/* =============================================================
   nagabot日記集 — monochrome editorial
   ============================================================= */

:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --text-2: #555555;
  --text-3: #aaaaaa;
  --border: #ebebeb;
  --border-2: #d0d0d0;
  --surface: #f8f8f8;
  --highlight: #fff3b0;
  --font: '游ゴシック体', 'Yu Gothic', YuGothic, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

/* --- Layout --- */
.main {
  max-width: 680px;
  margin: 0 auto;
  padding: 3rem 1.5rem 6rem;
}

/* --- Nav --- */
.nav {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
}

.nav-inner {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 48px;
}

.nav-title {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--text);
  text-decoration: none;
}

.nav-links { display: flex; gap: 0; }

.nav-link {
  font-size: 0.75rem;
  color: var(--text-3);
  text-decoration: none;
  padding: 0.8rem 1rem;
  letter-spacing: 0.06em;
  border-bottom: 1.5px solid transparent;
  transition: color 0.15s;
}

.nav-link:hover { color: var(--text-2); }
.nav-link.active { color: var(--text); border-bottom-color: var(--text); }
.nav-logout { margin-left: 1rem; }

/* --- Footer --- */
.footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 0.5rem;
  font-size: 0.7rem;
  color: var(--text-3);
  letter-spacing: 0.03em;
}

/* --- Login --- */
.login-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
}

.login-title {
  font-size: 1.1rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  margin-bottom: 2rem;
}

.login-form {
  width: 280px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.error {
  color: #888;
  font-size: 0.8rem;
  text-align: center;
}

/* --- Inputs --- */
.input {
  font-family: var(--font);
  font-size: 0.9rem;
  color: var(--text);
  background: none;
  border: none;
  border-bottom: 1px solid var(--border-2);
  padding: 0.5rem 0;
  outline: none;
  width: 100%;
  transition: border-color 0.15s;
}

.input:focus { border-bottom-color: var(--text); }

.input::placeholder { color: var(--text-3); }

textarea.input {
  resize: vertical;
  line-height: 1.7;
}

/* --- Buttons --- */
.btn-primary {
  font-family: var(--font);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  background: var(--text);
  color: var(--bg);
  border: 1px solid var(--text);
  padding: 0.5rem 1.5rem;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-primary:hover { background: #333; }

.btn-toggle {
  font-family: var(--font);
  font-size: 0.8rem;
  color: var(--text-2);
  background: none;
  border: none;
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 0;
  cursor: pointer;
  width: 100%;
  text-align: left;
}

.btn-toggle:hover { color: var(--text); }

/* --- Radio --- */
.radio-label {
  font-size: 0.8rem;
  color: var(--text-2);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-right: 0.8rem;
}

.radio-label input[type="radio"] {
  accent-color: var(--text);
}

/* --- Search --- */
.search-form { margin-bottom: 2rem; }

.search-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 1rem;
}

.search-input { flex: 1; min-width: 200px; }

.search-targets { display: flex; gap: 0; }

/* --- Results --- */
.result-count {
  font-size: 0.78rem;
  color: var(--text-3);
  margin-bottom: 1.5rem;
  letter-spacing: 0.03em;
}

.results { display: flex; flex-direction: column; }

.result-card {
  display: block;
  text-decoration: none;
  color: var(--text);
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.1s;
}

.result-card:hover { background: var(--surface); margin: 0 -1rem; padding: 1rem; }

.result-title { font-size: 0.92rem; margin-bottom: 0.2rem; }

.result-meta {
  font-size: 0.72rem;
  color: var(--text-3);
  letter-spacing: 0.03em;
}

.result-snippet {
  font-size: 0.82rem;
  color: var(--text-2);
  margin-top: 0.4rem;
  line-height: 1.6;
}

.result-snippet mark {
  background: var(--highlight);
  color: var(--text);
  padding: 1px 2px;
}

.no-results {
  color: var(--text-3);
  font-size: 0.88rem;
  padding: 2rem 0;
}

.hint {
  color: var(--text-3);
  font-size: 0.85rem;
  padding: 3rem 0;
  text-align: center;
}

/* --- Pagination --- */
.pagination {
  display: flex;
  gap: 0;
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.page-link {
  font-size: 0.75rem;
  color: var(--text-3);
  text-decoration: none;
  padding: 0.4rem 0.8rem;
  border-bottom: 1.5px solid transparent;
  transition: color 0.15s;
}

.page-link:hover { color: var(--text-2); }
.page-link.active { color: var(--text); border-bottom-color: var(--text); }

/* --- Entry detail --- */
.back-link {
  font-size: 0.78rem;
  color: var(--text-3);
  text-decoration: none;
  display: inline-block;
  margin-bottom: 2rem;
}

.back-link:hover { color: var(--text-2); }

.entry-title {
  font-size: 1.15rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
}

.entry-meta {
  font-size: 0.72rem;
  color: var(--text-3);
  margin-bottom: 2rem;
  display: flex;
  gap: 1rem;
}

.entry-link { color: var(--text-3); text-decoration: none; }
.entry-link:hover { color: var(--text-2); }

.entry-body {
  white-space: pre-wrap;
  line-height: 2.1;
  font-size: 0.92rem;
  word-break: break-all;
  overflow-wrap: break-word;
}

.chunks-section { margin-top: 3rem; }

.chunk-block {
  padding: 0.8rem 0 0.8rem 1rem;
  border-left: 1px solid var(--border-2);
  margin-bottom: 1rem;
}

.chunk-meta {
  font-size: 0.7rem;
  color: var(--text-3);
  display: block;
  margin-bottom: 0.3rem;
}

.chunk-text {
  font-size: 0.85rem;
  line-height: 1.8;
  white-space: pre-wrap;
  word-break: break-all;
}

.hidden { display: none; }

/* --- Question --- */
.question-form { margin-bottom: 2rem; }

.question-input { margin-bottom: 1rem; }

.question-options {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
}

.option-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.option-label {
  font-size: 0.72rem;
  color: var(--text-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-right: 0.3rem;
}

.section-label {
  font-size: 0.72rem;
  color: var(--text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}

.answer-section { margin-bottom: 3rem; }

.answer-box {
  line-height: 2.1;
  font-size: 0.92rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}

.evidence-section { margin-top: 1rem; }

.evidence-card {
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--border);
}

.evidence-title {
  font-size: 0.9rem;
  color: var(--text);
  text-decoration: none;
}

.evidence-title:hover { text-decoration: underline; }

.evidence-meta {
  font-size: 0.7rem;
  color: var(--text-3);
  display: block;
  margin: 0.3rem 0 0.6rem;
}

.context-chunk {
  font-size: 0.82rem;
  color: var(--text-3);
  padding: 0.4rem 0 0.4rem 1rem;
  border-left: 1px solid var(--border);
  line-height: 1.7;
  white-space: pre-wrap;
}

.main-chunk {
  font-size: 0.88rem;
  color: var(--text);
  padding: 0.5rem 0 0.5rem 1rem;
  border-left: 2px solid var(--text);
  line-height: 1.9;
  white-space: pre-wrap;
}

/* --- Admin --- */
.upload-form {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1rem 0 2rem;
}

.file-input {
  font-family: var(--font);
  font-size: 0.82rem;
  color: var(--text-2);
}

.message {
  font-size: 0.85rem;
  color: var(--text-2);
  padding: 1rem;
  background: var(--surface);
  margin-bottom: 2rem;
}

.stats-section { margin-top: 1rem; }

.stats-list {
  list-style: none;
  font-size: 0.85rem;
  color: var(--text-2);
}

.stats-list li { padding: 0.3rem 0; border-bottom: 1px solid var(--border); }

/* --- Log table --- */
.log-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  color: var(--text-2);
}

.log-table th {
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--text-3);
  letter-spacing: 0.06em;
  text-align: left;
  padding: 0.4rem 0.5rem;
  border-bottom: 1px solid var(--border-2);
}

.log-table td {
  padding: 0.35rem 0.5rem;
  border-bottom: 1px solid var(--border);
}

.log-ts {
  white-space: nowrap;
  font-size: 0.75rem;
  color: var(--text-3);
}

.log-count {
  text-align: right;
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); }

/* --- Responsive --- */
@media (max-width: 600px) {
  html { font-size: 14px; }

  .main { padding: 1.5rem 1rem 5rem; }

  /* Nav */
  .nav-inner {
    padding: 0 0.8rem;
    height: 44px;
  }
  .nav-title { font-size: 0.8rem; }
  .nav-link {
    font-size: 0.7rem;
    padding: 0.7rem 0.6rem;
  }
  .nav-logout { margin-left: 0.5rem; }

  /* Search */
  .search-row { flex-direction: column; gap: 0.8rem; }
  .search-input { min-width: 100%; }
  .search-targets { flex-wrap: wrap; }

  /* Results */
  .result-card:hover { margin: 0; padding: 1rem 0; }
  .result-title { font-size: 0.88rem; }

  /* Pagination */
  .pagination { flex-wrap: wrap; gap: 0.2rem; }
  .page-link { padding: 0.4rem 0.5rem; font-size: 0.7rem; }

  /* Entry */
  .entry-title { font-size: 1rem; }
  .entry-body { font-size: 0.88rem; line-height: 2; }

  /* Question */
  .question-options { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .answer-box { font-size: 0.88rem; }
  .main-chunk { font-size: 0.84rem; }
  .context-chunk { font-size: 0.78rem; }

  /* Login */
  .login-form { width: 85%; }

  /* Admin */
  .upload-form { flex-direction: column; align-items: flex-start; }

  /* Footer */
  .footer { font-size: 0.65rem; }
}