:root {
  --bg-gradient: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  --text-primary: #ffffff;
  --text-secondary: #e0e0e0;
  --accent-color: #4facfe;
  --accent-hover: #00f2fe;
  --error-color: #ff6b6b;
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background: var(--bg-gradient);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

.container {
  width: 100%;
  max-width: 480px;
  padding: 2rem;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  padding: 2.5rem;
  text-align: center;
  transition: transform 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-5px);
}

h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

p.subtitle {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.form-group {
  margin-bottom: 1.5rem;
  text-align: left;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

input[type="email"],
input[type="password"] {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s ease;
}

input:focus {
  outline: none;
  border-color: var(--accent-color);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 0 4px rgba(79, 172, 254, 0.1);
}

.btn {
  display: inline-block;
  width: 100%;
  padding: 1rem;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.alert {
  padding: 1rem;
  border-radius: 12px;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  background: rgba(255, 107, 107, 0.15);
  border: 1px solid rgba(255, 107, 107, 0.3);
  color: #ffa5a5;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Portal Specifics */
.portal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.app-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 1.5rem;
  text-decoration: none;
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 140px;
}

.app-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-5px);
  border-color: var(--accent-color);
}

.app-icon {
  font-size: 2.5rem;
  margin-bottom: 0.8rem;
  opacity: 0.9;
}

.app-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.logout-link {
  margin-top: 2rem;
  display: inline-block;
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.3s;
}

.logout-link:hover {
  opacity: 1;
  text-decoration: underline;
}