/* LitReview v3 — contemporary editorial style, no external CDN */
:root {
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-serif: ui-serif, Georgia, "Times New Roman", Times, serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  --accent-teal: #15803d;
  --accent-sky: #22c55e;
  --accent-lime: #84cc16;
  --accent-amber: #10b981;
  --accent-purple: #059669;

  --bg: #f6fbf4;
  --bg-hero: #eef7ec;
  --bg-card: #ffffff;
  --bg-nav: rgba(246, 251, 244, 0.82);
  --bg-code: #eefdf4;

  --text: #0f291e;
  --text-muted: #5d766b;
  --text-faint: #8aa89a;
  --border: #d2e7d8;

  --blob-1: rgba(34,197,94, 0.45);
  --blob-2: rgba(16,185,129, 0.45);
  --blob-3: rgba(132,204,22, 0.32);
}

html.dark {
  --bg: #0b1f17;
  --bg-hero: #102923;
  --bg-card: #102923;
  --bg-nav: rgba(11, 31, 23, 0.82);
  --bg-code: #0f291e;

  --text: #f6fbf4;
  --text-muted: #8aa89a;
  --text-faint: #5d766b;
  --border: #23523e;

  --blob-1: rgba(21,128,61, 0.35);
  --blob-2: rgba(16,185,129, 0.30);
  --blob-3: rgba(132,204,22, 0.20);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background .25s ease, color .25s ease;
  line-height: 1.6;
}

a { color: var(--accent-teal); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Navigation ---------- */
.nav {
  position: sticky;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: var(--bg-nav);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 50;
}
.nav-brand {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--text);
  letter-spacing: -0.02em;
}
.nav-brand span { color: var(--accent-teal); }
.nav-links {
  display: flex;
  gap: .5rem;
  align-items: center;
  font-size: .9rem;
  font-weight: 500;
}
.nav-links a {
  color: var(--text-muted);
  padding: .5rem .85rem;
  border-radius: 9999px;
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--text); background: rgba(0,0,0,.04); text-decoration: none; }
html.dark .nav-links a:hover { background: rgba(255,255,255,.06); }
.nav-links a.active { color: var(--text); background: rgba(0,0,0,.05); font-weight: 600; }
html.dark .nav-links a.active { background: rgba(255,255,255,.07); }

.theme-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 9999px;
  width: 2.1rem;
  height: 2.1rem;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform .15s, border-color .15s;
}
.theme-btn:hover { transform: scale(1.08); border-color: var(--accent-teal); }

@media (max-width: 600px) {
  .nav { padding: .85rem 1rem; }
  .nav-brand { font-size: 1.15rem; }
  .nav-links { gap: .15rem; }
  .nav-links a { padding: .45rem .55rem; font-size: .82rem; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 92vh;
  padding: 5rem 2rem 4rem;
  overflow: hidden;
  isolation: isolate;
  background: var(--bg-hero);
}
.hero-blobs {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}
.hero-blobs span {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .8;
  animation: blobFloat 20s ease-in-out infinite;
}
.hero-blobs span:nth-child(1) {
  width: min(55vw, 42rem);
  height: min(55vw, 42rem);
  background: var(--blob-1);
  top: -8%;
  left: -10%;
  animation-delay: 0s;
}
.hero-blobs span:nth-child(2) {
  width: min(48vw, 36rem);
  height: min(48vw, 36rem);
  background: var(--blob-2);
  bottom: -12%;
  right: -8%;
  animation-delay: -7s;
}
.hero-blobs span:nth-child(3) {
  width: min(42vw, 30rem);
  height: min(42vw, 30rem);
  background: var(--blob-3);
  top: 35%;
  left: 38%;
  animation-delay: -14s;
  opacity: .55;
}

@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(3%, 5%) scale(1.04); }
  66% { transform: translate(-2%, 3%) scale(0.97); }
}

.hero .domain {
  text-transform: uppercase;
  letter-spacing: .2em;
  font-size: .7rem;
  font-weight: 700;
  color: var(--accent-teal);
  margin: 0 0 .9rem;
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 5rem);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.025em;
  max-width: 54rem;
  margin: 0 auto 1.25rem;
}
.hero p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 38rem;
  margin: 0 auto;
}
.hero-actions {
  margin-top: 2.5rem;
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Layout ---------- */
.container {
  flex: 1;
  width: 100%;
  max-width: 70rem;
  margin: 0 auto;
  padding: 4rem 2rem 5rem;
}
.container.narrow { max-width: 50rem; }

.spaced { margin-top: 4rem; }
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 400;
  margin: 0 0 1.5rem;
  letter-spacing: -0.015em;
}
.page-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 400;
  margin: 0 0 .5rem;
  letter-spacing: -0.02em;
}
.subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin: 0 0 2rem;
  max-width: 46rem;
  line-height: 1.65;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .85rem 1.75rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: .95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s, background .15s, border-color .15s;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent-teal), var(--accent-sky));
  color: #fff;
  box-shadow: 0 6px 22px rgba(232,115,92, .28);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(232,115,92, .38);
}
.btn-outline {
  border-color: var(--border);
  color: var(--text);
  background: rgba(255,255,255,.45);
}
html.dark .btn-outline { background: rgba(255,255,255,.05); }
.btn-outline:hover { border-color: var(--accent-teal); color: var(--accent-teal); transform: translateY(-2px); }
.btn-danger { background: #dc2626; color: #fff; }
.btn-danger:hover { background: #b91c1c; transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-ghost:hover { color: var(--text); transform: translateY(-2px); }
.btn-sm { padding: .55rem 1rem; font-size: .82rem; }

/* ---------- Cards ---------- */
.card {
  display: block;
  padding: 1.35rem 1.5rem;
  border-radius: 1rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: border-color .2s, transform .2s, box-shadow .2s;
  color: var(--text);
}
a.card:hover {
  text-decoration: none;
  border-color: var(--accent-teal);
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgba(0,0,0,.07);
}
html.dark a.card:hover { box-shadow: 0 14px 32px rgba(0,0,0,.25); }
.card .id-line {
  font-size: .78rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
  margin-bottom: .35rem;
}
.card .title { font-weight: 600; font-size: 1.15rem; line-height: 1.35; margin-top: .15rem; }
.card .auth { font-size: .9rem; color: var(--text-muted); margin-top: .35rem; }
.card .abs { font-size: .9rem; color: var(--text-muted); margin-top: .65rem; line-height: 1.55; }
.stack { display: flex; flex-direction: column; gap: 1rem; }
.row-between { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; }
.row-between > * { min-width: 0; }
@media (max-width: 640px) {
  .card .row-between { flex-direction: column; }
  .card .row-between > :first-child { width: 100%; }
}

/* ---------- Badges, pills ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  padding: .35rem .9rem;
  border-radius: 9999px;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .01em;
  white-space: nowrap;
}
.pill-area { background: transparent; color: var(--text-muted); padding: 0; border-radius: 0; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; }
html.dark .pill-area { background: transparent; color: var(--text-faint); }
.pill-ai { background: rgba(194,89,123, .10); color: #9c2e4b; }
html.dark .pill-ai { background: rgba(194,89,123, .15); color: #f9a8d4; }
.pill-fmt { background: rgba(245,158,11, .10); color: #92400e; }
html.dark .pill-fmt { background: rgba(245,158,11, .15); color: #fbbf24; }
.pill-impact { background: rgba(249,115,22, .15); color: #9a3412; }
html.dark .pill-impact { background: rgba(249,115,22, .15); color: #f97316; }
.pill-pending { background: rgba(249,115,22, .15); color: #9a3412; }
.pill-rejected { background: rgba(220, 38, 38, .12); color: #991b1b; }
html.dark .pill-pending { background: rgba(249,115,22, .12); color: #f97316; }
html.dark .pill-rejected { background: rgba(220, 38, 38, .12); color: #fca5a5; }

.tag {
  display: inline-block;
  padding: .25rem .75rem;
  border-radius: 9999px;
  font-size: .75rem;
  background: var(--bg-code);
  color: var(--text-muted);
}
.tag-warn { background: #ffedd5; color: #9a3412; }
.tag-danger { background: #fee2e2; color: #991b1b; }
html.dark .tag-warn { background: rgba(249,115,22, .12); color: #f97316; }
html.dark .tag-danger { background: rgba(220, 38, 38, .12); color: #fca5a5; }

/* ---------- Feature / area cards ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1.5rem; }
.feature-card {
  position: relative;
  padding: 1.75rem;
  border-radius: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -30%;
  width: 10rem;
  height: 10rem;
  border-radius: 50%;
  filter: blur(50px);
  opacity: .35;
  pointer-events: none;
}
.feature-card:nth-child(1)::before { background: var(--accent-teal); }
.feature-card:nth-child(2)::before { background: var(--accent-sky); }
.feature-card:nth-child(3)::before { background: var(--accent-lime); }
.feature-card h3 {
  margin: .5rem 0 .5rem;
  font-size: 1.1rem;
  font-weight: 600;
}
.feature-card p { margin: 0; }
.feature-icon {
  font-size: 1.75rem;
  margin-bottom: .5rem;
  display: inline-block;
}

/* ---------- Typography helpers ---------- */
.muted { color: var(--text-muted); }
.faint { color: var(--text-faint); }
.small { font-size: .875rem; }
.meta-sm { font-size: .8rem; color: var(--text-faint); font-family: var(--font-mono); }
.area-badge { display: inline-block; font-size: .9rem; font-weight: 600; color: var(--accent-teal); margin: 0 0 .5rem; }
.count-line { font-size: .875rem; color: var(--text-faint); margin-bottom: 1.25rem; }
.empty { color: var(--text-faint); text-align: center; padding: 3rem 0; }
.flash { animation: flash 1.6s ease-out; }
@keyframes flash { 0% { background: rgba(232,115,92, .15); } 100% { background: transparent; } }

/* ---------- Prose ---------- */
.prose p { margin: .85rem 0; line-height: 1.7; }
.prose h1, .prose h2, .prose h3 { font-family: var(--font-serif); line-height: 1.3; margin: 1.75rem 0 .6rem; }
.prose h2 { font-size: 1.65rem; }
.prose h3 { font-size: 1.3rem; }
.prose ul, .prose ol { padding-left: 1.5rem; margin: .85rem 0; }
.prose li { margin: .35rem 0; }
.prose code {
  background: var(--bg-code);
  padding: .12rem .4rem;
  border-radius: .35rem;
  font-size: .875em;
  font-family: var(--font-mono);
}
.prose pre { background: var(--bg-code); padding: 1rem; border-radius: .65rem; overflow-x: auto; }
.prose pre code { background: none; padding: 0; }
.prose blockquote { border-left: 3px solid var(--accent-teal); margin: 1rem 0; padding: .25rem 1rem; color: var(--text-muted); }

/* ---------- Forms ---------- */
.form-box { max-width: 46rem; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 1.5rem; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: .4rem; color: var(--text-muted); }
input[type=text], input[type=email], input[type=password], textarea, select {
  width: 100%;
  padding: .75rem .9rem;
  border-radius: .65rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font: inherit;
  font-size: .95rem;
  transition: border-color .15s, box-shadow .15s;
}
textarea { resize: vertical; }
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent-teal);
  box-shadow: 0 0 0 3px rgba(232,115,92, .12);
}
.hint { font-size: .8rem; color: var(--text-faint); margin-top: .35rem; line-height: 1.5; }
.form-status { margin-top: 1rem; padding: .85rem 1rem; border-radius: .65rem; display: none; }
.form-status.ok { display: block; background: rgba(232,115,92, .12); color: #9c4221; }
.form-status.err { display: block; background: rgba(220, 38, 38, .10); color: #991b1b; }
html.dark .form-status.ok { background: rgba(232,115,92, .12); color: #fdba74; }
html.dark .form-status.err { background: rgba(220, 38, 38, .12); color: #fca5a5; }
.preview-pane { border: 1px dashed var(--border); border-radius: .65rem; padding: 1.25rem; min-height: 8rem; background: var(--bg-card); }

/* ---------- Admin ---------- */
.admin-bar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.token-input { max-width: 24rem; }
.sub-card { border: 1px solid var(--border); border-radius: 1rem; padding: 1.35rem; background: var(--bg-card); margin-bottom: 1rem; }
.sub-card .head { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.sub-actions { display: flex; gap: .6rem; margin-top: 1rem; flex-wrap: wrap; }
details.sub-details { margin-top: .85rem; }
details.sub-details summary { cursor: pointer; color: var(--text-muted); font-size: .875rem; }
.sub-body { margin-top: .85rem; padding: 1rem; background: var(--bg-code); border-radius: .65rem; font-size: .875rem; white-space: pre-wrap; max-height: 24rem; overflow: auto; }
.btn-login { display: inline-flex; align-items: center; gap: .5rem; }
.login-icon { width: 1rem; height: 1rem; flex: none; vertical-align: middle; }
html.dark .login-icon[src$="github-mark.svg"] { filter: brightness(0) invert(1); }
.scr-box { margin-top: .75rem; padding: .6rem .8rem; border: 1px solid var(--border, #ddd); border-radius: 8px; background: var(--code-bg, #f6f8fa); }
.scr-head { font-size: .9rem; margin-bottom: .35rem; }
.scr-scores { margin: .35rem 0; display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.scr-score strong { font-size: 1.1rem; }

/* ---------- Footer ---------- */
.footer {
  padding: 3rem 2rem;
  text-align: center;
  font-size: .875rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}
.footer a { color: var(--text-muted); }
.footer a:hover { color: var(--text); text-decoration: underline; }

/* ---------- Utility ---------- */
.mx-2 { margin-left: .5rem; margin-right: .5rem; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  html { scroll-behavior: auto; }
}