:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --ink: #16202a;
  --muted: #667085;
  --line: #d9dee7;
  --primary: #0f766e;
  --primary-dark: #115e59;
  --accent: #b45309;
  --danger: #b42318;
  --ok: #087443;
  --shadow: 0 10px 28px rgba(22, 32, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.45;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0.25rem;
  font-size: 2rem;
  line-height: 1.1;
}

h2 {
  margin-bottom: 1rem;
  font-size: 1.15rem;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  padding: 0.65rem 1rem;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

button:hover,
.button:hover {
  border-color: #b7c1ce;
  transform: translateY(-1px);
}

.primary {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

.primary:hover {
  border-color: var(--primary-dark);
  background: var(--primary-dark);
}

.danger {
  border-color: var(--danger);
  background: var(--danger);
  color: #fff;
}

.small {
  min-height: 2rem;
  padding: 0.35rem 0.65rem;
  font-size: 0.9rem;
}

.full {
  width: 100%;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem max(1rem, calc((100vw - 1120px) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  font-size: 0.95rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a,
.link-button {
  min-height: 2.3rem;
  border: 0;
  background: transparent;
  padding: 0.45rem 0.65rem;
  color: var(--muted);
}

.nav a:hover,
.link-button:hover {
  color: var(--ink);
  transform: none;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.5rem 0 3rem;
}

.auth-shell {
  display: grid;
  min-height: calc(100vh - 8rem);
  place-items: center;
}

.auth-panel,
.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.auth-panel {
  width: min(420px, 100%);
  padding: 1.5rem;
}

.panel {
  margin-bottom: 1rem;
  padding: 1.25rem;
}

.narrow {
  width: min(620px, 100%);
  margin-inline: auto;
}

.page-heading,
.panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.page-heading {
  margin: 0.5rem 0 1rem;
}

.eyebrow {
  margin-bottom: 0.35rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.muted {
  color: var(--muted);
}

.messages {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.message {
  border-radius: 8px;
  padding: 0.8rem 1rem;
  background: #edf7f5;
  color: var(--primary-dark);
}

.message-error {
  background: #fff1f0;
  color: var(--danger);
}

.message-success {
  background: #edf8f2;
  color: var(--ok);
}

label {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  min-height: 2.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  padding: 0.65rem 0.75rem;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(15, 118, 110, 0.18);
  border-color: var(--primary);
}

.stack {
  display: grid;
  gap: 1rem;
}

.inline-form,
.form-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
  align-items: end;
}

.inline-form {
  grid-template-columns: 1fr auto;
}

.form-grid.compact {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grow,
.wide {
  grid-column: 1 / -1;
}

.check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink);
}

.check input {
  width: 1rem;
  min-height: 1rem;
}

.split,
.session-grid,
.stats-grid,
.admin-grid {
  display: grid;
  gap: 1rem;
}

.split {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.session-grid {
  align-items: start;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.45fr);
}

.stats-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 1rem;
}

.admin-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stat,
.admin-link {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.stat strong {
  display: block;
  font-size: 2rem;
}

.stat span {
  color: var(--muted);
}

.admin-link {
  min-height: 5rem;
  display: flex;
  align-items: center;
  font-weight: 800;
}

.danger-link {
  color: var(--danger);
}

.list {
  display: grid;
  gap: 0.6rem;
}

.list-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.85rem;
}

.list-row small {
  display: block;
  color: var(--muted);
}

.badge,
.status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  min-height: 2rem;
  border-radius: 999px;
  background: #eef2f6;
  color: var(--muted);
  padding: 0.25rem 0.65rem;
  font-size: 0.88rem;
  font-weight: 800;
}

.badge-ok,
.status.completed {
  background: #e8f7ef;
  color: var(--ok);
}

.badge-strong,
.status.draft {
  background: #fff4df;
  color: var(--accent);
}

.participant-results,
.selected-list {
  display: grid;
  gap: 0.6rem;
  margin-top: 1rem;
}

.participant-row,
.selected-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 0.8rem;
  text-align: left;
}

.participant-row.selected {
  border-color: rgba(15, 118, 110, 0.55);
  background: #edf7f5;
}

.person-name {
  display: block;
  font-weight: 800;
}

.person-meta {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
}

.select-pill {
  flex: 0 0 auto;
  border-radius: 999px;
  background: #eef2f6;
  color: var(--muted);
  padding: 0.35rem 0.6rem;
  font-size: 0.8rem;
  font-weight: 800;
}

.participant-row.selected .select-pill {
  background: var(--primary);
  color: #fff;
}

.save-state {
  color: var(--muted);
  font-size: 0.85rem;
}

.save-state.saving {
  color: var(--accent);
}

.save-state.saved {
  color: var(--ok);
}

.save-state.error {
  color: var(--danger);
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 0.75rem;
  text-align: left;
  vertical-align: middle;
}

th {
  color: var(--muted);
  font-size: 0.85rem;
}

.actions {
  text-align: right;
}

.search-form {
  min-width: 240px;
}

.danger-zone {
  border-color: rgba(180, 35, 24, 0.35);
}

@media (max-width: 820px) {
  h1 {
    font-size: 1.55rem;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    justify-content: flex-start;
  }

  .page-heading,
  .panel-title {
    align-items: flex-start;
    flex-direction: column;
  }

  .split,
  .session-grid,
  .stats-grid,
  .admin-grid,
  .inline-form,
  .form-grid,
  .form-grid.compact {
    grid-template-columns: 1fr;
  }

  .container {
    width: min(100% - 1rem, 1120px);
    padding-top: 0.75rem;
  }

  .panel,
  .auth-panel {
    padding: 1rem;
  }

  .list-row,
  .participant-row,
  .selected-item {
    align-items: flex-start;
    flex-direction: column;
  }

  .search-form {
    width: 100%;
    min-width: 0;
  }
}