:root {
  /* Dark Theme Color Palette */
  --bg-page: #12121c;
  --bg-surface: #1e1e30;
  --bg-navbar: #161625;
  --text-primary: #e8e8f0;
  --text-secondary: #a0a0b8;
  --text-muted: #6c6c84;
  --border-color: #2a2a3e;
  --accent-primary: #4a90e2;
  --accent-hover: #5da3f5;
}

html {
  font-size: 14px;
  background-color: var(--bg-page);
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin-bottom: 60px;
  background-color: var(--bg-page);
  color: var(--text-primary);
}

/* Navbar dark surface */
.navbar.bg-dark-surface {
  background-color: var(--bg-navbar) !important;
}

/* Card styling for dark theme */
.card {
  background-color: var(--bg-surface);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.card-header {
  background-color: rgba(255, 255, 255, 0.05);
  border-bottom-color: var(--border-color);
}

.card-footer {
  background-color: rgba(255, 255, 255, 0.03);
  border-top-color: var(--border-color);
}

/* Footer styling */
.footer {
  background-color: var(--bg-surface);
  color: var(--text-muted);
  border-top-color: var(--border-color);
}

.footer a {
  color: var(--accent-primary);
}

.footer a:hover {
  color: var(--accent-hover);
}

/* Focus states for dark theme */
.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem rgba(74, 144, 226, 0.25), 0 0 0 0.25rem rgba(74, 144, 226, 0.5);
}

/* Form controls */
.form-control, .form-select {
  background-color: var(--bg-surface);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.form-control:focus, .form-select:focus {
  background-color: var(--bg-surface);
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--text-muted);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}

/* Tower card custom styling */
.tower-card {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tower-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
}

.tower-card .card-body {
  font-size: 0.875rem;
}

.tower-card dl {
  margin-bottom: 0.5rem;
}

.tower-card dt {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tower-card dd {
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

/* Table styling for dark theme */
.table {
  color: var(--text-primary);
  border-color: var(--border-color);
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
  background-color: rgba(255, 255, 255, 0.02);
}

.table-hover > tbody > tr:hover > * {
  background-color: rgba(255, 255, 255, 0.05);
}

html {
  position: relative;
  min-height: 100%;
}