:root {
  --paper: #f4f1e8;
  --panel: #fffdf6;
  --ink: #1f2421;
  --muted: #63645f;
  --line: #2f332f;
  --danger: #8f1d1d;
  --stamp: #315f52;
  --wash: #d7ddd2;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(31, 36, 33, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 100% 28px;
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
  line-height: 1.65;
}

a { color: var(--stamp); }

.site-header {
  padding: 12px 18px;
  border-bottom: 2px solid var(--line);
  background: var(--panel);
}

.header-bar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.header-bar-nav-only {
  justify-content: flex-end;
}

.header-bar-nav-only nav {
  justify-content: flex-end;
}

.brand {
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
  letter-spacing: 0;
}

.site-header nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.92rem;
}

main {
  max-width: 1060px;
  margin: 0 auto;
  padding: 18px;
}

.site-footer {
  max-width: 1060px;
  margin: 0 auto;
  padding: 4px 18px 22px;
  color: var(--muted);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.86rem;
}

.hero,
.operator-head,
.log-head,
.notice {
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 18px;
  margin-bottom: 14px;
}

.hero {
  position: relative;
  min-height: 154px;
  padding-right: 220px;
  overflow: hidden;
}

.hero-stamp {
  position: absolute;
  top: 18px;
  right: 24px;
  width: 180px;
  height: auto;
  transform: rotate(-7deg);
  opacity: 0.9;
}

.kicker,
.ticket,
.message-label {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.78rem;
  letter-spacing: 0;
  margin: 0 0 6px;
}

h1,
h2 {
  margin: 0 0 10px;
  letter-spacing: 0;
}

.chat-shell,
.request-page,
.mechanism-page,
.policy-page,
.operator-compose,
.queue-card,
.log-card {
  background: var(--panel);
  border: 2px solid var(--line);
  padding: 16px;
}

.request-page {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 14px;
}

.chat-window {
  display: grid;
  gap: 12px;
}

.message {
  border: 1px solid var(--line);
  padding: 12px;
  background: #fff;
}

.message-left { margin-right: clamp(0px, 12vw, 120px); }

.message-right { margin-left: clamp(0px, 12vw, 120px); }

.ai-message {
  background: #f8f8f2;
}

.mechanism-lead {
  font-size: 1.18rem;
  font-weight: 800;
}

.mechanism-punchline {
  margin: 18px 0 8px;
  font-size: 1.08rem;
  font-weight: 800;
}

.mechanism-cta {
  margin: 0;
}

.process-list {
  margin: 16px 0 0;
  padding-left: 24px;
}

.process-list li + li { margin-top: 8px; }

.policy-section {
  border-top: 1px solid var(--line);
  padding-top: 12px;
  margin-top: 14px;
}

.policy-section h2 {
  font-size: 1.05rem;
}

.policy-link-row {
  margin: 18px 0 0;
  font-weight: 800;
}

.service-window-notice {
  border: 1px dashed var(--line);
  background: #f8f8f2;
  color: var(--ink);
  margin: 0 0 12px;
  padding: 10px 12px;
  font-weight: 800;
}

.sleeping-ai-note {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 8px 2px 0;
}

.public-warning-dialog {
  width: min(560px, calc(100vw - 32px));
  border: 2px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  padding: 0;
}

.public-warning-dialog::backdrop {
  background: rgba(31, 36, 33, 0.5);
}

.public-warning-body {
  padding: 18px;
}

.public-warning-body p {
  margin: 0 0 10px;
}

.public-warning-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 14px;
}

.secondary-button {
  background: var(--panel);
  color: var(--line);
}

.status-panel {
  border-left: 4px solid var(--line);
  padding-left: 12px;
}

.status-badge,
.notice-ok,
.thread-badge {
  display: inline-block;
  border: 2px solid var(--stamp);
  color: var(--stamp);
  padding: 4px 9px;
  font-weight: 800;
  background: var(--wash);
}

.thread-badge {
  margin-left: 8px;
  padding: 2px 7px;
  font-size: 0.75rem;
}

.status-answered {
  border-color: var(--line);
  color: var(--line);
}

label {
  display: block;
  font-weight: 800;
  margin-bottom: 6px;
}

textarea,
input[type="text"] {
  width: 100%;
  border: 2px solid var(--line);
  background: #fff;
  color: var(--ink);
  padding: 12px;
  font: inherit;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

button {
  border: 2px solid var(--line);
  background: var(--line);
  color: #fff;
  padding: 10px 14px;
  font-weight: 800;
  cursor: pointer;
}

.button-link {
  display: inline-block;
  border: 2px solid var(--line);
  background: var(--line);
  color: #fff;
  padding: 10px 14px;
  font-weight: 800;
  text-decoration: none;
}

.prompt-form,
.operator-compose form,
.deletion-form,
.followup-form {
  display: grid;
  gap: 10px;
}

.followup-form {
  border: 2px solid var(--line);
  background: #f8f8f2;
  padding: 12px;
}

.is-hidden { display: none; }

.queue-list,
.log-list {
  display: grid;
  gap: 12px;
}

blockquote {
  margin: 0 0 10px;
  padding-left: 12px;
  border-left: 4px solid var(--line);
}

.conversation-context {
  display: grid;
  gap: 12px;
  margin: 12px 0 16px;
}

.conversation-context h2 {
  font-size: 1rem;
  margin-bottom: 0;
}

.context-turn {
  display: grid;
  gap: 8px;
}

.context-message {
  border: 1px solid var(--line);
  padding: 10px 12px;
  background: #fff;
}

.context-message p:last-child { margin-bottom: 0; }

.context-ai {
  background: #f8f8f2;
}

.report-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  margin-top: 12px;
}

.empty {
  color: var(--muted);
  background: var(--panel);
  border: 1px dashed var(--line);
  padding: 14px;
}

@media (max-width: 760px) {
  .header-bar,
  .request-page {
    display: block;
  }

  .site-header nav { margin-top: 8px; }

  .header-bar-nav-only nav {
    justify-content: flex-end;
    margin-top: 0;
  }

  .hero {
    min-height: 0;
    padding-right: 18px;
  }

  .hero-stamp {
    position: static;
    display: block;
    width: 132px;
    margin-top: 8px;
  }

  .status-panel {
    border-left: 0;
    border-top: 2px solid var(--line);
    padding-left: 0;
    padding-top: 12px;
    margin-top: 12px;
  }

  .message-left,
  .message-right {
    margin-left: 0;
    margin-right: 0;
  }

  .report-form { grid-template-columns: 1fr; }
}