:root {
  color-scheme: light;
  --ink: #101418;
  --muted: #66707b;
  --line: #d9e0e7;
  --bg: #f6f8fa;
  --panel: #ffffff;
  --accent: #2868d7;
  --accent-soft: rgba(40, 104, 215, 0.12);
  --danger: #dc2626;
  --ok: #059669;
  --on-accent: #ffffff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, input, select, textarea {
  font: inherit;
  touch-action: manipulation;
}

input, select, textarea { font-size: 16px; }

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(40, 104, 215, 0.45);
  outline-offset: 2px;
}

[hidden] { display: none !important; }

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
}

h1, h2, h3 { margin: 0; font-weight: 700; }
.muted { color: var(--muted); }

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

.gate-card, .panel, .modal {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.gate-card { width: min(440px, 100%); padding: 28px; }
.gate-copy { color: var(--muted); }

.gate-tabs, .pga-buttons, .filter-row, .form-grid, .metrics-grid, .staff-forms, .report-layout {
  display: grid;
  gap: 10px;
}

.gate-tabs { grid-template-columns: 1fr 1fr; margin: 18px 0; }

.gate-tab, .tab-button, .ghost-button, .secondary-button, .primary-button, .pga-button {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  border-radius: 12px;
  min-height: 44px;
  padding: 0 14px;
  cursor: pointer;
}

.gate-tab.active, .tab-button.active, .pga-button.active, .primary-button {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
  font-weight: 700;
}

.secondary-button, .ghost-button { font-family: ui-sans-serif, system-ui, sans-serif; }
.field-label {
  display: block;
  margin: 12px 0 6px;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.82rem;
  color: var(--muted);
}

.text-input, .select-input {
  width: 100%;
  min-height: 44px;
  border-radius: 12px;
  border: 1px solid #b9c4cf;
}

.error-text { color: var(--danger); }
.pga-buttons { grid-template-columns: repeat(auto-fit, minmax(72px, 1fr)); }

.student-shell {
  max-width: 860px;
  margin: 0 auto;
  padding: 20px 16px 48px;
  display: grid;
  gap: 14px;
}

.student-top, .topbar, .section-heading, .modal-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.student-id { margin: 4px 0 0; color: var(--muted); }

.fc-hero, .fc-chip {
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: 18px;
  padding: 18px;
}

.fc-value, .fc-chip {
  font-size: clamp(1.8rem, 7vw, 3.2rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1.05;
}

.fc-chip { font-size: 1.35rem; padding: 10px 14px; }

.student-grid, .metrics-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.panel { padding: 16px; }
.meter {
  height: 10px;
  margin: 10px 0;
  background: #e8eef2;
  border-radius: 99px;
  overflow: hidden;
}
.meter span {
  display: block;
  height: 100%;
  background: var(--accent);
}

.history-list { display: grid; gap: 8px; }
.history-item {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.92rem;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px 1fr;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px 18px;
  border-right: 1px solid var(--line);
  background: var(--panel);
}

.tabs { display: grid; gap: 8px; }
.sidebar-actions { margin-top: auto; display: grid; gap: 8px; }
.sync-status {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.8rem;
  color: var(--ok);
}

.main-content { padding: 22px; }
.view { display: none; }
.view.active-view { display: block; }

.filter-row { grid-template-columns: 2fr 1fr 1fr; margin: 16px 0; }
.roster-list, .staff-forms { display: grid; gap: 10px; margin-top: 16px; }
.staff-forms { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.roster-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  width: 100%;
  text-align: left;
  padding: 14px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: inherit;
  cursor: pointer;
}

.modal { width: min(420px, 92vw); padding: 18px; border: 0; }
.modal::backdrop { background: rgba(0,0,0,0.55); }
.icon-button {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
}
.toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  background: var(--accent);
  color: var(--on-accent);
  padding: 12px 14px;
  border-radius: 12px;
  font-family: ui-sans-serif, system-ui, sans-serif;
}

.config-note { color: var(--muted); max-width: 70ch; }

.choice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(92px, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

.choice-button {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  border-radius: 12px;
  min-height: 44px;
  padding: 8px 10px;
  cursor: pointer;
}

.choice-button.selected {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
  font-weight: 700;
}

.action-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.danger-button {
  border: 1px solid var(--danger);
  background: var(--danger);
  color: var(--on-accent);
  border-radius: 12px;
  min-height: 48px;
  padding: 0 14px;
  cursor: pointer;
  font-weight: 700;
}

.session-panel .primary-button,
.session-panel .danger-button {
  min-height: 52px;
  font-size: 1.05rem;
}
.gate.compact {
  min-height: 0;
  padding: 16px 16px 0;
}

.start-session-button {
  min-height: 56px;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.timer-value {
  margin: 0;
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  font-weight: 700;
  color: var(--accent);
}

.registration-form h3 { margin: 8px 0 4px; }
.chooser { margin-top: 8px; }

.entitlement-panel { padding: 14px 16px; }
.entitlement-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.entitlement-panel p { margin: 0; }
.entitlement-panel .field-label { margin: 0 0 4px; }
.entitlement-expiry { margin-top: 4px; font-size: 0.82rem; }

@media (max-width: 860px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--line); }
  .filter-row { grid-template-columns: 1fr; }
  .student-top, .topbar { flex-direction: column; }
}