/* ── Page Background ── */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;

    /* 베이스: 짙은 네이비 → 다크 슬레이트 대각 그라디언트 */
    background-color: #001a5c;
    background-image:
        /* 격자 세로선 */
            repeating-linear-gradient(
                    90deg,
                    rgba(255, 255, 255, 0.03) 0px,
                    rgba(255, 255, 255, 0.03) 1px,
                    transparent          1px,
                    transparent          60px
            ),
                /* 격자 가로선 */
            repeating-linear-gradient(
                    0deg,
                    rgba(255, 255, 255, 0.03) 0px,
                    rgba(255, 255, 255, 0.03) 1px,
                    transparent          1px,
                    transparent          60px
            ),
                /* 우상단 포인트 글로우 */
            radial-gradient(ellipse 60% 50% at 90% 5%,  rgba(45, 85, 200, 0.55) 0%, transparent 70%),
                /* 좌하단 포인트 글로우 */
            radial-gradient(ellipse 50% 45% at 5%  95%, rgba(22, 69, 184, 0.45) 0%, transparent 65%),
                /* 중앙 광원 */
            radial-gradient(ellipse 80% 60% at 50% 50%, rgba(0, 47, 143, 0.70) 0%, transparent 80%),
                /* 사선 밴드 */
            linear-gradient(
                    125deg,
                    #001040 0%,
                    #002080 40%,
                    #001860 70%,
                    #000d38 100%
            );
    background-attachment: fixed;
}


/* ── Card Wrapper ── */
.login-wrapper {
    width: 100%;
    max-width: 28rem;
}

/* ── Card ── */
.login-card {
    background-color: var(--color-surface-container-lowest);
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.30);
    border: 1px solid rgba(196, 197, 214, 0.30);
}

@media (min-width: 768px) {
    .login-card { padding: 2.5rem; }
}

/* ── Card Header ── */
.login-header {
    margin-bottom: 2.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.login-header__logo {
    height: 3rem;
    width: auto;
    margin-bottom: 1.5rem;
}

.login-header__title {
    font-family: var(--font-headline);
    font-size: 1.875rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.025em;
}

.login-header__subtitle {
    color: var(--color-on-surface-variant);
    font-weight: 500;
    font-size: 0.875rem;
}

/* ── Form ── */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* ── Field ── */
.login-field {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.login-field__label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-outline);
}

.login-field__input-wrap {
    position: relative;
}

.login-field__input {
    width: 100%;
    padding: 0.875rem 3rem 0.875rem 1rem;
    background-color: var(--color-surface-container-low);
    border: none;
    border-bottom: 2px solid var(--color-outline-variant);
    outline: none;
    font-size: 0.875rem;
    font-family: var(--font-body);
    color: var(--color-on-surface);
    transition: border-color 0.3s, background-color 0.3s;
}

.login-field__input::placeholder {
    color: rgba(116, 118, 133, 0.60);
}

.login-field__input:focus {
    border-bottom-color: var(--color-primary);
    background-color: var(--color-surface-container-lowest);
}

.login-field__icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-outline-variant);
    font-size: 1.25rem;
    pointer-events: none;
    user-select: none;
}

/* ── Options Row ── */
.login-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ── Remember Me ── */
.login-remember {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.login-remember__checkbox-wrap {
    position: relative;
    width: 1rem;
    height: 1rem;
}

.login-remember__input {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

.login-remember__box {
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    transition: background-color 0.2s, border-color 0.2s;
}

.login-remember__check {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 10px;
    font-weight: 700;
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
}

.login-remember__input:checked ~ .login-remember__box {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.login-remember__input:checked ~ .login-remember__check {
    opacity: 1;
}

.login-remember__text {
    margin-left: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-on-surface-variant);
    transition: color 0.2s;
}

.login-remember:hover .login-remember__text {
    color: var(--color-primary);
}

/* ── Forgot Password ── */
.login-forgot {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-color: rgba(22, 69, 184, 0.30);
    text-underline-offset: 4px;
    transition: text-decoration-color 0.2s;
}

.login-forgot:hover {
    text-decoration-color: var(--color-primary);
}

/* ── Submit Button ── */
.login-submit {
    width: 100%;
    padding: 1rem;
    background-color: var(--color-primary);
    color: var(--color-on-primary);
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1rem;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    box-shadow: 0 10px 15px -3px rgba(0, 47, 143, 0.20);
    transition: background-color 0.2s, transform 0.1s;
}

.login-submit:hover  { background-color: var(--color-primary-container); }
.login-submit:active { transform: scale(0.98); }


/* ── Register Section ── */
.login-register {
    margin-top: 2rem;
}

.login-register__divider {
    position: relative;
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.login-register__divider::before,
.login-register__divider::after {
    content: '';
    flex: 1;
    border-top: 1px solid rgba(196, 197, 214, 0.30);
}

.login-register__label {
    padding: 0 0.875rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-outline);
    white-space: nowrap;
}

.login-register__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--color-surface-container-low);
    border: 1px solid rgba(196, 197, 214, 0.50);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}

.login-register__btn:hover {
    background-color: var(--color-surface-container-high);
    border-color: var(--color-primary);
}

.login-register__btn-icon {
    font-size: 1.125rem;
    line-height: 1;
}

/* ================================================
   Mobile — 480px 이하
   ================================================ */
@media (max-width: 480px) {

    /* 페이지: 패딩 최소화, 세로 정렬 위쪽으로 */
    .login-page {
        align-items: flex-start;
        padding: calc(106px + 1rem) 0.75rem 2rem;
        /* background-attachment: fixed 는 모바일 Safari에서 버벅임 발생 */
        background-attachment: scroll;
    }

    /* 래퍼: 전체 너비 */
    .login-wrapper {
        max-width: 100%;
    }

    /* 카드: 둥글기·그림자 축소, 패딩 줄임 */
    .login-card {
        padding: 1.5rem 1.25rem;
        border-radius: var(--radius-lg);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.20);
    }

    /* 헤더: 로고·타이틀 축소 */
    .login-header {
        margin-bottom: 1.75rem;
    }

    .login-header__logo {
        height: 2.25rem;
        margin-bottom: 1rem;
    }

    .login-header__title {
        font-size: 1.5rem;
    }

    .login-header__subtitle {
        font-size: 0.8125rem;
    }

    /* 폼 gap 축소 */
    .login-form {
        gap: 1.125rem;
    }

    /* 입력창: 터치 타깃 확보를 위해 패딩 확대 */
    .login-field__input {
        font-size: 1rem;          /* iOS 자동 줌 방지 (16px 이상) */
        padding: 0.9375rem 3rem 0.9375rem 0.875rem;
    }

    /* 체크박스·링크 행: 터치 여백 확보 */
    .login-options {
        gap: 0.5rem;
    }

    .login-remember {
        min-height: 2.75rem;      /* 44px 터치 타깃 */
    }

    .login-remember__checkbox-wrap {
        width: 1.125rem;
        height: 1.125rem;
    }

    .login-remember__box {
        width: 1.125rem;
        height: 1.125rem;
    }

    .login-remember__text {
        font-size: 0.8125rem;
    }

    .login-forgot {
        font-size: 0.8125rem;
        min-height: 2.75rem;
        display: flex;
        align-items: center;
    }

    /* 로그인 버튼: 터치 타깃 확대 */
    .login-submit {
        padding: 1rem;
        font-size: 1rem;
        border-radius: var(--radius-lg);
    }

    /* 회원가입 버튼 */
    .login-register {
        margin-top: 1.5rem;
    }

    .login-register__btn {
        padding: 0.9375rem 1rem;  /* 터치 타깃 확보 */
        font-size: 0.9375rem;
    }

    .login-register__btn-icon {
        font-size: 1.25rem;
    }

    /* 푸터 */
    .login-footer {
        margin-top: 1.5rem;
    }

    .login-footer__links {
        gap: 0.75rem;
        flex-wrap: wrap;
    }

    /* 링크·버튼 전체 tap highlight 제거 */
    .login-forgot,
    .login-submit,
    .login-register__btn,
    .login-footer__link {
        -webkit-tap-highlight-color: transparent;
    }
}