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

body {
  font-family: 'Inter', sans-serif;
  background: #0f172a;
  color: #e2e8f0;
  min-height: 100vh;
}

.login-bg {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(59,130,246,0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(139,92,246,0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(16,185,129,0.08) 0%, transparent 50%),
    #0f172a;
  padding: 20px;
}

.login-card {
  background: rgba(30, 41, 59, 0.7);
  backdrop-filter: blur(24px);
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: 24px;
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
  text-align: center;
  box-shadow: 0 25px 60px rgba(0,0,0,0.4);
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-logo {
  font-size: 48px;
  margin-bottom: 12px;
  filter: drop-shadow(0 0 20px rgba(59,130,246,0.3));
}

h1 {
  font-size: 24px;
  font-weight: 700;
  color: #f1f5f9;
  margin-bottom: 4px;
}

.login-subtitle {
  font-size: 14px;
  color: #64748b;
  margin-bottom: 32px;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-weight: 500;
}

.input-group {
  text-align: left;
  margin-bottom: 20px;
}

.input-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: #94a3b8;
  margin-bottom: 6px;
}

.input-group input {
  width: 100%;
  padding: 12px 16px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: 12px;
  color: #e2e8f0;
  font-size: 15px;
  font-family: inherit;
  transition: all 0.2s;
  outline: none;
}

.input-group input:focus {
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.input-group input::placeholder {
  color: #475569;
}

.login-error {
  color: #f87171;
  font-size: 13px;
  min-height: 20px;
  margin-bottom: 8px;
  animation: shake 0.3s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

button[type="submit"] {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  border: none;
  border-radius: 12px;
  color: white;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.3px;
}

button[type="submit"]:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.35);
}

button[type="submit"]:active {
  transform: translateY(0);
}

button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.login-footer {
  margin-top: 24px;
  font-size: 12px;
  color: #475569;
}

@media (max-width: 480px) {
  .login-card {
    padding: 32px 24px;
    border-radius: 16px;
  }
}