:root {
  --color-bg: #f5f1e8;
  --color-surface: #fffdf8;
  --color-ink: #2f2a20;
  --color-ink-soft: #5b5344;
  --color-primary: #3f7d4f;
  --color-primary-dark: #2c5a38;
  --color-accent: #c97b3d;
  --color-border: #e2d9c4;
  --color-danger: #b3452f;
  --color-warn: #c98b2e;
  --color-ok: #3f7d4f;
  --radius: 14px;
}

* {
  box-sizing: border-box;
  min-width: 0;
}

html,
body {
  margin: 0;
  padding: 0;
  max-width: 100%;
  overflow-x: hidden;
  background-color: var(--color-bg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Cg fill='none' stroke='%23ddd0ac' stroke-width='1.6' stroke-linecap='round' opacity='0.6'%3E%3Cpath d='M40 120 L40 90'/%3E%3Cpath d='M40 94 C34 92 32 96 34 100'/%3E%3Cpath d='M40 94 C46 92 48 96 46 100'/%3E%3Cpath d='M40 101 C34 99 32 103 34 107'/%3E%3Cpath d='M40 101 C46 99 48 103 46 107'/%3E%3Cpath d='M100 50 L100 20'/%3E%3Cpath d='M100 24 C94 22 92 26 94 30'/%3E%3Cpath d='M100 24 C106 22 108 26 106 30'/%3E%3Cpath d='M100 31 C94 29 92 33 94 37'/%3E%3Cpath d='M100 31 C106 29 108 33 106 37'/%3E%3C/g%3E%3C/svg%3E");
  background-repeat: repeat;
  color: var(--color-ink);
  font-family: "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", "Segoe UI", sans-serif;
  line-height: 1.7;
}

.app {
  max-width: 760px;
  margin: 0 auto;
  padding: 16px 16px 48px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
}

.topbar h1 {
  font-size: 1.3rem;
  margin: 0;
  color: var(--color-primary-dark);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.subtitle {
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--color-ink-soft);
}

.topbar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.progress-wrap {
  margin-bottom: 12px;
}

.progress {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--color-ink-soft);
}

.progress-step {
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.progress-step.current {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
  font-weight: 600;
  background: #eaf3ec;
}

.progress-step.done {
  color: var(--color-ink-soft);
  text-decoration: line-through;
}

.progress-sep {
  color: var(--color-border);
}

.metrics-wrap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 8px;
  margin-bottom: 20px;
}

.metric {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 8px 10px;
  position: relative;
}

.metric-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  font-size: 0.72rem;
  color: var(--color-ink-soft);
  margin-bottom: 4px;
}

.delta-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 999px;
  animation: deltaFloat 1.6s ease-out forwards;
}

.delta-badge--up {
  background: #e3f0e5;
  color: var(--color-primary-dark);
}

.delta-badge--down {
  background: #fbe6e0;
  color: var(--color-danger);
}

@keyframes deltaFloat {
  0% {
    opacity: 0;
    transform: translateY(4px) scale(0.9);
  }
  15% {
    opacity: 1;
    transform: translateY(-1px) scale(1.05);
  }
  75% {
    opacity: 1;
    transform: translateY(-4px) scale(1);
  }
  100% {
    opacity: 0;
    transform: translateY(-10px) scale(1);
  }
}

@keyframes pulseUp {
  0% {
    box-shadow: 0 0 0 0 rgba(63, 125, 79, 0.45);
  }
  100% {
    box-shadow: 0 0 0 9px rgba(63, 125, 79, 0);
  }
}

@keyframes pulseDown {
  0% {
    box-shadow: 0 0 0 0 rgba(179, 69, 47, 0.45);
  }
  100% {
    box-shadow: 0 0 0 9px rgba(179, 69, 47, 0);
  }
}

.metric--pulse-up {
  animation: pulseUp 0.9s ease-out;
}

.metric--pulse-down {
  animation: pulseDown 0.9s ease-out;
}

.metric-track {
  height: 6px;
  border-radius: 999px;
  background: var(--color-border);
  overflow: hidden;
}

.metric-fill {
  height: 100%;
  background: var(--color-ok);
  transition: width 0.4s ease;
}

.metric--warn .metric-fill {
  background: var(--color-warn);
}

.metric--danger .metric-fill {
  background: var(--color-danger);
}

.metric-value {
  font-size: 0.72rem;
  color: var(--color-ink-soft);
  margin-top: 2px;
  text-align: right;
}

.metric-eval {
  font-size: 0.7rem;
  color: var(--color-ink-soft);
  margin-top: 4px;
  line-height: 1.35;
}

.stage {
  min-height: 260px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 1px 3px rgba(47, 42, 32, 0.06);
  overflow-wrap: break-word;
  word-break: break-word;
}

.card h2 {
  margin-top: 0;
  color: var(--color-primary-dark);
}

.card h3 {
  margin-top: 0;
  color: var(--color-ink);
}

.situation {
  color: var(--color-ink-soft);
}

.options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 18px;
}

.btn {
  font: inherit;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  padding: 12px 16px;
  cursor: pointer;
  background: var(--color-surface);
  color: var(--color-ink);
  text-align: left;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.btn:hover {
  border-color: var(--color-primary);
  background: #f2f7f2;
}

.btn--option {
  width: 100%;
}

.ending-route {
  font-size: 0.85rem;
  color: var(--color-ink-soft);
  margin-top: -8px;
}

.btn--primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  text-align: center;
  font-weight: 600;
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn--ghost {
  background: var(--color-surface);
}

.btn--icon {
  padding: 4px 10px;
}

.quiz-tag {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.feedback-text {
  font-size: 1.02rem;
}

.unlock-note {
  margin-top: 12px;
  padding: 10px 12px;
  background: #f6efe0;
  border: 1px dashed var(--color-accent);
  border-radius: 10px;
  font-size: 0.85rem;
  color: var(--color-ink-soft);
}

.unlock-link {
  display: inline;
  border: none;
  background: none;
  padding: 0;
  margin: 0;
  font: inherit;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: underline;
  cursor: pointer;
}

.unlock-link:hover {
  color: var(--color-primary-dark);
}

.card--ending h2 {
  color: var(--color-accent);
}

.ending-metrics {
  margin: 16px 0;
}

.ending-note {
  color: var(--color-ink-soft);
  font-size: 0.9rem;
}

.ending-advice,
.ending-realworld {
  text-align: left;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 0.88rem;
  margin: 10px 0;
}

.ending-advice {
  background: #eaf3ec;
  color: var(--color-primary-dark);
}

.ending-realworld {
  background: #f6efe0;
  color: var(--color-ink-soft);
}

.achievement-entry {
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
  opacity: 0.6;
}

.achievement-entry--done {
  opacity: 1;
}

.achievement-entry:last-child {
  border-bottom: none;
}

.achievement-head {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.achievement-icon {
  font-size: 1.3rem;
}

.achievement-head h4 {
  margin: 0;
  flex: 1 1 auto;
  color: var(--color-primary-dark);
}

.achievement-status {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--color-border);
  color: var(--color-ink-soft);
  white-space: nowrap;
}

.achievement-entry--done .achievement-status {
  background: var(--color-primary);
  color: #fff;
}

.achievement-entry p {
  margin: 8px 0 0;
  color: var(--color-ink-soft);
  font-size: 0.9rem;
}

.achievement-realworld {
  font-style: italic;
}

.footer {
  margin-top: 32px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-ink-soft);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(47, 42, 32, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 10;
}

.modal-overlay[hidden] {
  display: none;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius);
  max-width: 560px;
  width: 100%;
  max-height: 80vh;
  max-height: 80dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--color-primary-dark);
}

.modal-body {
  padding: 16px 20px;
  overflow-y: auto;
}

.glossary-entry {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

.glossary-entry:last-child {
  border-bottom: none;
}

.glossary-entry h4 {
  margin: 0 0 6px;
  color: var(--color-primary-dark);
}

.glossary-entry p {
  margin: 0;
  color: var(--color-ink-soft);
  font-size: 0.92rem;
}

.glossary-source {
  margin-top: 6px !important;
  font-size: 0.76rem !important;
  color: var(--color-ink-soft);
  opacity: 0.75;
}

.glossary-entry--highlight {
  animation: glossaryHighlight 1.6s ease-out;
  border-radius: 8px;
}

@keyframes glossaryHighlight {
  0% {
    background: #f6efe0;
  }
  100% {
    background: transparent;
  }
}

.glossary-empty {
  color: var(--color-ink-soft);
}

.card-icon {
  font-size: 2.2rem;
  line-height: 1;
  margin-bottom: 8px;
}

.tutorial-skip {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 16px 0;
  font-size: 0.85rem;
  color: var(--color-ink-soft);
  cursor: pointer;
}

.ending-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ending-actions .btn {
  flex: 1 1 auto;
}

.feedback-intro {
  color: var(--color-ink-soft);
}

.feedback-field {
  margin-bottom: 16px;
}

.feedback-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-ink);
}

.feedback-field textarea,
.feedback-field input[type="text"],
.feedback-field input[type="email"] {
  width: 100%;
  font: inherit;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 10px 12px;
  resize: vertical;
  background: var(--color-bg);
  color: var(--color-ink);
}

.feedback-checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.feedback-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-ink);
  cursor: pointer;
}

.feedback-checkbox input {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.rating-group {
  display: flex;
  gap: 8px;
}

.rating-btn {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  color: var(--color-ink-soft);
}

.rating-btn:hover {
  border-color: var(--color-primary);
}

.rating-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.feedback-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0;
}

.feedback-actions .btn {
  flex: 1 1 auto;
}

.feedback-note {
  font-size: 0.78rem;
  color: var(--color-ink-soft);
}

.feedback-status {
  min-height: 1.2em;
  font-size: 0.85rem;
  color: var(--color-danger);
}

.feedback-success {
  text-align: center;
  padding: 12px 0;
}

.feedback-success-icon {
  font-size: 2.4rem;
  margin: 0 0 8px;
}

@media (max-width: 480px) {
  .app {
    padding: 12px 12px 40px;
  }
  .card {
    padding: 16px;
  }
  .topbar h1 {
    font-size: 1.1rem;
  }
  .brand-icon {
    width: 36px;
    height: 36px;
  }
  .card-icon {
    font-size: 1.9rem;
  }
  .rating-group {
    flex-wrap: wrap;
  }
  .rating-btn {
    width: 36px;
    height: 36px;
  }
  .btn {
    padding: 11px 14px;
  }
}

@media (max-width: 360px) {
  .metrics-wrap {
    grid-template-columns: 1fr;
  }
}