:root {
  color-scheme: dark;
  --bg: #090b0e;
  --surface: #101419;
  --surface-2: #151b22;
  --line: #28313b;
  --line-strong: #3c4854;
  --text: #eef4f8;
  --muted: #95a4ae;
  --accent: #1dd3b0;
  --accent-2: #f1b545;
  --danger: #ff6b6b;
  --shadow: rgba(0, 0, 0, 0.32);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(120deg, rgba(29, 211, 176, 0.05), transparent 34%),
    radial-gradient(circle at 80% 0%, rgba(241, 181, 69, 0.08), transparent 28%),
    var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  letter-spacing: 0;
}

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

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 24px;
  background: rgba(12, 16, 20, 0.94);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 28px;
}

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

.brand-mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid var(--accent);
  background: #0d211f;
  color: var(--accent);
  font-weight: 800;
  border-radius: 6px;
}

.brand h1,
.brand p,
.topbar h2,
.topbar p,
.panel h3,
.section-title h3,
.section-title p {
  margin: 0;
}

.brand h1 {
  font-size: 1.35rem;
  letter-spacing: 0.08em;
}

.brand p,
.eyebrow,
.section-title p {
  color: var(--muted);
  font-size: 0.82rem;
}

.nav {
  display: grid;
  gap: 8px;
}

.nav-item,
.ghost-button,
.icon-button,
.primary-button {
  min-height: 42px;
  border-radius: 6px;
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--surface-2);
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.nav-item {
  text-align: left;
  padding: 0 14px;
}

.nav-item:hover,
.nav-item.active,
.ghost-button:hover,
.icon-button:hover {
  border-color: var(--accent);
  background: #10211f;
}

.primary-button {
  border-color: var(--accent);
  background: var(--accent);
  color: #04110f;
  font-weight: 800;
  padding: 0 16px;
}

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

.operator {
  margin-top: auto;
  padding: 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 6px;
  display: grid;
  gap: 4px;
}

.operator span {
  color: var(--muted);
  font-size: 0.78rem;
}

.main {
  padding: 26px;
  min-width: 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
}

.topbar h2 {
  font-size: clamp(1.5rem, 2.3vw, 2.35rem);
}

.top-actions,
.search-row,
.form-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-button,
.ghost-button {
  padding: 0 14px;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

.metric,
.panel,
.search-panel,
.form-section {
  border: 1px solid var(--line);
  background: rgba(16, 20, 25, 0.86);
  box-shadow: 0 12px 28px var(--shadow);
  border-radius: 8px;
}

.metric {
  padding: 18px;
  min-height: 112px;
  display: grid;
  align-content: space-between;
}

.metric span {
  color: var(--muted);
  font-size: 0.86rem;
}

.metric strong {
  font-size: 2rem;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

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

.panel,
.search-panel {
  padding: 18px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.stat-list,
.case-list,
.lesson-list {
  display: grid;
  gap: 10px;
}

.stat-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-2);
}

.stat-row span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.stat-row strong {
  color: var(--accent);
}

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

.search-panel {
  margin-bottom: 14px;
}

.search-panel label {
  display: grid;
  gap: 12px;
  color: var(--muted);
}

.search-row {
  display: grid;
  grid-template-columns: minmax(420px, 1fr) 230px;
  gap: 10px;
  align-items: center;
}

.search-row input {
  min-width: 0;
  min-height: 50px;
  font-size: 1rem;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #090d11;
  color: var(--text);
  padding: 11px 12px;
  outline: none;
}

textarea {
  min-height: 96px;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent);
}

.case-form {
  display: grid;
  gap: 14px;
}

.form-section {
  padding: 18px;
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 18px;
}

.form-section.critical {
  border-color: rgba(241, 181, 69, 0.75);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.form-grid label,
.lesson-label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 0.9rem;
}

.full,
.lesson-label {
  grid-column: 1 / -1;
}

.form-actions {
  justify-content: flex-end;
  padding-bottom: 32px;
}

.case-card {
  padding: 16px;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 8px;
}

.case-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 10px;
}

.case-card h3 {
  margin: 4px 0 0;
  font-size: 1.05rem;
  overflow-wrap: anywhere;
}

.case-id {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
}

.status-pill {
  flex: 0 0 auto;
  padding: 5px 9px;
  border-radius: 999px;
  background: #0c2824;
  color: var(--accent);
  border: 1px solid rgba(29, 211, 176, 0.45);
  font-size: 0.76rem;
  max-width: 130px;
  text-align: center;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.case-meta span {
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--muted);
  background: #0b1015;
  font-size: 0.78rem;
}

.case-diagnosis,
.case-lesson {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.45;
}

.case-lesson {
  color: #d8c289;
}

.lesson-item {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-2);
}

.lesson-item p {
  margin: 0 0 8px;
  color: #e4d199;
}

.lesson-item span {
  color: var(--muted);
  font-size: 0.82rem;
}

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .nav {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .nav-item {
    text-align: center;
    padding: 0 8px;
  }

  .metric-grid,
  .dashboard-grid,
  .form-section,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .wide,
  .full,
  .lesson-label {
    grid-column: auto;
  }
}

@media (max-width: 640px) {
  .main,
  .sidebar {
    padding: 16px;
  }

  .topbar,
  .top-actions,
  .form-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .search-row {
    grid-template-columns: 1fr;
  }

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

  .case-card-head {
    flex-direction: column;
  }
}