:root {
  color-scheme: light;
  --sage: #1E4A3D;
  --sage-dark: #102E27;
  --sage-muted: #7E9084;
  --sage-soft: #DCE5DC;
  --ivory: #F1EDE2;
  --terracotta: #C8A592;
  --graphite: #1C2421;
  --surface: rgba(255, 253, 249, 0.86);
  --surface-strong: #FFFDF9;
  --line: rgba(30, 74, 61, 0.16);
  --danger: #9B3E32;
  --danger-bg: #F6E8E4;
  --warn-text: #785B3F;
  --warn-bg: #F2E7D8;
  --ok-text: #1E4A3D;
  --ok-bg: #DCE5DC;
}

.studio-shell {
  width: min(100% - 32px, 1120px);
  margin: 0 auto;
  padding: clamp(28px, 5vw, 64px) 0 72px;
}

.workspace-tabs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 6px;
  border-radius: 12px;
  background: rgba(220, 229, 220, 0.55);
  border: 1px solid var(--line);
  margin: 18px 0 24px;
}

.workspace-tab {
  border: 1px solid transparent;
  background: transparent;
  color: var(--sage-dark);
  padding: 10px 16px;
  border-radius: 9px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
}

.workspace-tab.active {
  background: var(--sage);
  color: #FFFFFF;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(168px, 1fr));
  gap: 12px;
  margin: 20px 0 24px;
}

.kpi-card {
  padding: 16px 18px;
  border-radius: 14px;
  background: rgba(220, 229, 220, 0.42);
  border: 1px solid var(--line);
}

.kpi-card span {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--sage-muted);
}

.kpi-card strong {
  display: block;
  margin-top: 6px;
  color: var(--sage-dark);
  font-family: "Cormorant Garamond", serif;
  font-size: 30px;
  font-weight: 600;
  line-height: 1.05;
}

.workspace-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 18px;
}

.search-box {
  flex: 1 1 260px;
  max-width: 420px;
}

.search-box input {
  width: 100%;
  border: 1px solid rgba(30, 74, 61, 0.24);
  border-radius: 9px;
  background: var(--surface-strong);
  padding: 10px 13px;
  color: var(--graphite);
  font-size: 13px;
}

.search-box input:focus {
  border-color: var(--sage-muted);
  outline: none;
  box-shadow: 0 0 0 3px rgba(126, 144, 132, 0.18);
}

.students-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.95fr);
  gap: 20px;
  align-items: start;
}

.student-list {
  display: grid;
  gap: 12px;
}

.student-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  background: var(--surface);
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

.student-card.selected {
  border-color: var(--sage);
  box-shadow: 0 12px 28px -18px rgba(16, 46, 39, 0.35);
}

.student-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.student-card h3 {
  margin: 0;
  font-size: 16px;
  color: var(--sage-dark);
}

.student-meta {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--sage-muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.badge.active,
.badge.approved {
  background: var(--ok-bg);
  color: var(--ok-text);
}

.badge.pending_activation,
.badge.pending {
  background: var(--warn-bg);
  color: var(--warn-text);
}

.badge.suspended,
.badge.rejected,
.badge.revoked {
  background: var(--danger-bg);
  color: var(--danger);
}

.detail-drawer {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  background: var(--surface-strong);
  position: sticky;
  top: 96px;
}

.detail-section {
  padding-top: 16px;
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

.permissions-list {
  display: grid;
  gap: 10px;
  margin: 12px 0;
}

.permission-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(241, 237, 226, 0.65);
  border: 1px solid var(--line);
  font-size: 12px;
  color: var(--graphite);
}

.invite-banner {
  margin-top: 12px;
  padding: 14px;
  border-radius: 12px;
  background: rgba(220, 229, 220, 0.52);
  border: 1px solid rgba(30, 74, 61, 0.25);
}

.invite-banner code {
  display: block;
  padding: 9px 11px;
  margin: 8px 0;
  background: #FFFDF9;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 11px;
  word-break: break-all;
  color: var(--sage-dark);
}

.audit-list {
  display: grid;
  gap: 8px;
  max-height: 240px;
  overflow-y: auto;
  margin-top: 10px;
}

.audit-item {
  padding: 10px 12px;
  border-radius: 9px;
  background: rgba(241, 237, 226, 0.55);
  border: 1px solid var(--line);
  font-size: 12px;
}

.audit-item time {
  display: block;
  font-size: 10px;
  color: var(--sage-muted);
  margin-top: 3px;
}

.portal-shell {
  max-width: 920px;
  margin: 0 auto;
}

.portal-card {
  background: rgba(255, 253, 249, 0.9);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: clamp(22px, 4vw, 38px);
  box-shadow: 0 20px 45px -28px rgba(16, 46, 39, 0.22);
}

.portal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.portal-feature-box {
  padding: 16px;
  border-radius: 14px;
  background: rgba(220, 229, 220, 0.36);
  border: 1px solid var(--line);
}

.portal-feature-box h3 {
  margin: 0 0 6px;
  font-size: 19px;
  color: var(--sage-dark);
}

.portal-feature-box p {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--graphite);
}

button[disabled],
.button[disabled] {
  opacity: 0.58;
  cursor: not-allowed;
  transform: none !important;
}

@media (max-width: 860px) {
  .students-layout {
    grid-template-columns: 1fr;
  }
  .detail-drawer {
    position: static;
  }
}