:root {
  --paper: #f8f0df;
  --paper-strong: #fff9ed;
  --ink: #2e261c;
  --muted: #75644f;
  --line: #dcc9a7;
  --green: #4d8b5c;
  --green-dark: #2f6442;
  --amber: #d7a94c;
  --lost: #c66d55;
  --radius: 8px;
  --shadow: 0 14px 36px rgba(79, 56, 25, 0.13);
}

* { box-sizing: border-box; }

html,
body {
  min-width: 0;
  overflow-x: hidden;
}

body {
  margin: 0;
  background: radial-gradient(circle at top left, rgba(255, 246, 210, 0.8), transparent 34rem), var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

button,
textarea,
select { font: inherit; }

a { color: var(--green-dark); }

.site-header,
.site-footer {
  width: min(100% - 28px, 1500px);
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0 10px;
}

.brand {
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.site-nav,
.site-footer nav,
.button-row,
.next-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.site-nav a,
.site-footer a {
  color: var(--muted);
  font-size: 0.92rem;
  text-decoration: none;
}

.page-shell {
  display: grid;
  grid-template-columns: minmax(150px, 190px) minmax(0, 1040px) minmax(150px, 190px);
  gap: 24px;
  width: min(100% - 28px, 1500px);
  margin: 0 auto 28px;
  align-items: start;
}

.ad-rail {
  position: sticky;
  top: 14px;
  min-height: 320px;
  border: 1px dashed #ceb98f;
  border-radius: var(--radius);
  color: #9a835f;
  display: grid;
  place-items: center;
  background: rgba(255, 249, 235, 0.58);
  font-size: 0.9rem;
}

.main-column { min-width: 0; }

.mode-title,
.control-bar,
.input-panel,
.metrics-grid,
.result-panel,
.related-panel,
.prompt-list {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 249, 237, 0.92);
  box-shadow: var(--shadow);
}

.mode-title {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  padding: 14px 18px;
  margin-bottom: 10px;
}

.eyebrow {
  margin: 0;
  color: var(--green-dark);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.mode-title h1 {
  margin: 0 0 2px;
  font-size: clamp(1.55rem, 2.5vw, 2.2rem);
  line-height: 1.08;
}

.mode-title p:last-child {
  margin: 0;
  color: var(--muted);
}

.control-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 12px;
  margin-bottom: 12px;
}

.control-field,
.toggle-field {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.93rem;
}

select,
textarea {
  border: 1px solid #cbb58c;
  border-radius: 7px;
  background: #fffdf6;
  color: var(--ink);
}

select {
  min-height: 36px;
  padding: 0 28px 0 10px;
}

button {
  min-height: 38px;
  padding: 0 15px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 700;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.56;
}

.primary-button {
  background: var(--green);
  color: #fffdf7;
  border-color: var(--green-dark);
}

.ghost-button {
  background: #fff8e9;
  color: var(--green-dark);
  border-color: #cbb58c;
}

.memory-panel {
  overflow: hidden;
  border: 1px solid #ccb887;
  border-radius: var(--radius);
  background: linear-gradient(160deg, #fff8e8, #efe0b9 72%, #f7eedc);
  box-shadow: 0 18px 42px rgba(102, 83, 45, 0.17);
}

.status-strip {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 50px;
  padding: 10px 14px;
  color: #342919;
  border-bottom: 1px solid rgba(131, 100, 48, 0.18);
  background: rgba(255, 251, 241, 0.72);
  white-space: normal;
}

.status-strip strong {
  color: var(--green-dark);
  font-size: 0.95rem;
  min-width: max-content;
}

.status-strip span { font-size: 0.92rem; }
.status-strip.is-memorize strong { color: var(--amber); }
.status-strip.is-type strong { color: var(--green-dark); }
.status-strip.is-lost strong { color: var(--lost); }
.status-strip.is-recalled strong,
.status-strip.is-complete strong { color: var(--green-dark); }

.memory-stage {
  position: relative;
  display: grid;
  place-items: center;
  height: clamp(360px, 48vh, 520px);
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(117, 92, 45, 0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(117, 92, 45, 0.08) 1px, transparent 1px),
    radial-gradient(circle at center, #fffaf0, #f2e3c3 68%, #ead8ad);
  background-size: 52px 52px, 52px 52px, auto;
}

.memo-card {
  --card-scale: 1;
  width: min(86%, 800px);
  min-height: 178px;
  display: grid;
  place-items: center;
  gap: 8px;
  padding: 26px;
  text-align: center;
  border: 1px solid #d6bf88;
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.75), rgba(255, 249, 230, 0.88)),
    repeating-linear-gradient(0deg, transparent 0 29px, rgba(167, 138, 85, 0.14) 30px);
  box-shadow: 0 20px 45px rgba(89, 66, 28, 0.16);
  transform: scale(var(--card-scale));
}

.memo-card.is-hidden .memo-text {
  color: transparent;
  text-shadow: none;
}

.memo-card.is-hidden {
  background:
    linear-gradient(135deg, rgba(255, 253, 245, 0.96), rgba(235, 221, 190, 0.96)),
    repeating-linear-gradient(45deg, rgba(135, 105, 55, 0.08) 0 8px, transparent 8px 16px);
}

.memo-label {
  margin: 0;
  color: var(--green-dark);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.memory-panel.is-memorize .memo-label {
  color: var(--amber);
  font-size: clamp(1.15rem, 2.6vw, 1.75rem);
  letter-spacing: 0.04em;
}

.memory-panel.is-type .memo-label {
  color: var(--green-dark);
  font-size: clamp(1.05rem, 2.2vw, 1.45rem);
  letter-spacing: 0.04em;
}

.memo-text {
  max-width: 100%;
  margin: 0;
  color: #2e261c;
  font-size: clamp(1.35rem, 3.2vw, 2.55rem);
  font-weight: 800;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.stage-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 8px;
  text-align: center;
  color: #342919;
  pointer-events: none;
  background: rgba(255, 248, 228, 0.68);
}

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

.stage-overlay strong {
  font-size: clamp(1.35rem, 4vw, 2.65rem);
  letter-spacing: 0.08em;
}

.memory-meter {
  --memory-left: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 52px;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 9px 14px 12px;
  color: #342919;
  border-top: 1px solid rgba(131, 100, 48, 0.16);
  background: rgba(255, 251, 241, 0.72);
}

.memory-meter[hidden] { display: none; }

.memory-meter span,
.memory-meter strong {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.memory-meter strong { justify-self: end; }

.memory-meter-track {
  min-width: 0;
  height: 10px;
  overflow: hidden;
  border: 1px solid rgba(77, 139, 92, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.65);
  box-shadow: inset 0 0 12px rgba(80, 82, 62, 0.12);
}

.memory-meter-track i {
  display: block;
  width: var(--memory-left);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #72b981, #c3dda1);
  transition: width 120ms linear, background 220ms ease;
}

.memory-meter.is-mid .memory-meter-track i {
  background: linear-gradient(90deg, #d7a94c, #c3dda1);
}

.memory-meter.is-low .memory-meter-track i {
  background: linear-gradient(90deg, #c66d55, #d7a94c);
}

.input-panel {
  margin-top: 12px;
  padding: 12px;
}

.input-panel.is-locked {
  background: linear-gradient(180deg, rgba(255, 249, 237, 0.88), rgba(239, 229, 205, 0.86));
}

.input-panel.is-ready {
  box-shadow: 0 0 0 3px rgba(77, 139, 92, 0.16), var(--shadow);
}

.input-heading {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.input-heading h2 {
  margin: 0;
  font-size: 1rem;
}

.input-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.phase-note {
  margin: -2px 0 8px;
  color: var(--green-dark);
  font-size: 0.92rem;
  font-weight: 800;
}

.input-panel.is-locked .phase-note {
  color: #9a6f22;
}

.input-panel.is-locked textarea {
  color: #8a765b;
  background: repeating-linear-gradient(135deg, #f5ecd9 0 8px, #fff8e9 8px 16px);
  border-color: #d9c392;
}

.input-panel.is-ready textarea {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(77, 139, 92, 0.14);
}

#typing-input {
  display: block;
  width: 100%;
  min-height: 74px;
  padding: 12px;
  line-height: 1.45;
  resize: vertical;
  font-size: 1rem;
}

.next-row {
  justify-content: flex-end;
  margin-top: 10px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  padding: 12px;
  margin-top: 12px;
}

.metrics-grid.is-complete { display: none; }

.metric-card {
  min-width: 0;
  padding: 10px;
  border: 1px solid #eadab9;
  border-radius: 7px;
  background: #fffdf7;
}

.metric-card span,
.result-grid span,
.share-box label {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.metric-card strong,
.result-grid strong {
  display: block;
  margin: 2px 0;
  font-size: 1.2rem;
}

.metric-card small,
.result-grid small {
  color: #8a765b;
  font-size: 0.76rem;
}

.result-panel,
.related-panel,
.prompt-list {
  margin-top: 14px;
  padding: 16px;
}

.result-panel.is-highlight {
  outline: 3px solid rgba(77, 139, 92, 0.28);
}

.result-panel h2,
.related-panel h2 {
  margin: 3px 0 6px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0;
}

.result-grid div {
  padding: 10px;
  border-radius: 7px;
  background: #fffdf6;
  border: 1px solid #eadab9;
}

.share-box textarea {
  width: 100%;
  margin: 8px 0 10px;
  padding: 10px;
  resize: vertical;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.related-grid > * {
  padding: 12px;
  border: 1px solid #eadab9;
  border-radius: 7px;
  background: #fffdf7;
  text-decoration: none;
}

.prompt-list summary {
  cursor: pointer;
  font-weight: 800;
}

.prompt-list ul {
  margin: 12px 0 0;
  padding-left: 1.2rem;
}

.site-footer {
  padding: 18px 0 28px;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer p { margin: 0 0 8px; }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 1180px) {
  .page-shell {
    grid-template-columns: minmax(0, 1fr);
    width: min(100% - 24px, 980px);
  }

  .ad-rail { display: none; }
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .mode-title {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 12px;
  }

  .control-bar { align-items: stretch; }

  .control-field,
  .toggle-field,
  .control-bar button {
    width: 100%;
    justify-content: space-between;
  }

  .control-field select {
    flex: 1;
    max-width: 180px;
  }

  .status-strip {
    gap: 5px 9px;
    align-items: flex-start;
    flex-wrap: wrap;
    min-height: 58px;
  }

  .status-strip strong { width: 100%; }

  .memory-stage { height: 318px; }

  .memo-card {
    width: 94%;
    min-height: 150px;
    padding: 18px;
  }

  .metrics-grid,
  .result-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }

  #typing-input {
    min-height: 72px;
    font-size: 16px;
  }
}

@media (max-width: 420px) {
  .site-header,
  .site-footer,
  .page-shell {
    width: min(100% - 18px, 100%);
  }

  .memory-stage { height: 300px; }
}