/* Whipscribe /tools-online — shared premium styling.
 * Matches ink/violet palette used across academics.html, use-cases/*.
 * Mobile-first. No external fonts, no binary weight.
 */
:root {
  --v-900:#4c1d95; --v-800:#6d28d9; --v-700:#7c3aed; --v-500:#a78bfa;
  --v-300:#ddd6fe; --v-100:#f5f3ff; --v-50:#faf9ff;
  --ink-900:#0f172a; --ink-700:#334155; --ink-500:#64748b;
  --ink-300:#cbd5e1; --ink-200:#e2e8f0; --ink-100:#f1f5f9; --ink-50:#f8fafc;
  --white:#fff;
  --ok-600:#16a34a; --ok-100:#dcfce7;
  --err-700:#b91c1c; --err-100:#fee2e2;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; background: #fff; color: var(--ink-900);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro", "Inter", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ── hero ─────────────────────────────────────────────────────────────── */
.hero {
  text-align: center; padding: 56px 20px 32px;
  background: linear-gradient(180deg, var(--v-50) 0%, #fff 72%);
}
.hero .pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 999px;
  background: var(--v-100); color: var(--v-800);
  font-size: 12.5px; font-weight: 600; margin-bottom: 14px;
}
.hero h1 {
  font-size: clamp(28px, 4.8vw, 44px);
  font-weight: 800; letter-spacing: -0.02em; line-height: 1.1;
  margin: 0 0 12px;
}
.hero h1 .accent { color: var(--v-700); }
.hero p.sub {
  font-size: clamp(15px, 2.1vw, 18px);
  color: var(--ink-500); max-width: 660px; margin: 0 auto; line-height: 1.55;
}
.trust-row {
  margin-top: 18px; display: flex; flex-wrap: wrap; gap: 10px 18px;
  justify-content: center; color: var(--ink-700); font-size: 13px;
}
.trust-row span { display: inline-flex; gap: 6px; align-items: center; }

/* ── tool surface ─────────────────────────────────────────────────────── */
.tool-wrap {
  max-width: 780px; margin: 0 auto; padding: 0 20px 48px;
}
.tool-card {
  background: #fff; border: 1px solid var(--ink-200); border-radius: 16px;
  padding: 20px; box-shadow: 0 14px 38px -22px rgba(15,23,42,.22);
}
.drop-zone {
  border: 1.5px dashed var(--v-300); background: var(--v-50);
  border-radius: 12px; padding: 36px 20px;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  cursor: pointer; text-align: center; transition: background .14s, border-color .14s;
  outline-offset: 2px;
}
.drop-zone:hover, .drop-zone:focus { background: var(--v-100); border-color: var(--v-500); }
.drop-zone.is-drag { background: var(--v-100); border-color: var(--v-700); }
.drop-zone .ico svg { width: 40px; height: 40px; color: var(--v-700); }
.drop-zone .hint { color: var(--ink-500); font-size: 13.5px; }
.drop-zone strong { color: var(--ink-900); }
.drop-zone button {
  margin-top: 8px; background: var(--v-700); color: #fff; border: 0;
  padding: 9px 16px; border-radius: 8px; font-weight: 600; font-size: 14px; cursor: pointer;
}
.drop-zone button:hover { background: var(--v-800); }

.options {
  display: grid; grid-template-columns: 1fr; gap: 12px; margin-top: 18px;
}
@media (min-width: 600px) { .options { grid-template-columns: repeat(2, 1fr); } }
.options label { font-size: 13px; font-weight: 600; color: var(--ink-700); display: block; margin-bottom: 4px; }
.options select, .options input[type="text"], .options input[type="number"], .options textarea {
  width: 100%; padding: 9px 10px; border: 1px solid var(--ink-200); border-radius: 8px;
  font: inherit; color: var(--ink-900); background: #fff; font-size: 14px;
}
.options select:focus, .options input:focus, .options textarea:focus {
  outline: 2px solid var(--v-500); outline-offset: 1px; border-color: var(--v-500);
}

.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 18px; }
button.primary, a.primary {
  background: var(--v-700); color: #fff; border: 0; border-radius: 10px;
  padding: 12px 20px; font-weight: 700; font-size: 15px; cursor: pointer;
  text-decoration: none; display: inline-flex; align-items: center; gap: 8px;
}
button.primary:hover, a.primary:hover { background: var(--v-800); }
button.primary:disabled { background: var(--ink-300); cursor: not-allowed; }
button.ghost, a.ghost {
  background: #fff; color: var(--ink-700); border: 1px solid var(--ink-200);
  border-radius: 10px; padding: 11px 16px; font-weight: 600; font-size: 14px;
  cursor: pointer; text-decoration: none;
}
button.ghost:hover, a.ghost:hover { border-color: var(--v-300); color: var(--v-800); }

.status { margin-top: 14px; font-size: 13.5px; color: var(--ink-500); }
.progress-rail {
  margin-top: 10px; height: 8px; background: var(--ink-100); border-radius: 999px; overflow: hidden;
}
.progress-bar { height: 100%; background: linear-gradient(90deg, var(--v-700), var(--v-500)); width: 0%; transition: width .3s ease; }

.result-panel, .error-panel {
  margin-top: 14px; padding: 14px; border-radius: 10px; display: none;
}
.result-panel { background: var(--ok-100); border: 1px solid #bbf7d0; }
.result-panel a { color: var(--ok-600); font-weight: 700; text-decoration: none; }
.error-panel { background: var(--err-100); border: 1px solid #fecaca; color: var(--err-700); }

/* ── sections ─────────────────────────────────────────────────────────── */
section.band { max-width: 1040px; margin: 0 auto; padding: 48px 20px; }
section.band h2 {
  font-size: clamp(22px, 3.2vw, 28px); font-weight: 800; letter-spacing: -0.01em;
  margin: 0 0 20px; color: var(--ink-900);
}
section.band .subhead { color: var(--ink-500); font-size: 15px; margin: -10px 0 24px; max-width: 620px; }

/* how-it-works: 3-step pipeline */
.pipeline {
  display: grid; grid-template-columns: 1fr; gap: 14px;
}
@media (min-width: 720px) { .pipeline { grid-template-columns: repeat(3, 1fr); gap: 20px; } }
.step {
  background: #fff; border: 1px solid var(--ink-200); border-radius: 12px;
  padding: 20px; display: flex; flex-direction: column; align-items: flex-start; gap: 10px;
}
.step .num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 999px;
  background: var(--v-100); color: var(--v-800); font-weight: 700; font-size: 13px;
}
.step h3 { margin: 0; font-size: 15px; font-weight: 700; color: var(--ink-900); }
.step p { margin: 0; font-size: 14px; color: var(--ink-700); line-height: 1.55; }
.step svg { color: var(--v-700); }

/* FAQ */
details.faq {
  border: 1px solid var(--ink-200); border-radius: 10px; padding: 14px 16px;
  margin-bottom: 10px; background: #fff;
}
details.faq[open] { border-color: var(--v-300); }
details.faq summary {
  cursor: pointer; font-weight: 700; font-size: 15px; color: var(--ink-900);
  list-style: none; padding-right: 20px; position: relative;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after {
  content: "+"; position: absolute; right: 0; top: 0; font-size: 18px; color: var(--v-700);
  transition: transform .16s;
}
details.faq[open] summary::after { content: "−"; }
details.faq p { margin: 10px 0 0; color: var(--ink-700); font-size: 14px; line-height: 1.6; }

/* cross-promo band */
.xband {
  background: linear-gradient(180deg, var(--v-50), #fff);
  border-top: 1px solid var(--ink-100); border-bottom: 1px solid var(--ink-100);
  padding: 32px 20px; text-align: center;
}
.xband h2 { margin: 0 0 8px; font-size: 22px; }
.xband p { margin: 0 auto 16px; color: var(--ink-700); max-width: 540px; font-size: 14.5px; }

/* hub tiles (other tools) */
.hub-tiles { display: grid; grid-template-columns: 1fr; gap: 14px; margin-top: 20px; }
@media (min-width: 600px) { .hub-tiles { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .hub-tiles { grid-template-columns: repeat(3, 1fr); } }
a.tile {
  display: block; background: #fff; border: 1px solid var(--ink-200); border-radius: 14px;
  padding: 22px; text-decoration: none; color: var(--ink-900);
  transition: transform .1s, box-shadow .16s, border-color .16s;
}
a.tile:hover { transform: translateY(-2px); border-color: var(--v-300); box-shadow: 0 12px 32px -16px rgba(15,23,42,.18); }
a.tile .tag {
  display: inline-block; font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: var(--v-700); margin-bottom: 10px;
}
a.tile h3 { margin: 0 0 6px; font-size: 17px; font-weight: 700; }
a.tile p { margin: 0; font-size: 13.5px; color: var(--ink-700); line-height: 1.55; }

/* footer */
footer.site { padding: 28px 20px; text-align: center; font-size: 12.5px; color: var(--ink-500); border-top: 1px solid var(--ink-100); }
footer.site a { color: var(--ink-700); text-decoration: none; }
footer.site a:hover { color: var(--v-700); }
footer.site .row { margin-top: 8px; }

/* breadcrumbs */
nav.crumbs {
  max-width: 1120px; margin: 0 auto; padding: 10px 20px 0;
  font-size: 13.5px; color: var(--ink-700); display: flex; flex-wrap: wrap; gap: 4px; align-items: center;
}
nav.crumbs a { color: var(--ink-700); text-decoration: none; font-weight: 500; }
nav.crumbs a:hover { color: var(--v-700); text-decoration: underline; }
nav.crumbs .sep { color: var(--ink-300); font-size: 14px; margin: 0 2px; }
nav.crumbs .current { color: var(--ink-900); font-weight: 600; }

/* tool nav (back / next) */
.tool-nav {
  max-width: 1120px; margin: 0 auto; padding: 10px 20px 0;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px;
}
.tool-nav a {
  font-size: 13px; font-weight: 600; color: var(--ink-500);
  text-decoration: none; padding: 6px 12px;
  border: 1px solid var(--ink-200); border-radius: 8px;
  display: inline-flex; align-items: center; gap: 5px; transition: color .14s, border-color .14s;
}
.tool-nav a:hover { color: var(--v-700); border-color: var(--v-300); }

/* blog strip */
.blog-strip {
  max-width: 1040px; margin: 0 auto 0; padding: 20px 20px 0;
  border-top: 1px solid var(--ink-100);
}
.blog-strip .bs-label {
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em;
  color: var(--ink-500); margin-bottom: 10px;
}
.blog-strip .bs-links {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.blog-strip .bs-links a {
  font-size: 13px; font-weight: 500; color: var(--v-700); text-decoration: none;
  padding: 6px 12px; border: 1px solid var(--v-300); border-radius: 999px;
  background: var(--v-50); transition: background .14s, border-color .14s;
  display: inline-flex; align-items: center; gap: 5px;
}
.blog-strip .bs-links a:hover { background: var(--v-100); border-color: var(--v-500); }

/* clickable tool icon link */
.ico-link { display: contents; }
.ico-link svg { transition: opacity .15s; }
.ico-link:hover svg { opacity: .75; }