:root {
  color-scheme: dark;
  --font-system: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-size-title: clamp(2.2rem, 5vw, 2.8rem);
  --font-size-headline: clamp(1.4rem, 3vw, 1.8rem);
  --font-size-body: 1rem;
  --font-size-caption: 0.85rem;
  --color-accent: oklch(0.623 0.214 259.815);
  --color-accent-strong: oklch(0.546 0.245 262.881);
  --color-focus: oklch(0.6 0.2 262.881 / 0.45);
  --color-success: oklch(0.78 0.16 152);
  --color-danger: oklch(0.66 0.24 22);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --shadow-s: inset 0 1px 2px #ffffff30, 0 1px 2px #00000030,
    0 2px 4px #00000015;
  --shadow-m: inset 0 1px 2px #ffffff50, 0 2px 4px #00000030,
    0 4px 8px #00000015;
  --shadow-l: inset 0 1px 2px #ffffff70, 0 4px 6px #00000030,
    0 6px 10px #00000015;
  --shadow-elevated: var(--shadow-l);
  --transition: 200ms ease;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 20px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --color-bg: oklch(0.2 0 264);
  --color-bg-alt: oklch(0.1 0 264);
  --color-surface: oklch(0.24 0 264);
  --color-surface-strong: oklch(0.3 0 264);
  --color-surface-tinted: oklch(0.32 0.04 264);
  --color-border: oklch(0.4 0 264 / 0.28);
  --color-border-strong: oklch(0.5 0 264 / 0.45);
  --color-text: oklch(0.96 0 264);
  --color-text-subtle: oklch(0.869 0.022 252.894);
  --color-text-table: oklch(0.929 0.013 255.508);
  --color-on-accent: oklch(0.98 0 264);
  --color-table-header: oklch(0.279 0.041 260.031);
  --color-toast: oklch(0.25 0.02 264);
}

* {
  box-sizing: border-box;
}

.material-symbols-rounded {
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;
  font-size: 1.5rem;
  line-height: 1;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(160deg, var(--color-bg-alt), var(--color-bg));
  color: var(--color-text-subtle);
  font-family: var(--font-system);
  font-size: var(--font-size-body);
  line-height: 1.5;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--transition), color var(--transition);
  -webkit-text-size-adjust: 100%;
}

.app-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(var(--spacing-lg), 4vw, var(--spacing-xl))
    clamp(var(--spacing-sm), 4vw, var(--spacing-md))
    calc(var(--spacing-xl) * 1.1);
  color: var(--color-text);
}

.app-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.app-header h1 {
  font-size: var(--font-size-title);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--color-text);
}

.app-header p {
  margin: var(--spacing-xs) 0 0;
  color: var(--color-text-subtle);
  font-size: var(--font-size-body);
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-sm);
}

.header-actions .subtle {
  font-size: var(--font-size-caption);
  color: var(--color-text-subtle);
}

button {
  font-family: inherit;
  border-radius: 1rem;
  padding: 12px 20px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: box-shadow var(--transition), background var(--transition),
    color var(--transition), border-color var(--transition);
  border: 1px solid transparent;
  background: var(--color-surface);
  color: var(--color-text);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: var(--shadow-s);
}

button:not([disabled]):hover {
  background: var(--color-surface-strong);
  border-color: var(--color-border);
  box-shadow: var(--shadow-m);
}

button.primary {
  background: var(--color-accent);
  border-color: transparent;
  color: var(--color-on-accent);
  font-weight: 700;
  box-shadow: var(--shadow-m);
}

button.primary:not([disabled]):hover {
  background: var(--color-accent-strong);
  box-shadow: var(--shadow-l);
}

button.icon-button {
  padding: 10px 16px;
  min-height: 44px;
  border-radius: 999px;
  border-color: transparent;
  background: var(--color-bg);
  box-shadow: var(--shadow-s);
  color: var(--color-text);
  gap: 8px;
}

button.icon-button:not([disabled]):hover {
  box-shadow: var(--shadow-m);
}

button.small {
  padding: 8px 14px;
  font-size: 0.85rem;
  border-radius: 999px;
}

button.danger {
  background: var(--color-danger);
  border-color: transparent;
  color: var(--color-on-accent);
  font-weight: 700;
  box-shadow: var(--shadow-m);
}

button[disabled],
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

button:not([disabled]):active {
  box-shadow: var(--shadow-s);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.panel {
  background: var(--color-surface);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-l);
  transition: box-shadow var(--transition);
}

.panel:hover {
  box-shadow: var(--shadow-l);
}

.panel-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2em;
  gap: var(--spacing-sm);
}

.panel-header h2 {
  margin: 0;
  font-size: var(--font-size-headline);
  font-weight: 700;
  color: var(--color-text);
  flex: 0 0 auto;
}

.loading-indicator {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--color-accent);
  animation: spin 0.8s linear infinite;
  display: none;
  flex: 0 0 auto;
}

.loading-indicator.is-visible {
  display: inline-flex;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.panel-tools {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  justify-content: flex-end;
  margin-left: auto;
}

.panel-tools .search {
  flex: none;
}

.search input {
  background: var(--color-bg);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  color: var(--color-text);
  width: min(100%, 420px);
  font-size: 1.05rem;
  transition: border-color var(--transition), box-shadow var(--transition),
    background var(--transition);
  box-shadow: var(--shadow-s);
}

.search input::placeholder {
  color: var(--color-text-subtle);
}

.search input:focus {
  border-color: var(--color-accent);
  background: var(--color-surface-tinted);
  box-shadow: var(--shadow-m);
}

.metrics {
  display: flex;
  gap: var(--spacing-sm);
  margin: var(--spacing-md) 0;
  flex-wrap: wrap;
}

.metric-card {
  flex: 1 1 180px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  padding: var(--spacing-md);
  display: grid;
  gap: var(--spacing-xs);
  box-shadow: var(--shadow-m);
}

.metric-label {
  font-size: var(--font-size-caption);
  color: var(--color-text-subtle);
}

.metric-value {
  font-size: 1.7rem;
  font-weight: 600;
  color: var(--color-text);
}

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: var(--color-surface);
  box-shadow: var(--shadow-l);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
  background: var(--color-surface);
}

.data-table thead {
  background: var(--color-table-header);
  font-size: 0.95rem;
  color: var(--color-text);
}

.data-table th,
.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.data-table tbody td {
  color: var(--color-text-table);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr.is-present {
  background: var(--color-surface-tinted);
  border-left: 3px solid var(--color-accent);
  color: var(--color-text);
}
.data-table tbody tr.is-present td {
  color: var(--color-text);
}

.data-table td.empty {
  text-align: center;
  color: var(--color-text-subtle);
}

.unregistered-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  align-items: start;
}

.card-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  overflow: hidden;
  margin-top: var(--spacing-sm);
}

.pending-card {
  border: none;
  border-radius: 0;
  padding: var(--spacing-md);
  background: transparent;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--spacing-sm);
  align-items: center;
  transition: background var(--transition), border-left var(--transition);
}

.pending-card + .pending-card {
  border-top: 1px solid var(--color-border);
}

.pending-card:not(.is-selected):hover {
  background: var(--color-surface-tinted);
}

.pending-card.is-selected {
  background: var(--color-surface-tinted);
  border-left: 3px solid var(--color-accent);
}

.pending-card header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-xs);
  margin: 0;
}

.pending-card header strong {
  font-size: 1rem;
  color: var(--color-text);
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--color-surface-tinted);
  color: var(--color-accent);
  border: 1px solid rgba(10, 132, 255, 0.3);
}

.pending-meta {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  font-size: 0.85rem;
  color: var(--color-text-subtle);
}

.pending-meta span {
  display: inline-flex;
  align-items: center;
}

.pending-meta span + span::before {
  content: "•";
  margin: 0 var(--spacing-xs);
  color: var(--color-text-subtle);
}

.pending-card button {
  margin: 0;
}

.card-actions {
  display: flex;
  gap: var(--spacing-xs);
  justify-content: flex-end;
  align-items: center;
  flex-wrap: wrap;
  grid-column: 2;
  grid-row: 1 / span 2;
}

.card-form {
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  background: var(--color-surface);
  display: grid;
  gap: var(--spacing-sm);
  box-shadow: var(--shadow-l);
}

.card-form h3 {
  margin: 0;
}

.form-field {
  display: grid;
  gap: 6px;
  font-size: 0.9rem;
}

.form-field span {
  color: var(--color-text-subtle);
}

.form-field input {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition),
    background var(--transition);
  box-shadow: var(--shadow-s);
  width: min(100%, 420px);
}

.form-field input::placeholder {
  color: var(--color-text-subtle);
}

.form-field input:focus {
  border-color: var(--color-accent);
  background: var(--color-surface-tinted);
  box-shadow: var(--shadow-m);
}

#registrationForm {
  display: grid;
  gap: var(--spacing-sm);
}

@media (min-width: 768px) {
  #registrationForm {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-md);
    align-items: start;
  }

  #registrationForm .form-actions {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }
}

.form-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
  flex-wrap: wrap;
}

.placeholder {
  margin: 0;
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--color-text-subtle);
  text-align: center;
}

button.is-loading {
  position: relative;
}

button.is-loading[disabled] {
  opacity: 1;
}

button.is-loading::before {
  content: "";
  width: 1em;
  height: 1em;
  border-radius: 50%;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-right-color: transparent;
  animation: spin 0.8s linear infinite;
  margin-right: 8px;
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  min-width: 220px;
  max-width: 320px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: var(--color-toast);
  color: var(--color-text);
  box-shadow: var(--shadow-l);
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
  transition: opacity var(--transition), transform var(--transition);
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.toast.is-success {
  background: oklch(0.78 0.16 152 / 0.9);
  color: oklch(0.16 0.04 152);
}

.toast.is-error {
  background: oklch(0.66 0.24 22 / 0.92);
  color: oklch(0.18 0.04 22);
}

.page-footer {
  margin: var(--spacing-xl) auto 0;
  max-width: 1120px;
  padding: var(--spacing-lg) clamp(var(--spacing-sm), 4vw, var(--spacing-md));
  color: var(--color-text-subtle);
  font-size: var(--font-size-caption);
  text-align: center;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 900px) {
  .unregistered-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: var(--spacing-lg) var(--spacing-sm) calc(var(--spacing-lg) * 1.5);
  }

  .panel {
    padding: var(--spacing-md);
  }

  .panel-header {
    gap: var(--spacing-sm);
  }

  .panel-header h2 {
    flex: 0 0 auto;
  }

  .panel-tools {
    flex: 1 1 100%;
    justify-content: flex-start;
    width: 100%;
    margin-left: 0;
  }

  .panel-tools .search {
    flex: 1 1 100%;
    width: 100%;
    max-width: 100%;
  }

  .metric-card {
    flex: 1 1 140px;
  }

  .search input {
    width: 100%;
  }

  .pending-card {
    grid-template-columns: 1fr;
  }

  .card-actions {
    grid-column: 1;
    grid-row: auto;
    justify-content: flex-start;
    margin-top: var(--spacing-xs);
  }

  .header-actions {
    width: 100%;
    justify-content: space-between;
  }
}

@media (max-width: 540px) {
  .header-actions {
    gap: var(--spacing-xs);
  }

  .metrics {
    flex-direction: column;
  }

  .metric-card {
    width: 100%;
  }

  button:not(.icon-button) {
    width: 100%;
  }

  .header-actions .icon-button {
    width: auto;
    min-width: 0;
    align-self: flex-start;
  }

  .header-actions .subtle {
    width: 100%;
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}