:root {
  --bg: #0b1020;
  --bg2: #0d1430;
  --panel: #121a33;
  --panel2: #16203d;
  --ink: #eaf0ff;
  --muted: #9fb0d6;
  --brand: #5b8cff;
  --brand2: #33e0c0;
  --line: #22305c;
  --radius: 14px;
}
* { box-sizing: border-box; }
/* An explicit `display` on a rule beats the [hidden] attribute's UA default,
   so enforce it here — several toggled elements below use display:flex/grid. */
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: linear-gradient(180deg, var(--bg), var(--bg2));
  color: var(--ink);
  line-height: 1.6;
}
.wrap { max-width: 1060px; margin: 0 auto; padding: 0 20px; }
a { color: var(--brand); }

header {
  padding: 20px 0; display: flex; justify-content: space-between;
  align-items: center; gap: 16px; flex-wrap: wrap;
}
.logo { font-weight: 800; font-size: 20px; letter-spacing: .3px; }
.logo span { color: var(--brand2); }
nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
nav a:hover { color: var(--ink); }
select#lang {
  background: var(--panel); color: var(--ink); border: 1px solid var(--line);
  border-radius: 8px; padding: 5px 8px; font-size: 14px;
}

.hero { padding: 60px 0 30px; text-align: center; }
.hero h1 { font-size: 44px; line-height: 1.15; margin: 0 0 16px; }
.hero p { font-size: 19px; color: var(--muted); max-width: 700px; margin: 0 auto 26px; }

.btn {
  display: inline-block; background: var(--brand); color: #fff; padding: 13px 24px;
  border-radius: 10px; text-decoration: none; font-weight: 600; border: none;
  cursor: pointer; font-size: 15px; font-family: inherit;
}
.btn:hover { filter: brightness(1.1); }
.btn.ghost { background: transparent; border: 1px solid var(--line); color: var(--ink); }
.btn.small { padding: 8px 16px; font-size: 14px; }

.flow {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; margin: 26px 0; font-family: ui-monospace, Menlo, monospace;
  color: var(--brand2); font-size: 14px; overflow-x: auto; text-align: center;
}

h2.section { font-size: 30px; margin: 64px 0 8px; text-align: center; }
p.section-sub { color: var(--muted); text-align: center; margin: 0 0 26px; }

/* ---- chat ---- */
#chat { margin: 30px 0 10px; }
.chat-box {
  display: grid; grid-template-columns: 220px 1fr; gap: 0;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; min-height: 460px;
}
.chat-side { border-right: 1px solid var(--line); padding: 14px; background: var(--panel2); }
.chat-side h4 { margin: 0 0 10px; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
#chat-sessions { list-style: none; margin: 0 0 12px; padding: 0; max-height: 300px; overflow-y: auto; }
.sess { display: flex; align-items: center; gap: 4px; margin-bottom: 4px; }
.sess-label {
  flex: 1; text-align: left; background: transparent; border: none; color: var(--muted);
  font: inherit; font-size: 14px; padding: 7px 9px; border-radius: 8px; cursor: pointer;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sess.active .sess-label { background: var(--brand); color: #fff; }
.sess-label:hover { color: var(--ink); }
.sess-del {
  background: transparent; border: none; color: var(--muted); cursor: pointer;
  font-size: 17px; line-height: 1; padding: 3px 6px; border-radius: 6px;
}
.sess-del:hover { color: #ff6b6b; }
.chat-main { display: flex; flex-direction: column; }
#chat-messages { flex: 1; padding: 18px; overflow-y: auto; max-height: 420px; }
.msg { max-width: 80%; padding: 11px 15px; border-radius: 14px; margin-bottom: 12px; font-size: 15px; }
.msg.user { background: var(--brand); color: #fff; margin-left: auto; border-bottom-right-radius: 4px; }
.msg.assistant { background: var(--panel2); border: 1px solid var(--line); border-bottom-left-radius: 4px; }
#chat-status { padding: 14px 18px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); }
#chat-status .bar { height: 5px; background: var(--line); border-radius: 99px; margin-top: 8px; overflow: hidden; }
#chat-status .bar i { display: block; height: 100%; background: var(--brand2); transition: width .3s; }
#chat-form { display: flex; gap: 10px; padding: 14px; border-top: 1px solid var(--line); }
#chat-input {
  flex: 1; background: var(--bg); border: 1px solid var(--line); color: var(--ink);
  border-radius: 10px; padding: 12px 14px; font: inherit; font-size: 15px;
}
#chat-input:focus { outline: 2px solid var(--brand); outline-offset: -1px; }
.chat-foot { padding: 12px 18px; text-align: center; }
.notice {
  background: var(--panel2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; text-align: center;
}
.notice h3 { margin: 0 0 8px; }
.notice p { color: var(--muted); margin: 0 0 14px; }
.hint { color: var(--muted); font-size: 13px; text-align: center; margin-top: 10px; }
.diag {
  text-align: left; background: var(--bg); border: 1px solid var(--line);
  border-radius: 10px; padding: 14px 18px; margin: 14px 0; font-size: 14px; color: var(--muted);
}
.diag ul { margin: 8px 0; padding-left: 20px; }
.diag code { background: var(--panel2); padding: 1px 6px; border-radius: 5px; font-size: 13px; }

/* ---- providers ---- */
.providers {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 0 0 6px;
}
.prov {
  background: var(--panel); border: 1px solid var(--line); border-radius: 999px;
  padding: 8px 16px; font-size: 14px; color: var(--muted); white-space: nowrap;
}
.gdpr-box {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 26px; margin: 30px 0 0;
}
.gdpr-box h3 { margin: 0 0 10px; font-size: 19px; }
.gdpr-box p { color: var(--muted); margin: 0 0 12px; font-size: 15px; }
.gdpr-box ul { margin: 0 0 12px; padding-left: 20px; }
.gdpr-box li { color: var(--muted); margin-bottom: 8px; font-size: 15px; }
.gdpr-box li strong { color: var(--ink); }
.gdpr-box .hint { text-align: left; margin-top: 0; }

/* ---- features ---- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 26px 0; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

/* ---- pricing ---- */
.pricing { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 16px; margin: 24px 0 10px; }
.price { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; text-align: center; }
.price h3 { margin: 0 0 6px; font-size: 16px; }
.price .amt { font-size: 30px; font-weight: 800; margin: 6px 0; }
.price .amt small { font-size: 13px; color: var(--muted); font-weight: 500; }
.price .yr { color: var(--muted); font-size: 14px; }
.price .emp { color: var(--brand2); font-size: 13px; margin-top: 8px; }

footer {
  border-top: 1px solid var(--line); margin-top: 70px; padding: 28px 0;
  color: var(--muted); font-size: 14px; display: flex;
  justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
footer a { color: var(--muted); text-decoration: none; margin-right: 16px; }
footer a:hover { color: var(--ink); }

/* ---- cookie banner ---- */
#cookie-banner {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 999;
  background: var(--panel); border-top: 1px solid var(--line);
  box-shadow: 0 -8px 30px rgba(0,0,0,.4); padding: 18px 20px;
}
.cb-inner { max-width: 1060px; margin: 0 auto; display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.cb-text { flex: 1; min-width: 260px; }
.cb-text p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.cb-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.cb-opts { width: 100%; display: grid; gap: 10px; border-top: 1px solid var(--line); padding-top: 14px; }
.cb-opt { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; }
.cb-opt small { color: var(--muted); }

/* ---- legal pages ---- */
.legal { max-width: 800px; margin: 0 auto; padding: 20px 20px 60px; }
.legal h1 { font-size: 32px; }
.legal h2 { font-size: 20px; margin-top: 34px; border-bottom: 1px solid var(--line); padding-bottom: 6px; }
.legal p, .legal li { color: var(--muted); }
.legal table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 14px; }
.legal th, .legal td { border: 1px solid var(--line); padding: 9px 11px; text-align: left; }
.legal th { background: var(--panel); color: var(--ink); }

@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr; }
  .chat-box { grid-template-columns: 1fr; }
  .chat-side { border-right: none; border-bottom: 1px solid var(--line); }
  #chat-sessions { display: flex; gap: 6px; overflow-x: auto; max-height: none; }
  .sess { flex: 0 0 auto; }
  .hero h1 { font-size: 33px; }
}