:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary: #0f172a;
  --accent: #38bdf8;
  --surface: #f8fafc;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #07111f;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.12) 1px, transparent 1px),
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.14), transparent 30%);
  background-size: 40px 40px, 40px 40px, auto;
  color: #e2e8f0;
  position: relative;
  overflow-x: hidden;
}

main,
.container {
  flex: 1 0 auto;
}

footer.site-footer {
  flex-shrink: 0;
}

.navbar {
  background: #0f172a !important;
  box-shadow: var(--shadow);
}

.navbar-brand,
.nav-link,
.navbar-text {
  color: #fff !important;
}

.btn {
  border-radius: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.btn:hover,
.btn:focus {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.16);
}

.btn-primary,
.btn-secondary {
  color: #fff !important;
  border-color: transparent;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.2);
}

.btn-primary {
  background: #2563eb;
  background-image: none;
}

.btn-primary:hover {
  background: #1d4ed8;
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.25), 0 10px 24px rgba(37, 99, 235, 0.32);
}

.btn-secondary {
  background: #334155;
}

.btn-secondary:hover {
  background: #475569;
  box-shadow: 0 0 0 1px rgba(148, 163, 184, 0.22), 0 10px 24px rgba(51, 65, 85, 0.28);
}

.btn-outline-secondary,
.btn-outline-primary,
.btn-outline-info,
.btn-outline-light {
  color: #f8fafc !important;
  background-color: #1e3a8a;
  border: 1px solid #3b82f6;
}

.btn-outline-secondary:hover,
.btn-outline-primary:hover,
.btn-outline-info:hover,
.btn-outline-light:hover {
  color: #fff !important;
  background-color: #2563eb;
  border-color: #60a5fa;
  box-shadow: 0 0 0 1px rgba(96, 165, 250, 0.28), 0 10px 24px rgba(37, 99, 235, 0.3);
}

.card,
.list-group-item,
.table,
.form-control,
.form-select {
  border-color: rgba(148, 163, 184, 0.24);
  box-shadow: var(--shadow);
}

.card {
  border: 0;
  border-radius: 1rem;
}

.hero-panel {
  background: rgba(15, 23, 42, 0.88);
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 1.25rem;
  padding: 2rem;
  color: #f8fafc;
}

.page-title {
  color: #f8fafc;
  font-weight: 700;
}

.section-card {
  border-radius: 1rem;
  background: rgba(15, 23, 42, 0.86);
  border: 1px solid rgba(148, 163, 184, 0.22);
  color: #f8fafc;
}

.text-muted {
  color: #cbd5e1 !important;
}

.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 0.75rem;
}

.table-responsive > .table {
  min-width: 720px;
  margin-bottom: 0;
}

img,
video,
iframe {
  max-width: 100%;
  height: auto;
}

body,
p,
.card-title,
.card-text,
.alert,
.btn,
.nav-link,
.navbar-brand {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.site-footer {
  background: rgba(2, 6, 23, 0.9);
  color: #f8fafc;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
}

.site-footer a {
  color: #bfdbfe;
  text-decoration: none;
}

.site-footer a:hover {
  color: #ffffff;
  text-decoration: underline;
}

@media (max-width: 768px) {
  body {
    background-image: radial-gradient(circle at top left, rgba(56, 189, 248, 0.14), transparent 30%);
    background-size: auto;
  }

  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .hero-panel,
  .section-card {
    padding: 1.25rem;
  }

  .card {
    border-radius: 0.85rem;
  }

  .btn {
    width: 100%;
    margin-top: 0.25rem;
  }

  .navbar-brand {
    font-size: 1.05rem;
  }
}

@media (max-width: 576px) {
  body {
    font-size: 0.95rem;
  }

  .page-title {
    font-size: 1.35rem;
  }

  .hero-panel,
  .section-card {
    padding: 1rem;
  }

  .card-body {
    padding: 1rem;
  }
}