* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    min-height: 100vh;

    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Apple SD Gothic Neo",
        "Pretendard",
        "Noto Sans KR",
        Arial,
        sans-serif;

    color: #18233a;

    background: #f6f9ff;
}

.login-shell {
    min-height: 100vh;

    display: grid;
    grid-template-columns:
        minmax(460px, 1.08fr)
        minmax(430px, .92fr);
}

.visual-panel {
    position: relative;
    overflow: hidden;

    padding: 58px 65px;

    display: flex;
    flex-direction: column;

    color: #fff;

    background:
        radial-gradient(circle at 20% 15%, rgba(71,145,255,.34), transparent 28%),
        radial-gradient(circle at 90% 70%, rgba(93,190,255,.18), transparent 30%),
        linear-gradient(145deg, #111e40 0%, #0c1730 100%);
}

.visual-panel::before {
    content: "";

    position: absolute;

    width: 470px;
    height: 470px;

    right: -170px;
    top: -120px;

    border:
        1px solid rgba(255,255,255,.075);

    border-radius: 50%;
}

.visual-panel::after {
    content: "";

    position: absolute;

    width: 320px;
    height: 320px;

    right: -20px;
    bottom: -150px;

    background:
        radial-gradient(circle, rgba(52,120,246,.17), transparent 65%);

    border-radius: 50%;
}

.visual-logo {
    position: relative;
    z-index: 2;

    display: flex;
    align-items: center;
    gap: 14px;
}

.visual-mark {
    width: 50px;
    height: 50px;

    display: grid;
    place-items: center;

    border:
        1px solid rgba(255,255,255,.12);

    border-radius: 16px;

    color: #fff;

    background:
        linear-gradient(145deg, #3478f6, #6fc4ff);

    box-shadow:
        0 17px 40px rgba(34,100,222,.28);

    font-size: 21px;
    font-weight: 900;
}

.visual-name {
    font-size: 14px;
    font-weight: 900;
    letter-spacing: .12em;
}

.visual-sub {
    margin-top: 5px;

    color: #7890b4;

    font-size: 8px;
    font-weight: 750;
    letter-spacing: .13em;
}

.visual-copy {
    position: relative;
    z-index: 2;

    margin: auto 0;
    max-width: 620px;
}

.visual-label {
    margin-bottom: 22px;

    color: #6faeff;

    font-size: 10px;
    font-weight: 900;
    letter-spacing: .14em;
}

.visual-copy h1 {
    margin: 0;

    font-size: clamp(35px, 4vw, 58px);
    font-weight: 850;
    line-height: 1.22;
    letter-spacing: -.055em;
}

.visual-copy p {
    max-width: 510px;
    margin: 24px 0 0;

    color: #91a3bf;

    font-size: 14px;
    line-height: 1.8;
}

.visual-status {
    position: relative;
    z-index: 2;

    display: flex;
    gap: 18px;

    color: #7285a5;

    font-size: 9px;
    font-weight: 750;
}

.visual-status span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.visual-status b {
    width: 6px;
    height: 6px;

    border-radius: 50%;
    background: #48c9a1;

    box-shadow:
        0 0 0 4px rgba(72,201,161,.08);
}

.login-panel {
    padding: 45px;

    display: grid;
    place-items: center;

    background:
        radial-gradient(circle at 80% 10%, rgba(161,213,255,.28), transparent 27%),
        linear-gradient(145deg, #fbfdff, #f3f8ff);
}

.login-card {
    width: min(440px, 100%);

    padding: 39px;

    background:
        rgba(255,255,255,.88);

    border:
        1px solid rgba(255,255,255,.95);

    border-radius: 30px;

    box-shadow:
        0 34px 90px rgba(37,65,116,.15);

    backdrop-filter: blur(24px);
}

.mobile-brand {
    display: none;
}

.secure-icon {
    width: 48px;
    height: 48px;

    margin-bottom: 21px;

    display: grid;
    place-items: center;

    color: #2e73e4;
    background: #ebf3ff;

    border-radius: 15px;

    font-size: 17px;
    font-weight: 900;
}

.login-eyebrow {
    color: #3778df;

    font-size: 9px;
    font-weight: 900;
    letter-spacing: .14em;
}

h2 {
    margin: 8px 0 0;

    font-size: 29px;
    font-weight: 850;
    letter-spacing: -.045em;
}

.login-description {
    margin: 8px 0 30px;

    color: #8b97a9;

    font-size: 12px;
}

label {
    display: block;
    margin-bottom: 19px;

    color: #67758a;

    font-size: 11px;
    font-weight: 800;
}

input {
    width: 100%;
    min-height: 49px;

    margin-top: 8px;
    padding: 0 15px;

    border:
        1px solid #dfe7f1;

    border-radius: 14px;

    outline: none;

    color: #172238;
    background: #fbfdff;

    font-size: 14px;

    transition:
        border .15s ease,
        box-shadow .15s ease;
}

input:focus {
    border-color: #82b7ff;

    box-shadow:
        0 0 0 4px rgba(52,120,246,.07);
}

.password-wrap {
    position: relative;
}

.password-wrap input {
    padding-right: 65px;
}

.password-wrap button {
    position: absolute;

    right: 9px;
    top: 16px;

    padding: 8px;

    border: 0;

    color: #6580a6;
    background: transparent;

    cursor: pointer;

    font-size: 10px;
    font-weight: 850;
}

.login-button {
    width: 100%;
    min-height: 51px;

    margin-top: 4px;
    padding: 0 18px;

    display: flex;
    align-items: center;
    justify-content: space-between;

    border: 0;
    border-radius: 15px;

    color: #fff;

    background:
        linear-gradient(135deg, #3478f6, #69bafa);

    box-shadow:
        0 14px 30px rgba(52,120,246,.23);

    cursor: pointer;

    font-weight: 850;
}

.login-button span {
    font-size: 17px;
}

.login-error {
    margin: 0 0 17px;
    padding: 11px 13px;

    color: #bc4551;
    background: #fff0f2;

    border-radius: 12px;

    font-size: 11px;
}

.security-note {
    margin-top: 24px;

    text-align: center;

    color: #9ba6b6;

    font-size: 10px;
}

.lock {
    color: #48c9a1;
}

@media (max-width: 880px) {

    .login-shell {
        grid-template-columns: 1fr;
    }

    .visual-panel {
        display: none;
    }

    .login-panel {
        min-height: 100vh;
        padding: 25px;
    }

    .mobile-brand {
        margin-bottom: 27px;

        display: flex;
        align-items: center;
        gap: 10px;

        color: #2e6dd3;

        font-size: 12px;
        letter-spacing: .08em;
    }

    .mobile-mark {
        width: 34px;
        height: 34px;

        display: grid;
        place-items: center;

        color: #fff;
        background:
            linear-gradient(145deg, #3478f6, #69bafa);

        border-radius: 11px;

        font-weight: 900;
    }

}