.flashcard-app {
  max-width: 62rem;
  padding-top: 4.5rem;
}

.app-header {
  margin-bottom: 2rem;
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.metric-card,
.view-panel,
.card-form,
.settings-card,
.preview-panel,
.activity-panel,
.review-card,
.review-empty {
  background: var(--wa-white);
  border: 1px solid var(--wa-gray-light);
  border-radius: 8px;
}

.metric-card {
  padding: 1rem;
}

.metric-label {
  display: block;
  color: var(--wa-gray);
  font-size: 0.78rem;
  font-weight: 700;
}

.metric-value {
  display: block;
  margin-top: 0.2rem;
  color: var(--wa-ink);
  font-size: 1.65rem;
  line-height: 1.2;
}

.app-tabs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.35rem;
  margin-bottom: 1rem;
  background: var(--wa-white);
  border: 1px solid var(--wa-gray-light);
  border-radius: 8px;
}

.tab-button,
.quiet-button,
.answer-button,
.danger-button,
.import-button {
  min-height: 2.4rem;
  border: 1px solid var(--wa-gray-light);
  border-radius: 6px;
  padding: 0.55rem 0.85rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.flashcard-app .btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.4rem;
  margin: 0;
}

.tab-button {
  flex: 0 0 auto;
  color: var(--wa-ink-light);
  background: var(--wa-bg);
}

.tab-button.is-active {
  color: var(--wa-white);
  border-color: var(--wa-orange);
  background: var(--wa-orange);
}

.quiet-button,
.import-button {
  color: var(--wa-ink);
  background: var(--wa-white);
}

.quiet-button:hover,
.import-button:hover {
  border-color: var(--wa-orange);
}

.danger-button {
  color: #9F1D1D;
  background: #FFF1F1;
  border-color: #F5B6B6;
}

.view-panel {
  display: none;
  padding: 1.25rem;
}

.view-panel.is-active {
  display: block;
}

.panel-heading {
  margin-bottom: 1.25rem;
}

.panel-heading h2,
.activity-heading h3,
.settings-card h3,
.preview-heading h3 {
  margin: 0 0 0.25rem;
  font-size: 1.15rem;
}

.panel-heading p,
.activity-heading p,
.settings-note,
.empty-note {
  margin: 0;
  color: var(--wa-ink-light);
  font-size: 0.9rem;
}

.app-message {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  justify-content: space-between;
  margin: 0 0 1rem;
  padding: 0.75rem 0.9rem;
  color: var(--wa-ink);
  background: var(--wa-orange-pale);
  border: 1px solid var(--wa-orange-light);
  border-radius: 6px;
}

.app-message.is-error {
  background: #FFF1F1;
  border-color: #F5B6B6;
  color: #7F1D1D;
}

.message-close {
  display: none;
  flex: 0 0 auto;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
}

.app-message.is-sticky .message-close {
  display: inline-flex;
}

.home-actions,
.form-actions,
.data-actions,
.preview-heading,
.review-filter,
.card-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: end;
}

.home-actions {
  margin-bottom: 1rem;
}

.activity-panel {
  display: grid;
  gap: 1rem;
  margin-bottom: 1rem;
  padding: 1rem;
}

.activity-heading {
  display: flex;
  gap: 1rem;
  align-items: start;
  justify-content: space-between;
}

.activity-summary {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 0.75rem;
  margin: 0;
}

.activity-summary div {
  min-width: 4.5rem;
}

.activity-summary dt {
  color: var(--wa-gray);
  font-size: 0.72rem;
  font-weight: 700;
}

.activity-summary dd {
  margin: 0;
  color: var(--wa-ink);
  font-size: 0.95rem;
  font-weight: 700;
}

.activity-grid-wrap {
  overflow-x: auto;
  padding: 0.25rem 0 0.2rem;
}

.activity-grid {
  display: grid;
  grid-auto-flow: column;
  grid-template-rows: repeat(7, 0.95rem);
  grid-auto-columns: 0.95rem;
  gap: 0.28rem;
  width: max-content;
}

.activity-day {
  position: relative;
  width: 0.95rem;
  height: 0.95rem;
  border: 1px solid var(--wa-gray-light);
  border-radius: 999px;
  background: var(--wa-bg);
  cursor: pointer;
}

.activity-day[data-level="1"] {
  background: #FFE1A6;
  border-color: #F7BF57;
}

.activity-day[data-level="2"] {
  background: #FFC75C;
  border-color: #F1A928;
}

.activity-day[data-level="3"] {
  background: #FF9F1C;
  border-color: #E58A0B;
}

.activity-day[data-level="4"] {
  background: #DD6B20;
  border-color: #C05621;
}

.activity-day[data-level="1"]::before,
.activity-day[data-level="2"]::before,
.activity-day[data-level="3"]::before,
.activity-day[data-level="4"]::before {
  content: "";
  position: absolute;
  top: -0.12rem;
  left: 0.52rem;
  width: 0.34rem;
  height: 0.18rem;
  border-radius: 999px 0 999px 0;
  background: var(--wa-green);
  transform: rotate(-24deg);
}

.activity-day[data-level="1"]::after,
.activity-day[data-level="2"]::after,
.activity-day[data-level="3"]::after,
.activity-day[data-level="4"]::after {
  content: "";
  position: absolute;
  top: 0.2rem;
  left: 0.2rem;
  width: 0.24rem;
  height: 0.15rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
}

.activity-day.is-selected {
  outline: 2px solid var(--wa-orange);
  outline-offset: 1px;
}

.activity-detail {
  margin: 0;
  color: var(--wa-ink-light);
  font-size: 0.88rem;
}

.deck-list,
.card-list,
.generated-list {
  display: grid;
  gap: 0.75rem;
}

.deck-item,
.managed-card,
.generated-card {
  border: 1px solid var(--wa-gray-light);
  border-radius: 8px;
  padding: 1rem;
  background: var(--wa-bg);
}

.deck-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: center;
}

.deck-title,
.managed-card h3,
.generated-card strong {
  margin: 0;
  font-size: 1rem;
}

.deck-meta,
.managed-meta,
.generated-card p {
  margin: 0.2rem 0 0;
  color: var(--wa-ink-light);
  font-size: 0.85rem;
}

.deck-count {
  color: var(--wa-orange-dark);
  font-weight: 700;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field-label {
  color: var(--wa-ink-light);
  font-size: 0.82rem;
  font-weight: 700;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--wa-gray-light);
  border-radius: 6px;
  padding: 0.65rem 0.75rem;
  color: var(--wa-ink);
  background: var(--wa-white);
  font: inherit;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--wa-orange-light);
  outline-offset: 1px;
}

.form-grid,
.generation-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.generation-layout {
  align-items: start;
}

.card-form,
.settings-card {
  display: grid;
  gap: 0.9rem;
  padding: 1rem;
  margin-bottom: 1rem;
}

.card-tools {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 12rem;
  margin-bottom: 1rem;
}

.managed-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
}

.managed-actions {
  display: flex;
  gap: 0.5rem;
}

.small-button {
  border: 1px solid var(--wa-gray-light);
  border-radius: 6px;
  padding: 0.35rem 0.55rem;
  background: var(--wa-white);
  color: var(--wa-ink);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.small-button:hover {
  border-color: var(--wa-orange);
}

.review-filter {
  margin-bottom: 1rem;
}

.review-empty {
  padding: 1.25rem;
  text-align: center;
}

.review-empty p {
  margin: 0;
  color: var(--wa-ink-light);
}

.review-card {
  padding: 1rem;
}

.review-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
  color: var(--wa-gray);
  font-size: 0.85rem;
  font-weight: 700;
}

.flashcard {
  display: grid;
  place-items: center;
  gap: 0.75rem;
  width: 100%;
  min-height: 18rem;
  padding: 1.25rem;
  border: 2px solid var(--wa-orange-light);
  border-radius: 8px;
  background: var(--wa-orange-pale);
  color: var(--wa-ink);
  cursor: pointer;
}

.card-face-label {
  align-self: end;
  color: var(--wa-orange-dark);
  font-size: 0.8rem;
  font-weight: 700;
}

.card-face-text {
  align-self: start;
  max-width: 38rem;
  white-space: pre-wrap;
  font-size: clamp(1.25rem, 4vw, 2rem);
  font-weight: 700;
  line-height: 1.7;
}

.review-actions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: 0.9rem;
}

.answer-wrong {
  color: #9F1D1D;
  background: #FFF1F1;
  border-color: #F5B6B6;
}

.answer-correct {
  color: var(--wa-white);
  background: var(--wa-green);
  border-color: var(--wa-green);
}

.generator-form {
  display: grid;
  gap: 0.9rem;
  align-self: start;
}

.mode-field {
  display: grid;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  border: 0;
}

.radio-card,
.check-row {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
}

.radio-card {
  padding: 0.75rem;
  border: 1px solid var(--wa-gray-light);
  border-radius: 8px;
  background: var(--wa-white);
}

.radio-card input,
.check-row input,
.generated-card input {
  width: auto;
  margin-top: 0.35rem;
}

.radio-card small {
  display: block;
  color: var(--wa-gray);
  font-size: 0.78rem;
}

.count-field {
  align-content: start;
}

.preview-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  align-self: start;
  max-height: min(72vh, 44rem);
  overflow: hidden;
  padding: 1rem;
}

.preview-heading {
  position: sticky;
  top: 0;
  z-index: 1;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  background: var(--wa-white);
  border-bottom: 1px solid var(--wa-gray-light);
}

.preview-panel .generated-list {
  overflow-y: auto;
  padding-top: 0.75rem;
  padding-right: 0.25rem;
}

.generated-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: start;
}

.import-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.import-button input {
  display: none;
}

@media (max-width: 760px) {
  .flashcard-app {
    padding-top: 4rem;
  }

  .status-strip,
  .form-grid,
  .generation-layout,
  .card-tools,
  .activity-heading,
  .managed-card,
  .review-actions {
    grid-template-columns: 1fr;
  }

  .activity-heading {
    display: grid;
  }

  .activity-summary {
    grid-template-columns: repeat(3, 1fr);
  }

  .metric-card {
    padding: 0.8rem;
  }

  .metric-value {
    font-size: 1.35rem;
  }

  .view-panel {
    padding: 1rem;
  }

  .deck-item {
    grid-template-columns: 1fr;
  }

  .managed-actions {
    justify-content: flex-start;
  }

  .flashcard {
    min-height: 14rem;
  }
}