/* ═════════════════════════════════════════════
   KC課題 第1弾 SPA  styles
   K-CLUB既存マニフェストのデザインシステム継承
   ═════════════════════════════════════════════ */

:root {
  /* Palette */
  --paper:        #FAF7F0;
  --paper-deep:   #F4EFE3;
  --paper-soft:   #F0EADC;
  --ink:          #2c2628;
  --ink-soft:     #5a4f4f;
  --ink-mute:     #8a7d7c;
  --rule:         rgba(90, 26, 42, 0.55);
  --rule-soft:    rgba(90, 26, 42, 0.18);
  --rule-paper:   #e0d8c4;
  --accent-deep:  #5A1A2A;
  --accent-deep-2:#3f0f1c;
  --accent-weak:  rgba(90, 26, 42, 0.08);
  --gold:         #C9A961;
  --warn-bg:      #FFF4D6;
  --warn-border:  #d9b85c;
  --warn-ink:     #5c4412;
  --err:          #b3261e;

  /* Typography */
  --serif-jp: "Shippori Mincho", "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", serif;
  --serif-en: "Cormorant Garamond", "EB Garamond", "Times New Roman", serif;
  --sans:     "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", sans-serif;

  /* Layout */
  --measure: 680px;
  --leading: 2.0;
  --gutter: 24px;
  --mh-h: 56px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  background: var(--paper);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif-jp);
  font-weight: 400;
  font-size: 17px;
  line-height: var(--leading);
  letter-spacing: 0.03em;
  font-feature-settings: "palt" 1;
  line-break: strict;
  word-break: normal;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
::selection { background: rgba(90,26,42,.18); color: var(--accent-deep-2); }
a { color: inherit; }

/* ───── マストヘッド ───── */
.masthead {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--mh-h);
  z-index: 50;
  display: flex;
  align-items: center;
  padding: 0 var(--gutter);
  background: rgba(250, 247, 240, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule-soft);
}
.masthead .mh-logo {
  display: flex; align-items: center; gap: 10px;
}
.masthead .mh-logo img {
  width: 28px; height: 28px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 1px var(--rule-soft);
}
.masthead .mh-title {
  font-family: var(--serif-jp);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.18em;
  color: var(--accent-deep);
  margin-left: 14px;
  flex: 1;
}
.masthead .mh-spacer { width: 28px; }

/* ───── 進捗バー ───── */
.progress {
  position: fixed;
  top: var(--mh-h); left: 0;
  height: 2px;
  background: var(--accent-deep);
  width: 0%;
  z-index: 49;
  transition: width .3s ease;
  box-shadow: 0 1px 0 rgba(90,26,42,0.15);
}

/* ───── Main ───── */
main {
  padding-top: var(--mh-h);
}

/* ───── ページ表示制御 ───── */
.page {
  display: none;
  min-height: calc(100vh - var(--mh-h));
  padding: 48px var(--gutter) 96px;
}
.page.active { display: block; animation: pageIn 0.35s ease-out; }

@keyframes pageIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.page-inner {
  max-width: var(--measure);
  margin: 0 auto;
}

/* ───── ページ見出し ───── */
.kicker {
  font-family: var(--serif-en);
  font-size: 11px;
  letter-spacing: 0.36em;
  color: var(--accent-deep);
  text-transform: uppercase;
  margin-bottom: 22px;
  font-weight: 500;
}
.kicker::before {
  content: "";
  display: inline-block; width: 24px; height: 1px;
  background: var(--accent-deep); vertical-align: middle;
  margin-right: 12px; transform: translateY(-2px);
}
.page-title {
  font-family: var(--serif-jp);
  font-weight: 500;
  font-size: clamp(26px, 4.6vw, 36px);
  line-height: 1.5;
  letter-spacing: 0.05em;
  margin: 0 0 8px;
  color: var(--ink);
}

/* ───── 本文要素 ───── */
p { margin: 0 0 1.4em; color: var(--ink); }
p.lede {
  font-size: 19px;
  letter-spacing: 0.04em;
  color: var(--ink);
}
p.strong { font-weight: 600; color: var(--ink); }
p.dim { color: var(--ink-mute); font-size: 15px; }
.dim { color: var(--ink-mute); }
.note { font-size: 13px; color: var(--ink-mute); }

p.signature-line {
  font-family: var(--serif-jp);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.06em;
  color: var(--accent-deep);
  margin: 1.4em 0;
}

/* ───── 章境界の細い罫線 ───── */
.sep {
  width: 80px;
  height: 1px;
  background: var(--accent-deep);
  margin: 40px auto;
  border: 0;
  opacity: 0.7;
}
@media (max-width: 600px) {
  .sep { margin: 32px auto; }
}

/* ───── 強調ライン ───── */
.key-line {
  border-left: 2px solid var(--accent-deep);
  padding: 6px 0 6px 18px;
  margin: 1.4em 0 1.6em;
  color: var(--accent-deep);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.03em;
  line-height: 1.85;
}

/* ───── 箇条書きリスト ───── */
.list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.6em;
}
.list li {
  position: relative;
  padding: 8px 0 8px 22px;
  line-height: 1.7;
  border-bottom: 1px dashed var(--rule-soft);
}
.list li:last-child { border-bottom: 0; }
.list li::before {
  content: "";
  position: absolute;
  left: 4px; top: 16px;
  width: 6px; height: 6px;
  background: var(--accent-deep);
  border-radius: 50%;
}

/* ───── 番号付きブロック ───── */
.numbered {
  margin: 1.6em 0 1.6em;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.numbered-item {
  display: flex;
  gap: 16px;
  padding: 18px;
  background: var(--paper-soft);
  border-left: 3px solid var(--accent-deep);
  border-radius: 2px;
}
.numbered-item .num {
  flex-shrink: 0;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--accent-deep);
  color: #fff;
  font-family: var(--serif-en);
  font-weight: 500;
  font-size: 17px;
  display: flex; align-items: center; justify-content: center;
  letter-spacing: 0;
}
.numbered-item .num-title {
  font-weight: 600;
  font-size: 17px;
  color: var(--ink);
  margin-bottom: 6px;
}
.numbered-item .num-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ───── 例ブロック ───── */
.example {
  background: var(--paper-deep);
  padding: 22px 22px 14px;
  border-radius: 4px;
  margin: 1.6em 0;
  border-left: 3px solid var(--gold);
}
.example-label {
  font-family: var(--serif-en);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
  font-weight: 500;
}
.example p {
  font-size: 15px;
  line-height: 1.95;
  color: var(--ink-soft);
  margin-bottom: 0.8em;
}
.example p:last-child { margin-bottom: 0; }

/* ───── フォーム要素 ───── */
.field {
  margin: 1.6em 0;
}
.field-label {
  display: block;
  font-family: var(--serif-jp);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--accent-deep);
  margin-bottom: 10px;
}
.field-input,
.field-textarea {
  width: 100%;
  border: 1px solid var(--rule-soft);
  background: #fff;
  padding: 14px 16px;
  font-family: var(--serif-jp);
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink);
  border-radius: 2px;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
  -webkit-appearance: none;
}
.field-input:focus,
.field-textarea:focus {
  border-color: var(--accent-deep);
  box-shadow: 0 0 0 3px rgba(90, 26, 42, 0.08);
}
.field-input::placeholder,
.field-textarea::placeholder {
  color: var(--ink-mute);
  opacity: 0.7;
}
.field-textarea {
  resize: vertical;
  min-height: 220px;
}
.field-help {
  margin-top: 6px;
  font-size: 12px;
  color: var(--err);
  min-height: 16px;
}
.field-note {
  margin-top: 6px;
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}
.field-meta {
  margin-top: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--ink-mute);
}
.autosave { font-family: var(--sans); letter-spacing: 0.06em; }
.autosave.saved { color: var(--accent-deep); }
.char-count {
  font-family: var(--sans);
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  transition: color 0.2s ease;
}
.char-count.ok { color: var(--accent-deep); font-weight: 600; }
.char-count.over { color: var(--accent-deep); }

/* ───── CTA ───── */
.cta-wrap {
  margin: 32px auto 0;
  text-align: center;
}
.cta-wrap-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-width: 240px;
  padding: 18px 30px;
  background: var(--accent-deep);
  color: #fff;
  font-family: var(--serif-jp);
  font-weight: 500;
  font-size: 16px;
  letter-spacing: 0.2em;
  text-indent: 0.2em;
  text-decoration: none;
  border: 1px solid var(--accent-deep);
  border-radius: 2px;
  cursor: pointer;
  box-shadow:
    0 1px 0 rgba(0,0,0,.04),
    0 14px 32px -16px rgba(90,26,42,.45);
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, opacity .2s ease;
}
.cta:hover:not(:disabled) {
  background: var(--accent-deep-2);
  transform: translateY(-1px);
  box-shadow:
    0 1px 0 rgba(0,0,0,.04),
    0 20px 40px -18px rgba(90,26,42,.55);
}
.cta:active:not(:disabled) {
  transform: translateY(0);
}
.cta:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.cta .arrow {
  font-family: var(--serif-en);
  font-style: italic;
  letter-spacing: 0;
  text-indent: 0;
  font-size: 17px;
}
.cta-secondary {
  background: transparent;
  color: var(--accent-deep);
  border: 1px solid var(--accent-deep);
  box-shadow: none;
  min-width: 120px;
}
.cta-secondary:hover:not(:disabled) {
  background: var(--accent-weak);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px -4px rgba(90, 26, 42, 0.18);
}
.cta-note {
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
}

/* ───── 確認画面のレビューブロック ───── */
.review-block {
  background: #fff;
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  margin-bottom: 18px;
  overflow: hidden;
}
.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--paper-soft);
  border-bottom: 1px solid var(--rule-soft);
}
.review-title {
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--accent-deep);
}
.review-edit {
  background: transparent;
  border: 1px solid var(--accent-deep);
  color: var(--accent-deep);
  font-family: var(--serif-jp);
  font-size: 12px;
  padding: 4px 12px;
  letter-spacing: 0.1em;
  border-radius: 2px;
  cursor: pointer;
  transition: background .2s ease;
}
.review-edit:hover {
  background: var(--accent-weak);
}
.review-body {
  padding: 16px;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.85;
  font-size: 15px;
  color: var(--ink-soft);
  min-height: 22px;
}
.review-body:empty::before {
  content: "(未入力)";
  color: var(--ink-mute);
  font-style: italic;
}

/* ───── 送信ステータス ───── */
.submit-status {
  margin-top: 18px;
  min-height: 22px;
  font-size: 14px;
  text-align: center;
  letter-spacing: 0.08em;
}
.submit-status.loading { color: var(--ink-mute); }
.submit-status.success { color: var(--accent-deep); font-weight: 600; }
.submit-status.error { color: var(--err); font-weight: 600; }

/* ───── 閲覧URLボックス(page-7末尾) ───── */
.view-link-box {
  background: var(--paper-soft);
  border-left: 3px solid var(--gold);
  padding: 18px 20px;
  margin: 24px 0;
  border-radius: 2px;
}
.view-link-label {
  font-family: var(--serif-en);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
  font-weight: 500;
}
.view-link {
  display: block;
  word-break: break-all;
  font-size: 13px;
  color: var(--accent-deep);
  text-decoration: underline;
  margin-bottom: 12px;
  line-height: 1.7;
}
.view-link:hover { color: var(--accent-deep-2); }
.view-link-note {
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.85;
}

/* ───── 閲覧モード(page-view) ───── */
.view-meta {
  display: flex;
  gap: 14px;
  align-items: baseline;
  margin: 14px 0 24px;
  font-size: 13px;
}
.view-meta-label {
  font-family: var(--serif-en);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.view-meta-value {
  color: var(--ink-soft);
}
.view-block {
  background: #fff;
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  margin-bottom: 18px;
  overflow: hidden;
}
.view-block-title {
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--accent-deep);
  padding: 12px 16px;
  background: var(--paper-soft);
  border-bottom: 1px solid var(--rule-soft);
}
.view-block-body {
  padding: 16px;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.95;
  font-size: 15px;
  color: var(--ink-soft);
  min-height: 22px;
}
.view-block-body:empty::before {
  content: "(未入力)";
  color: var(--ink-mute);
  font-style: italic;
}

/* ───── 署名 ───── */
.sign {
  margin: 48px auto 0;
  text-align: center;
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 15px;
  letter-spacing: 0.18em;
  color: var(--accent-deep);
}

/* ───── モーダル ───── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal.open {
  display: flex;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(44, 38, 40, 0.45);
  backdrop-filter: blur(2px);
}
.modal-card {
  position: relative;
  z-index: 1;
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  max-width: 480px;
  width: 100%;
  padding: 28px;
  box-shadow: 0 24px 60px -20px rgba(0,0,0,0.35);
}
.modal-title {
  font-weight: 600;
  font-size: 17px;
  color: var(--accent-deep);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.modal-body {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
  margin-bottom: 20px;
}
.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}
.modal-btn {
  padding: 10px 20px;
  border-radius: 2px;
  font-family: var(--serif-jp);
  font-size: 14px;
  letter-spacing: 0.1em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .2s ease, color .2s ease;
}
.modal-btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border-color: var(--rule-soft);
}
.modal-btn-ghost:hover { background: var(--paper-soft); }
.modal-btn-primary {
  background: var(--accent-deep);
  color: #fff;
  border-color: var(--accent-deep);
}
.modal-btn-primary:hover { background: var(--accent-deep-2); }

/* ───── レスポンシブ ───── */
@media (max-width: 600px) {
  body { font-size: 16px; }
  .page { padding: 32px 18px 80px; }
  .page-title { font-size: 24px; }
  p.lede { font-size: 17px; }
  .key-line { font-size: 17px; padding-left: 14px; }
  .cta {
    min-width: 0;
    width: 100%;
    padding: 16px 22px;
    font-size: 15px;
    letter-spacing: 0.16em;
    text-indent: 0.16em;
  }
  .cta-wrap-row { flex-direction: column-reverse; }
  .cta-wrap-row .cta-secondary { width: 100%; }
  .field-input, .field-textarea {
    font-size: 16px;
    padding: 12px 14px;
  }
  .numbered-item {
    flex-direction: column;
    gap: 10px;
    padding: 14px;
  }
  .masthead .mh-title { font-size: 12px; margin-left: 10px; }
  .review-header { flex-direction: column; align-items: flex-start; gap: 6px; }
  .review-edit { align-self: flex-end; }
}

@media (prefers-reduced-motion: reduce) {
  .page.active { animation: none; }
  .cta, .review-edit, .modal-btn { transition: none; }
}