/* File: assets/style.css */
:root {
  --ink: #1c2b24;
  --paper: #f7f5ef;
  --line: #d9d3c3;
  --accent: #1f5c4a;
  --accent-dark: #163e33;
  --muted: #6b6455;
  --danger: #a4302a;
  --success: #2f6b3f;
  --serif: "Iowan Old Style", "Palatino Linotype", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.55;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}
.wrap-narrow { max-width: 720px; }

/* Header */
.site-header {
  border-bottom: 3px solid var(--ink);
  padding: 18px 0;
  background: var(--paper);
}
.site-header .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.site-header nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 3px;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-secondary {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-large { padding: 13px 26px; font-size: 1rem; margin: 18px 0; }

/* Page title */
.page-title {
  font-family: var(--serif);
  font-size: 1.8rem;
  margin: 28px 0 18px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
}

/* Search */
.search-bar { margin-top: 24px; }
.search-bar form { display: flex; gap: 8px; }
.search-bar input[type=search] {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 1rem;
  background: #fff;
}
.search-bar button {
  padding: 10px 20px;
  background: var(--ink);
  color: #fff;
  border: none;
  border-radius: 3px;
  cursor: pointer;
}

/* Paper list */
.paper-list { list-style: none; padding: 0; margin: 0; }
.paper-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.paper-item h2 { margin: 6px 0 4px; font-family: var(--serif); font-size: 1.25rem; }
.paper-item h2 a { color: var(--ink); text-decoration: none; }
.paper-item h2 a:hover { color: var(--accent); }
.paper-item .meta { color: var(--muted); font-size: 0.92rem; margin: 0; }

.tag {
  display: inline-block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border-radius: 3px;
  font-weight: 700;
}
.tag-journal { background: #e3ede7; color: var(--accent-dark); }
.tag-conference { background: #efe6da; color: #7a4a1f; }

.pagination { margin: 24px 0; display: flex; justify-content: space-between; }
.pagination a { color: var(--accent); text-decoration: none; }

.empty { color: var(--muted); padding: 40px 0; text-align: center; }

/* Forms */
.hint { color: var(--muted); font-size: 0.95rem; }
.hint-small { color: var(--muted); font-size: 0.85rem; margin-top: -4px; }

fieldset {
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 18px 20px 20px;
  margin: 0 0 20px;
}
legend {
  font-family: var(--serif);
  font-weight: 700;
  padding: 0 8px;
  color: var(--accent-dark);
}

.paper-form label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
  margin: 12px 0 5px;
}
.paper-form input[type=text],
.paper-form input[type=number],
.paper-form input[type=file],
.paper-form select,
.paper-form textarea {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 0.95rem;
  font-family: var(--sans);
  background: #fff;
}
.paper-form textarea { resize: vertical; }
.paper-form textarea.mono {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.85rem;
  background: #fbfaf6;
}

.btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-danger {
  background: transparent;
  color: var(--danger);
  border-color: var(--danger);
}
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-small { padding: 6px 12px; font-size: 0.85rem; }

.item-actions { margin-top: 6px; display: flex; gap: 10px; }
.item-actions a { font-size: 0.85rem; text-decoration: none; }
.item-actions .link-edit { color: var(--accent); }
.item-actions .link-delete { color: var(--danger); }

.bibtex-box {
  margin-top: 26px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}
.bibtex-box h2 { font-family: var(--serif); font-size: 1.2rem; margin-bottom: 10px; }
.bibtex-box pre {
  background: #fbfaf6;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 14px 16px;
  font-size: 0.85rem;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
.bibtex-box .btn { margin-top: 4px; }
.copy-feedback {
  font-size: 0.85rem;
  color: var(--success);
  margin-left: 10px;
  display: none;
}

.grid-2 { display: grid; grid-template-columns: 1fr 2fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
@media (max-width: 640px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

.author-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}
.btn-remove {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--danger);
  border-radius: 3px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 1.1rem;
}

.alert {
  padding: 12px 16px;
  border-radius: 4px;
  margin: 16px 0;
  font-size: 0.92rem;
}
.alert-error { background: #f8e3e1; color: var(--danger); border: 1px solid #e3aca7; }
.alert-success { background: #e2efe3; color: var(--success); border: 1px solid #a9d1ae; }

/* Detail page */
.paper-title { font-family: var(--serif); font-size: 2rem; margin: 14px 0 10px; }
.authors { font-size: 1.05rem; color: var(--ink); margin: 0 0 4px; }
.source-line { color: var(--muted); margin: 0 0 8px; }
.doi { font-size: 0.92rem; color: var(--muted); }
.doi a { color: var(--accent); }
.abstract { margin-top: 26px; border-top: 1px solid var(--line); padding-top: 18px; }
.abstract h2 { font-family: var(--serif); font-size: 1.2rem; }
.keywords { font-size: 0.92rem; color: var(--muted); }

.site-footer {
  margin-top: 60px;
  border-top: 1px solid var(--line);
  padding: 20px 0 40px;
  color: var(--muted);
  font-size: 0.85rem;
}
.site-footer code {
  background: #ece7da;
  padding: 1px 5px;
  border-radius: 3px;
}
/* Impor BibTeX (upload.php) */
.bibtex-import { background: #f6f8f6; }
.bibtex-import-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.bibtex-import-actions .btn { margin: 0; }
.paper-form label.file-inline { margin: 0; font-size: 0.85rem; color: var(--muted); }
.paper-form label.file-inline input[type=file] { margin-top: 4px; }

/* Kutip naskah (paper.php) */
.cite-box { margin-top: 26px; border-top: 1px solid var(--line); padding-top: 18px; }
.cite-box h2 { font-family: var(--serif); font-size: 1.2rem; margin-bottom: 10px; }
.cite-tabs { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 10px; }
.cite-tab {
  background: transparent; border: 1px solid var(--line); border-radius: 3px;
  padding: 5px 11px; font: inherit; font-size: 0.85rem; color: var(--muted); cursor: pointer;
}
.cite-tab:hover { color: var(--ink); }
.cite-tab[aria-selected="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.cite-text {
  background: #fbfaf6; border: 1px solid var(--line); border-radius: 4px;
  padding: 14px 16px; font-size: 0.95rem; line-height: 1.6;
  overflow-wrap: anywhere;
}
.cite-text a { color: var(--accent); }
pre.cite-code { font-size: 0.85rem; white-space: pre-wrap; word-break: break-word; margin: 0; line-height: 1.5; }
.cite-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 8px; }
.cite-actions .copy-feedback { margin-left: 2px; }
.cite-note { margin-top: 10px; }