:root {
  --sd-space-1: 8px;
  --sd-space-2: 16px;
  --sd-space-3: 24px;
  --sd-space-4: 32px;
  --sd-space-5: 40px;
  --sd-space-6: 48px;
  --sd-radius-sm: 10px;
  --sd-radius-md: 16px;
  --sd-radius-lg: 24px;
  --sd-shadow-1: 0 6px 18px rgba(15, 23, 42, 0.08);
  --sd-shadow-2: 0 12px 28px rgba(15, 23, 42, 0.12);
  --sd-transition-fast: 140ms ease;
  --sd-transition: 220ms ease;
  --sd-font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --sd-bg: #f6f8fc;
  --sd-bg-alt: #edf1f9;
  --sd-surface: #ffffff;
  --sd-surface-2: #f9fbff;
  --sd-text: #172033;
  --sd-text-2: #344156;
  --sd-muted: #5f6f88;
  --sd-border: #d8e0ee;
  --sd-outline: #9db4ff;
  --sd-primary: #4f6ef7;
  --sd-primary-hover: #3f5ce0;
  --sd-primary-active: #3148c7;
  --sd-success: #0f9d76;
  --sd-error: #d14343;
  --sd-warning: #b07a16;
}

html[data-theme="dark"] {
  --sd-bg: #131720;
  --sd-bg-alt: #10141c;
  --sd-surface: #1a2030;
  --sd-surface-2: #161c2a;
  --sd-text: #f4f7ff;
  --sd-text-2: #cad4ea;
  --sd-muted: #aab6cf;
  --sd-border: #2c3548;
  --sd-outline: #7ea1ff;
  --sd-primary: #82a1ff;
  --sd-primary-hover: #7394fa;
  --sd-primary-active: #6284ec;
  --sd-shadow-1: 0 8px 22px rgba(0, 0, 0, 0.32);
  --sd-shadow-2: 0 16px 32px rgba(0, 0, 0, 0.38);
}

html { font-size: 16px; }

body.sd-body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  color: var(--sd-text);
  background: radial-gradient(circle at 5% 0%, rgba(125, 157, 255, 0.2), transparent 40%), var(--sd-bg);
  font-family: var(--sd-font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.sd-container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(16px, 3vw, 40px);
}

a { color: var(--sd-primary); text-decoration: none; }
a:hover { color: var(--sd-primary-hover); }

.sd-skip-link {
  position: absolute;
  left: -9999px;
  top: var(--sd-space-2);
  z-index: 1200;
  background: var(--sd-primary);
  color: #fff;
  border-radius: var(--sd-radius-sm);
  padding: 10px 14px;
}
.sd-skip-link:focus {
  left: var(--sd-space-2);
  box-shadow: var(--sd-shadow-2);
}

.sd-main {
  flex: 1;
  padding-block: var(--sd-space-5);
}

.sd-page { padding-block: var(--sd-space-2) var(--sd-space-5); }
.sd-muted { color: var(--sd-muted); }

.sd-nav {
  border-bottom: 1px solid var(--sd-border);
  background: color-mix(in srgb, var(--sd-surface) 88%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 12px 0;
}

.sd-brand {
  color: var(--sd-text);
  font-weight: 800;
  font-size: 1.125rem;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.sd-nav-items {
  margin-top: var(--sd-space-2);
}

.sd-nav-toggler {
  border: 1px solid var(--sd-border);
  border-radius: var(--sd-radius-sm);
}

.navbar-toggler.sd-nav-toggler:focus {
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--sd-outline) 50%, transparent);
}

.sd-icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--sd-border);
  background: var(--sd-surface);
  color: var(--sd-text-2);
  display: inline-grid;
  place-items: center;
  transition: transform var(--sd-transition-fast), background-color var(--sd-transition-fast);
}
.sd-icon-btn:hover { transform: translateY(-1px); background: var(--sd-surface-2); }

.sd-footer {
  border-top: 1px solid var(--sd-border);
  background: var(--sd-surface);
  padding-block: var(--sd-space-3);
}

.sd-btn {
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 10px 18px;
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform var(--sd-transition-fast), box-shadow var(--sd-transition-fast), background-color var(--sd-transition-fast), border-color var(--sd-transition-fast), color var(--sd-transition-fast);
}

.sd-btn-primary {
  background: var(--sd-primary);
  color: #fff;
  box-shadow: var(--sd-shadow-1);
}
.sd-btn-primary:hover { background: var(--sd-primary-hover); transform: translateY(-1px); }
.sd-btn-primary:active { background: var(--sd-primary-active); transform: translateY(0); }
.sd-btn-primary:disabled,
.sd-btn-primary.disabled {
  background: color-mix(in srgb, var(--sd-primary) 40%, #fff);
  cursor: not-allowed;
  box-shadow: none;
}

.sd-btn-danger {
  background: color-mix(in srgb, var(--sd-error) 86%, #fff);
  color: #fff;
  box-shadow: var(--sd-shadow-1);
}
.sd-btn-danger:hover {
  background: color-mix(in srgb, var(--sd-error) 94%, #000);
  transform: translateY(-1px);
}

.sd-btn-ghost {
  border-color: var(--sd-border);
  background: var(--sd-surface);
  color: var(--sd-text);
}
.sd-btn-ghost:hover { border-color: var(--sd-outline); background: var(--sd-surface-2); }
.sd-btn:focus-visible,
.sd-input:focus-visible,
.sd-bottom-nav-item:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--sd-outline) 50%, transparent);
  outline-offset: 1px;
}

.sd-surface {
  background: var(--sd-surface);
  border: 1px solid var(--sd-border);
  border-radius: var(--sd-radius-md);
  box-shadow: var(--sd-shadow-1);
  transition: box-shadow var(--sd-transition), transform var(--sd-transition-fast), border-color var(--sd-transition-fast);
}

.sd-card {
  padding: clamp(20px, 2vw, 28px);
}

.sd-card:hover {
  border-color: color-mix(in srgb, var(--sd-outline) 45%, var(--sd-border));
  box-shadow: var(--sd-shadow-2);
}

.sd-page-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--sd-space-3);
}

.sd-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: color-mix(in srgb, var(--sd-primary) 12%, var(--sd-surface));
  color: var(--sd-primary);
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 600;
  margin-bottom: var(--sd-space-2);
}

.sd-page-title,
.sd-auth-title {
  font-size: clamp(1.65rem, 3vw, 2.4rem);
  line-height: 1.2;
  margin: 0 0 8px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.sd-page-subtitle,
.sd-auth-subtitle {
  margin: 0;
  color: var(--sd-text-2);
  font-size: 1.05rem;
  max-width: 70ch;
}

.sd-panel-wrap { display: grid; gap: var(--sd-space-3); }

.sd-stat-card { position: relative; overflow: hidden; }
.sd-stat-label { color: var(--sd-muted); font-size: 0.9rem; margin-bottom: var(--sd-space-1); }
.sd-stat-value { font-size: clamp(1.7rem, 3vw, 2.2rem); font-weight: 800; line-height: 1.1; }
.sd-stat-icon {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 1.25rem;
  color: color-mix(in srgb, var(--sd-primary) 70%, var(--sd-text));
}

.sd-card-headline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sd-space-2);
}

.sd-card-title { font-size: 1.1rem; font-weight: 700; color: var(--sd-text); }
.sd-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 10px;
  background: color-mix(in srgb, var(--sd-primary) 12%, var(--sd-surface));
  color: var(--sd-primary);
  font-size: 0.8rem;
  font-weight: 600;
}

.sd-table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--sd-text);
  --bs-table-border-color: var(--sd-border);
  --bs-table-hover-color: var(--sd-text);
  --bs-table-hover-bg: color-mix(in srgb, var(--sd-primary) 8%, transparent);
  margin-bottom: 0;
}
.sd-table td,
.sd-table th { padding: 12px; font-size: 0.9rem; }
.sd-table th {
  color: var(--sd-muted);
  font-weight: 600;
  border-bottom-width: 1px;
}

.sd-auth {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--sd-space-4);
  align-items: start;
}

.sd-auth-content {
  background: transparent;
  border: 0;
  box-shadow: none;
  padding-inline: 0;
}

.sd-feature-list {
  list-style: none;
  padding: 0;
  margin: var(--sd-space-3) 0 0;
  display: grid;
  gap: var(--sd-space-2);
}
.sd-feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--sd-text-2);
}

.sd-auth-form { display: grid; gap: var(--sd-space-2); }
.sd-field { display: grid; gap: 6px; }
.form-label { margin: 0; font-weight: 600; color: var(--sd-text-2); }

.sd-input {
  border-radius: 12px;
  border: 1px solid var(--sd-border);
  min-height: 46px;
  color: var(--sd-text);
  background: var(--sd-surface);
}
.sd-input:focus {
  border-color: var(--sd-outline);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--sd-outline) 30%, transparent);
  background: var(--sd-surface);
  color: var(--sd-text);
}

.sd-input.is-valid,
.was-validated .sd-input:valid {
  border-color: var(--sd-success);
  background-image: none;
}

.sd-input.is-invalid,
.was-validated .sd-input:invalid {
  border-color: var(--sd-error);
  background-image: none;
}

.valid-feedback { color: var(--sd-success); font-size: 0.8rem; }
.invalid-feedback { color: var(--sd-error); font-size: 0.8rem; }

.sd-alert {
  border-radius: 12px;
  padding: 12px 14px;
  font-weight: 600;
}

.sd-alert-error {
  background: color-mix(in srgb, var(--sd-error) 12%, var(--sd-surface));
  border: 1px solid color-mix(in srgb, var(--sd-error) 38%, transparent);
  color: var(--sd-error);
}

.sd-alert-success {
  background: color-mix(in srgb, var(--sd-success) 12%, var(--sd-surface));
  border: 1px solid color-mix(in srgb, var(--sd-success) 38%, transparent);
  color: var(--sd-success);
}

.sd-section-title { margin: 0 0 6px; font-weight: 700; color: var(--sd-text); }

.sd-page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
}

.sd-users-toolbar {
  position: sticky;
  top: 88px;
  z-index: 20;
}

.sd-mini-stat {
  padding-block: 18px;
}

.sd-empty-state {
  min-height: 240px;
  display: grid;
  place-items: center;
  text-align: center;
  gap: 10px;
  color: var(--sd-text-2);
}
.sd-empty-state i {
  font-size: 2rem;
  color: var(--sd-primary);
}
.sd-empty-state h3 {
  margin: 0;
  font-size: 1.1rem;
}
.sd-empty-state p {
  margin: 0;
  max-width: 46ch;
}

.sd-user-table td {
  vertical-align: top;
}

.sd-user-title,
.sd-cell-strong {
  font-weight: 700;
  color: var(--sd-text);
}

.sd-user-subtitle {
  color: var(--sd-muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

.sd-inline-meta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  color: var(--sd-text-2);
  font-size: 0.8rem;
}

.sd-fingerprint-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sd-fingerprint-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--sd-border);
  background: var(--sd-surface-2);
  color: var(--sd-text-2);
  font-size: 0.78rem;
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sd-fingerprint-more {
  background: color-mix(in srgb, var(--sd-primary) 10%, var(--sd-surface));
  color: var(--sd-primary);
}

.sd-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 0.8rem;
  font-weight: 700;
  border: 1px solid transparent;
}

.sd-status-active {
  background: color-mix(in srgb, var(--sd-success) 12%, var(--sd-surface));
  color: var(--sd-success);
  border-color: color-mix(in srgb, var(--sd-success) 35%, transparent);
}

.sd-status-warning {
  background: color-mix(in srgb, var(--sd-warning) 14%, var(--sd-surface));
  color: var(--sd-warning);
  border-color: color-mix(in srgb, var(--sd-warning) 35%, transparent);
}

.sd-status-muted {
  background: color-mix(in srgb, var(--sd-border) 35%, var(--sd-surface));
  color: var(--sd-text-2);
  border-color: var(--sd-border);
}

.sd-row-actions {
  display: inline-flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px;
}

.sd-detail-row td {
  padding: 0;
}

.sd-detail-panel {
  padding: 0 12px 16px;
}

.sd-detail-card {
  height: 100%;
  border: 1px solid var(--sd-border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--sd-surface) 86%, var(--sd-bg));
  padding: 18px;
}

.sd-detail-title {
  font-weight: 700;
  margin-bottom: 14px;
}

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

.sd-detail-item {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--sd-border);
}

.sd-detail-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.sd-modal {
  background: var(--sd-surface);
  color: var(--sd-text);
  border: 1px solid var(--sd-border);
  border-radius: 20px;
  box-shadow: var(--sd-shadow-2);
}

.sd-textarea {
  min-height: 120px;
  resize: vertical;
}

.sd-highlight-line {
  padding: 12px 14px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--sd-primary) 10%, var(--sd-surface));
  color: var(--sd-text-2);
  border: 1px solid color-mix(in srgb, var(--sd-primary) 18%, transparent);
}

.sd-switch {
  min-height: 46px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  border: 1px solid var(--sd-border);
  border-radius: 12px;
  background: var(--sd-surface);
}

.sd-switch .form-check-input {
  margin: 0;
}

.sd-switch .form-check-label {
  margin: 0;
}

.sd-bottom-nav-item-active {
  background: color-mix(in srgb, var(--sd-primary) 12%, var(--sd-surface));
  color: var(--sd-primary);
}

.sd-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: none;
  background: color-mix(in srgb, var(--sd-surface) 92%, transparent);
  border-top: 1px solid var(--sd-border);
  backdrop-filter: blur(12px);
  z-index: 1050;
  padding: 8px 10px calc(env(safe-area-inset-bottom) + 8px);
}

.sd-bottom-nav-item {
  flex: 1;
  color: var(--sd-text-2);
  border: 0;
  background: transparent;
  text-align: center;
  border-radius: 12px;
  padding: 8px;
  font-size: 0.8rem;
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  align-items: center;
  justify-content: center;
}

.sd-bottom-nav-item:hover {
  background: color-mix(in srgb, var(--sd-primary) 10%, var(--sd-surface));
  color: var(--sd-primary);
}

.sd-lazy {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--sd-transition), transform var(--sd-transition);
  content-visibility: auto;
}
.sd-lazy.sd-in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 768px) {
  .sd-nav-items { margin-top: 0; }
}

@media (max-width: 991.98px) {
  .sd-auth {
    grid-template-columns: 1fr;
    gap: var(--sd-space-3);
  }

  .sd-page-actions {
    justify-content: flex-start;
  }

  .sd-users-toolbar {
    position: static;
  }
}

@media (max-width: 767.98px) {
  .sd-main { padding-bottom: 96px; }
  .sd-bottom-nav { display: flex; }
  .sd-page-title { font-size: 1.6rem; }
  .sd-page-subtitle { font-size: 0.95rem; }
  .sd-nav-action { width: 100%; }
  .sd-nav-items { gap: var(--sd-space-1); }
  .sd-row-actions {
    width: 100%;
  }
  .sd-detail-item {
    flex-direction: column;
    align-items: flex-start;
  }
  .sd-page-actions .sd-btn {
    width: 100%;
  }
}

@media (min-width: 1920px) {
  .sd-container { max-width: 1520px; }
}

@media (max-width: 375px) {
  .sd-card { padding: 18px; }
  .sd-table td,
  .sd-table th { padding: 10px 8px; font-size: 0.82rem; }
  .sd-btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}