:root {
    --admin-background: #f7f6fc;
    --admin-surface: #ffffff;
    --admin-primary: #7968e8;
    --admin-primary-dark: #6452dc;
    --admin-primary-light: #eeeaff;
    --admin-text: #29253b;
    --admin-subtle: #837e93;
    --admin-border: #e9e5f3;
    --admin-danger: #d75e6b;
    --admin-danger-light: #fff0f2;
    --admin-success: #3d9872;
    --admin-success-light: #eaf8f1;
    --admin-shadow: 0 18px 50px rgba(67, 55, 120, 0.12);
}

* {
    box-sizing: border-box;
}

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

body {
    margin: 0;

    background:
        linear-gradient(
            180deg,
            #f4f1ff 0%,
            #f8f7fc 42%,
            #f7f6fc 100%
        );

    color: var(--admin-text);

    font-family:
        Pretendard,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
}

button,
input {
    font: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

.admin-auth-page {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 100%;
    min-height: 100dvh;

    padding:
        28px
        18px
        calc(28px + env(safe-area-inset-bottom));
}

.admin-auth-container {
    width: 100%;
    max-width: 460px;
}

.admin-auth-back {
    display: inline-flex;
    align-items: center;
    gap: 7px;

    margin-bottom: 18px;

    color: var(--admin-subtle);

    font-size: 13px;
    font-weight: 800;

    text-decoration: none;
}

.admin-auth-back__icon {
    font-size: 19px;
    line-height: 1;
}

.admin-auth-card {
    overflow: hidden;

    border:
        1px solid
        rgba(226, 220, 242, 0.95);

    border-radius: 30px;

    background:
        rgba(255, 255, 255, 0.97);

    box-shadow: var(--admin-shadow);

    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.admin-auth-card__hero {
    padding:
        31px
        25px
        25px;

    background:
        linear-gradient(
            145deg,
            #7b6be8,
            #a294f5
        );

    color: #ffffff;

    text-align: center;
}

.admin-auth-lock {
    display: grid;
    place-items: center;

    width: 66px;
    height: 66px;

    margin:
        0
        auto
        17px;

    border:
        1px solid
        rgba(255, 255, 255, 0.28);

    border-radius: 22px;

    background:
        rgba(255, 255, 255, 0.17);

    font-size: 31px;

    box-shadow:
        inset
        0 1px 0
        rgba(255, 255, 255, 0.18);
}

.admin-auth-eyebrow {
    margin:
        0
        0
        7px;

    font-size: 12px;
    font-weight: 900;

    letter-spacing: 0.7px;

    opacity: 0.86;
}

.admin-auth-title {
    margin:
        0
        0
        9px;

    font-size: 27px;
    line-height: 1.25;

    letter-spacing: -0.8px;
}

.admin-auth-description {
    margin: 0;

    font-size: 13px;
    line-height: 1.6;

    opacity: 0.9;
}

.admin-auth-card__body {
    padding:
        25px
        23px
        24px;
}

.admin-auth-alert {
    margin-bottom: 17px;
    padding: 13px 14px;

    border-radius: 14px;

    font-size: 12px;
    font-weight: 750;
    line-height: 1.55;
}

.admin-auth-alert--error {
    border: 1px solid #f0c1c7;
    background: var(--admin-danger-light);
    color: #ad4551;
}

.admin-auth-alert--success {
    border: 1px solid #bce6d2;
    background: var(--admin-success-light);
    color: #287657;
}

.admin-auth-form {
    display: flex;
    flex-direction: column;
    gap: 17px;
}

.admin-auth-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.admin-auth-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;

    font-size: 13px;
    font-weight: 900;
}

.admin-auth-label__hint {
    color: var(--admin-subtle);

    font-size: 10px;
    font-weight: 700;
}

.admin-pin-input {
    width: 100%;
    height: 58px;

    padding:
        0
        16px;

    border:
        2px solid
        var(--admin-border);

    border-radius: 17px;

    outline: none;

    background: #fbfaff;
    color: var(--admin-text);

    font-size: 24px;
    font-weight: 900;

    letter-spacing: 13px;
    text-align: center;

    transition:
        border-color 0.18s ease,
        background-color 0.18s ease,
        box-shadow 0.18s ease;
}

.admin-pin-input::placeholder {
    color: #c4bfd2;
    font-size: 19px;
    letter-spacing: 8px;
}

.admin-pin-input:focus {
    border-color: var(--admin-primary);

    background: #ffffff;

    box-shadow:
        0 0 0 4px
        var(--admin-primary-light);
}

.admin-auth-guide {
    display: flex;
    align-items: flex-start;
    gap: 10px;

    padding: 13px 14px;

    border-radius: 15px;

    background: #f6f3ff;
    color: #655f78;

    font-size: 11px;
    line-height: 1.55;
}

.admin-auth-guide__icon {
    flex: 0 0 auto;

    font-size: 17px;
    line-height: 1.2;
}

.admin-auth-guide strong {
    color: var(--admin-primary);
}

.admin-auth-actions {
    display: grid;
    grid-template-columns: 1fr 1.7fr;
    gap: 10px;

    margin-top: 2px;
}

.admin-auth-button {
    display: flex;
    align-items: center;
    justify-content: center;

    min-height: 52px;

    padding:
        0
        15px;

    border: 0;
    border-radius: 16px;

    font-size: 14px;
    font-weight: 900;

    text-decoration: none;

    cursor: pointer;

    transition:
        transform 0.16s ease,
        opacity 0.16s ease,
        box-shadow 0.16s ease;
}

.admin-auth-button:active {
    transform: scale(0.97);
}

.admin-auth-button--secondary {
    border:
        1px solid
        var(--admin-border);

    background: #ffffff;
    color: var(--admin-subtle);
}

.admin-auth-button--primary {
    background:
        linear-gradient(
            135deg,
            var(--admin-primary),
            #9182f0
        );

    color: #ffffff;

    box-shadow:
        0 10px 24px
        rgba(121, 104, 232, 0.25);
}

.admin-auth-button:disabled {
    cursor: wait;
    opacity: 0.6;
}

.admin-auth-footer {
    margin:
        17px
        0
        0;

    color: #9b96aa;

    font-size: 10px;
    line-height: 1.6;

    text-align: center;
}

.admin-auth-lock-message {
    display: flex;
    align-items: center;
    gap: 8px;

    margin-bottom: 15px;
    padding: 12px 13px;

    border-radius: 14px;

    background: #fff6e9;
    color: #986a22;

    font-size: 12px;
    font-weight: 800;
}

@media (max-width: 390px) {
    .admin-auth-page {
        padding-right: 13px;
        padding-left: 13px;
    }

    .admin-auth-card__hero {
        padding:
            27px
            19px
            22px;
    }

    .admin-auth-card__body {
        padding:
            22px
            18px
            20px;
    }

    .admin-auth-title {
        font-size: 24px;
    }

    .admin-pin-input {
        letter-spacing: 9px;
    }
}