:root {
  --ink: #17211d;
  --muted: #68736d;
  --paper: #fffef9;
  --cream: #f2f0e8;
  --line: #d7d8cf;
  --green: #1f5b46;
  --green-soft: #dbe9df;
  --amber: #a56422;
  --amber-soft: #f7ead4;
  --red: #a83d34;
  --red-soft: #f6dfda;
  --blue: #345d8c;
  --shadow: 0 18px 50px rgba(34, 47, 41, .09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 8%, rgba(213, 224, 212, .7), transparent 25rem),
    linear-gradient(180deg, #f7f6ef 0, var(--cream) 52%, #ebeae2 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
}

button, input { font: inherit; }
button { color: inherit; }
.hidden { display: none !important; }

.topbar {
  max-width: 1240px;
  margin: 0 auto;
  min-height: 86px;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(23, 33, 29, .13);
}

.brand { color: inherit; display: flex; gap: 12px; align-items: center; text-decoration: none; }
.brand-mark {
  width: 42px; height: 42px; display: grid; place-items: center;
  background: var(--ink); color: white; border-radius: 50%;
  font-family: Georgia, serif; font-size: 24px; font-style: italic;
}
.brand strong, .brand small { display: block; }
.brand strong { font-family: Georgia, serif; font-size: 18px; letter-spacing: .02em; }
.brand small { color: var(--muted); font-size: 11px; margin-top: 2px; letter-spacing: .08em; }
nav { display: flex; gap: 8px; }
.nav-button, .text-button {
  border: 0; background: transparent; cursor: pointer; padding: 10px 12px;
  font-size: 13px; color: var(--muted); border-radius: 8px;
}
.nav-button:hover, .text-button:hover { background: rgba(23, 33, 29, .06); color: var(--ink); }
.nav-button span { display: inline-grid; place-items: center; min-width: 20px; height: 20px; margin-left: 4px; border-radius: 20px; background: var(--ink); color: white; font-size: 10px; }

main { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.hero { text-align: center; max-width: 780px; margin: 72px auto 46px; }
.eyebrow, .card-kicker { color: var(--green); font-size: 11px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow { display: flex; align-items: center; justify-content: center; gap: 9px; }
.eyebrow span { width: 24px; height: 1px; background: var(--green); }
.hero h1 { font-family: Georgia, "Times New Roman", serif; font-weight: 400; font-size: clamp(43px, 6vw, 72px); line-height: 1.03; margin: 18px 0; letter-spacing: -.04em; }
.hero h1 em { display: block; color: var(--green); font-weight: 400; }
.hero p { color: var(--muted); line-height: 1.75; font-size: 16px; max-width: 660px; margin: 0 auto; }

.workspace-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(280px, .8fr); gap: 22px; align-items: stretch; }
.paper { background: rgba(255, 254, 249, .92); border: 1px solid rgba(23, 33, 29, .13); box-shadow: var(--shadow); border-radius: 4px; }
.upload-panel { padding: clamp(24px, 4vw, 42px); }
.guide-panel { padding: 34px; background: var(--ink); color: white; border-color: var(--ink); }
.section-heading, .dialog-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.section-heading > div { display: flex; align-items: center; gap: 13px; }
.step { display: inline-flex; align-items: center; justify-content: center; color: var(--green); font: 700 10px/1 Inter, sans-serif; letter-spacing: .12em; text-transform: uppercase; }
.step::before { content: ""; width: 22px; height: 1px; background: currentColor; margin-right: 8px; }
h2, h3, p { margin-top: 0; }
.section-heading h2, .results-head h2, .dialog-head h2 { font: 400 26px/1.1 Georgia, serif; margin: 0; }
.privacy-pill { font-size: 11px; padding: 7px 10px; border-radius: 20px; color: var(--green); background: var(--green-soft); }

.drop-zone {
  width: 100%; min-height: 220px; margin: 28px 0 20px; padding: 30px;
  border: 1px dashed #9aa49e; background: #f7f7f1; border-radius: 3px; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 9px;
  transition: border .2s, background .2s, transform .2s;
}
.drop-zone:hover, .drop-zone.dragover { border-color: var(--green); background: #edf3ed; transform: translateY(-2px); }
.drop-zone strong { font-family: Georgia, serif; font-size: 19px; font-weight: 500; }
.drop-zone > span:last-child { color: var(--muted); font-size: 12px; }
.file-glyph { display: grid; place-items: center; width: 62px; height: 72px; border: 1px solid var(--ink); border-radius: 3px; font: italic 20px Georgia, serif; position: relative; background: var(--paper); margin-bottom: 7px; }
.file-glyph::after { content: "+"; position: absolute; right: -10px; bottom: -10px; width: 24px; height: 24px; display: grid; place-items: center; background: var(--green); color: white; border-radius: 50%; font: 400 18px/1 sans-serif; }

.selected-file { display: flex; gap: 13px; align-items: center; padding: 14px; border: 1px solid var(--line); margin: 20px 0; background: white; }
.file-icon { width: 42px; height: 48px; display: grid; place-items: center; background: var(--green-soft); color: var(--green); font-size: 10px; font-weight: 800; }
.file-meta { min-width: 0; flex: 1; }
.file-meta strong, .file-meta span { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-meta span { color: var(--muted); font-size: 12px; margin-top: 4px; }
.icon-button { border: 0; background: transparent; cursor: pointer; width: 36px; height: 36px; border-radius: 50%; font-size: 24px; color: var(--muted); }
.icon-button:hover { background: rgba(23, 33, 29, .07); color: var(--ink); }

.options-row, .ai-settings { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 18px 0; }
label span { display: block; color: var(--muted); font-size: 11px; margin-bottom: 7px; }
input { width: 100%; border: 1px solid var(--line); background: white; padding: 11px 12px; border-radius: 3px; outline: none; }
input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(31, 91, 70, .1); }

.primary-button, .secondary-button {
  border: 0; cursor: pointer; min-height: 48px; padding: 0 18px; border-radius: 3px; font-weight: 700; transition: opacity .2s, transform .2s;
}
.primary-button { width: 100%; background: var(--green); color: white; display: flex; justify-content: space-between; align-items: center; }
.secondary-button { background: var(--ink); color: white; }
.primary-button:hover:not(:disabled), .secondary-button:hover:not(:disabled) { transform: translateY(-1px); opacity: .92; }
button:disabled { opacity: .45; cursor: not-allowed; }
.error-message { margin: 14px 0 0; color: var(--red); background: var(--red-soft); padding: 12px; font-size: 13px; }

.guide-panel .step { color: #a8c9b6; }
.guide-panel h2 { font: 400 25px Georgia, serif; margin: 13px 0 26px; }
.mini-checklist { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid rgba(255,255,255,.18); }
.mini-checklist li { padding: 13px 4px; border-bottom: 1px solid rgba(255,255,255,.13); font-size: 12px; color: #e4e8e5; }
.mini-checklist li span { display: block; color: #8daf9e; font-size: 9px; margin-bottom: 4px; }
.guide-note { margin-top: 28px; padding: 18px; border: 1px solid rgba(255,255,255,.2); }
.guide-note strong { font: 400 15px Georgia, serif; }
.guide-note p { color: #aeb9b3; font-size: 12px; line-height: 1.6; margin: 8px 0 0; }

.results { margin-top: 80px; padding-top: 30px; border-top: 1px solid rgba(23,33,29,.15); }
.results-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; }
.results-head > div:first-child { display: grid; grid-template-columns: auto 1fr; gap: 9px 15px; align-items: center; }
.results-head p { grid-column: 2; color: var(--muted); font-size: 13px; margin: 0; }
.score-orbit { width: 116px; height: 116px; border: 1px solid var(--green); border-radius: 50%; display: grid; place-items: center; text-align: center; position: relative; }
.score-orbit::before { content: ""; position: absolute; inset: 7px; border: 1px dashed rgba(31,91,70,.35); border-radius: 50%; }
.score-orbit div { z-index: 1; }
.score-orbit strong { font: 400 37px Georgia, serif; }
.score-orbit div span { color: var(--muted); font-size: 12px; }
.score-orbit small { z-index: 1; font-size: 9px; color: var(--green); margin-top: -28px; }

.result-layout { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(300px, .75fr); gap: 22px; align-items: start; }
.check-list { display: grid; gap: 10px; }
.check-item { background: var(--paper); border: 1px solid var(--line); padding: 18px 20px; display: grid; grid-template-columns: 35px 1fr auto; gap: 12px; align-items: start; }
.status-icon { width: 27px; height: 27px; border-radius: 50%; display: grid; place-items: center; font-size: 13px; font-weight: 800; }
.check-item.pass .status-icon { color: var(--green); background: var(--green-soft); }
.check-item.fail .status-icon { color: var(--red); background: var(--red-soft); }
.check-item.warning .status-icon { color: var(--amber); background: var(--amber-soft); }
.check-item.manual .status-icon { color: var(--blue); background: #e1eaf3; }
.check-copy strong { display: block; font: 500 15px Georgia, serif; }
.check-copy p { color: var(--muted); font-size: 12px; line-height: 1.5; margin: 6px 0 0; }
.check-evidence { grid-column: 2 / -1; font-size: 11px; color: #7c827e; padding-top: 8px; border-top: 1px dotted var(--line); display: none; }
.check-item.open .check-evidence { display: block; }
.status-label { font-size: 9px; font-weight: 800; letter-spacing: .09em; padding: 6px 8px; border-radius: 20px; text-transform: uppercase; cursor: pointer; border: 0; }
.pass .status-label { color: var(--green); background: var(--green-soft); }
.fail .status-label { color: var(--red); background: var(--red-soft); }
.warning .status-label { color: var(--amber); background: var(--amber-soft); }
.manual .status-label { color: var(--blue); background: #e1eaf3; }

.analysis-column { display: grid; gap: 16px; }
.signal-card, .ai-card, .ai-output { padding: 26px; box-shadow: none; }
.signal-card h3, .ai-card h3, .ai-output h3 { font: 400 22px Georgia, serif; margin: 9px 0 14px; }
.signal-meter { height: 6px; background: linear-gradient(90deg, var(--green-soft), var(--amber-soft), var(--red-soft)); margin: 22px 0 10px; position: relative; }
.signal-meter div { position: absolute; left: 0; top: -3px; width: 0; height: 12px; background: var(--ink); transition: width .8s ease; }
.signal-value { display: flex; align-items: baseline; justify-content: space-between; }
.signal-value strong { font: 400 34px Georgia, serif; }
.signal-value span { font-size: 11px; color: var(--muted); }
.signal-card > p, .ai-card > p, .ai-card > small { font-size: 11px; line-height: 1.6; color: var(--muted); }
.signal-card ul, .ai-output ul { margin: 14px 0 0; padding-left: 17px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.key-field { display: block; margin-top: 18px; }
.ai-card .secondary-button { width: 100%; margin: 3px 0 12px; }
.ai-output { border-left: 4px solid var(--green); }
.ai-output h4 { font-size: 12px; margin: 18px 0 4px; }
.ai-output p { color: var(--muted); line-height: 1.6; font-size: 12px; }
.report-actions { display: flex; align-items: center; gap: 10px; padding: 26px 0 80px; }
.report-actions .text-button { margin-left: auto; }

dialog { width: min(650px, calc(100% - 30px)); max-height: 82vh; border: 1px solid var(--line); background: var(--paper); padding: 28px; color: var(--ink); box-shadow: 0 25px 80px rgba(0,0,0,.25); }
dialog::backdrop { background: rgba(16, 25, 21, .55); backdrop-filter: blur(3px); }
.dialog-head { align-items: center; }
.dialog-head > div { display: flex; gap: 10px; align-items: center; }
dialog > p { color: var(--muted); font-size: 12px; }
.history-list { display: grid; gap: 9px; margin: 24px 0; }
.history-item { border: 1px solid var(--line); padding: 14px; display: flex; align-items: center; justify-content: space-between; gap: 15px; }
.history-item strong, .history-item span { display: block; }
.history-item span { color: var(--muted); font-size: 11px; margin-top: 5px; }
.history-item b { font: 400 23px Georgia, serif; color: var(--green); }
.danger { color: var(--red); }
.settings-copy { margin-top: 25px; }
.settings-copy h3 { font: 500 16px Georgia, serif; margin-bottom: 5px; }
.settings-copy p { color: var(--muted); font-size: 13px; line-height: 1.6; margin-bottom: 20px; }

footer { max-width: 1180px; margin: 0 auto; padding: 24px 0 40px; border-top: 1px solid rgba(23,33,29,.15); display: flex; justify-content: space-between; color: var(--muted); font-size: 11px; }

@media (max-width: 820px) {
  .workspace-grid, .result-layout { grid-template-columns: 1fr; }
  .hero { margin-top: 45px; }
  .guide-panel { order: -1; }
  .guide-panel .mini-checklist { grid-template-columns: 1fr 1fr; }
  .results-head { align-items: flex-start; }
}

@media (max-width: 560px) {
  main { width: min(100% - 24px, 1180px); }
  .topbar { padding: 14px 16px; }
  .brand small { display: none; }
  .nav-button { padding: 8px 6px; font-size: 11px; }
  .hero h1 { font-size: 42px; }
  .options-row, .ai-settings { grid-template-columns: 1fr; }
  .privacy-pill { display: none; }
  .score-orbit { width: 88px; height: 88px; }
  .score-orbit strong { font-size: 28px; }
  .check-item { grid-template-columns: 30px 1fr; }
  .status-label { grid-column: 2; justify-self: start; }
  .check-evidence { grid-column: 2; }
  .report-actions { flex-direction: column; align-items: stretch; }
  .report-actions .text-button { margin-left: 0; }
  footer { margin: 0 12px; }
}

@media print {
  body { background: white; }
  .topbar, .hero, .workspace-grid, .ai-card, .report-actions, footer { display: none !important; }
  main { width: 100%; }
  .results { display: block !important; margin: 0; border: 0; }
  .result-layout { grid-template-columns: 1fr; }
  .check-item, .paper { box-shadow: none; break-inside: avoid; }
}

/* 1.1.0 personal accounts — auth area always shown before access */
.auth-locked .topbar,.auth-locked main,.auth-locked footer{display:none!important}
.auth-screen{position:fixed;inset:0;z-index:1000;background:linear-gradient(140deg,#f6f8fb,#e9f0ff);display:flex;align-items:center;justify-content:center;padding:24px;overflow:auto}
.auth-card{width:min(480px,100%);max-height:96vh;overflow:auto;padding:34px;background:#fff;border-radius:24px;box-shadow:0 20px 60px rgba(24,45,80,.12);font-family:system-ui,-apple-system,"PingFang SC",sans-serif}
.auth-brand{display:flex;align-items:center;gap:12px}.auth-brand h1{font-size:30px;letter-spacing:-1px;margin:0}.auth-subtitle{color:#667085;margin:8px 0 18px}.auth-form h2{font-size:19px;margin:10px 0 18px}.auth-form label{display:block;font-size:14px;font-weight:600;margin:14px 0;color:#344054}.auth-form label input{display:block;width:100%;height:45px;padding:12px;border:1px solid #d0d5dd;border-radius:10px;margin-top:7px;color:#222}.auth-form .primary-button{width:100%;margin-top:13px;justify-content:center}.auth-links{display:flex;align-items:center;justify-content:space-between;margin-top:17px;gap:12px;flex-wrap:wrap}.auth-links button{border:0;background:transparent;color:#326dd1;cursor:pointer;font-size:13px}.auth-feedback{min-height:20px;color:#aa3333;font-size:13px}.auth-footer{font-size:11px;color:#8994a6;text-align:center;margin:26px 0 0}.recovery-code{display:block;overflow-wrap:anywhere;background:#eef3fc;padding:14px;border-radius:10px;font-size:16px;margin:20px 0}.model-fixed{display:block;margin-top:10px;padding:12px;background:#f2f5fb;border-radius:8px;font-weight:700}

/* MLA feedback link */
.feedback-link { text-decoration: none; }
.auth-footer a {
  color: #326dd1;
  text-decoration: none;
  display: inline-block;
  margin-top: 8px;
}
.auth-footer a:hover { text-decoration: underline; }