* {
    box-sizing: border-box;
    font-family: 'Segoe UI', sans-serif;
}

body {
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;

    /* 배경 그라데이션 */
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.container {
    width: 300px;
    padding: 30px;

    /* 글래스 느낌 */
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);

    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);

    text-align: center;
    color: white;
}

h2 {
    text-align: center;
    margin-bottom: 25px;
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
}

.input-group input {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid #ccc;
    transition: 0.2s;
}

.input-group input:focus {
    border-color: #4facfe;
    outline: none;
}

.btn {
    width: 100%;
    padding: 12px;
    border: none;
    background: #4facfe;
    color: white;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: 0.2s;
}

.btn:hover {
    background: #3a8de0;
    transform: scale(1.03);
}

.footer {
    text-align: center;
    margin-top: 15px;
    font-size: 13px;
}

.footer a {
    color: #4facfe;
    text-decoration: none;
}

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