:root {
  --blue: #0b4f7a;
  --blue-dark: #08324f;
  --blue-soft: #e8f2fa;
  --green: #2f7d53;
  --red: #b34242;
  --bg: #f5f7fa;
  --panel: #ffffff;
  --text: #17212b;
  --muted: #5d6d7e;
  --line: #dce3ea;
  --shadow: 0 10px 28px rgba(21, 42, 61, 0.08);
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; background: var(--bg); color: var(--text); }
.topbar { min-height: 64px; padding: 12px 28px; background: #fff; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 16px; position: sticky; top: 0; z-index: 10; }
.topbar strong { display: block; color: var(--blue-dark); font-size: 18px; }
.topbar span { color: var(--muted); font-size: 13px; }
nav { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
nav a, nav button { border: 0; background: transparent; color: var(--muted); text-decoration: none; padding: 8px 11px; border-radius: 6px; cursor: pointer; font: inherit; font-size: 14px; }
nav a:hover, nav button:hover { background: var(--blue-soft); color: var(--blue); }
.button { display: inline-flex; align-items: center; justify-content: center; border-radius: 6px; padding: 9px 12px; font-weight: 700; text-decoration: none; }
.button.secondary { background: var(--blue-soft); color: var(--blue-dark); }
main { max-width: 1180px; margin: 0 auto; padding: 24px 20px 44px; }
.banner { margin-bottom: 22px; background: #fff; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; box-shadow: var(--shadow); }
.banner img { display: block; width: 100%; height: auto; object-fit: contain; }
.intro { display: grid; grid-template-columns: 1fr 220px; gap: 18px; align-items: start; margin-bottom: 20px; }
h1, h2, p { margin-top: 0; }
h1 { font-size: 32px; line-height: 1.1; color: var(--blue-dark); margin-bottom: 8px; }
h2 { font-size: 20px; color: var(--blue-dark); margin-bottom: 0; }
.intro p:not(.eyebrow) { color: var(--muted); line-height: 1.5; max-width: 760px; }
.section-note { color: var(--muted); font-size: 13px; line-height: 1.35; margin: 6px 0 0; }
.eyebrow { margin: 0 0 5px; color: var(--blue); font-weight: 700; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.user-card { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 14px; box-shadow: var(--shadow); }
.user-card span { display: block; color: var(--muted); font-size: 12px; }
.user-card strong { color: var(--blue-dark); }
.tabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 18px; }
.tab { border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 13px; text-align: left; cursor: pointer; min-height: 78px; }
.tab strong { display: block; font-size: 15px; margin-bottom: 4px; }
.tab span { color: var(--muted); font-size: 13px; }
.tab.active { border-color: var(--blue); box-shadow: inset 0 0 0 1px var(--blue); background: #f0f7fc; }
.layout { display: grid; grid-template-columns: .88fr 1.12fr; gap: 18px; align-items: start; }
.panel { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 18px; box-shadow: var(--shadow); }
.panel-heading { display: flex; justify-content: space-between; align-items: start; gap: 12px; margin-bottom: 16px; }
.details { display: grid; gap: 0; margin: 0; }
.details div { display: grid; grid-template-columns: 170px minmax(0, 1fr); column-gap: 18px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.details dt { color: var(--muted); font-weight: 700; min-width: 0; overflow-wrap: anywhere; }
.details dt::after { content: ':'; }
.details dd { margin: 0; min-width: 0; }
.details a, .material a { color: var(--blue); font-weight: 700; text-decoration: none; }
.summary-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 16px; }
.summary-strip div { border: 1px solid var(--line); border-radius: 8px; padding: 10px; background: #f8fbfd; }
.summary-strip strong { display: block; color: var(--blue-dark); font-size: 22px; }
.summary-strip span { display: block; color: var(--muted); font-size: 12px; }
.agenda { display: grid; gap: 0; }
.agenda-item { display: grid; grid-template-columns: 96px 1fr; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.agenda-time { color: var(--blue); font-weight: 700; }
.agenda-title { font-weight: 700; margin: 0 0 3px; }
.agenda-desc { color: var(--muted); line-height: 1.4; margin: 0; }
.materials-section { margin-top: 18px; }
.registrations-section { margin-top: 18px; }
.filters { display: grid; grid-template-columns: 1.4fr .8fr .9fr auto; gap: 10px; align-items: end; margin-bottom: 14px; }
.filters input, .filters select { min-height: 38px; background: #fff; }
.filter-count { min-height: 38px; display: inline-flex; align-items: center; justify-content: center; padding: 0 12px; border: 1px solid var(--line); border-radius: 6px; color: var(--blue-dark); font-weight: 700; white-space: nowrap; background: #f8fbfd; }
.materials { display: grid; gap: 16px; }
.material-browser { display: grid; gap: 14px; }
.material-browser-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
.folder-toolbar { display: flex; align-items: center; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.breadcrumbs { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; color: var(--muted); font-size: 13px; }
.breadcrumbs strong { color: var(--blue-dark); }
.breadcrumb-link { border: 0; background: transparent; color: var(--blue); font: inherit; font-weight: 700; padding: 0; cursor: pointer; }
.folder-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.folder-card { width: 100%; min-width: 0; min-height: 88px; border: 1px solid var(--line); border-radius: 8px; background: #fff; padding: 12px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; align-items: center; }
.folder-card:hover { border-color: var(--blue); background: #f8fbfd; }
.folder-open { min-width: 0; border: 0; background: transparent; padding: 2px; display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 12px; align-items: center; text-align: left; cursor: pointer; }
.folder-card strong { display: block; color: var(--blue-dark); font-size: 15px; line-height: 1.3; overflow-wrap: anywhere; }
.folder-card small { display: block; color: var(--muted); margin-top: 4px; line-height: 1.25; overflow-wrap: anywhere; }
.folder-download { color: var(--blue); font-size: 13px; font-weight: 700; text-decoration: none; white-space: nowrap; }
.folder-download:hover { text-decoration: underline; }
.folder-icon { width: 40px; height: 30px; border-radius: 5px; background: #f0b84f; position: relative; box-shadow: inset 0 -7px 0 rgba(0,0,0,.08); }
.folder-icon::before { content: ""; position: absolute; left: 4px; top: -7px; width: 18px; height: 9px; border-radius: 4px 4px 0 0; background: #f5c866; }
.material-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.material { border: 1px solid var(--line); border-radius: 8px; padding: 12px; display: grid; gap: 8px; min-height: 112px; }
.material small { color: var(--muted); font-weight: 700; }
.material h4 { margin: 0; font-size: .95rem; }
.material-actions { display: flex; gap: 8px; flex-wrap: wrap; align-self: end; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { color: var(--muted); font-size: 12px; text-align: left; border-bottom: 1px solid var(--line); padding: 9px 8px; }
td { border-bottom: 1px solid var(--line); padding: 10px 8px; vertical-align: top; }
td strong, td span { display: block; }
td span { color: var(--muted); font-size: 12px; margin-top: 2px; }
td a { color: var(--blue); font-weight: 700; text-decoration: none; }
.pill { display: inline-flex; align-items: center; min-height: 24px; border-radius: 999px; padding: 3px 8px; font-weight: 700; font-size: 12px; }
.pill.ok { background: #e8f5ee; color: var(--green); }
.pill.info { background: var(--blue-soft); color: var(--blue-dark); }
.empty-cell { color: var(--muted); text-align: center; padding: 18px; }
button.primary, button.secondary, button.ghost { border: 0; border-radius: 6px; padding: 9px 12px; font-weight: 700; cursor: pointer; }
button.primary { background: var(--blue); color: #fff; }
button.secondary { background: var(--blue-soft); color: var(--blue-dark); }
button.ghost { background: #eef1f4; color: var(--muted); }
button.danger { color: var(--red); }
.hidden { display: none !important; }
dialog { border: 0; border-radius: 10px; padding: 0; width: min(620px, calc(100vw - 24px)); box-shadow: 0 24px 60px rgba(0,0,0,.22); }
dialog::backdrop { background: rgba(8, 31, 48, .45); }
.modal-form { padding: 20px; display: grid; gap: 12px; }
.wide-modal { width: min(860px, calc(100vw - 24px)); }
label { display: grid; gap: 5px; font-weight: 700; color: var(--muted); font-size: 13px; }
input, textarea, select { width: 100%; border: 1px solid var(--line); border-radius: 6px; padding: 9px 10px; font: inherit; color: var(--text); }
textarea { resize: vertical; }
.two-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.check { grid-template-columns: auto 1fr; align-items: center; }
.check input { width: auto; }
menu { display: flex; justify-content: flex-end; gap: 8px; margin: 6px 0 0; padding: 0; }
.hint { color: var(--muted); font-size: 13px; margin: 0; }
.empty { color: var(--muted); padding: 12px 0; }
@media (max-width: 820px) {
  .banner { display: none; }
  .intro, .layout, .tabs, .folder-grid, .material-list, .filters { grid-template-columns: minmax(0, 1fr); }
  .summary-strip { grid-template-columns: 1fr; }
  h1 { font-size: 25px; }
  .topbar { align-items: flex-start; flex-direction: column; padding: 12px 18px; }
  main { padding: 18px 14px 34px; }
  .material-browser, .folder-grid, .folder-card { max-width: 100%; }
  .material-browser-head { align-items: flex-start; flex-direction: column; }
  .folder-toolbar { width: 100%; justify-content: space-between; }
  .folder-card { padding: 12px; grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .folder-open { grid-template-columns: 34px minmax(0, 1fr); gap: 10px; }
  .folder-card > .folder-download { margin-left: 44px; justify-self: start; }
  .folder-icon { width: 34px; height: 26px; }
  .folder-icon::before { width: 16px; height: 8px; top: -6px; }
  .details div, .agenda-item, .two-cols { grid-template-columns: 1fr; gap: 4px; }
}