@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=Syne:wght@400;600;700;800&family=DM+Sans:wght@300;400;500;600&display=swap');

:root {
  --bg:          #f8fafc;
  --bg2:         #ffffff;
  --bg3:         #f1f5f9;
  --bg4:         #e2e8f0;
  --border:      #e2e8f0;
  --border2:     #cbd5e1;
  --text:        #0f172a;
  --text2:       #475569;
  --text3:       #94a3b8;
  --accent:      #2563eb;
  --accent2:     #1d4ed8;
  --green:       #10b981;
  --green-dim:   #ecfdf5;
  --green-bdr:   #d1fae5;
  --amber:       #f59e0b;
  --amber-dim:   #fffbeb;
  --amber-bdr:   #fef3c7;
  --red:         #ef4444;
  --red-dim:     #fef2f2;
  --red-bdr:     #fee2e2;
  --blue-dim:    #eff6ff;
  --blue-bdr:    #dbeafe;
  --mono:        'Space Mono', monospace;
  --body:        'DM Sans', sans-serif;
  --display:     'Syne', sans-serif;
  --radius:      12px;
  --radius-sm:   8px;
  --shadow:      0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.05);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

/* ── HEADER ──────────────────────────────────────────────────────────────── */
.header {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 200;
  backdrop-filter: blur(12px);
}
.header-inner {
  max-width: 1160px; margin: 0 auto;
  padding: 0 28px;
  height: 58px;
  display: flex; align-items: center; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #7b6cf8);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  color: #fff; letter-spacing: -0.5px; flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}
.brand-name { font-family: var(--display); font-size: 16px; font-weight: 800; letter-spacing: -0.5px; color: var(--text); }
.brand-ver  { font-family: var(--mono); font-size: 9px; color: var(--accent); letter-spacing: 1.5px; margin-left: 2px; vertical-align: super; }

.header-dbs { display: flex; gap: 6px; margin-left: auto; flex-wrap: wrap; align-items: center; }
.db-tag {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.5px;
  padding: 3px 9px; border-radius: 4px;
  border: 1px solid var(--border2); color: var(--text2);
  background: var(--bg3);
}
.db-tag--new { color: var(--green); border-color: var(--green-bdr); background: var(--green-dim); }

/* ── LAYOUT ──────────────────────────────────────────────────────────────── */
.page { max-width: 1160px; margin: 0 auto; padding: 36px 28px 100px; }

/* ── HERO ────────────────────────────────────────────────────────────────── */
.hero { margin-bottom: 32px; }
.hero-title {
  font-family: var(--display);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 800; letter-spacing: -1.5px;
  line-height: 1.1; margin-bottom: 8px;
  background: linear-gradient(135deg, #0f172a 30%, #2563eb);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub { color: var(--text2); font-size: 14px; max-width: 560px; line-height: 1.6; }

/* ── INPUT CARD ──────────────────────────────────────────────────────────── */
.input-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 14px; overflow: hidden; margin-bottom: 28px;
  box-shadow: var(--shadow);
}
.input-label {
  padding: 14px 20px 0;
  font-family: var(--mono); font-size: 10px; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--text3);
}
.ref-textarea {
  width: 100%; padding: 14px 20px;
  background: transparent; border: none; outline: none;
  color: var(--text); font-family: var(--mono);
  font-size: 12.5px; line-height: 1.75;
  resize: vertical; min-height: 190px;
}
.ref-textarea::placeholder { color: var(--text3); }
.input-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; background: var(--bg3);
  border-top: 1px solid var(--border);
}
.ref-counter { font-family: var(--mono); font-size: 11px; color: var(--text3); }
.input-actions { display: flex; gap: 10px; }

/* ── BUTTONS ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 18px; border-radius: var(--radius-sm);
  font-family: var(--body); font-size: 13.5px; font-weight: 600;
  cursor: pointer; transition: all .15s ease;
  border: 1px solid; line-height: 1;
}
.btn--ghost { background: transparent; border-color: var(--border2); color: var(--text2); }
.btn--ghost:hover { background: var(--bg4); color: var(--text); border-color: var(--border2); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 700; letter-spacing: 0.2px; }
.btn--primary:hover { background: var(--accent2); border-color: var(--accent2); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(77,156,248,.35); }
.btn--primary:disabled { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }
.btn--sm { padding: 6px 13px; font-size: 12px; }
.btn-arrow { font-size: 15px; }

/* ── STATUS ──────────────────────────────────────────────────────────────── */
.status-bar {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 13px 18px; margin-bottom: 24px;
  font-size: 13px; color: var(--text2);
}
.spinner {
  width: 15px; height: 15px; border-radius: 50%;
  border: 2px solid var(--border2); border-top-color: var(--accent);
  animation: spin .65s linear infinite; flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── RESULTS HEADER ──────────────────────────────────────────────────────── */
.results-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 18px; flex-wrap: wrap;
}
.results-title { font-family: var(--display); font-size: 18px; font-weight: 800; letter-spacing: -0.5px; margin-right: auto; }
.summary-strip { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.sum-badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: var(--mono); font-size: 11px; font-weight: 700;
  padding: 5px 12px; border-radius: 20px; border: 1px solid;
  letter-spacing: 0.3px;
}
.sum-badge--verified   { color: var(--green); border-color: var(--green-bdr);  background: var(--green-dim); }
.sum-badge--review     { color: var(--amber); border-color: var(--amber-bdr);  background: var(--amber-dim); }
.sum-badge--suspicious { color: var(--red);   border-color: var(--red-bdr);    background: var(--red-dim); }
.sum-badge--web        { color: var(--accent);border-color: var(--blue-bdr);   background: var(--blue-dim); }
.total-count { font-size: 13px; color: var(--text2); font-family: var(--mono); }

/* ── RESULT LIST ─────────────────────────────────────────────────────────── */
.results-list { display: flex; flex-direction: column; gap: 10px; }

/* ── RESULT CARD ─────────────────────────────────────────────────────────── */
.rcard {
  border-radius: 12px; border: 1px solid var(--border);
  overflow: hidden; transition: all .2s ease;
  background: var(--bg2);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.rcard:hover { box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05); border-color: var(--border2); }

.rcard--verified   { border-color: rgba(16, 185, 129, 0.3); }
.rcard--review     { border-color: rgba(245, 158, 11, 0.3); }
.rcard--suspicious { border-color: rgba(239, 68, 68, 0.3); }
.rcard--web        { border-color: rgba(37, 99, 235, 0.25); }

/* Card header strip */
.rcard-strip {
  height: 3px; width: 100%;
  background: var(--border);
}
.rcard--verified   .rcard-strip { background: var(--green); }
.rcard--review     .rcard-strip { background: var(--amber); }
.rcard--suspicious .rcard-strip { background: var(--red); }
.rcard--web        .rcard-strip { background: var(--accent); }

.rcard-top {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 14px 18px;
}
.rcard-num {
  font-family: var(--mono); font-size: 10px; color: var(--text3);
  padding-top: 3px; flex-shrink: 0; width: 22px;
}
.rcard-main { flex: 1; min-width: 0; }
.rcard-ref {
  font-family: var(--mono); font-size: 12px; line-height: 1.65;
  color: var(--text2); margin-bottom: 10px; word-break: break-word;
}
.rcard-badges { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.verdict-badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11.5px; font-weight: 700; padding: 3px 10px;
  border-radius: 5px; letter-spacing: 0.2px;
}
.verdict-badge--verified   { color: var(--green); background: var(--green-dim); }
.verdict-badge--review     { color: var(--amber); background: var(--amber-dim); }
.verdict-badge--suspicious { color: var(--red);   background: var(--red-dim); }
.verdict-badge--web        { color: var(--accent); background: var(--blue-dim); }

.format-tag {
  font-family: var(--mono); font-size: 10px;
  color: var(--text3); padding: 2px 7px;
  border: 1px solid var(--border); border-radius: 4px;
}
.conf-badge {
  font-family: var(--mono); font-size: 10px;
  padding: 2px 8px; border-radius: 4px;
}
.conf-badge--high { color: var(--green); background: var(--green-dim); }
.conf-badge--mid  { color: var(--amber); background: var(--amber-dim); }
.conf-badge--low  { color: var(--red);   background: var(--red-dim); }

.rcard-chevron {
  flex-shrink: 0; background: transparent; border: none;
  cursor: pointer; color: var(--text3); padding: 6px; line-height: 1;
  font-size: 16px; transition: color .15s, transform .2s;
  border-radius: 4px;
}
.rcard-chevron:hover { color: var(--text); background: var(--bg4); }
.rcard-chevron.open { transform: rotate(180deg); }

/* ── CARD BODY ───────────────────────────────────────────────────────────── */
.rcard-body {
  border-top: 1px solid var(--border);
  background: var(--bg3);
  display: none; padding: 22px;
}
.rcard-body.open { display: block; }

.body-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 720px) { .body-cols { grid-template-columns: 1fr; } }

.section-label {
  font-family: var(--mono); font-size: 9.5px; font-weight: 700;
  letter-spacing: 1.8px; text-transform: uppercase;
  color: var(--text3); margin-bottom: 12px;
}

/* Parsed table */
.ptable { width: 100%; border-collapse: collapse; }
.ptable tr:not(:last-child) td { border-bottom: 1px solid var(--border); }
.ptable td { padding: 7px 0; font-size: 12.5px; vertical-align: top; }
.ptable td:first-child {
  font-family: var(--mono); font-size: 10px;
  color: var(--text3); width: 70px; padding-right: 14px; padding-top: 9px;
}
.ptable td:last-child { color: var(--text); word-break: break-word; }
.doi-link { color: var(--accent); font-family: var(--mono); font-size: 11.5px; word-break: break-all; }
.doi-link:hover { text-decoration: underline; }

/* Source chips */
.sources-row { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 16px; }
.src-chip {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: var(--mono); font-size: 10px; font-weight: 700;
  padding: 4px 10px; border-radius: 5px; border: 1px solid;
  letter-spacing: 0.3px;
}
.src-chip--found    { color: var(--green); border-color: var(--green-bdr); background: var(--green-dim); }
.src-chip--notfound { color: var(--text3); border-color: var(--border);   background: transparent; }
.src-chip--pending  { color: var(--text3); border-color: var(--border);   background: transparent; }

/* Match box */
.match-box {
  background: var(--bg4); border: 1px solid var(--border2);
  border-radius: 10px; padding: 16px; height: 100%;
}
.match-paper-title  { font-size: 14px; font-weight: 600; line-height: 1.4; margin-bottom: 6px; color: var(--text); }
.match-paper-authors{ font-size: 11.5px; color: var(--text2); line-height: 1.55; margin-bottom: 12px; }
.match-chips { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.match-chip {
  font-family: var(--mono); font-size: 10px;
  padding: 2px 8px; border-radius: 4px;
  background: var(--bg3); border: 1px solid var(--border);
  color: var(--text2);
}
.no-match-msg { color: var(--text3); font-size: 13px; font-style: italic; padding: 12px 0; }

/* Score bars */
.score-rows { display: flex; flex-direction: column; gap: 7px; margin-top: 14px; border-top: 1px solid var(--border); padding-top: 14px; }
.score-row  { display: flex; align-items: center; gap: 10px; }
.score-label{ font-family: var(--mono); font-size: 10px; color: var(--text3); width: 52px; flex-shrink: 0; }
.score-track{ flex: 1; height: 5px; background: var(--border); border-radius: 3px; overflow: hidden; }
.score-fill { height: 100%; border-radius: 3px; transition: width .4s ease; }
.score-fill--hi { background: var(--green); }
.score-fill--md { background: var(--amber); }
.score-fill--lo { background: var(--red); }
.score-pct  { font-family: var(--mono); font-size: 10px; color: var(--text2); width: 30px; text-align: right; flex-shrink: 0; }

/* Flags */
.flags-stack { display: flex; flex-direction: column; gap: 8px; }
.flag-card {
  border-radius: var(--radius-sm);
  padding: 10px 13px;
  font-size: 12.5px; line-height: 1.55;
  border-left: 3px solid;
}
.flag-code { font-family: var(--mono); font-size: 10px; font-weight: 700; display: block; margin-bottom: 3px; }
.flag-card--HIGH   { background: rgba(240,64,64,.08);  border-left-color: var(--red);   }
.flag-card--HIGH   .flag-code { color: var(--red); }
.flag-card--MEDIUM { background: rgba(245,166,35,.08); border-left-color: var(--amber); }
.flag-card--MEDIUM .flag-code { color: var(--amber); }
.flag-card--LOW    { background: rgba(255,255,255,.03); border-left-color: var(--border2); }
.flag-card--LOW    .flag-code { color: var(--text2); }
.flag-card--INFO   { background: rgba(77,156,248,.07); border-left-color: var(--accent); }
.flag-card--INFO   .flag-code { color: var(--accent); }

.ok-msg { color: var(--green); font-size: 12.5px; margin-top: 10px; display: flex; align-items: center; gap: 6px; }

/* ── MISC ────────────────────────────────────────────────────────────────── */
.hidden { display: none !important; }

@media (max-width: 600px) {
  .header-dbs { display: none; }
  .page { padding: 20px 16px 60px; }
  .hero-title { font-size: 24px; }
  .body-cols { gap: 18px; }
}

/* Animate cards in */
.rcard { animation: slideIn .25s ease both; }
@keyframes slideIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

/* ── PREVIEW PANEL ───────────────────────────────────────────────────────── */
.preview-panel {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 12px; padding: 18px 20px; margin-bottom: 20px;
}
.preview-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px;
}
.preview-list { display: flex; flex-direction: column; gap: 6px; }
.preview-item {
  display: flex; gap: 12px; padding: 8px 12px;
  background: var(--bg4); border-radius: 6px; border: 1px solid var(--border);
}
.preview-num {
  font-family: var(--mono); font-size: 10px; color: var(--text3);
  width: 22px; flex-shrink: 0; padding-top: 2px;
}
.preview-ref {
  font-family: var(--mono); font-size: 11.5px; color: var(--text2);
  line-height: 1.6; word-break: break-word;
}