:root {
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --bg-gradient-start: #0f172a;
  --bg-gradient-end: #1e1b4b;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --error-color: #ef4444;
  --success-color: #10b981;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
  color: var(--text-primary);
  overflow: hidden;
}

.login-container {
  width: 100%;
  max-width: 400px;
  padding: 2.5rem;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  transform: translateY(20px);
  opacity: 0;
  animation: slideUpFade 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(to right, #818cf8, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.login-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.form-group {
  margin-bottom: 1.5rem;
  position: relative;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.3s;
}

.form-control {
  width: 100%;
  padding: 0.85rem 1rem;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
  transition: all 0.3s ease;
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
  background: rgba(0, 0, 0, 0.3);
}

.form-group:focus-within label {
  color: var(--primary-color);
}

.btn-primary {
  width: 100%;
  padding: 0.85rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Status message */
.alert {
  padding: 0.85rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  text-align: center;
  display: none;
}

.alert.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
}

/* Animations */
@keyframes slideUpFade {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shake {
  10%, 90% { transform: translate3d(-1px, 0, 0); }
  20%, 80% { transform: translate3d(2px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
  40%, 60% { transform: translate3d(4px, 0, 0); }
}

/* Background floating elements */
.blob {
  position: absolute;
  filter: blur(60px);
  z-index: -1;
  opacity: 0.6;
}

.blob-1 {
  width: 300px;
  height: 300px;
  background: #4f46e5;
  top: -100px;
  left: -100px;
  border-radius: 50%;
  animation: float 8s infinite alternate ease-in-out;
}

.blob-2 {
  width: 400px;
  height: 400px;
  background: #c084fc;
  bottom: -150px;
  right: -150px;
  border-radius: 50%;
  animation: float 10s infinite alternate-reverse ease-in-out;
}

@keyframes float {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(30px, 30px) rotate(10deg); }
}