:root {
  --bn-bg-main:
    radial-gradient(circle at 14% 10%, rgba(78, 161, 232, 0.2), rgba(78, 161, 232, 0) 42%),
    radial-gradient(circle at 90% -8%, rgba(10, 94, 168, 0.18), rgba(10, 94, 168, 0) 36%),
    linear-gradient(160deg, #081224 0%, #0e1d35 52%, #09142a 100%);
  --bn-surface: rgba(17, 35, 66, 0.92);
  --bn-surface-muted: rgba(19, 39, 70, 0.9);
  --bn-surface-soft: rgba(11, 24, 46, 0.88);
  --bn-accent: #4ea1e8;
  --bn-accent-strong: #6fb7f0;
  --bn-accent-soft: rgba(78, 161, 232, 0.22);
  --bn-text-main: #e2e8f0;
  --bn-text-muted: #a8b4c9;
  --bn-border-glow: rgba(111, 183, 240, 0.3);
  --bn-success: #22c479;
  --bn-warning: #f6b84c;
  --bn-danger: #ff6d72;
  --bn-radius-sm: 10px;
  --bn-radius-md: 14px;
  --bn-radius-lg: 18px;
  --bn-shadow-soft: 0 18px 40px rgba(2, 8, 20, 0.45);
  --bn-shadow-xl: 0 28px 58px rgba(2, 8, 20, 0.58);

  /* App aliases */
  --bg-main: var(--bn-bg-main);
  --bg-panel: linear-gradient(165deg, rgba(20, 42, 78, 0.95), rgba(8, 20, 39, 0.96));
  --accent: var(--bn-accent);
  --accent-soft: var(--bn-accent-soft);
  --border-glow: var(--bn-border-glow);
  --text-main: var(--bn-text-main);
  --text-muted: var(--bn-text-muted);
  --radius: var(--bn-radius-lg);
  --shadow-soft: var(--bn-shadow-soft);

  /* Landing aliases */
  --bg: #0c1730;
  --surface: rgba(16, 32, 58, 0.94);
  --surface-muted: rgba(21, 41, 74, 0.92);
  --text: var(--bn-text-main);
  --accent-strong: var(--bn-accent-strong);
  --border: var(--bn-border-glow);
  --success: var(--bn-success);
  --shadow: var(--bn-shadow-soft);
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-main);
  color: var(--text-main);
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

.bn-bg {
  background: var(--bg-main);
  color: var(--text-main);
}

.bn-card {
  border: 1px solid var(--bn-border-glow);
  border-radius: var(--bn-radius-lg);
  background: linear-gradient(165deg, var(--bn-surface), var(--bn-surface-soft));
  box-shadow: var(--bn-shadow-soft);
}

.bn-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid var(--bn-border-glow);
  background: rgba(78, 161, 232, 0.16);
  color: #d5edff;
  padding: 0.25rem 0.62rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.bn-nav {
  border: 1px solid var(--bn-border-glow);
  border-radius: var(--bn-radius-md);
  background: color-mix(in srgb, #132746 84%, transparent);
  box-shadow: inset 0 0 18px rgba(78, 161, 232, 0.08);
}

.bn-nav a {
  color: var(--bn-text-muted);
}

.bn-nav a:hover,
.bn-nav a[aria-current="page"] {
  color: var(--bn-text-main);
}

.bn-button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  border-radius: var(--bn-radius-sm);
  border: 1px solid transparent;
  min-height: 42px;
  padding: 0.55rem 0.92rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
}

.bn-button:hover,
.btn:hover {
  transform: translateY(-1px);
}

.bn-button:disabled,
.btn:disabled {
  opacity: 0.56;
  cursor: not-allowed;
  transform: none;
}

.bn-button-primary,
.btn-primary {
  color: #031124;
  background: linear-gradient(130deg, var(--bn-accent), #73c2ff);
  box-shadow: 0 10px 28px color-mix(in srgb, var(--bn-accent) 36%, transparent);
}

.bn-button-secondary,
.btn-secondary {
  color: var(--bn-text-main);
  border-color: var(--bn-border-glow);
  background: color-mix(in srgb, #132746 74%, transparent);
}

.bn-button-ghost,
.btn-ghost {
  color: var(--bn-text-main);
  border-color: var(--bn-border-glow);
  background: color-mix(in srgb, #132746 46%, transparent);
}

.bn-button-danger,
.btn-danger {
  color: #ffd9dc;
  border-color: rgba(255, 109, 114, 0.45);
  background: rgba(255, 109, 114, 0.14);
  box-shadow: 0 0 0 1px rgba(255, 109, 114, 0.18) inset;
}

.bn-input,
.field input,
.field select,
.field textarea,
input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--bn-border-glow);
  border-radius: 12px;
  background: color-mix(in srgb, #0e1f3a 86%, transparent);
  color: var(--bn-text-main);
  padding: 0.62rem 0.75rem;
  font: inherit;
}

.field textarea,
textarea {
  min-height: 90px;
  resize: vertical;
}

.bn-input:focus,
.field input:focus,
.field select:focus,
.field textarea:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 3px solid color-mix(in srgb, var(--bn-accent) 45%, transparent);
  outline-offset: 1px;
}

.bn-focus:focus-visible,
.btn:focus-visible,
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--bn-accent) 45%, transparent);
  outline-offset: 2px;
}