:root {
  --bg: #f4f8f8;
  --ink: #0d2126;
  --muted: #557178;
  --line: rgba(13, 33, 38, 0.1);
  --card: #ffffff;
  --accent: #009fb4;
  --accent-dark: #0d5963;
  --success: #1f8f66;
  --error: #b04a4a;
  --shadow: 0 20px 45px rgba(8, 28, 33, 0.08);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background:
    radial-gradient(circle at top left, rgba(0, 159, 180, 0.12), transparent 22rem),
    linear-gradient(180deg, #fbfdfd 0%, var(--bg) 100%);
  color: var(--ink);
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

.rcsgc-shell--auth {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-wrap {
  width: min(100%, 520px);
}

.auth-card,
.panel {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(13, 33, 38, 0.08);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.auth-card {
  padding: 30px;
}

.brand-lockup,
.topbar__brand {
  display: flex;
  gap: 18px;
  align-items: center;
}

.brand-lockup__logo,
.topbar__logo {
  width: 78px;
  height: 78px;
  object-fit: contain;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(0, 159, 180, 0.14), rgba(13, 89, 99, 0.08));
  padding: 10px;
}

.brand-lockup__eyebrow,
.topbar__eyebrow,
.panel__eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.75rem;
  font-weight: 700;
}

.brand-lockup h1,
.topbar h1,
.panel h2 {
  margin: 0;
  letter-spacing: -0.04em;
}

.brand-lockup__sub {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.auth-form,
.user-form {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.auth-form label,
.user-form label {
  display: grid;
  gap: 8px;
}

.auth-form span,
.user-form span {
  font-weight: 700;
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 13px 14px;
  font: inherit;
  color: var(--ink);
  background: #fff;
}

.btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font: inherit;
  font-weight: 700;
  padding: 13px 20px;
  text-decoration: none;
  transition: 0.2s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn--primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  box-shadow: 0 12px 26px rgba(0, 159, 180, 0.18);
}

.btn--ghost {
  color: var(--ink);
  background: rgba(13, 33, 38, 0.06);
}

.btn--danger {
  color: #fff;
  background: linear-gradient(135deg, #d14b4b, #8f2d2d);
  box-shadow: 0 12px 26px rgba(176, 74, 74, 0.18);
}

.btn--small {
  font-size: 0.88rem;
  padding: 10px 14px;
}

.user-form__actions,
.table-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.table-actions form {
  margin: 0;
}

.user-self-note {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.auth-note {
  margin: 20px 0 0;
  color: var(--muted);
}

.flash {
  margin-top: 20px;
  border-radius: 18px;
  padding: 14px 16px;
  font-weight: 700;
}

.flash--success {
  background: rgba(31, 143, 102, 0.12);
  color: var(--success);
}

.flash--error {
  background: rgba(176, 74, 74, 0.12);
  color: var(--error);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 28px;
  border-bottom: 1px solid rgba(13, 33, 38, 0.08);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.topbar__user {
  text-align: right;
}

.topbar__user strong,
.summary-total strong {
  display: block;
}

.topbar__user span,
.summary-total span,
.panel__meta span {
  color: var(--muted);
  font-size: 0.92rem;
}

.dashboard {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 22px;
  padding: 24px;
}

.dashboard__sidebar,
.dashboard__content {
  display: grid;
  gap: 22px;
  align-content: start;
}

.panel {
  padding: 24px;
}

.panel__head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.panel--summary h2 {
  font-size: 3rem;
}

.summary-total {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.workshop-nav {
  display: grid;
  gap: 10px;
}

.workshop-nav__item {
  align-items: center;
  background: rgba(0, 159, 180, 0.06);
  border: 1px solid rgba(0, 159, 180, 0.1);
  border-radius: 18px;
  color: var(--ink);
  display: flex;
  gap: 16px;
  justify-content: space-between;
  padding: 14px 16px;
  text-decoration: none;
}

.workshop-nav__item strong {
  color: var(--accent-dark);
}

.workshop-nav__item.is-active {
  background: linear-gradient(135deg, rgba(0, 159, 180, 0.16), rgba(13, 89, 99, 0.08));
  border-color: rgba(0, 159, 180, 0.22);
}

.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  border-bottom: 1px solid var(--line);
  padding: 12px 10px;
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: var(--accent-dark);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.data-table tr:last-child td {
  border-bottom: 0;
}

.table-link {
  color: var(--accent-dark);
  font-weight: 700;
  text-decoration: none;
}

.table-link:hover {
  text-decoration: underline;
}

.empty-state {
  color: var(--muted);
  margin: 0;
}

.ctf-scope-tag {
  display: inline-block;
  margin-top: 4px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.ctf-scope-tag--internal {
  background: rgba(0, 149, 168, .14);
  color: var(--accent-dark);
}

.ctf-scope-tag--external {
  background: rgba(120, 120, 120, .16);
  color: var(--muted);
}

.ctf-team-meta {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin-top: 20px;
}

.ctf-team-meta div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ctf-team-meta span {
  color: var(--muted);
  font-size: .82rem;
}

.ctf-team-delete {
  margin-top: 20px;
}

@media (max-width: 1080px) {
  .dashboard {
    grid-template-columns: 1fr;
  }
}

.export-modal[hidden] { display: none; }
.export-modal {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
}
.export-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.55);
}
.export-modal__dialog {
  position: relative;
  background: #1a2530;
  border: 1px solid rgba(140,239,255,.2);
  border-radius: 16px;
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 300px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.export-modal__title {
  font-weight: 700;
  font-size: 1.05rem;
  color: #fff;
  margin: 0 0 4px;
}
.export-modal__desc {
  font-size: .85rem;
  color: rgba(255,255,255,.6);
  margin: 0;
}
.export-modal__actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}

@media (max-width: 720px) {
  .topbar,
  .topbar__actions,
  .panel__head {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar__user {
    text-align: left;
  }

  .dashboard,
  .auth-card,
  .panel {
    padding: 18px;
  }
}