body {
  background:
    radial-gradient(circle at 12% 18%, rgba(59, 130, 246, 0.16), transparent 0 18%, rgba(59, 130, 246, 0) 19%),
    radial-gradient(circle at 88% 14%, rgba(168, 85, 247, 0.14), transparent 0 16%, rgba(168, 85, 247, 0) 17%),
    radial-gradient(circle at 80% 82%, rgba(16, 185, 129, 0.10), transparent 0 14%, rgba(16, 185, 129, 0) 15%),
    radial-gradient(circle at 14% 82%, rgba(245, 158, 11, 0.10), transparent 0 13%, rgba(245, 158, 11, 0) 14%),
    linear-gradient(135deg, #f7f9ff 0%, #edf3ff 34%, #f9f5ff 68%, #eefbf8 100%);
  transition: background 0.3s;
  font-family: 'Manrope', 'Segoe UI', Arial, sans-serif;
  min-height: 100vh;
  position: relative;
}

[data-bs-theme="light"] body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.20) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.20) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: 0.35;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.65), transparent 88%);
}

[data-bs-theme="dark"] body {
  background:
    radial-gradient(circle at 12% 18%, rgba(59, 130, 246, 0.20), transparent 0 18%, rgba(59, 130, 246, 0) 19%),
    radial-gradient(circle at 88% 14%, rgba(168, 85, 247, 0.18), transparent 0 16%, rgba(168, 85, 247, 0) 17%),
    radial-gradient(circle at 80% 82%, rgba(16, 185, 129, 0.14), transparent 0 14%, rgba(16, 185, 129, 0) 15%),
    radial-gradient(circle at 14% 82%, rgba(245, 158, 11, 0.12), transparent 0 13%, rgba(245, 158, 11, 0) 14%),
    linear-gradient(135deg, #0a0f1c 0%, #101828 40%, #111827 70%, #0f172a 100%);
}

[data-bs-theme="dark"] body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.22;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.55), transparent 88%);
}

.app-navbar {
  background: linear-gradient(90deg, rgba(15, 23, 42, 0.96), rgba(30, 41, 59, 0.94));
  backdrop-filter: blur(14px);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.75rem;
  background: linear-gradient(135deg, rgba(255,255,255,.18), rgba(255,255,255,.05));
}

.navbar-action {
  border-radius: 999px;
}

.page-wrap {
  position: relative;
}

.card,
.glass-card,
.card-soft,
.quick-guide,
.result-shell,
.hero-panel,
.history-hero {
  border-radius: 1.5rem;
}

.glass-card,
.hero-panel,
.card-soft,
.result-shell,
.history-hero,
.quick-guide {
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(148, 163, 184, 0.18);
  box-shadow: 0 18px 60px rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(20px);
}

[data-bs-theme="dark"] .glass-card,
[data-bs-theme="dark"] .hero-panel,
[data-bs-theme="dark"] .card-soft,
[data-bs-theme="dark"] .result-shell,
[data-bs-theme="dark"] .history-hero,
[data-bs-theme="dark"] .quick-guide {
  background: rgba(17, 24, 39, 0.72);
  border-color: rgba(148, 163, 184, 0.12);
}

.hero-panel {
  padding: 1.5rem;
}

.section-pill,
.status-badge,
.chip,
.history-pill,
.result-tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.section-pill {
  padding: 0.4rem 0.8rem;
  background: rgba(58, 141, 222, 0.12);
  color: #2b7bd8;
}

.chip {
  padding: 0.45rem 0.8rem;
  background: rgba(59, 130, 246, 0.10);
  color: #2563eb;
  border: 1px solid rgba(59, 130, 246, 0.14);
}

.status-badge,
.result-tag,
.history-pill {
  padding: 0.35rem 0.75rem;
  background: rgba(16, 185, 129, 0.12);
  color: #059669;
}

.quick-guide,
.card-soft {
  padding: 1.25rem;
}

.guide-step {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.guide-step:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.guide-step span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #3a8dde, #6f42c1);
  color: #fff;
  font-weight: 700;
  flex: 0 0 auto;
}

.btn-gradient {
  background: linear-gradient(135deg, #3a8dde 0%, #6f42c1 100%);
  color: #fff;
  border: none;
  border-radius: 1rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-gradient:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(58, 141, 222, 0.22);
}

.form-label {
  font-weight: 600;
}

.form-control,
.form-select {
  border-radius: 1rem;
  border-color: rgba(148, 163, 184, 0.32);
  box-shadow: none;
  padding-top: 0.8rem;
  padding-bottom: 0.8rem;
}

.form-control:focus,
.form-select:focus {
  border-color: #3a8dde;
  box-shadow: 0 0 0 0.18rem rgba(58, 141, 222, 0.14);
}

.alert-success {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(56, 189, 248, 0.10));
  color: inherit;
  border: none;
  border-radius: 1rem;
}

.alert-secondary {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.10), rgba(168, 85, 247, 0.10));
  color: inherit;
  border: none;
}

.result-shell {
  padding: 1.25rem;
}

.result-head {
  padding: 1rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, rgba(236, 253, 245, 0.95), rgba(219, 234, 254, 0.9));
}

[data-bs-theme="dark"] .result-head {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 41, 59, 0.92));
}

.result-text {
  margin-top: 0.75rem;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  word-break: break-word;
}

.steps-list {
  display: grid;
  gap: 0.65rem;
}

.step-item {
  padding: 0.85rem 1rem;
  border-radius: 0.9rem;
  background: rgba(148, 163, 184, 0.09);
  border: 1px solid rgba(148, 163, 184, 0.15);
  font-size: 0.95rem;
}

.detail-card {
  padding: 0.95rem 1rem;
  border-radius: 1rem;
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid rgba(148, 163, 184, 0.15);
}

.detail-card span {
  display: block;
  font-size: 0.82rem;
  color: #64748b;
  margin-bottom: 0.35rem;
}

.detail-card strong {
  word-break: break-word;
}

.tips-list {
  padding-left: 1.1rem;
  margin-bottom: 0;
  color: var(--bs-body-color);
}

.tips-list li + li {
  margin-top: 0.7rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.feature-card {
  padding: 0.9rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, rgba(58, 141, 222, 0.11), rgba(111, 66, 193, 0.11));
  border: 1px solid rgba(148, 163, 184, 0.18);
  font-weight: 600;
  text-align: center;
}

.history-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
}

.history-table {
  min-width: 900px;
}

.history-table thead th {
  background: rgba(59, 130, 246, 0.09);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.history-table tbody tr:nth-child(even) {
  background: rgba(148, 163, 184, 0.05);
}

.history-text {
  max-width: 240px;
  white-space: normal;
  word-break: break-word;
}

.matrix-table td {
  min-width: 2.5rem;
  text-align: center;
  font-weight: 700;
}

.empty-state {
  max-width: 420px;
  margin: 0 auto;
}

.empty-icon {
  width: 4rem;
  height: 4rem;
  border-radius: 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  background: linear-gradient(135deg, rgba(58, 141, 222, 0.12), rgba(111, 66, 193, 0.12));
}

.table {
  background: transparent;
}

.table > :not(caption) > * > * {
  background-color: transparent;
}

.animate__animated {
  animation-duration: 0.7s;
}

.shadow-sm {
  box-shadow: 0 2px 8px rgba(0,0,0,0.07)!important;
}

@media (max-width: 991.98px) {
  .history-hero {
    flex-direction: column;
    align-items: flex-start;
  }

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

@media (max-width: 575.98px) {
  .hero-panel,
  .glass-card,
  .card-soft,
  .quick-guide,
  .result-shell,
  .history-hero {
    border-radius: 1.1rem;
  }

  .display-6 {
    font-size: 2rem;
  }
}