/* ============================================================
   ReWiseEd Research Tools — shared design system
   Scholarly "trust & authority" theme · light + dark
   No external assets — system font stacks only.
   ============================================================ */

:root {
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Roboto, "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(23, 20, 14, .05);
  --shadow-md: 0 4px 16px rgba(23, 20, 14, .08);
  --shadow-lg: 0 12px 40px rgba(23, 20, 14, .14);
  --transition: 180ms cubic-bezier(.2, .7, .3, 1);

  --bg: #faf9f6;
  --surface: #ffffff;
  --surface-2: #f2efe9;
  --ink: #1c1a17;
  --ink-2: #44403a;
  --muted: #716b60;
  --border: #e5e1d8;
  --border-strong: #cfc9bc;
  --accent: #96600b;
  --accent-strong: #7a4e08;
  --accent-soft: #f6ead2;
  --on-accent: #ffffff;
  --btn-bg: #211e1a;
  --btn-fg: #ffffff;
  --btn-hover: #38332c;
  --danger: #b91c1c;
  --danger-soft: #fdecec;
  --success: #166534;
  --success-soft: #e8f5ec;
  --warn: #92580a;
  --warn-soft: #fdf3e0;
  --code-bg: #201d19;
  --code-fg: #f0ece3;
  --scrim: rgba(20, 17, 13, .45);
}

[data-theme="dark"] {
  --bg: #131110;
  --surface: #1d1a18;
  --surface-2: #272320;
  --ink: #ece7de;
  --ink-2: #cbc4b8;
  --muted: #9b9488;
  --border: #37322c;
  --border-strong: #4c463d;
  --accent: #dda93f;
  --accent-strong: #e8bc63;
  --accent-soft: #33290f;
  --on-accent: #201704;
  --btn-bg: #dda93f;
  --btn-fg: #201704;
  --btn-hover: #e8bc63;
  --danger: #f87171;
  --danger-soft: #3a1717;
  --success: #6ee7a0;
  --success-soft: #12301d;
  --warn: #e8b45c;
  --warn-soft: #33270e;
  --code-bg: #0e0c0a;
  --code-fg: #e8e3d9;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, .45);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, .55);
  --scrim: rgba(0, 0, 0, .6);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--ink);
  transition: background var(--transition), color var(--transition);
}
/* layered ambient background: dot grid fading down + warm glow */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image: radial-gradient(circle, var(--border-strong) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.5), transparent 480px);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,.5), transparent 480px);
}
h1, h2, h3, h4 { font-family: var(--font-serif); letter-spacing: -.01em; color: var(--ink); }
a { color: var(--accent); }
::selection { background: var(--accent-soft); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ---------- Top navigation ---------- */
.topnav {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 10px;
  padding: 10px clamp(16px, 4vw, 32px);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.topnav.scrolled { box-shadow: var(--shadow-md); }
.brand {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-serif); font-weight: 700; font-size: 17px;
  color: var(--ink); text-decoration: none; white-space: nowrap;
}
.brand svg { color: var(--accent); }
.topnav .spacer { flex: 1; }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; padding: 0;
  background: transparent; color: var(--ink-2);
  border: 1px solid transparent; border-radius: var(--radius-sm);
  cursor: pointer; transition: background var(--transition), color var(--transition);
}
button.icon-btn:hover:not(:disabled) { background: var(--surface-2); color: var(--ink); box-shadow: none; transform: none; }

.tool-menu { position: relative; }
.tool-menu summary {
  list-style: none; cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 12px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600; color: var(--ink-2);
  border: 1px solid transparent;
  transition: background var(--transition);
}
.tool-menu summary::-webkit-details-marker { display: none; }
.tool-menu summary:hover { background: var(--surface-2); }
.tool-menu[open] summary { background: var(--surface-2); }
.tool-menu .menu {
  position: absolute; right: 0; top: calc(100% + 6px); z-index: 50;
  min-width: 270px; padding: 6px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
}
.tool-menu .menu a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: var(--radius-sm);
  text-decoration: none; color: var(--ink); font-size: 14px; font-weight: 500;
}
.tool-menu .menu a:hover { background: var(--surface-2); }
.tool-menu .menu a.active { background: var(--accent-soft); color: var(--accent-strong); }
.tool-menu .menu a svg { color: var(--accent); flex: none; }

/* ---------- Motion ---------- */
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.hero, main > * { animation: rise 480ms cubic-bezier(.2, .7, .3, 1) backwards; }
main > :nth-child(1) { animation-delay: 60ms; }
main > :nth-child(2) { animation-delay: 120ms; }
main > :nth-child(3) { animation-delay: 180ms; }
main > :nth-child(4) { animation-delay: 240ms; }
.tools-grid .tool-tile { animation: rise 480ms cubic-bezier(.2, .7, .3, 1) backwards; }
.tools-grid .tool-tile:nth-child(1) { animation-delay: 100ms; }
.tools-grid .tool-tile:nth-child(2) { animation-delay: 150ms; }
.tools-grid .tool-tile:nth-child(3) { animation-delay: 200ms; }
.tools-grid .tool-tile:nth-child(4) { animation-delay: 250ms; }
.tools-grid .tool-tile:nth-child(5) { animation-delay: 300ms; }
.tools-grid .tool-tile:nth-child(6) { animation-delay: 350ms; }

/* ---------- Page hero ---------- */
.hero {
  position: relative;
  padding: clamp(28px, 6vw, 56px) 20px 8px;
  text-align: center;
}
.hero::before {
  content: "";
  position: absolute; inset: -40px 0 0;
  margin: 0 auto; width: min(680px, 90%); height: 100%;
  background: radial-gradient(ellipse 60% 70% at 50% 20%, var(--accent-soft), transparent 70%);
  opacity: .8; pointer-events: none; z-index: -1;
}
.hero .tool-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px; margin-bottom: 14px;
  background: var(--accent-soft); color: var(--accent);
  border-radius: var(--radius-lg); border: 1px solid var(--border);
}
.hero h1 { margin: 0 0 10px; font-size: clamp(28px, 5vw, 44px); line-height: 1.08; letter-spacing: -.02em; }
.hero h1 .accent-word { font-style: italic; color: var(--accent-strong); }
.hero p.lede { margin: 0 auto; max-width: 640px; color: var(--muted); font-size: clamp(15px, 2vw, 17.5px); line-height: 1.65; }

/* landing hero extras */
.hero.landing { padding-bottom: 18px; }
.hero.landing h1 { font-size: clamp(34px, 6vw, 58px); }
.stat-row {
  display: flex; justify-content: center; gap: clamp(24px, 6vw, 64px);
  margin: 26px auto 4px; flex-wrap: wrap;
}
.stat { text-align: center; }
.stat b { display: block; font-family: var(--font-serif); font-size: clamp(22px, 3vw, 30px); font-weight: 700; color: var(--ink); line-height: 1.2; }
.stat span { font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.provider-strip {
  display: flex; justify-content: center; gap: 8px; flex-wrap: wrap;
  margin: 22px auto 0; max-width: 720px;
}
.provider-strip .pill {
  font-size: 12px; font-weight: 600; color: var(--muted);
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 999px; padding: 5px 13px;
}

/* ---------- Layout ---------- */
main { max-width: 900px; margin: 0 auto; padding: 20px clamp(16px, 4vw, 32px) 72px; }

/* Split workspace: input pinned left, output streams right (wide screens) */
@media (min-width: 1100px) {
  main.split {
    max-width: 1300px;
    display: grid;
    grid-template-columns: minmax(400px, 5fr) minmax(0, 7fr);
    grid-template-rows: auto 1fr;
    gap: 0 26px;
    align-items: start;
  }
  main.split > #settings { grid-column: 1 / -1; }
  main.split > .card.input-card { grid-area: 2 / 1; position: sticky; top: 78px; margin-bottom: 0; }
  main.split > #out { grid-area: 2 / 2; min-width: 0; }
}
.empty-state-card {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: clamp(36px, 6vw, 64px) 24px;
  text-align: center; color: var(--muted);
}
.empty-state-card svg { color: var(--border-strong); margin-bottom: 12px; }
.empty-state-card p { margin: 0 auto; max-width: 340px; font-size: 14.5px; line-height: 1.6; }
.empty-state-card .es-title { font-family: var(--font-serif); font-size: 18px; font-weight: 700; color: var(--ink-2); display: block; margin-bottom: 4px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(18px, 3vw, 26px);
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm);
}
.card h2 { margin: 0 0 4px; font-size: 19px; }
.overline {
  display: block;
  font-family: var(--font-sans);
  font-size: 11px; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent-strong);
  margin-bottom: 6px;
}
.hint { font-size: 13.5px; color: var(--muted); margin: 4px 0 14px; }
.field-label { display: block; font-size: 13.5px; font-weight: 600; color: var(--ink-2); margin: 0 0 6px; }
.field-foot { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-top: 6px; font-size: 12.5px; color: var(--muted); }
.chip-row { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  background: var(--surface-2); color: var(--ink-2);
  border: 1px solid var(--border); border-radius: 999px;
  padding: 4px 14px; min-height: 34px; font-size: 12.5px; font-weight: 600; cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
button.chip:hover:not(:disabled) { background: var(--surface-2); border-color: var(--accent); color: var(--accent-strong); box-shadow: none; transform: none; }

/* ---------- Form controls ---------- */
textarea, input, select {
  width: 100%;
  font-family: inherit; font-size: 15px;
  padding: 11px 13px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}
textarea:focus, input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
textarea { min-height: 200px; resize: vertical; font-family: var(--font-mono); font-size: 13.5px; line-height: 1.55; }
textarea::placeholder, input::placeholder { color: var(--muted); opacity: .75; }
select { width: auto; cursor: pointer; }

/* ---------- Buttons ---------- */
button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--btn-bg); color: var(--btn-fg);
  border: 1px solid transparent; border-radius: var(--radius-sm);
  padding: 10px 20px; min-height: 44px;
  font-family: inherit; font-size: 14.5px; font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform 120ms ease, box-shadow var(--transition);
}
button:hover:not(:disabled) { background: var(--btn-hover); box-shadow: var(--shadow-md); transform: translateY(-1px); }
button:active:not(:disabled) { transform: scale(.98); box-shadow: none; }
button:disabled { opacity: .45; cursor: not-allowed; }
button.ghost { background: transparent; color: var(--ink-2); border-color: var(--border-strong); }
button.ghost:hover:not(:disabled) { background: var(--surface-2); color: var(--ink); }
button.danger { background: transparent; color: var(--danger); border-color: var(--danger); }
button.danger:hover:not(:disabled) { background: var(--danger-soft); }
button svg { flex: none; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 14px; }
.row .push { margin-left: auto; }
kbd {
  font-family: var(--font-mono); font-size: 11px;
  background: var(--surface-2); color: var(--muted);
  border: 1px solid var(--border-strong); border-bottom-width: 2px;
  border-radius: 4px; padding: 1px 5px;
}

/* ---------- Status badges ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 600;
  padding: 3px 10px; border-radius: 999px;
  background: var(--surface-2); color: var(--ink-2);
  border: 1px solid var(--border);
}
.badge.ok { background: var(--success-soft); color: var(--success); border-color: transparent; }
.badge.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge.gold { background: var(--accent-soft); color: var(--accent-strong); border-color: transparent; }

/* ---------- Result / markdown output ---------- */
.result {
  background: var(--surface);
  border-top: 1px solid var(--border);
  margin-top: 16px; padding-top: 16px;
  font-size: 15px; color: var(--ink);
  overflow-wrap: break-word;
}
.result > :first-child { margin-top: 0; }
.result h1 { font-size: 24px; margin: 22px 0 8px; }
.result h2 { font-size: 20px; margin: 20px 0 10px; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
.result h3 { font-size: 17px; margin: 16px 0 6px; }
.result p { margin: 10px 0; }
.result ul, .result ol { margin: 10px 0; padding-left: 26px; }
.result li { margin: 4px 0; }
.result blockquote {
  margin: 12px 0; padding: 8px 16px;
  border-left: 3px solid var(--accent);
  background: var(--surface-2); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink-2);
}
.result hr { border: 0; border-top: 1px solid var(--border); margin: 18px 0; }
.result pre {
  background: var(--code-bg); color: var(--code-fg);
  padding: 14px 16px; border-radius: var(--radius-sm);
  overflow-x: auto; font-size: 13px; line-height: 1.5;
}
.result code { font-family: var(--font-mono); background: var(--surface-2); padding: 1.5px 6px; border-radius: 4px; font-size: 13px; }
.result pre code { background: transparent; padding: 0; color: inherit; }
.result .tbl-wrap { overflow-x: auto; margin: 12px 0; border: 1px solid var(--border); border-radius: var(--radius-sm); }
.result table { border-collapse: collapse; width: 100%; font-size: 14px; }
.result th, .result td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
.result th { background: var(--surface-2); font-weight: 700; font-size: 13px; }
.result tr:last-child td { border-bottom: 0; }
.error-box {
  display: flex; gap: 10px; align-items: flex-start;
  background: var(--danger-soft); color: var(--danger);
  border-radius: var(--radius-sm); padding: 12px 14px;
  font-size: 14px; font-weight: 500;
}

/* ---------- Streaming / loading ---------- */
.spinner {
  display: inline-block; width: 15px; height: 15px;
  border: 2px solid var(--border-strong); border-top-color: var(--accent);
  border-radius: 50%; animation: spin .7s linear infinite;
  vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.stream-status { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 14px; }
.cursor-blink::after { content: "▍"; color: var(--accent); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.skeleton {
  border-radius: var(--radius-sm);
  background: linear-gradient(90deg, var(--surface-2) 25%, var(--border) 50%, var(--surface-2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s ease infinite;
}
@keyframes shimmer { to { background-position: -200% 0; } }

/* ---------- Settings panel ---------- */
details.settings {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 0; margin-bottom: 18px;
  box-shadow: var(--shadow-sm); overflow: visible;
}
details.settings summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; gap: 10px;
  padding: 14px 20px; font-weight: 600; font-size: 14.5px;
  border-radius: var(--radius-lg);
}
details.settings summary::-webkit-details-marker { display: none; }
details.settings summary:hover { background: var(--surface-2); }
details.settings[open] summary { border-bottom: 1px solid var(--border); border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
details.settings .settings-body { padding: 18px 20px 20px; }
details.settings[open] .settings-body { animation: rise 240ms cubic-bezier(.2, .7, .3, 1); }
.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.settings-grid label { font-size: 12.5px; font-weight: 600; color: var(--ink-2); display: flex; flex-direction: column; gap: 5px; }
.settings-grid .full { grid-column: 1 / -1; }
.key-wrap { position: relative; }
.key-wrap input { padding-right: 44px; }
.key-wrap .icon-btn { position: absolute; right: 3px; top: 50%; transform: translateY(-50%); width: 36px; height: 36px; }
.settings-actions { display: flex; gap: 10px; align-items: center; margin-top: 16px; flex-wrap: wrap; }

/* ---------- Toasts ---------- */
#toast-root { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 100; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; }
.toast {
  background: var(--btn-bg); color: var(--btn-fg);
  padding: 10px 18px; border-radius: 999px;
  font-size: 14px; font-weight: 600;
  box-shadow: var(--shadow-lg);
  animation: toast-in 200ms cubic-bezier(.2, .9, .3, 1.2);
}
.toast.error { background: var(--danger); color: #fff; }
@keyframes toast-in { from { opacity: 0; transform: translateY(10px); } }

/* ---------- Landing page ---------- */
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(255px, 1fr)); gap: 16px; margin-top: 24px; }
.tool-tile {
  display: flex; flex-direction: column; gap: 8px;
  text-decoration: none; color: inherit;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 22px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.tool-tile:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--accent); }
.tool-tile .tile-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  background: var(--accent-soft); color: var(--accent);
  border-radius: var(--radius);
  transition: transform var(--transition), background var(--transition), color var(--transition);
}
.tool-tile:hover .tile-icon { transform: scale(1.08) rotate(-3deg); background: var(--accent); color: var(--on-accent); }
.tool-tile h3 { margin: 4px 0 0; font-size: 17px; }
.tool-tile p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.5; }
.tool-tile .tile-go { margin-top: auto; padding-top: 8px; font-size: 13px; font-weight: 700; color: var(--accent-strong); display: inline-flex; align-items: center; gap: 5px; }
.tool-tile .tile-go svg { transition: transform var(--transition); }
.tool-tile:hover .tile-go svg { transform: translateX(4px); }
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-top: 8px; }
.step { display: flex; gap: 12px; align-items: flex-start; font-size: 14px; color: var(--ink-2); }
.step .num {
  flex: none; width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent-soft); color: var(--accent-strong);
  font-weight: 700; font-size: 13px; border-radius: 999px;
  font-family: var(--font-serif);
}
footer.site { text-align: center; color: var(--muted); font-size: 13px; padding: 8px 20px 40px; }
footer.site a { color: var(--muted); }
.site-foot {
  border-top: 1px solid var(--border);
  margin-top: 40px; padding: 36px clamp(16px, 4vw, 32px) 48px;
}
.site-foot .foot-grid {
  max-width: 900px; margin: 0 auto;
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 28px;
}
.site-foot h4 { margin: 0 0 10px; font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-family: var(--font-sans); }
.site-foot .foot-brand { font-family: var(--font-serif); font-weight: 700; font-size: 17px; color: var(--ink); display: inline-flex; gap: 8px; align-items: center; margin-bottom: 8px; }
.site-foot .foot-brand svg { color: var(--accent); }
.site-foot p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.6; max-width: 300px; }
.site-foot ul { list-style: none; margin: 0; padding: 0; }
.site-foot li { margin: 6px 0; }
.site-foot ul a { color: var(--ink-2); text-decoration: none; font-size: 13.5px; }
.site-foot ul a:hover { color: var(--accent-strong); text-decoration: underline; }
@media (max-width: 720px) { .site-foot .foot-grid { grid-template-columns: 1fr; gap: 22px; } }

/* ---------- Literature finder ---------- */
.search-row { display: flex; gap: 10px; }
.search-row input { flex: 1; }
.filters { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 12px; font-size: 13px; color: var(--muted); }
.filters input[type="number"] { width: 92px; padding: 7px 10px; font-size: 13.5px; }
.filters select { padding: 7px 10px; font-size: 13.5px; }
.paper {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 18px 20px; margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.paper:hover { border-color: var(--border-strong); box-shadow: var(--shadow-md); }
.paper h3 { margin: 0 0 4px; font-size: 16.5px; line-height: 1.35; }
.paper .meta { font-size: 13px; color: var(--muted); margin: 2px 0 8px; }
.paper .abstract { font-size: 14px; color: var(--ink-2); margin: 8px 0; line-height: 1.55; }
.paper .paper-foot { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 10px; }
.paper .links { display: flex; gap: 14px; flex-wrap: wrap; margin-left: auto; }
a.link { color: var(--accent-strong); text-decoration: none; font-weight: 600; font-size: 13px; display: inline-flex; align-items: center; gap: 4px; }
a.link:hover { text-decoration: underline; }
.empty-state { text-align: center; color: var(--muted); padding: 40px 20px; font-size: 15px; }
.empty-state svg { color: var(--border-strong); margin-bottom: 10px; }

/* ---------- Progress bar (batch operations) ---------- */
.progress-track {
  height: 4px; border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden; margin: 10px 0 2px;
}
.progress-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  border-radius: 999px;
  transition: width 250ms cubic-bezier(.2, .7, .3, 1);
}

/* ---------- Themed scrollbars for scrollable islands ---------- */
.result pre::-webkit-scrollbar, .tbl-wrap::-webkit-scrollbar, textarea::-webkit-scrollbar { height: 8px; width: 8px; }
.result pre::-webkit-scrollbar-thumb, .tbl-wrap::-webkit-scrollbar-thumb, textarea::-webkit-scrollbar-thumb {
  background: var(--border-strong); border-radius: 999px;
}
.result pre::-webkit-scrollbar-track, .tbl-wrap::-webkit-scrollbar-track, textarea::-webkit-scrollbar-track { background: transparent; }

/* ---------- Copy-success morph ---------- */
button.copied, button.ghost.copied {
  color: var(--success); border-color: var(--success);
  background: var(--success-soft);
}

@media (max-width: 640px) {
  .settings-grid { grid-template-columns: 1fr; }
  .search-row { flex-direction: column; }
  .brand span { display: none; }
  .paper .links { margin-left: 0; }
}

/* ---------- Print: only the content matters ---------- */
@media print {
  body { background: #fff; color: #000; font-family: var(--font-serif); }
  body::before, .topnav, details.settings, .hero .tool-icon,
  .input-card, .chip-row, .row, button, .empty-state-card,
  .site-foot, footer.site, .progress-track, #toast-root { display: none !important; }
  main, main.split { display: block; max-width: 100%; padding: 0; }
  .card { border: 0; box-shadow: none; padding: 0; }
  .result { border-top: 0; font-size: 12pt; line-height: 1.5; }
  .result pre { background: #f4f4f4; color: #000; border: 1px solid #ccc; }
  .result th { background: #eee; }
  a { color: #000; text-decoration: none; }
  .paper { border: 0; border-bottom: 1px solid #ccc; border-radius: 0; box-shadow: none; padding: 10pt 0; }
  .hero { padding: 0 0 12pt; text-align: left; }
  .hero p.lede { display: none; }
}