:root {
  --bg: #ffffff;
  --bg-soft: #f7f7f8;
  --line: #e8e8ec;
  --line-strong: #dcdce2;
  --ink: #0b0b0f;
  --ink-soft: #3f3f46;
  --muted: #71717a;
  --accent: #6d4aff;
  --accent-soft: #f3f0ff;
  --warn: #b45309;
  --warn-soft: #fff7ed;
  --ok: #047857;
  --ok-soft: #ecfdf5;
  --radius: 18px;
  --shadow: 0 1px 2px rgba(11, 11, 15, .04), 0 8px 24px rgba(11, 11, 15, .05);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 28px; }

/* верхняя навигация */
.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -.01em; }
.mark {
  width: 26px; height: 26px; border-radius: 8px;
  background: linear-gradient(135deg, #6d4aff, #b45cff 60%, #ff7ad9);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .35);
}
.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-links a {
  padding: 8px 14px; border-radius: 999px; color: var(--muted); font-size: 14.5px;
}
.nav-links a:hover { background: var(--bg-soft); color: var(--ink); }
.nav-links a.active { background: var(--bg-soft); color: var(--ink); font-weight: 500; }
.nav-right { display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--muted); }
.who { max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* типографика */
.eyebrow {
  text-transform: uppercase; font-size: 11.5px; letter-spacing: .1em;
  color: var(--muted); font-weight: 600; margin-bottom: 14px;
}
h1 { font-size: clamp(30px, 4vw, 44px); line-height: 1.1; letter-spacing: -.03em; margin: 0 0 14px; }
h2 { font-size: 22px; letter-spacing: -.02em; margin: 0 0 12px; }
h3 { font-size: 17px; letter-spacing: -.01em; margin: 0 0 6px; }
.lead { color: var(--muted); font-size: 17px; max-width: 720px; margin: 0 0 28px; }
.mono { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }

/* карточки */
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
.card + .card { margin-top: 18px; }
.card-flat { box-shadow: none; }
.hero { padding: 52px 0 8px; }
.grid { display: grid; gap: 14px; }
.grid-modes { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid-tiles { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }

/* кнопки */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  border: 1px solid transparent; border-radius: 999px; padding: 12px 20px;
  font: inherit; font-size: 15px; font-weight: 500; cursor: pointer;
  background: var(--ink); color: #fff; transition: transform .06s ease, opacity .15s ease;
}
.btn:hover { opacity: .9; }
.btn:active { transform: translateY(1px); }
.btn.secondary { background: #fff; color: var(--ink); border-color: var(--line-strong); }
.btn.secondary:hover { background: var(--bg-soft); opacity: 1; }
.btn.small { padding: 8px 14px; font-size: 14px; }
.btn:disabled { opacity: .5; cursor: default; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

/* поля ввода */
textarea, input[type="text"], input[type="password"] {
  width: 100%; font: inherit; color: var(--ink); background: #fff;
  border: 1px solid var(--line-strong); border-radius: 14px; padding: 14px 16px;
  resize: vertical; outline: none;
}
textarea:focus, input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
textarea { min-height: 170px; line-height: 1.5; }
label { display: block; font-size: 13.5px; color: var(--muted); margin-bottom: 8px; }

/* карточка режима */
.mode {
  display: flex; flex-direction: column; gap: 6px; text-align: left;
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  padding: 18px; cursor: pointer; font: inherit; transition: border-color .15s, box-shadow .15s;
}
.mode:hover { border-color: var(--accent); box-shadow: 0 8px 24px rgba(109, 74, 255, .1); }
.mode .name { font-weight: 600; letter-spacing: -.01em; }
.mode .hint { color: var(--muted); font-size: 14px; }
.mode .limits { color: var(--muted); font-size: 12.5px; margin-top: 4px; }
form.inline { display: contents; }

/* чипы и метки */
.pill {
  display: inline-flex; align-items: center; gap: 6px; border-radius: 999px;
  padding: 4px 11px; font-size: 12.5px; background: var(--bg-soft); color: var(--ink-soft);
  border: 1px solid var(--line);
}
.pill.warn { background: var(--warn-soft); border-color: #fed7aa; color: var(--warn); }
.pill.ok { background: var(--ok-soft); border-color: #bbf7d0; color: var(--ok); }
.pill.accent { background: var(--accent-soft); border-color: #ddd4ff; color: #4c1d95; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 18px; }

/* результат */
.result-text {
  white-space: pre-wrap; word-wrap: break-word; font-size: 16.5px; line-height: 1.65;
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 14px;
  padding: 22px 24px; margin: 0;
}
.meta { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 16px; }
.meta .k { font-size: 12.5px; color: var(--muted); }
.meta .v { font-size: 19px; font-weight: 600; letter-spacing: -.02em; }
.tile { border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; background: #fff; }
.tile .v { font-size: 24px; font-weight: 650; letter-spacing: -.03em; }

/* таблица истории */
table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
th { text-align: left; color: var(--muted); font-weight: 500; font-size: 12.5px; text-transform: uppercase; letter-spacing: .06em; padding: 10px 12px; border-bottom: 1px solid var(--line); }
td { padding: 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
tr:hover td { background: var(--bg-soft); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

.notice { border-radius: 14px; padding: 14px 18px; font-size: 15px; margin: 0 0 18px; }
.notice.error { background: var(--warn-soft); border: 1px solid #fed7aa; color: var(--warn); }
.notice.info { background: var(--accent-soft); border: 1px solid #ddd4ff; color: #4c1d95; }

.foot { color: var(--muted); font-size: 13px; padding: 40px 28px 56px; }
.muted { color: var(--muted); }
.stack { display: flex; flex-direction: column; gap: 14px; }
.row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.between { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.login-card { max-width: 380px; margin: 12vh auto 0; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.chips a { border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; font-size: 14px; color: var(--ink-soft); }
.chips a.active { background: var(--ink); color: #fff; border-color: var(--ink); }