:root {
  --atenea-bg: #0f172a;
  --atenea-bg-soft: #111827;
  --atenea-surface: rgba(15, 23, 42, 0.88);
  --atenea-surface-alt: rgba(15, 23, 42, 0.72);
  --atenea-primary: #6366f1;
  --atenea-primary-strong: #4f46e5;
  --atenea-accent: #38bdf8;
  --atenea-text: #e2e8f0;
  --atenea-text-soft: #cbd5f5;
  --atenea-border: rgba(99, 102, 241, 0.18);
}

body {
  font-family: 'Inter', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  background-color: #f8fafc;
}

.navbar.navbar-pf {
  background: linear-gradient(120deg, var(--atenea-bg) 0%, #1e293b 50%, #312e81 100%);
  border: 0;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.35);
}

.navbar.navbar-pf .navbar-brand,
.navbar.navbar-pf .navbar-brand:focus,
.navbar.navbar-pf .navbar-brand:hover {
  color: var(--atenea-text);
}

.navbar.navbar-pf .navbar-brand img {
  height: 28px;
  width: auto;
  filter: drop-shadow(0 4px 12px rgba(99, 102, 241, 0.45));
}

.navbar-default .navbar-nav > li > a,
.navbar-default .navbar-nav > li > a:focus,
.navbar-default .navbar-nav > li > a:hover {
  color: var(--atenea-text) !important;
}

.navbar-default .navbar-nav > li > a:hover,
.navbar-default .navbar-nav > li.open > a,
.navbar-default .navbar-nav > li.open > a:focus,
.navbar-default .navbar-nav > li.open > a:hover {
  background: rgba(99, 102, 241, 0.18);
}

.navbar-default .navbar-toggle .icon-bar {
  background-color: var(--atenea-text);
}

.navbar-default .navbar-toggle:hover,
.navbar-default .navbar-toggle:focus {
  background: rgba(99, 102, 241, 0.25);
}

.navbar-default .dropdown-menu {
  background: rgba(15, 23, 42, 0.98);
  border: 1px solid var(--atenea-border);
  box-shadow: 0 18px 32px rgba(15, 23, 42, 0.55);
}

.navbar-default .dropdown-menu > li > a {
  color: var(--atenea-text);
}

.navbar-default .dropdown-menu > li > a:hover {
  background: rgba(99, 102, 241, 0.15);
  color: #ffffff;
}

.navbar-default .dropdown-menu .divider {
  background-color: rgba(99, 102, 241, 0.25);
}

.btn-primary,
.btn-primary:focus {
  background: linear-gradient(135deg, var(--atenea-primary) 0%, var(--atenea-accent) 100%);
  border-color: transparent;
  box-shadow: 0 10px 20px rgba(79, 70, 229, 0.25);
}

.btn-primary:hover,
.btn-primary:active,
.btn-primary:active:focus {
  background: linear-gradient(135deg, var(--atenea-primary-strong) 0%, var(--atenea-primary) 100%);
  box-shadow: 0 12px 24px rgba(79, 70, 229, 0.38);
}

.btn-primary:disabled,
.btn-primary[disabled] {
  background: rgba(99, 102, 241, 0.35);
  box-shadow: none;
}

html.login-pf body {
  background: radial-gradient(circle at 20% 20%, rgba(79, 70, 229, 0.35), transparent 45%),
              radial-gradient(circle at 80% 10%, rgba(56, 189, 248, 0.45), transparent 50%),
              radial-gradient(circle at 50% 80%, rgba(59, 130, 246, 0.35), transparent 45%),
              linear-gradient(180deg, var(--atenea-bg), #020617 85%);
  min-height: 100vh;
  color: var(--atenea-text);
}

html.login-pf .container {
  padding-top: 6rem;
  padding-bottom: 4rem;
}

html.login-pf .login {
  background: var(--atenea-surface);
  border-radius: 16px;
  border: 1px solid var(--atenea-border);
  box-shadow: 0 30px 60px rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(6px);
  color: var(--atenea-text);
}

html.login-pf .login label,
html.login-pf .login .help-block a {
  color: var(--atenea-text-soft);
}

html.login-pf .login .form-control {
  background-color: rgba(15, 23, 42, 0.7);
  border-color: rgba(99, 102, 241, 0.35);
  color: #f8fafc;
}

html.login-pf .login .form-control:focus {
  border-color: var(--atenea-primary);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.35);
}

html.login-pf .login .help-block a:hover {
  color: var(--atenea-accent);
}

html.login-pf .details {
  color: var(--atenea-text);
  background: var(--atenea-surface-alt);
  border-radius: 20px;
  padding: 3rem 2.5rem;
  box-shadow: inset 0 0 0 1px var(--atenea-border);
  backdrop-filter: blur(6px);
}

html.login-pf .details strong {
  font-size: 1.75rem;
  line-height: 1.35;
  color: #f9fafb;
}

html.login-pf .details p {
  font-size: 1.05rem;
  color: var(--atenea-text-soft);
}

html.login-pf .details .brand-highlight {
  color: var(--atenea-accent);
  font-weight: 600;
}

.alert.alert-danger,
.alert.alert-warning,
.alert.alert-info,
.alert.alert-success {
  background: rgba(15, 23, 42, 0.9);
  color: var(--atenea-text);
  border-color: rgba(99, 102, 241, 0.35);
  box-shadow: 0 15px 30px rgba(15, 23, 42, 0.35);
}

.table > thead > tr > th {
  background-color: rgba(15, 23, 42, 0.88);
  color: var(--atenea-text);
}

a,
.navbar-brand {
  transition: color 0.2s ease, background 0.2s ease;
}

a:hover,
.navbar-brand:hover {
  color: var(--atenea-accent);
}

.footer-links,
.navbar-default .navbar-utility > li > a {
  color: var(--atenea-text-soft) !important;
}

.footer-links a:hover,
.navbar-default .navbar-utility > li > a:hover {
  color: var(--atenea-accent) !important;
}

html.login-pf .container .brand-lockup {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

html.login-pf .container .brand-lockup img {
  width: 56px;
  height: auto;
  filter: drop-shadow(0 10px 20px rgba(56, 189, 248, 0.35));
}

html.login-pf .container .brand-lockup .brand-title {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #e0e7ff;
}