }

  .expression-visual.very-many-items .item {
    font-size: 1rem;
  }

  .expression-visual.very-many-items .operator-display {
    font-size: 1.25rem;
    min-height: 40px;
  }

  .expression-visual.extremely-many-items .item {
    font-size: 0.8rem;
  }

  .expression-visual.extremely-many-items .operator-display {
    font-size: 1rem;
    min-height: 32px;
  }
}

/* ========== Shapes tab ========== */
@media (max-width: 768px) {
  .shapes-container {
    padding: 16px;
  }

  .shapes-canvas-wrap {
    min-height: 220px;
    margin-bottom: 20px;
  }

  .shapes-arrow {
    width: 48px;
    height: 48px;
    font-size: 1.75rem;
  }

  .shapes-sides-value {
    font-size: 1.75rem;
  }
}

@media (max-width: 480px) {
  .shapes-container {
    padding: 12px;
  }

  .shapes-canvas-wrap {
    min-height: 180px;
    margin-bottom: 16px;
  }

  .shapes-controls {
    gap: 16px;
  }

  .shapes-arrow {
    width: 44px;
    height: 44px;
    font-size: 1.5rem;
  }

  .shapes-sides-value {
    font-size: 1.5rem;
  }
}

/* ========== Angles tab ========== */
@media (max-width: 768px) {
  .angles-container {
    padding: 16px;
    gap: 16px;
  }

  .angles-canvas-wrapper {
    max-width: 100%;
    width: 100%;
    height: auto;
    aspect-ratio: 1;
  }

  .angle-type-name {
    font-size: 1.1rem;
  }

  .angle-value-overlay {
    font-size: 1.35rem;
    top: 8px;
    right: 8px;
  }

  .angle-type-name-overlay {
    font-size: 1.1rem;
    top: 8px;
    left: 8px;
  }

  .angle-btn {
    width: 48px;
    height: 48px;
    font-size: 1.5rem;
  }

  .angles-controls {
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .angles-container {
    padding: 12px;
    gap: 12px;
  }

  .angle-type-name-overlay {
    font-size: 0.95rem;
    top: 6px;
    left: 6px;
  }

  .angle-value-overlay {
    font-size: 1.15rem;
    top: 6px;
    right: 6px;
  }

  .angle-btn {
    width: 48px;
    height: 48px;
    font-size: 1.4rem;
  }
}

/* ========== Fractions tab ========== */
@media (max-width: 768px) {
  .fractions-container {
    padding: 16px;
    gap: 16px;
  }

  .circle-wrapper {
    min-height: 280px;
    padding: 16px;
  }

  .fraction-display {
    font-size: 3rem;
  }

  .fraction-display .fraction-numerator,
  .fraction-display .fraction-denominator {
    font-size: 3rem;
  }

  #fractionsEditor {
    padding: 16px;
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .fractions-container {
    padding: 12px;
    gap: 12px;
  }

  .circle-wrapper {
    min-height: 220px;
  }

  .fraction-display {
    font-size: 2.5rem;
  }

  .fraction-display .fraction-numerator,
  .fraction-display .fraction-denominator {
    font-size: 2.5rem;
  }

  .fraction-display .fraction-line {
    margin: 4px 0;
  }

  #fractionsEditor {
    padding: 12px;
    font-size: 1.75rem;
  }
}

/* ========== Fractions 2 tab ========== */
@media (max-width: 768px) {
  .fractions2-container {
    padding: 16px;
    gap: 16px;
  }

  .fractions2-visual {
    min-height: 220px;
    padding: 16px;
    gap: 12px;
  }

  .fractions2-circle-wrapper {
    width: 100px;
    height: 100px;
  }

  .fractions2-fraction-display {
    font-size: 1.75rem;
  }

  .fractions2-op-display,
  .fractions2-equals {
    font-size: 2rem;
  }

  #fractions2Editor {
    padding: 16px;
    font-size: 1.5rem;
    min-height: 70px;
  }
}

@media (max-width: 480px) {
  .fractions2-container {
    padding: 12px;
    gap: 12px;
  }

  .fractions2-visual {
    min-height: 180px;
    padding: 12px;
    gap: 8px;
  }

  .fractions2-circle-wrapper {
    width: 80px;
    height: 80px;
  }

  .fractions2-fraction-display {
    font-size: 1.5rem;
  }

  .fractions2-op-display,
  .fractions2-equals {
    font-size: 1.75rem;
  }

  .fractions2-operands {
    gap: 8px;
  }

  #fractions2Editor {
    padding: 12px;
    font-size: 1.35rem;
    min-height: 60px;
  }
}

/* ========== Colors tab ========== */
@media (max-width: 768px) {
  .colors-container {
    padding: 16px;
  }

  .colors-grid {
    max-width: 100%;
  }

  .color-swatch {
    width: 80px;
    height: 80px;
  }

  .color-quiz-modal {
    padding: 16px;
  }

  .color-quiz-content {
    max-width: 100%;
    margin: 0 16px;
    padding: 20px;
  }

  .color-quiz-choice {
    width: 88px;
    height: 88px;
  }

  .color-quiz-choices {
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .colors-container {
    padding: 12px;
  }

  .color-swatch {
    width: 70px;
    height: 70px;
  }

  .color-swatch .color-name {
    font-size: 0.85rem;
  }

  .color-quiz-content {
    padding: 16px;
  }

  .color-quiz-prompt {
    font-size: 1rem;
    margin-bottom: 16px;
  }

  .color-quiz-choice {
    width: 80px;
    height: 80px;
  }

  .color-quiz-choices {
    gap: 10px;
  }
}

/* ========== Calendar tab ========== */
@media (max-width: 768px) {
  .calendar-container {
    padding: 16px;
    align-items: flex-start;
  }

  .calendar-carousel {
    flex-direction: column;
    gap: 12px;
    width: 100%;
    max-width: 100%;
  }

  .calendar-carousel-track {
    flex-direction: column;
    align-items: center;
    gap: 16px;
    order: 1;
    width: 100%;
  }

  .calendar-carousel-prev {
    order: 0;
  }

  .calendar-carousel-next {
    order: 2;
  }

  .calendar-carousel-btn {
    width: 44px;
    height: 44px;
    font-size: 1.5rem;
    min-width: 44px;
    min-height: 44px;
  }

  .calendar-month {
    min-width: 220px;
    padding: 12px;
  }

  .calendar-month-title {
    font-size: 1rem;
    margin-bottom: 8px;
  }

  .calendar-grid {
    font-size: 0.8rem;
  }

  .calendar-grid th,
  .calendar-grid td {
    padding: 3px 2px;
  }

  .calendar-today-row {
    display: none;
  }

  .calendar-today-btn {
    padding: 8px 20px;
    font-size: 0.95rem;
  }
}

@media (max-width: 480px) {
  .calendar-container {
    padding: 12px;
  }

  .calendar-carousel {
    gap: 8px;
  }

  .calendar-month {
    min-width: 200px;
    padding: 10px;
  }

  .calendar-month-title {
    font-size: 0.95rem;
  }

  .calendar-grid {
    font-size: 0.75rem;
  }

  .calendar-grid th,
  .calendar-grid td {
    padding: 2px 1px;
  }

  .calendar-today-btn {
    padding: 8px 16px;
    font-size: 0.9rem;
  }
}

/* ========== Planets and Moon tabs ========== */
@media (max-width: 768px) {
  .planets-container,
  .moon-container {
    min-height: 300px;
  }
}

@media (max-width: 480px) {
  .planets-container,
  .moon-container {
    min-height: 250px;
  }

  .planets-container .spacekit__object-label,
  .moon-container .spacekit__object-label {
    font-size: 12px;
    padding: 3px 6px;
  }
}

/* ========== Rakat tab ========== */
@media (max-width: 768px) {
  .rakat-container {
    padding: 16px;
  }

  .rakat-header {
    margin-bottom: 16px;
    gap: 16px;
  }

  .rakat-title {
    font-size: 1.35rem;
  }

  .rakat-icon {
    width: 36px;
    height: 36px;
  }

  .rakat-table-wrap {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .rakat-table {
    font-size: 0.85rem;
  }

  .rakat-table th,
  .rakat-table td {
    padding: 6px 4px;
  }

  .rakat-input {
    min-height: 44px;
    padding: 6px 2px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .rakat-container {
    padding: 12px;
  }

  .rakat-header {
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 12px;
  }

  .rakat-title {
    font-size: 1.2rem;
  }

  .rakat-legend {
    gap: 8px;
  }

  .rakat-legend-item {
    font-size: 0.75rem;
    padding: 3px 8px;
  }

  .rakat-table {
    font-size: 0.8rem;
  }

  .rakat-table th,
  .rakat-table td {
    padding: 5px 3px;
  }

  .rakat-input {
    min-height: 44px;
    padding: 6px 2px;
    font-size: 0.85rem;
  }
}