/* ============ base ============ */
:root {
  --paper: #faf8f5;
  --ink: #2b2a28;
  --ink-soft: #6f6a62;
  --line: #e6e2db;
  --accent: #2e6e65;
  --accent-dark: #235650;
  --accent-soft: #e8f1ef;
  --white: #ffffff;
  --serif: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", serif;
  --sans: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.7;
}
button { font-family: inherit; cursor: pointer; }
textarea, input[type="text"] {
  font-family: inherit;
  font-size: 14px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--white);
  color: var(--ink);
  resize: vertical;
}
textarea:focus, input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ============ topbar ============ */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
  background: rgba(250, 248, 245, 0.95);
  border-bottom: 1px solid var(--line);
}
.brand {
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: 0.12em;
  font-weight: 600;
}
.brand-accent { color: var(--accent); }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.saved-status { font-size: 12px; color: var(--ink-soft); }

/* ============ layout ============ */
.layout { display: flex; min-height: calc(100vh - 61px); }
.sidebar {
  width: 200px; flex-shrink: 0;
  border-right: 1px solid var(--line);
  padding: 24px 12px;
  background: var(--white);
}
.nav-label {
  font-size: 11px; letter-spacing: 0.25em; color: var(--ink-soft);
  padding: 0 12px 10px;
}
.nav-item {
  display: block; width: 100%;
  text-align: left;
  padding: 10px 12px;
  margin-bottom: 2px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: none;
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--ink);
}
.nav-item:hover { background: var(--paper); }
.nav-item.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-dark);
}
.backup-note {
  margin-top: 24px; padding: 0 12px;
  font-size: 11px; color: var(--ink-soft);
}

.main {
  flex: 1;
  max-width: 900px;
  padding: 32px 40px 80px;
}

/* ============ tool ============ */
.tool-title {
  font-family: var(--serif);
  font-size: 26px;
  letter-spacing: 0.15em;
  font-weight: 600;
  margin-bottom: 6px;
}
.tool-desc { color: var(--ink-soft); margin-bottom: 24px; max-width: 640px; }

.panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px 28px;
  margin-bottom: 20px;
}
.panel-head {
  display: flex; align-items: baseline; gap: 12px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
  margin-bottom: 18px;
}
.step-no {
  font-family: var(--serif);
  font-style: italic;
  font-size: 20px;
  color: var(--accent);
}
.panel-head h2 {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: 0.1em;
  font-weight: 600;
}
.hint { font-size: 12.5px; color: var(--ink-soft); margin-bottom: 12px; }

.field { display: block; margin-bottom: 14px; font-size: 13px; color: var(--ink-soft); }
.field textarea, .field input { margin-top: 6px; color: var(--ink); }
.field-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }

/* ============ preset ============ */
.preset-box {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 18px;
}
.preset-title { font-size: 12px; color: var(--ink-soft); margin-bottom: 8px; }
.preset-row { display: flex; flex-wrap: wrap; gap: 8px; }
.preset-row button {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
}
.preset-row button:hover { border-color: var(--accent); color: var(--accent-dark); }

/* ============ buttons ============ */
.btn-row { display: flex; gap: 10px; margin-bottom: 12px; }
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 22px;
  font-size: 14px;
  letter-spacing: 0.05em;
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-copy, .btn-ghost {
  background: var(--white);
  color: var(--accent-dark);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 13px;
}
.btn-copy:hover, .btn-ghost:hover { background: var(--accent-soft); }
.btn-ghost { border-color: var(--line); color: var(--ink-soft); padding: 7px 14px; font-size: 12px; }

.prompt-out {
  background: var(--paper);
  font-size: 13px;
  line-height: 1.6;
}

/* ============ taste grid ============ */
.taste-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.taste-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  padding: 0 0 10px;
  overflow: hidden;
  text-align: left;
}
.taste-card:hover { border-color: var(--accent); }
.taste-card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.taste-swatch { display: flex; height: 52px; }
.taste-swatch span { flex: 1; }
.taste-name {
  font-family: var(--serif);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 10px 0;
}
.taste-mood { font-size: 11px; color: var(--ink-soft); padding: 0 10px; }

/* ============ segmented ============ */
.seg-field { margin-bottom: 14px; }
.seg { display: flex; gap: 8px; margin-top: 6px; }
.seg-wrap { flex-wrap: wrap; }
.seg button {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  color: var(--ink);
  display: flex; flex-direction: column; align-items: center; gap: 2px;
}
.seg button small { font-size: 10px; color: var(--ink-soft); }
.seg button.selected {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

/* ============ seminar ref / line messages ============ */
.seminar-ref {
  margin-bottom: 20px;
  border: 1px dashed var(--line);
  border-radius: 10px;
  padding: 10px 16px;
  background: var(--white);
}
.seminar-ref summary { cursor: pointer; font-size: 13px; color: var(--ink-soft); }
.seminar-ref-body {
  white-space: pre-wrap;
  font-family: inherit;
  font-size: 13px;
  margin-top: 10px;
  color: var(--ink);
}
.line-messages { margin-top: 16px; display: grid; gap: 12px; }
.line-msg {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  background: var(--paper);
}
.line-msg-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 8px;
}
.line-msg-head .step-no { font-size: 15px; }
.line-msg-body { white-space: pre-wrap; font-size: 13px; }

@media (max-width: 900px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; display: flex; flex-wrap: wrap; gap: 4px; padding: 12px; }
  .nav-label, .backup-note { display: none; }
  .nav-item { width: auto; }
  .main { padding: 24px 16px 60px; }
  .taste-grid { grid-template-columns: repeat(2, 1fr); }
  .field-2col { grid-template-columns: 1fr; }
}