:root {
  --primary-blue: #003366;
  --secondary-blue: #0055ff;
  --accent-gold: #ffd700;
  --bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  --card-bg: rgba(255, 255, 255, 0.9);
  --text-dark: #1a1a1a;
  --text-muted: #555555;
  --input-bg: #ffffff;
  --input-border: #e1e4e8;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --radius-lg: 16px;
  --radius-md: 10px;
}

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

body {
  font-family: 'Outfit', 'Inter', sans-serif;
  background: var(--bg-gradient);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.login-container {
  width: 100%;
  max-width: 440px;
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.3);
  animation: fadeIn 0.6s ease-out;
}

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

.login-header {
  text-align: center;
  margin-bottom: 35px;
}

.login-logo {
  width: 90px;
  height: auto;
  margin-bottom: 20px;
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.1));
}

.login-header h1 {
  font-size: 28px;
  color: var(--primary-blue);
  margin-bottom: 12px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.login-header p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.5;
}

#voucher-login-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 14px;
  color: var(--text-dark);
  font-weight: 600;
  margin-left: 2px;
}

#voucher-login-form input {
  padding: 14px 16px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-md);
  font-size: 15px;
  color: var(--text-dark);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-sm);
}

#voucher-login-form input:focus {
  outline: none;
  border-color: var(--secondary-blue);
  box-shadow: 0 0 0 4px rgba(0, 85, 255, 0.1);
  transform: translateY(-1px);
}

#voucher-login-form button {
  margin-top: 10px;
  padding: 14px;
  background: linear-gradient(to right, var(--primary-blue), var(--secondary-blue));
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 51, 102, 0.2);
}

#voucher-login-form button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 51, 102, 0.3);
  filter: brightness(1.1);
}

#voucher-login-form button:active {
  transform: translateY(0);
}

#voucher-login-form button:disabled {
  background: #ccc;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

#error-message {
  font-size: 14px;
  color: #e53e3e;
  text-align: center;
  background: #fff5f5;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #feb2b2;
}

.login-footer {
  margin-top: 30px;
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(0,0,0,0.05);
}

.login-footer p {
  font-size: 14px;
  color: var(--text-muted);
}

.login-footer a {
  color: var(--secondary-blue);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

.login-footer a:hover {
  text-decoration: underline;
}

/* Base Responsive */
@media (max-width: 480px) {
  .login-container {
    padding: 30px 20px;
  }
}