:root {
  --bg: #141822;
  --bg-elevated: #1b2230;
  --ink: #e7edf8;
  --ink-muted: #9ca9bf;
  --border: #2b3548;
  --accent: #3f78d1;
  --accent-soft: #294c80;
}

.app-body {
  font-family: "Plus Jakarta Sans", sans-serif;
  min-height: 100vh;
  color: var(--ink);
  background: radial-gradient(circle at 0% 0%, #1f2535 0%, var(--bg) 50%), var(--bg);
}

.app-nav {
  background: rgba(20, 24, 34, 0.92);
  backdrop-filter: blur(6px);
}

.admin-layout {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr;
}

.admin-sidebar {
  border-right: 1px solid var(--border);
  background: linear-gradient(180deg, #171d2a 0%, #121722 100%);
}

.admin-main {
  width: 100%;
}

.navbar-brand,
.nav-link {
  color: var(--ink) !important;
}

.nav-link {
  display: block;
  border-radius: 0.55rem;
  padding: 0.45rem 0.6rem;
  opacity: 0.8;
}

.nav-link:hover {
  opacity: 1;
  background: rgba(63, 120, 209, 0.12);
}

.nav-link.active {
  background: rgba(63, 120, 209, 0.22);
  border: 1px solid rgba(79, 134, 218, 0.35);
}

.nav-group-item {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  margin-bottom: 0.7rem;
  overflow: hidden;
}

.nav-group-toggle,
.nav-group-toggle:not(.collapsed) {
  background: #1a2130;
  color: var(--ink);
  box-shadow: none;
}

.nav-group-toggle::after {
  filter: invert(1) brightness(1.2);
}

.nav-group-body {
  display: grid;
  gap: 0.35rem;
  padding: 0.55rem;
}

.nav-subheading {
  color: var(--ink-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0.2rem 0.15rem;
}

summary.nav-subheading {
  cursor: pointer;
  list-style: none;
  user-select: none;
}

summary.nav-subheading::-webkit-details-marker {
  display: none;
}

.config-tabs {
  border-bottom: 0;
}

.config-tabs .nav-link {
  background: transparent;
  border: 0;
  border-right: 1px solid #ffffff;
  border-radius: 0;
  color: var(--ink);
  margin: 0;
  opacity: 1;
}

.config-tabs .nav-item:last-child .nav-link {
  border-right: 0;
}

.config-tabs .nav-link.active,
.config-tabs .nav-link:hover,
.config-tabs .nav-link:focus {
  background: transparent;
  border: 0;
  border-right: 1px solid #ffffff;
  color: var(--ink);
  box-shadow: none;
}

.config-tabs .nav-item:last-child .nav-link.active,
.config-tabs .nav-item:last-child .nav-link:hover,
.config-tabs .nav-item:last-child .nav-link:focus {
  border-right: 0;
}

.panel {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--border);
  box-shadow: 0 10px 24px rgba(8, 12, 18, 0.25);
  animation: panel-in 0.35s ease-out;
}

.form-control,
.form-select {
  background-color: #151d2a;
  border-color: var(--border);
  color: #ffffff;
}

.form-control::placeholder,
input.form-control::placeholder,
textarea.form-control::placeholder {
  color: #ffffff;
  opacity: 1;
}

.form-select option {
  color: #ffffff;
}

.form-control:focus,
.form-select:focus {
  color: #ffffff;
  background-color: #151d2a;
  border-color: var(--accent);
  box-shadow: 0 0 0 0.2rem rgba(63, 120, 209, 0.15);
}

.code-area,
.json-block {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.json-block {
  background: #121826;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  color: var(--ink-muted);
  padding: 0.85rem;
  max-width: 100%;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.content-preview {
  max-width: 100%;
  overflow-x: auto;
}

.content-preview * {
  max-width: 100%;
  box-sizing: border-box;
}

.content-preview pre,
.content-preview code {
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.content-preview img,
.content-preview table,
.content-preview iframe,
.content-preview video {
  max-width: 100%;
}

.btn-primary {
  background: linear-gradient(180deg, #4f86da, var(--accent));
  border-color: var(--accent-soft);
}

.text-muted {
  color: var(--ink-muted) !important;
}

.login-kicker {
  color: #84a8e5;
  letter-spacing: 0.08em;
  font-weight: 600;
}

@media (max-width: 992px) {
  .admin-layout {
    grid-template-columns: 1fr;
  }

  .admin-sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
}

@keyframes panel-in {
  from {
    transform: translateY(8px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}