/* Layout styles - Grid for iPad landscape/portrait */

.app-container {
  display: grid;
  min-height: 100vh;
  padding: var(--spacing-md);
  gap: var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

/* Portrait layout (default - mobile/tablet portrait) */
.app-container {
  grid-template-areas:
    "header"
    "progress"
    "problem"
    "keypad"
    "buddy";
  grid-template-rows: auto auto 1fr auto auto;
  grid-template-columns: 1fr;
}

/* Header area */
.app-header {
  grid-area: header;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
}

.app-title {
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  font-weight: 700;
}

.settings-btn {
  width: var(--touch-target-min);
  height: var(--touch-target-min);
  border: none;
  background: var(--color-bg-card);
  border-radius: var(--radius-round);
  font-size: var(--font-size-lg);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.settings-btn:hover,
.settings-btn:focus {
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

/* Progress area */
.progress-area {
  grid-area: progress;
  padding: var(--spacing-sm);
}

/* Problem area */
.problem-area {
  grid-area: problem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

/* Keypad area */
.keypad-area {
  grid-area: keypad;
  display: flex;
  justify-content: center;
  padding: var(--spacing-md);
}

/* Buddy area */
.buddy-area {
  grid-area: buddy;
  min-height: 100px;
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

/* Landscape layout for tablets */
@media (min-width: 768px) and (orientation: landscape) {
  .app-container {
    grid-template-areas:
      "header header"
      "progress progress"
      "problem keypad"
      "buddy keypad";
    grid-template-rows: auto auto 1fr auto;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
  }

  .problem-area {
    justify-content: center;
  }

  .keypad-area {
    align-items: center;
  }

  .buddy-area {
    min-height: 120px;
  }
}

/* Large landscape (iPad Pro, desktop) */
@media (min-width: 1024px) and (orientation: landscape) {
  .app-container {
    grid-template-areas:
      "header header header"
      "buddy problem keypad"
      "buddy progress keypad";
    grid-template-rows: auto 1fr auto;
    grid-template-columns: 200px 1fr 400px;
    padding: var(--spacing-lg);
  }

  .buddy-area {
    align-items: center;
    justify-content: flex-start;
    min-height: auto;
  }
}

/* Answer input display */
.answer-display {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-xl);
  min-width: 200px;
  text-align: right;
  font-size: var(--font-size-xxl);
  font-weight: 700;
  box-shadow: var(--shadow-md);
  margin-top: var(--spacing-lg);
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.answer-display.empty {
  color: var(--color-text-muted);
}

.answer-display.correct {
  animation: correctPulse 0.5s ease;
  border: 3px solid var(--color-success);
}

.answer-display.wrong {
  animation: wrongShake 0.5s ease;
  border: 3px solid var(--color-error);
}

@keyframes correctPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes wrongShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

/* Feedback message */
.feedback-message {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--color-bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  text-align: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.feedback-message.visible {
  opacity: 1;
  pointer-events: auto;
}

.feedback-message.celebration {
  animation: celebrationBounce 0.6s ease;
}

@keyframes celebrationBounce {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.1); }
}