/* ========================================
   Clean & Modern Login Page Design
   ======================================== */

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

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    background: #f8f9fa;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 440px;
}

.login-box {
    background: #ffffff;
    border-radius: 16px;
    padding: 48px 40px;
    box-shadow:
            0 1px 3px rgba(0, 0, 0, 0.05),
            0 10px 25px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
}

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.login-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: #212529;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.login-header p {
    font-size: 15px;
    color: #6c757d;
    font-weight: 400;
}

.error-message {
    background: #fff5f5;
    color: #c92a2a;
    padding: 14px 18px;
    border-radius: 8px;
    margin-bottom: 24px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid #ffe3e3;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #495057;
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    border: 1.5px solid #dee2e6;
    border-radius: 8px;
    background: #ffffff;
    transition: all 0.2s ease;
    font-family: inherit;
    color: #212529;
}

.form-control:hover {
    border-color: #adb5bd;
}

.form-control:focus {
    outline: none;
    border-color: #F5DF02;
    box-shadow: 0 0 0 3px rgba(245, 223, 2, 0.1);
}

.form-control::placeholder {
    color: #adb5bd;
}

.btn-login {
    width: 100%;
    padding: 13px 24px;
    font-size: 15px;
    font-weight: 600;
    color: #111827;
    background: #F5DF02;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 8px;
}

.btn-login:hover {
    background: #CA8A04;
    color: #ffffff;
}

.btn-login:active {
    background: #B45309;
    color: #ffffff;
}

.btn-login:disabled {
    background: #adb5bd;
    cursor: not-allowed;
}

/* 반응형 디자인 */
@media (max-width: 480px) {
    .login-box {
        padding: 40px 32px;
        border-radius: 12px;
    }

    .login-header h1 {
        font-size: 24px;
    }

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