:root {
  --ink: #202B3D;
  --ink-soft: #4B5566;
  --paper: #F1EEE5;
  --paper-raised: #FAF8F3;
  --line: #D7D0BF;
  --stamp: #B23B2E;
  --stamp-dark: #8E2E24;
  --brass: #A9863E;
  --font-serif: "Noto Serif KR", serif;
  --font-sans: "Pretendard", -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: inherit; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
}
.brand {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  letter-spacing: 0.02em;
}
.site-nav { display: flex; gap: 28px; }
.site-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  color: var(--ink-soft);
}
.site-nav a:hover { color: var(--stamp); }

/* Hero */
.hero { padding: 72px 0 0; position: relative; }
.hero-inner { padding-bottom: 56px; }
.field-label {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0 0 18px;
}
.field-label span { color: var(--brass); }
.hero h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  line-height: 1.35;
  margin: 0 0 22px;
}
.hero-desc {
  max-width: 520px;
  color: var(--ink-soft);
  font-size: 1.02rem;
  margin: 0 0 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-rule {
  height: 1px;
  background: var(--line);
  max-width: 760px;
  margin: 0 auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 22px;
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 3px;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: var(--font-sans);
}
.btn-ghost {
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}
.btn-ghost:hover { background: var(--paper-raised); }
.btn-stamp {
  background: var(--stamp);
  color: #fff;
  border: 2px solid var(--stamp-dark);
  font-weight: 600;
  padding: 13px 28px;
  border-radius: 3px;
}
.btn-stamp:hover { background: var(--stamp-dark); }
.btn-stamp:disabled { opacity: 0.6; cursor: default; }

/* Sections */
.section { padding: 64px 0; }
.section-muted { background: var(--paper-raised); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { margin-bottom: 36px; }
.section-head h2 {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 600;
  margin: 0 0 10px;
}
.section-sub {
  color: var(--ink-soft);
  margin: 0;
  max-width: 540px;
}

/* Item grid (8 항목 선택) */
.item-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.item-card {
  text-align: left;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 16px 18px;
  cursor: pointer;
  font-family: var(--font-sans);
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color 0.15s ease;
}
.item-card:hover { border-color: var(--brass); }
.item-card.is-selected {
  border-color: var(--stamp);
  box-shadow: inset 0 0 0 1px var(--stamp);
}
.item-card-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
}
.item-card-desc {
  font-size: 0.86rem;
  color: var(--ink-soft);
}

/* Generator form */
.review-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  padding: 28px;
  border-radius: 4px;
}
.review-form label {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-top: 12px;
}
.review-form label:first-of-type { margin-top: 0; }
.review-form input,
.review-form select,
.review-form textarea {
  font-family: var(--font-sans);
  font-size: 0.96rem;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  color: var(--ink);
  resize: vertical;
}
.review-form input:focus,
.review-form select:focus,
.review-form textarea:focus {
  outline: 2px solid var(--brass);
  outline-offset: 1px;
}
.review-form button { margin-top: 20px; align-self: flex-start; }

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-size: 0.92rem;
  color: var(--ink);
  cursor: pointer;
}
.checkbox-label input {
  width: 16px;
  height: 16px;
  accent-color: var(--stamp);
  cursor: pointer;
}

/* Shared fields above tabs */
.shared-fields {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}
.shared-fields label {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-top: 12px;
}
.shared-fields label:first-child { margin-top: 0; }
.shared-fields input,
.shared-fields select {
  font-family: var(--font-sans);
  font-size: 0.96rem;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  color: var(--ink);
}
.shared-fields input:focus,
.shared-fields select:focus {
  outline: 2px solid var(--brass);
  outline-offset: 1px;
}

/* Tabs */
.tab-bar {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
}
.tab-btn {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 10px 4px;
  margin-right: 20px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--ink-soft);
  cursor: pointer;
}
.tab-btn.is-active {
  color: var(--ink);
  border-bottom-color: var(--stamp);
  font-weight: 600;
}
.tab-panel[hidden] { display: none; }

/* Brainstorm (소재 찾기) */
.brainstorm-box {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  padding: 28px;
  border-radius: 4px;
}
.brainstorm-intro {
  color: var(--ink-soft);
  font-size: 0.92rem;
  margin: 0 0 18px;
}
.brainstorm-chat { margin-top: 22px; }
.brainstorm-history {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 18px;
}
.brainstorm-log-q {
  font-family: var(--font-serif);
  font-size: 0.94rem;
  color: var(--ink);
  margin: 0 0 4px;
}
.brainstorm-log-a {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0 0 0 14px;
  border-left: 2px solid var(--line);
  padding-left: 10px;
}
.brainstorm-question {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--stamp-dark);
  margin: 0 0 12px;
}
#brainstorm-answer {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 3px;
  resize: vertical;
  margin-bottom: 12px;
}
.brainstorm-summary-box {
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.brainstorm-summary {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 16px;
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.7;
  margin: 0 0 16px;
}

.review-status {
  margin-top: 16px;
  color: var(--ink-soft);
  font-size: 0.9rem;
  min-height: 1.2em;
}

/* Generator result: draft + questions */
.generator-result {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.draft-box h3,
.review-result h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin: 0 0 12px;
}
.draft-subtitle {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--stamp-dark);
  border-left: 3px solid var(--brass);
  padding: 4px 0 4px 14px;
  margin: 0 0 16px;
}

.subtitle-options { margin-bottom: 20px; }
.subtitle-options-label {
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin: 0 0 10px;
}
.subtitle-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.subtitle-option {
  text-align: left;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 12px 16px;
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--ink);
  cursor: pointer;
}
.subtitle-option:hover { border-color: var(--brass); }
.subtitle-option.is-selected {
  border-color: var(--stamp);
  box-shadow: inset 0 0 0 1px var(--stamp);
  color: var(--stamp-dark);
}
.draft-textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 0.96rem;
  line-height: 1.7;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  color: var(--ink);
  resize: vertical;
}
.draft-note {
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin: 8px 0 0;
}
.draft-char-count {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin: 8px 0 0;
  text-align: right;
}
.draft-char-count.is-over { color: var(--stamp); font-weight: 600; }

.redpen-list { list-style: none; margin: 0; padding: 0; }
.redpen-item {
  display: flex;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.redpen-item:last-child { border-bottom: 1px solid var(--line); }
.redpen-bar {
  flex: none;
  width: 3px;
  background: var(--stamp);
  border-radius: 2px;
}
.redpen-quote {
  font-size: 0.88rem;
  color: var(--ink-soft);
  font-style: italic;
  margin: 0 0 6px;
}
.redpen-question {
  font-weight: 600;
  color: var(--stamp-dark);
  margin: 0 0 4px;
  font-family: var(--font-serif);
}
.redpen-reason {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  color: var(--ink-soft);
  font-size: 0.85rem;
}

/* Mobile */
@media (max-width: 640px) {
  .item-grid { grid-template-columns: 1fr; }
  .header-inner { flex-direction: row; gap: 12px; }
  .site-nav { gap: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}