:root {
  color-scheme: dark;
  --bg: #0f1419;
  --bg-elevated: #1a2332;
  --bg-card: #1e2a3a;
  --bg-hover: #263447;
  --border: #2d3a4d;
  --border-strong: #3d4f66;
  --text: #e8eef6;
  --text-muted: #8b9cb3;
  --text-dim: #6b7c93;
  --accent: #3b9eff;
  --accent-soft: rgba(59, 158, 255, 0.15);
  --accent-hover: #5aadff;
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, 0.12);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-lift: 0 14px 36px rgba(0, 0, 0, 0.45);
  --radius: 12px;
  --radius-sm: 8px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --header-h: 64px;
  --glow-1: rgba(59, 158, 255, 0.12);
  --glow-2: rgba(167, 139, 250, 0.08);
  --header-bg: rgba(15, 20, 25, 0.85);
  --btn-primary-text: #061018;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f6fa;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;
  --bg-hover: #eef1f7;
  --border: #dfe4ec;
  --border-strong: #c5ccd8;
  --text: #16202c;
  --text-muted: #55607a;
  --text-dim: #7a8499;
  --accent: #1868c9;
  --accent-soft: rgba(24, 104, 201, 0.1);
  --accent-hover: #2f7ed8;
  --danger: #dc2626;
  --danger-soft: rgba(220, 38, 38, 0.08);
  --shadow: 0 8px 32px rgba(30, 41, 59, 0.1);
  --shadow-lift: 0 12px 28px rgba(30, 41, 59, 0.16);
  --glow-1: rgba(24, 104, 201, 0.08);
  --glow-2: rgba(124, 79, 214, 0.06);
  --header-bg: rgba(255, 255, 255, 0.85);
  --btn-primary-text: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, var(--glow-1), transparent),
    radial-gradient(ellipse 60% 40% at 90% 0%, var(--glow-2), transparent),
    var(--bg);
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner, main {
  width: min(74rem, calc(100% - 2.5rem));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
  padding: 0.75rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: 1.05rem;
}

.brand .admin-tag {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

main { padding: 1.75rem 0 4rem; }

h1, h2, h3, p { margin: 0; }

h1 {
  font-size: 2rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.lede {
  margin-top: 0.75rem;
  color: var(--text-muted);
  max-width: 38rem;
}

.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}

form { display: grid; gap: 0.75rem; }

label {
  font-size: 0.875rem;
  font-weight: 650;
  color: var(--text-muted);
}

input, select, textarea {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.checklist {
  display: grid;
  gap: 0.4rem;
  max-height: 16rem;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.75rem;
  background: var(--bg);
}

.checklist label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 400;
  color: var(--text);
  cursor: pointer;
}

.checklist label input { width: auto; }

.checklist-group-title {
  margin-top: 0.5rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font: inherit;
  font-weight: 650;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.btn:hover { background: var(--bg-hover); border-color: var(--border-strong); }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  padding: 0.7rem 1rem;
  background: var(--accent);
  border-color: var(--accent);
  color: var(--btn-primary-text);
  font-weight: 600;
}

.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-ghost { background: transparent; }
.btn-ghost:hover { color: var(--text); }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger-soft); }
.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.8125rem; }

.error {
  color: var(--danger);
  font-size: 0.875rem;
}

.notice {
  color: var(--accent);
  font-size: 0.875rem;
}

.fine {
  margin-top: 0.9rem;
  color: var(--text-dim);
  font-size: 0.8125rem;
}

header.hub-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}

header.hub-head .lede { margin-top: 0; }

.sections { display: grid; gap: 0.75rem; margin-top: 1.5rem; }

.section {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.section > summary, .shell {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.95rem 1.1rem;
}

.section > summary {
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius);
}

.section[open] > summary {
  border-bottom: 1px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
}

.section > summary::-webkit-details-marker { display: none; }
.section > summary::marker { content: ""; }
.section > summary:hover { background: var(--bg-hover); }
.section > summary:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

.section > summary h2, .shell h2 {
  flex: 1;
  min-width: 0;
  font-size: 1.0625rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.count, .soon {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.chevron {
  width: 0.5rem;
  height: 0.5rem;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg) translate(-1px, -1px);
  flex: none;
}

.section[open] > summary .chevron { transform: rotate(225deg) translate(-1px, -1px); }

.shell { background: var(--bg-elevated); box-shadow: none; }
.shell h2 { color: var(--text-muted); font-weight: 600; }

.boards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 1rem;
  list-style: none;
}

.section:not([open]) > .boards { display: none; }
.boards > li { display: flex; min-width: 0; margin: 0; }

a.board {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
  padding: 1rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: var(--text);
  font-weight: 400;
  text-decoration: none;
  transition: background 0.15s, border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

a.board:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-lift);
  color: var(--text);
  transform: translateY(-2px);
}

a.board:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
a.board:active { transform: translateY(0) scale(0.99); }

.board h3 { font-size: 1.0625rem; font-weight: 650; letter-spacing: -0.02em; }

.blurb {
  flex: 1;
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.45;
}

.access {
  margin: 0.45rem 0 0;
  padding-top: 0.65rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 400;
}

.access span {
  display: block;
  margin-bottom: 0.1rem;
  color: var(--text-dim);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

th, td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

th {
  color: var(--text-dim);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

tr:hover td { background: var(--bg-hover); }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border: 1px solid var(--border-strong);
  color: var(--text-muted);
}

.badge-admin { color: var(--accent); border-color: var(--accent); }
.badge-inactive { color: var(--danger); border-color: var(--danger); }

.admin-nav {
  display: flex;
  gap: 0.5rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.admin-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 650;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

.admin-nav a.active, .admin-nav a:hover {
  color: var(--text);
  background: var(--bg-hover);
  border-color: var(--border);
}

.row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.row-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 90;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(28rem, 100vw);
  background: var(--bg-elevated);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow-lift);
  z-index: 91;
  padding: 1.5rem;
  overflow-y: auto;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 720px) {
  .grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .boards { grid-template-columns: 1fr; }
}

[hidden] { display: none !important; }