:root {
  --bg: #020617;
  --panel: rgba(15, 23, 42, 0.82);
  --soft: rgba(30, 41, 59, 0.62);
  --text: #eef6ff;
  --muted: #94a3b8;
  --blue: #38bdf8;
  --violet: #8b5cf6;
  --green: #22c55e;
  --amber: #f59e0b;
  --red: #ef4444;
  --border: rgba(148, 163, 184, 0.16);
}

body[data-theme="day"] {
  --bg: #edf7ff;
  --panel: rgba(255,255,255,.86);
  --soft: rgba(255,255,255,.68);
  --text: #0f172a;
  --muted: #516173;
  --border: rgba(14,116,144,.18);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 80% 0%, rgba(139,92,246,.18), transparent 28%),
    radial-gradient(circle at 45% 15%, rgba(56,189,248,.12), transparent 36%),
    var(--bg);
}

.faculty-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr;
}

.faculty-rail {
  padding: 26px 18px;
  background: rgba(2, 6, 23, .74);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

body[data-theme="day"] .faculty-rail {
  background: rgba(255,255,255,.72);
}

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

.brand-mark {
  height: 46px;
  width: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: var(--violet);
  border: 1px solid rgba(139,92,246,.5);
  box-shadow: 0 0 32px rgba(139,92,246,.34);
}

.brand h1 {
  margin: 0;
  font-size: 26px;
}

.brand p {
  margin: 2px 0 0;
  color: #c084fc;
  font-size: 12px;
  letter-spacing: .14em;
}

nav {
  display: grid;
  gap: 9px;
}

nav button {
  width: 100%;
  padding: 13px 14px;
  border-radius: 12px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  font-size: 14px;
}

nav button.active,
nav button:hover {
  background: rgba(139,92,246,.15);
  border-color: rgba(139,92,246,.35);
  box-shadow: inset 3px 0 0 var(--violet);
}

nav span {
  float: right;
  background: var(--violet);
  padding: 2px 8px;
  border-radius: 999px;
}

.ava-core {
  margin-top: auto;
  padding: 18px;
  border-radius: 20px;
  border: 1px solid rgba(139,92,246,.24);
  background: rgba(15,23,42,.42);
}

.orb {
  height: 92px;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(139,92,246,.8), transparent 32%),
    conic-gradient(from 90deg, transparent, rgba(56,189,248,.4), rgba(139,92,246,.65), transparent);
  filter: drop-shadow(0 0 22px rgba(139,92,246,.8));
}

.ava-core small {
  color: var(--muted);
  display: block;
  margin-top: 12px;
}

.ava-core strong {
  font-size: 28px;
}

.ava-core p {
  color: var(--muted);
  margin-bottom: 0;
}

.system-status {
  padding: 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--soft);
}

.system-status span {
  display: inline-block;
  height: 10px;
  width: 10px;
  border-radius: 50%;
  background: var(--green);
  margin-right: 8px;
}

.faculty-main {
  padding: 28px 32px;
}

.faculty-topbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  margin-bottom: 26px;
}

.faculty-topbar h2 {
  font-size: 32px;
  margin: 0;
}

.faculty-topbar p {
  color: var(--muted);
  margin: 6px 0 0;
}

.top-controls {
  display: flex;
  gap: 12px;
  align-items: center;
}

input, select, button {
  font-family: inherit;
}

.top-controls input {
  width: 360px;
}

input, select {
  padding: 12px 14px;
  border-radius: 12px;
  color: var(--text);
  background: var(--soft);
  border: 1px solid var(--border);
  outline: none;
}

button {
  color: var(--text);
  background: var(--soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 14px;
  cursor: pointer;
}

.faculty-profile {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 9px 14px;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--border);
}

.avatar {
  height: 42px;
  width: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--blue), var(--violet));
  font-weight: 900;
}

.faculty-profile span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}

.metric-row article,
.panel,
.spotlight {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 0 42px rgba(56,189,248,.06);
  backdrop-filter: blur(18px);
}

.metric-row article {
  position: relative;
  padding: 20px;
  min-height: 125px;
}

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

.metric-row strong {
  display: block;
  font-size: 32px;
  margin-top: 8px;
}

.metric-row p {
  margin: 4px 0 0;
  color: var(--muted);
}

.icon {
  position: absolute;
  right: 22px;
  top: 30px;
  font-size: 36px;
  opacity: .8;
}

.blue { color: var(--blue); }
.amber { color: var(--amber); }
.red { color: var(--red); }
.gold { color: #eab308; }

.mini-trend {
  height: 42px;
  margin-top: 8px;
  background: linear-gradient(135deg, transparent 10%, rgba(34,197,94,.35), transparent 80%);
  border-radius: 12px;
}

.faculty-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 280px;
  gap: 16px;
}

.panel {
  padding: 18px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.panel-head h3 {
  margin: 0;
}

.panel-head p {
  color: var(--muted);
  margin: 4px 0 0;
}

.filters {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}

.table-head,
.student-row {
  display: grid;
  grid-template-columns: 1.4fr 1.3fr .8fr .8fr .6fr .7fr;
  gap: 12px;
  align-items: center;
}

.table-head {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  padding: 10px 0;
}

.student-row {
  padding: 12px 0;
  border-top: 1px solid rgba(148,163,184,.12);
  font-size: 13px;
}

.student-card-name {
  display: flex;
  gap: 10px;
  align-items: center;
}

.student-face {
  height: 32px;
  width: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--blue), var(--violet));
  font-size: 12px;
}

.badge {
  padding: 5px 9px;
  border-radius: 999px;
  font-size: 12px;
}

.ok { background: rgba(34,197,94,.15); color: #86efac; }
.warn { background: rgba(245,158,11,.16); color: #fcd34d; }
.danger { background: rgba(239,68,68,.16); color: #fca5a5; }

.hours-bar {
  height: 6px;
  background: rgba(148,163,184,.16);
  border-radius: 999px;
  overflow: hidden;
}

.hours-bar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--green), var(--blue));
}

.donut-wrap {
  display: flex;
  align-items: center;
  gap: 24px;
}

.donut {
  height: 210px;
  width: 210px;
  border-radius: 50%;
  background:
    radial-gradient(circle, var(--panel) 0 42%, transparent 43%),
    conic-gradient(var(--green) 0 68%, var(--amber) 68% 87%, #f97316 87% 96%, var(--red) 96% 100%);
  display: grid;
  place-items: center;
  box-shadow: 0 0 35px rgba(34,197,94,.16);
}

.donut div {
  text-align: center;
}

.donut strong {
  display: block;
  font-size: 30px;
}

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

.legend p {
  display: flex;
  gap: 8px;
  justify-content: space-between;
  color: var(--muted);
}

.legend i {
  height: 9px;
  width: 9px;
  border-radius: 50%;
  margin-top: 6px;
}

.verified { background: var(--green); }
.pending { background: var(--amber); }
.review { background: #f97316; }
.rejected { background: var(--red); }

.deadline {
  padding: 14px 0;
  border-bottom: 1px solid rgba(148,163,184,.12);
}

.deadline b {
  display: block;
}

.deadline span,
.deadline p {
  color: var(--muted);
  margin: 4px 0;
}

.approval-panel {
  grid-column: span 1;
}

.queue-row {
  display: grid;
  grid-template-columns: 1.2fr .6fr .7fr .8fr auto auto;
  gap: 10px;
  align-items: center;
  padding: 13px 0;
  border-top: 1px solid rgba(148,163,184,.12);
  font-size: 13px;
}

.queue-row button:first-of-type {
  background: linear-gradient(135deg, var(--violet), #6d28d9);
}

.heatmap {
  display: grid;
  grid-template-columns: 1fr repeat(3, 90px);
  gap: 5px;
  align-items: center;
}

.heatmap span,
.heatmap b {
  font-size: 12px;
}

.heatmap i {
  height: 32px;
  border-radius: 4px;
}

.heatmap .low { background: linear-gradient(90deg, #dc2626, #fb7185); }
.heatmap .mid { background: linear-gradient(90deg, #f59e0b, #fcd34d); }
.heatmap .high { background: linear-gradient(90deg, #16a34a, #34d399); }
.heatmap .review { background: linear-gradient(90deg, #f97316, #fb923c); }

.remediation-card {
  padding: 14px;
  border-radius: 16px;
  background: rgba(2,6,23,.38);
  border: 1px solid rgba(148,163,184,.13);
  margin-bottom: 12px;
}

body[data-theme="day"] .remediation-card {
  background: rgba(255,255,255,.55);
}

.remediation-card strong {
  display: block;
}

.remediation-card em {
  float: right;
  font-style: normal;
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 999px;
}

.document-panel {
  margin-top: 16px;
}

.document-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr .8fr .8fr 1fr auto;
  gap: 12px;
}

.spotlight {
  margin-top: 16px;
  padding: 20px;
  display: grid;
  grid-template-columns: 54px 1fr auto 70px 1fr;
  gap: 18px;
  align-items: center;
  border-color: rgba(139,92,246,.36);
}

.spot-orb,
.ava-pulse {
  height: 54px;
  width: 54px;
  border-radius: 50%;
  background: conic-gradient(var(--violet), var(--blue), var(--violet));
  box-shadow: 0 0 30px rgba(139,92,246,.38);
}

.spotlight p {
  color: var(--muted);
  margin: 4px 0 0;
}

@media (max-width: 1280px) {
  .faculty-shell {
    grid-template-columns: 1fr;
  }

  .faculty-rail {
    display: none;
  }

  .metric-row,
  .faculty-grid,
  .document-grid,
  .filters {
    grid-template-columns: 1fr;
  }

  .spotlight {
    grid-template-columns: 1fr;
  }

  .top-controls {
    flex-wrap: wrap;
  }

  .top-controls input {
    width: 100%;
  }
}