/* Mycel — trang giới thiệu và các trang thông tin (quyền riêng tư, điều khoản, xoá dữ liệu, xác nhận kết nối).
   Cùng chất liệu với trang quản lý: giấy ô ly, mực tím, con dấu tròn. */

:root {
  --paper: #f5f5fa;
  --rule: rgb(75 55 184 / 0.08);
  --surface: #ffffff;
  --surface-2: #f1f0f8;
  --line: #e3e1ef;
  --line-strong: #c9c5dd;
  --ink: #221e33;
  --ink-2: #67637d;
  --violet: #4b37b8;
  --violet-soft: #eeebfc;
  --red: #cc2d29;
  --red-soft: #fcecea;
  --on-accent: #ffffff;
  --shadow: 0 1px 2px rgb(34 30 51 / 0.05), 0 18px 40px -20px rgb(34 30 51 / 0.28);

  --display: "Bricolage Grotesque", "Be Vietnam Pro", system-ui, sans-serif;
  --body: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --radius: 10px;
  --radius-lg: 18px;
  --max: 1120px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #14121c;
    --rule: rgb(168 152 255 / 0.05);
    --surface: #1c1a27;
    --surface-2: #25222f;
    --line: #322e42;
    --line-strong: #4a4560;
    --ink: #ecebf5;
    --ink-2: #a3a0b9;
    --violet: #a898ff;
    --violet-soft: #2a2550;
    --red: #ff7d71;
    --red-soft: #3a1f22;
    --on-accent: #14121c;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 18px 40px -20px rgb(0 0 0 / 0.7);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  color: var(--ink);
  font: 400 16px/1.6 var(--body);
  background-color: var(--paper);
  background-image:
    linear-gradient(90deg, var(--rule) 1px, transparent 1px),
    linear-gradient(var(--rule) 1px, transparent 1px);
  background-size: 32px 32px;
}
h1, h2, h3 { margin: 0; font-family: var(--display); font-weight: 700; letter-spacing: -0.02em; line-height: 1.12; }
p { margin: 0; }
a { color: var(--violet); }
code { font-family: var(--mono); font-size: 0.88em; }
:focus-visible { outline: 2px solid var(--violet); outline-offset: 3px; border-radius: 4px; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- thanh trên ---------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid transparent;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.site-nav.scrolled { border-bottom-color: var(--line); }
.site-nav .wrap { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font: 700 19px/1 var(--display);
  letter-spacing: -0.02em;
  text-decoration: none;
}
.brand-seal {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 2px solid var(--violet);
  border-radius: 50%;
  outline: 1px solid var(--violet);
  outline-offset: -5px;
  color: var(--violet);
  font: 800 14px/1 var(--display);
  transform: rotate(-10deg);
}
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { color: var(--ink-2); font-size: 15px; font-weight: 500; text-decoration: none; }
.nav-links a:hover { color: var(--ink); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font: 600 15px/1 var(--body);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease, background 0.15s ease;
}
.btn:hover { background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn.primary { border-color: var(--violet); background: var(--violet); color: var(--on-accent); }
.btn.primary:hover { filter: brightness(1.1); }
.btn.lg { min-height: 52px; padding: 0 26px; font-size: 16px; }
.btn.danger { border-color: var(--red); color: var(--red); }
.btn.danger:hover { background: var(--red-soft); }
.btn:disabled { opacity: 0.5; cursor: default; }
.fb-glyph {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--on-accent);
  color: var(--violet);
  font: 800 14px/1 var(--display);
}

.banner {
  margin: 16px auto 0;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--violet);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 15px;
}
.banner.error { border-left-color: var(--red); }

/* ---------- mở đầu ---------- */

.hero { padding: 72px 0 40px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-2);
  font-size: 13.5px;
  font-weight: 500;
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--violet); }
.hero h1 { font-size: clamp(38px, 5.4vw, 64px); font-weight: 800; letter-spacing: -0.035em; }
.hero h1 em { font-style: normal; color: var(--violet); }
.hero .lede { max-width: 34em; margin-top: 22px; color: var(--ink-2); font-size: 18px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-note { margin-top: 18px; color: var(--ink-2); font-size: 14px; }

/* Ảnh minh hoạ giao diện, dựng bằng HTML/CSS. */
.preview {
  position: relative;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.preview-bar { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.preview-bar span { width: 9px; height: 9px; border-radius: 50%; background: var(--line-strong); }
.preview-bar strong { margin-left: 8px; font: 600 13px/1 var(--body); color: var(--ink-2); }
.pv-tiles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.pv-tile { padding: 12px; border: 1px solid var(--line); border-radius: var(--radius); }
.pv-tile small { display: block; color: var(--ink-2); font-size: 11.5px; }
.pv-tile b { display: block; margin-top: 4px; font: 700 21px/1.1 var(--display); letter-spacing: -0.02em; }
.pv-tile i { color: var(--violet); font-size: 11.5px; font-style: normal; font-weight: 600; }
.pv-chart { margin-top: 14px; padding: 12px 12px 6px; border: 1px solid var(--line); border-radius: var(--radius); }
.pv-chart small, .pv-rank small { color: var(--ink-2); font-size: 11.5px; }
.pv-chart svg { display: block; width: 100%; height: auto; margin-top: 8px; }
.pv-chart .bar { fill: var(--violet); }
.pv-chart .bar.dim { opacity: 0.35; }
.pv-chart .grid { stroke: var(--line); stroke-width: 1; }
.pv-rank { margin-top: 14px; padding: 12px; border: 1px solid var(--line); border-radius: var(--radius); }
.pv-row { display: grid; grid-template-columns: 22px 92px minmax(0, 1fr) 48px; gap: 10px; align-items: center; margin-top: 9px; font-size: 12.5px; }
.pv-row .dot { width: 22px; height: 22px; border-radius: 50%; background: var(--violet-soft); }
.pv-row .track { height: 8px; border-radius: 4px; background: var(--surface-2); overflow: hidden; }
.pv-row .fill { display: block; height: 100%; border-radius: 4px; background: var(--violet); }
.pv-row .val { text-align: right; font-family: var(--mono); font-size: 11.5px; color: var(--ink-2); }
.pv-row.you .name { font-weight: 700; }
.stamp {
  position: absolute;
  left: -30px;
  bottom: -26px;
  display: grid;
  place-items: center;
  width: 92px;
  height: 92px;
  border: 3px solid var(--violet);
  border-radius: 50%;
  outline: 1.5px solid var(--violet);
  outline-offset: -9px;
  background: var(--surface);
  color: var(--violet);
  font: 800 12px/1.15 var(--display);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transform: rotate(-12deg);
}

/* ---------- các khối nội dung ---------- */

section.block { padding: 80px 0; }
.block-head { max-width: 640px; margin-bottom: 40px; }
.kicker { margin-bottom: 12px; color: var(--violet); font: 600 13px/1 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; }
.block-head h2 { font-size: clamp(30px, 3.6vw, 42px); }
.block-head p { margin-top: 14px; color: var(--ink-2); font-size: 17px; }

.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.feature {
  display: flex;
  flex-direction: column;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}
.feature-no { color: var(--violet); font: 700 14px/1 var(--mono); }
.feature h3 { margin-top: 18px; font-size: 24px; }
.feature > p { margin-top: 10px; color: var(--ink-2); }
.feature ul { margin: 18px 0 0; padding: 0; list-style: none; }
.feature li { position: relative; padding: 7px 0 7px 22px; border-top: 1px dashed var(--line); font-size: 15px; }
.feature li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 15px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--violet);
  border-radius: 50%;
}
.feature.lead { border-color: var(--violet); box-shadow: inset 0 0 0 1px var(--violet); }

.metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--line); }
.metric { padding: 22px; background: var(--surface); }
.metric b { display: block; font: 700 17px/1.25 var(--display); }
.metric span { display: block; margin-top: 6px; color: var(--ink-2); font-size: 14px; }

.steps { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; counter-reset: step; }
.step { position: relative; padding: 28px 24px 24px; border-top: 3px solid var(--violet); background: var(--surface); border-radius: 0 0 var(--radius-lg) var(--radius-lg); }
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  margin-bottom: 14px;
  color: var(--violet);
  font: 800 34px/1 var(--display);
}
.step h3 { font-size: 20px; }
.step p { margin-top: 8px; color: var(--ink-2); font-size: 15px; }

.promises { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.promise h3 { display: flex; align-items: center; gap: 12px; font-size: 20px; }
.promise h3::before {
  content: "✓";
  display: grid;
  place-items: center;
  flex: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--violet-soft);
  color: var(--violet);
  font: 800 15px/1 var(--body);
}
.promise p { margin-top: 10px; color: var(--ink-2); font-size: 15px; }

.faq { max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  font: 600 17px/1.4 var(--body);
  list-style: none;
  cursor: pointer;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex: none; color: var(--violet); font: 500 24px/1 var(--body); transition: transform 0.2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 0 20px; color: var(--ink-2); }

.final {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 44px;
  border-radius: var(--radius-lg);
  background: var(--violet);
  color: var(--on-accent);
}
.final h2 { font-size: clamp(26px, 3vw, 36px); }
.final p { margin-top: 8px; opacity: 0.85; }
.final .btn { border-color: var(--on-accent); background: var(--on-accent); color: var(--violet); }

/* ---------- chân trang ---------- */

.site-foot { margin-top: 40px; padding: 32px 0 48px; border-top: 1px solid var(--line); background: var(--surface); }
.site-foot .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; }
.site-foot nav { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-left: auto; }
.site-foot a { color: var(--ink-2); font-size: 14px; text-decoration: none; }
.site-foot a:hover { color: var(--ink); }
.site-foot small { color: var(--ink-2); font-size: 13.5px; }

/* ---------- trang văn bản ---------- */

.doc { max-width: 760px; padding: 56px 24px 40px; }
.doc-card { padding: 44px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
.doc h1 { font-size: clamp(30px, 4vw, 40px); }
.doc .updated { margin-top: 10px; color: var(--ink-2); font-size: 14px; }
.doc h2 { margin-top: 36px; font-size: 22px; }
.doc p, .doc li { color: var(--ink); }
.doc p { margin-top: 12px; }
.doc ul, .doc ol { margin: 12px 0 0; padding-left: 22px; }
.doc li { margin-top: 6px; }
.doc .note { margin-top: 24px; padding: 14px 16px; border-radius: var(--radius); background: var(--violet-soft); }

.confirm { max-width: 520px; padding: 72px 24px; }
.confirm .doc-card { text-align: center; }
.confirm h1 { font-size: 28px; }
.confirm p { margin-top: 12px; color: var(--ink-2); }
.confirm .who { display: flex; align-items: center; justify-content: center; gap: 12px; margin: 24px 0 4px; font-weight: 700; font-size: 18px; }
.confirm .who img { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; }
.confirm .cta-row { justify-content: center; }

/* ---------- màn hình hẹp ---------- */

@media (max-width: 960px) {
  .hero .wrap { grid-template-columns: minmax(0, 1fr); gap: 48px; }
  .features, .steps, .promises { grid-template-columns: minmax(0, 1fr); }
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .wrap { padding: 0 16px; }
  .nav-links { display: none; }
  .site-nav .wrap { gap: 12px; justify-content: space-between; }
  .site-nav .btn { min-height: 40px; padding: 0 16px; font-size: 14px; }
  .hero { padding: 40px 0 24px; }
  .hero .lede { font-size: 16.5px; }
  .cta-row .btn { flex: 1 1 100%; }
  section.block { padding: 56px 0; }
  .feature, .doc-card { padding: 22px; }
  .metrics { grid-template-columns: minmax(0, 1fr); }
  .final { flex-direction: column; align-items: stretch; padding: 28px 22px; }
  .site-foot nav { margin-left: 0; }
  .stamp { width: 72px; height: 72px; font-size: 10px; left: auto; right: 6px; bottom: auto; top: -34px; }
  .pv-row { grid-template-columns: 22px 96px minmax(0, 1fr) 44px; white-space: nowrap; }
  .doc { padding: 32px 16px; }
}

/* ---------- trang cho phép agent (OAuth) ---------- */

.consent { text-align: left !important; }
.consent h1 { font-size: 26px; }
.consent-host { padding: 10px 12px; border-radius: var(--radius); background: var(--surface-2); font-size: 14px; }
.consent-scopes { margin: 20px 0 0; padding: 0; list-style: none; }
.consent-scopes li { padding: 10px 0; border-top: 1px solid var(--line); }
.consent-scopes label { display: flex; gap: 10px; align-items: flex-start; }
.consent-scopes input { margin-top: 5px; accent-color: var(--violet); }
.consent .cta-row { justify-content: flex-start !important; }
.consent-foot { margin-top: 18px; font-size: 13px; }

/* ---------- AI agent (MCP) ---------- */

.mcp-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 32px; align-items: start; }
.mcp-steps { margin: 0; padding: 0; list-style: none; counter-reset: mcp; }
.mcp-steps li { position: relative; padding: 0 0 22px 48px; }
.mcp-steps li::before {
  counter-increment: mcp;
  content: counter(mcp);
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 2px solid var(--violet);
  border-radius: 50%;
  color: var(--violet);
  font: 800 14px/1 var(--display);
}
.mcp-steps b { display: block; font: 700 18px/1.3 var(--display); }
.mcp-steps span { display: block; margin-top: 4px; color: var(--ink-2); font-size: 15px; }
.mcp-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: #1d1934;
  color: #ecebf5;
  box-shadow: var(--shadow);
}
.mcp-card small { margin-top: 6px; color: #a3a0b9; font: 600 11.5px/1 var(--mono); letter-spacing: 0.05em; text-transform: uppercase; }
.mcp-card small:first-child { margin-top: 0; }
.mcp-card code { overflow-x: auto; padding: 10px 12px; border-radius: 8px; background: rgb(255 255 255 / 0.07); color: #fff; font-size: 13px; white-space: nowrap; }
.mcp-card p { color: #c9c5dd; font: 12.5px/1.7 var(--mono); }
@media (max-width: 960px) {
  .mcp-grid { grid-template-columns: minmax(0, 1fr); }
}