:root {
  --bg:#f8f6fb;
  --panel:#fff;
  --ink:#281b35;
  --muted:#746b7e;
  --brand:#7c3cbf;
  --brand-dark:#3b2259;
  --brand-soft:#f0e7f8;
  --brand-pale:#faf7fd;
  --line:#e7dfee;
  --ok:#14744d;
  --warn:#9a5b00;
  --bad:#b4233a;
  --shadow:0 10px 30px rgba(59,34,89,.07);
}
* { box-sizing:border-box; }
html { min-height:100%; }
body {
  min-height:100vh;
  margin:0;
  color:var(--ink);
  background:radial-gradient(circle at 95% 0,rgba(124,60,191,.08),transparent 28rem),var(--bg);
  font-family:Inter,"Segoe UI",ui-sans-serif,system-ui,-apple-system,sans-serif;
}
nav {
  position:fixed;
  inset:0 auto 0 0;
  z-index:10;
  display:flex;
  width:250px;
  flex-direction:column;
  padding:24px 18px 18px;
  overflow-y:auto;
  background:rgba(255,255,255,.97);
  border-right:1px solid var(--line);
  box-shadow:8px 0 30px rgba(59,34,89,.04);
}
.brand {
  display:flex;
  min-height:112px;
  margin:0 4px 24px;
  padding:12px 10px 18px;
  flex-direction:column;
  align-items:flex-start;
  justify-content:center;
  gap:8px;
  border-bottom:1px solid var(--line);
  color:var(--brand-dark);
  text-decoration:none;
}
.brand img { display:block; width:130px; height:auto; }
.brand span { color:var(--muted); font-size:12px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; }
.nav-links { display:grid; gap:6px; }
nav .nav-links a,nav .nav-logout button {
  display:block;
  width:100%;
  margin:0;
  padding:11px 13px;
  border:0;
  border-radius:10px;
  color:#55495f;
  background:none;
  text-align:left;
  text-decoration:none;
  font:inherit;
  font-weight:600;
  cursor:pointer;
  transition:background .15s ease,color .15s ease,transform .15s ease;
}
nav .nav-links a:hover,nav .nav-links a.active { color:var(--brand-dark); background:var(--brand-soft); }
nav .nav-links a.active { box-shadow:inset 3px 0 0 var(--brand); }
nav .nav-links a:hover { transform:translateX(2px); }
.nav-logout { margin-top:auto; padding-top:22px; }
nav .nav-logout button { color:var(--muted); }
nav .nav-logout button:hover { color:var(--bad); background:#fff0f2; }
main { max-width:1500px; margin-left:250px; padding:34px; }
h1,h2,h3 { color:var(--brand-dark); letter-spacing:-.02em; }
h2 { margin:0 0 20px; font-size:28px; }
h3 { margin-top:0; }
a { color:var(--brand); }
a:hover { color:var(--brand-dark); }
.grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:16px; }
.card {
  padding:20px;
  overflow:auto;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow);
}
.grid>.card { position:relative; overflow:hidden; }
.grid>.card::before { position:absolute; inset:0 0 auto; height:4px; content:""; background:linear-gradient(90deg,var(--brand-dark),var(--brand)); }
.stat { color:var(--brand-dark); font-size:32px; font-weight:800; }
.muted { color:var(--muted); }
.row { display:flex; gap:12px; align-items:center; flex-wrap:wrap; }
form.stack { display:grid; gap:16px; }
label { display:grid; gap:7px; color:var(--brand-dark); font-size:14px; font-weight:700; }
input,select,textarea {
  width:100%;
  padding:10px 12px;
  border:1px solid #cec3d8;
  border-radius:9px;
  outline:none;
  color:var(--ink);
  background:#fff;
  font:inherit;
  transition:border-color .15s ease,box-shadow .15s ease;
}
input:focus,select:focus,textarea:focus { border-color:var(--brand); box-shadow:0 0 0 3px rgba(124,60,191,.14); }
textarea { min-height:130px; resize:vertical; }
button,.button {
  display:inline-block;
  padding:9px 14px;
  border:0;
  border-radius:9px;
  color:#fff;
  background:linear-gradient(135deg,var(--brand),#9255cf);
  box-shadow:0 4px 12px rgba(124,60,191,.2);
  text-decoration:none;
  font:inherit;
  font-weight:700;
  cursor:pointer;
  transition:filter .15s ease,transform .15s ease;
}
button:hover,.button:hover { color:#fff; filter:brightness(.94); transform:translateY(-1px); }
button:disabled { opacity:.45; box-shadow:none; cursor:not-allowed; transform:none; }
button.secondary,.button.secondary { color:var(--brand-dark); background:var(--brand-soft); box-shadow:none; }
button.danger { background:var(--bad); box-shadow:0 4px 12px rgba(180,35,58,.18); }
table { width:100%; border-collapse:collapse; background:#fff; }
th,td { padding:12px 10px; border-bottom:1px solid var(--line); text-align:left; vertical-align:top; }
th { color:#675b72; background:var(--brand-pale); font-size:12px; letter-spacing:.035em; text-transform:uppercase; }
tbody tr:hover td { background:#fcfaff; }
.badge { display:inline-block; padding:4px 9px; border-radius:999px; color:#55495f; background:#eee9f2; font-size:12px; font-weight:650; }
.badge.ok { color:var(--ok); background:#e6f5ee; }
.badge.warn { color:var(--warn); background:#fff2dc; }
.badge.bad { color:var(--bad); background:#feecef; }
.actions { display:flex; gap:7px; flex-wrap:wrap; }
.actions form { margin:0; }
.actions button { padding:7px 10px; font-size:12px; }
.notice { padding:11px 14px; border-radius:9px; font-weight:650; }
.notice.success { color:var(--ok); background:#e6f5ee; border:1px solid #b8dfcc; }
.notice.rejected { color:var(--bad); background:#feecef; border:1px solid #f1bdc6; }
.error { color:var(--bad); }
.page-heading { display:flex; justify-content:space-between; align-items:flex-start; gap:16px; }
.page-heading h2 { margin-bottom:4px; }
.page-heading p { margin:0 0 20px; }
.context-notice { display:flex; gap:6px; align-items:center; flex-wrap:wrap; margin-bottom:16px; color:var(--brand-dark); background:var(--brand-soft); border:1px solid #d9c3eb; }
.context-notice a { margin-left:auto; font-weight:700; }
.catalog-filters { overflow:visible; }
.view-switch { display:flex; gap:8px; margin:-4px 0 20px; padding-bottom:16px; border-bottom:1px solid var(--line); }
button.view-tab {
  display:flex;
  gap:9px;
  align-items:center;
  padding:9px 14px;
  color:var(--muted);
  background:#f2eef5;
  box-shadow:none;
}
button.view-tab span { min-width:26px; padding:2px 7px; border-radius:999px; color:var(--brand-dark); background:#fff; font-size:12px; }
button.view-tab.active { color:#fff; background:var(--brand-dark); }
button.view-tab.active span { color:var(--brand-dark); }
.filter-grid { display:grid; grid-template-columns:repeat(4,minmax(150px,1fr)); gap:14px; align-items:end; }
.filter-wide { grid-column:span 2; }
.filter-actions { display:flex; gap:10px; align-items:center; margin-top:18px; }
.result-summary { display:flex; gap:10px; align-items:center; flex-wrap:wrap; margin:18px 2px 10px; color:var(--muted); }
.result-summary strong { color:var(--brand-dark); }
.catalog-results { padding:0; }
.catalog-results table { min-width:980px; }
.session-preview-cell { min-width:245px; }
.session-preview { display:grid; grid-template-columns:auto 1fr; gap:3px 8px; padding:6px 0; border-bottom:1px solid #f1ebf5; font-size:12px; }
.session-preview strong { color:var(--brand-dark); }
.session-preview span { color:var(--muted); }
.session-link { display:inline-block; margin-top:8px; font-size:12px; font-weight:750; }
.session-date { white-space:nowrap; }
.login-page {
  display:grid;
  min-height:100vh;
  place-items:center;
  padding:24px;
  background:radial-gradient(circle at 20% 10%,rgba(124,60,191,.28),transparent 28rem),linear-gradient(145deg,var(--brand-dark),#21132f 70%);
}
.login { width:min(100%,430px); margin:0; padding:36px; border:0; box-shadow:0 24px 70px rgba(20,8,33,.32); }
.login-brand { margin:-8px 0 24px; padding-bottom:22px; border-bottom:1px solid var(--line); }
.login-brand img { display:block; width:143px; height:auto; }
.login h2 { margin-bottom:4px; }
.login .muted { margin:0 0 24px; }
@media (max-width:800px) {
  nav { position:static; width:auto; padding:16px; }
  .brand { min-height:0; margin-bottom:10px; padding:4px 8px 14px; }
  .brand img { width:112px; }
  .nav-links { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .nav-logout { margin-top:10px; padding-top:10px; border-top:1px solid var(--line); }
  main { margin:0; padding:20px 14px; }
  h2 { font-size:24px; }
  .filter-grid { grid-template-columns:1fr; }
  .filter-wide { grid-column:span 1; }
  .view-switch { position:sticky; top:0; z-index:2; padding-top:8px; background:var(--panel); }
}