:root {
    --primary-color: #435EBE;
    --text-color: #607080;
    --border-color: #E0E0E0;
    --white-color: #FFFFFF;
    --error-color: #d9534f;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, 'Helvetica Neue', 'Segoe UI', 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', sans-serif;
    background-color: #f4f7f6;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem 0;
}

.auth-container {
    background-color: var(--white-color);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    width: 100%;
    max-width: 420px;
    text-align: center;
}

.auth-title {
    font-size: 2rem;
    font-weight: 700;
    color: #25396f;
    margin-bottom: 30px;
}

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

.form-control {
    display: block;
    width: 100%;
    height: 50px;
    padding: 10px 15px;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--white-color);
    background-clip: padding-box;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    transition: border-color .15s ease-in-out,box-shadow .15s ease-in-out;
}

.form-control:focus {
    color: var(--text-color);
    background-color: var(--white-color);
    border-color: var(--primary-color);
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(67, 94, 190, 0.25);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    width: 100%;
    padding: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 5px;
}

.auth-link {
    margin-top: 20px;
    font-size: 0.9rem;
}

.auth-link a {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
}

.error-message {
    background-color: rgba(217, 83, 79, 0.1);
    color: var(--error-color);
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border: 1px solid rgba(217, 83, 79, 0.2);
}

.success-message {
    background-color: rgba(40, 167, 69, 0.1);
    color: #28a745;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border: 1px solid rgba(40, 167, 69, 0.2);
}