@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&display=swap');

:root {
    --primary-color: #007bff;
    --primary-hover-color: #0056b3;
    --background-color: #f0f2f5;
    --container-background: #ffffff;
    --text-color: #333;
    --label-color: #555;
    --border-color: #ddd;
    --error-color: #dc3545;
    --font-family: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

.login-box {
    background-color: var(--container-background);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
}

h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 10px;
}

p {
    font-size: 14px;
    color: var(--label-color);
    margin-bottom: 30px;
}

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

.input-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--label-color);
    margin-bottom: 8px;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    font-family: var(--font-family);
    transition: border-color 0.3s, box-shadow 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

button {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    font-family: var(--font-family);
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: var(--primary-hover-color);
}

.error-message {
    color: var(--error-color);
    font-size: 14px;
    margin-top: 15px;
    height: 20px; 
    visibility: hidden;
}

.error-message.show {
    visibility: visible;
}