/* ============================================================================
   AM.AI — светлая продуктовая дизайн-система Технопарка РГСУ.
   Один режим оформления: нейтральная светлая база, строгая типографика и
   фирменный фиолетовый только для навигации, фокуса и ключевых действий.
   ========================================================================== */

:root {
  --bg: #f5f5f3;
  --bg-2: #ffffff;
  --bg-3: #f7f7f8;
  --bg-elevated: #ffffff;
  --border: #e3e1e5;
  --border-strong: #cbc7cf;
  --text: #19171c;
  --muted: #6c6871;
  --muted-2: #95919a;
  --accent: #ad59e8;
  --accent-rgb: 173, 89, 232;
  --accent-2: #7425a8;
  --brand-yellow: #d3cd00;
  --ok: #16784d;
  --warn: #8a6900;
  --err: #c53c56;
  --v: #16784d;
  --o: #c53c56;
  --u: #15758b;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 16px 42px rgba(34, 27, 40, .08);
  --shadow-soft: 0 1px 2px rgba(34, 27, 40, .05);
  color-scheme: light;
}

/* ---------------------------------------------------------------- база */
* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg); scroll-behavior: smooth; }
body {
  min-height: 100vh;
  max-width: 1660px;
  margin: 0 auto;
  padding: 18px clamp(16px, 2.2vw, 36px) 56px;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Avenir Next", "Segoe UI Variable", "Segoe UI", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}
::selection { color: var(--text); background: #e5c6f7; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #cbc8ce; border: 3px solid var(--bg); border-radius: 20px; }

h1 {
  margin: 0 0 8px;
  color: var(--text);
  font-size: clamp(28px, 2.25vw, 38px);
  line-height: 1.08;
  letter-spacing: -.035em;
  font-weight: 720;
}
h2 {
  margin: 28px 0 12px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.2;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
}
h3 { margin: 0 0 10px; color: var(--muted); font-size: 14px; font-weight: 650; }
p { margin: 10px 0; }
a { color: var(--accent-2); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--text); }
.muted { color: var(--muted); font-size: 13px; }
kbd {
  padding: 2px 7px;
  border: 1px solid var(--border);
  border-bottom-color: var(--border-strong);
  border-radius: 5px;
  background: var(--bg-3);
  font-size: 11px;
}
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* --------------------------------------------------------- заголовок страницы */
.page-intro {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin: 34px 0 22px;
}
.page-intro-copy { max-width: 940px; }
.page-eyebrow {
  display: block;
  margin-bottom: 7px;
  color: var(--accent-2);
  font-size: 11px;
  font-weight: 650;
}
.page-intro p { max-width: 900px; margin-bottom: 0; color: var(--muted); font-size: 14px; }
.page-node { display: none; }

/* ---------------------------------------------------------------- шапка */
.topbar {
  display: flex;
  align-items: center;
  min-height: 66px;
  gap: 8px;
  margin-bottom: 24px;
  padding: 7px 12px 7px 16px;
  position: sticky;
  top: 8px;
  z-index: 50;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 8px 28px rgba(35, 27, 42, .07);
  backdrop-filter: blur(16px);
}
.topbar .brand {
  display: flex;
  align-items: center;
  min-width: 250px;
  gap: 14px;
  margin-right: 12px;
  color: var(--text);
  text-decoration: none;
}
.brand-logo {
  width: 112px;
  height: 38px;
  object-fit: contain;
  object-position: left center;
  filter: invert(1);
}
.brand-product {
  display: flex;
  flex-direction: column;
  padding-left: 14px;
  border-left: 1px solid var(--border);
  line-height: 1.05;
}
.brand-product strong { color: var(--text); font-size: 15px; letter-spacing: .06em; }
.brand-product small {
  margin-top: 5px;
  color: var(--muted-2);
  font-size: 9px;
  font-weight: 650;
  letter-spacing: .08em;
}
.topbar nav { display: flex; align-items: center; gap: 2px; flex-wrap: wrap; }
.nav-link {
  padding: 8px 11px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: color .15s ease, background .15s ease;
}
.nav-link:hover { color: var(--text); background: var(--bg-3); }
.nav-link.active { color: var(--text); background: #f0e5f7; }
.topbar .spacer { flex: 1; }

/* ---------------------------------------------------------------- карточки */
.card {
  margin-bottom: 16px;
  padding: clamp(16px, 1.8vw, 22px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-2);
  box-shadow: var(--shadow-soft);
}
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 14px;
}
.empty {
  padding: 32px 20px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .45);
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

/* ---------------------------------------------------------------- контролы */
button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 38px;
  padding: 9px 14px;
  border: 1px solid #211e24;
  border-radius: var(--radius-sm);
  background: #211e24;
  box-shadow: none;
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 650;
  text-decoration: none;
  transition: background .15s ease, border-color .15s ease;
}
button:hover, .btn:hover { color: #fff; border-color: #3b363e; background: #3b363e; }
button:disabled, .btn[aria-disabled="true"] {
  border-color: var(--border);
  background: var(--bg-3);
  color: var(--muted-2);
  cursor: not-allowed;
}
.btn-ghost {
  border-color: var(--border-strong);
  background: #fff;
  color: var(--text);
}
.btn-ghost:hover { color: var(--text); border-color: #aaa4ae; background: var(--bg-3); }
.btn-ok { border-color: var(--ok); background: var(--ok); }
.btn-danger { border-color: var(--err); background: var(--err); }
.btn-sm { min-height: 30px; padding: 5px 10px; font-size: 12px; }
.icon-btn {
  width: 38px;
  min-height: 38px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: #fff;
  color: var(--text);
  font-size: 14px;
}

input, select, textarea {
  min-height: 40px;
  padding: 9px 11px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--text);
  font: inherit;
  font-size: 13px;
  transition: border-color .15s ease, box-shadow .15s ease;
}
input:hover, select:hover, textarea:hover { border-color: #aaa4ae; }
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), .11);
}
input[type="checkbox"], input[type="radio"] { min-height: 0; accent-color: var(--accent-2); }
input[type="range"] { accent-color: var(--accent-2); }
textarea { resize: vertical; }
label { color: var(--muted); font-size: 13px; }
label.field { display: flex; flex-direction: column; gap: 6px; }
.seg {
  display: inline-flex;
  padding: 3px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-3);
}
.seg button {
  min-height: 32px;
  padding: 6px 12px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  font-weight: 600;
}
.seg button:hover { color: var(--text); background: transparent; }
.seg button.act, .seg button[aria-pressed="true"] {
  background: #fff;
  color: var(--text);
  box-shadow: 0 1px 3px rgba(31, 26, 34, .10);
}
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

/* ---------------------------------------------------------------- статусы */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 26px;
  padding: 3px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.chip::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 6px;
  border-radius: 50%;
  background: currentColor;
}
.chip-ok { border-color: #c4e4d5; background: #f4fbf7; color: var(--ok); }
.chip-warn { border-color: #eadfae; background: #fffcf0; color: var(--warn); }
.chip-err { border-color: #efc8d0; background: #fff6f7; color: var(--err); }
.chip-off { color: var(--muted-2); }

/* ---------------------------------------------------------------- таблицы */
table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13px; }
th, td { padding: 10px 11px; border-bottom: 1px solid var(--border); text-align: left; }
th {
  color: var(--muted-2);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
}
tbody tr:last-child td { border-bottom: 0; }
tr.clickable { cursor: pointer; }
tr.clickable:hover, tr.clickable:focus-visible { background: #faf8fb; }

/* ---------------------------------------------------------------- графики */
.bar { height: 7px; overflow: hidden; border-radius: 99px; background: #e9e7eb; }
.bar-fill { height: 100%; border-radius: 99px; background: var(--accent); }

/* ---------------------------------------------------------------- модалки */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(29, 24, 32, .32);
  backdrop-filter: blur(5px);
}
.modal-backdrop[hidden] { display: none; }
.modal {
  width: 100%;
  max-width: 640px;
  max-height: 88vh;
  overflow: auto;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
  box-shadow: var(--shadow);
}
.modal-wide { max-width: 900px; }
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.modal-head h3 { margin: 0; color: var(--text); font-size: 18px; }

/* ---------------------------------------------------------------- тосты */
.toast-wrap {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 200;
  display: flex;
  max-width: 360px;
  flex-direction: column;
  gap: 8px;
}
.toast {
  padding: 12px 15px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow);
  color: var(--text);
  font-size: 13px;
}
.toast-ok { border-left-color: var(--ok); }
.toast-err { border-left-color: var(--err); }
.toast-warn { border-left-color: var(--warn); }

/* ---------------------------------------------------------------- спиннер */
.spinner {
  width: 15px;
  height: 15px;
  display: inline-block;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: amai-spin .7s linear infinite;
}
@keyframes amai-spin { to { transform: rotate(360deg); } }

/* ---------------------------------------------------------------- адаптив */
@media (max-width: 1120px) {
  .topbar .brand { min-width: 210px; }
  .brand-logo { width: 96px; }
  .brand-product small { display: none; }
  .nav-link { padding-inline: 9px; }
}
@media (max-width: 800px) {
  body { padding: 10px 10px 40px; }
  .topbar { position: static; align-items: flex-start; padding: 11px; }
  .topbar .brand { min-width: auto; margin-right: 0; }
  .brand-product { display: none; }
  .topbar nav { order: 3; width: 100%; overflow-x: auto; flex-wrap: nowrap; }
  .nav-link { flex: 0 0 auto; }
  .card { padding: 16px; }
  .grid-cards { grid-template-columns: 1fr; }
  .page-intro { margin-top: 22px; }
  .toolbar { align-items: stretch; }
  .toolbar > label { display: flex; flex-direction: column; gap: 4px; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}