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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    padding: 20px;
    width: 100%;
    max-width: 400px;
}

.login-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.login-header {
    background: linear-gradient(to right, #1e3a8a, #1e40af);
    color: white;
    padding: 40px 20px;
    text-align: center;
}

.login-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.login-header h1 {
    font-size: 24px;
    margin-bottom: 5px;
    font-weight: 600;
}

.login-header p {
    opacity: 0.9;
    font-size: 14px;
}

.login-form {
    padding: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: #111827;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #1e40af;
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.password-input {
    position: relative;
    display: flex;
}

.password-input input {
    flex: 1;
}

.toggle-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(to right, #1e3a8a, #1e40af);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.login-btn:hover {
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
    transform: translateY(-2px);
}

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

.demo-credentials {
    background-color: #f0f4ff;
    padding: 15px;
    border-radius: 6px;
    font-size: 13px;
    color: #1e3a8a;
    margin-top: 20px;
    border-left: 4px solid #1e40af;
}

.demo-credentials p {
    margin: 5px 0;
}

.demo-credentials strong {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.error-message {
    background-color: #fee2e2;
    color: #991b1b;
    padding: 12px;
    border-radius: 6px;
    margin-top: 20px;
    font-size: 14px;
    border-left: 4px solid #ef4444;
    display: none;
}

.error-message:not(:empty) {
    display: block;
}

@media (max-width: 480px) {
    .login-container {
        padding: 10px;
    }

    .login-header {
        padding: 30px 20px;
    }

    .login-form {
        padding: 20px;
    }
}