/*
 * 세이플랜트 뉴스레터 모음집
 * 기존 홈페이지의 글자 크기 체계(index.css의 .content 1.4rem)에 맞춘 버전
 */

.newsletter-archive {
    box-sizing: border-box;
    padding: 4rem 3.6rem 7rem;
    color: #163f52;

    /* 기존 모음집은 본문 크기를 지정하지 않아 약 10px로 표시되었습니다. */
    font-size: 1.4rem;
}

.newsletter-archive * {
    box-sizing: border-box;
}

/* 상단 소개 영역 */
.newsletter-archive-header {
    position: relative;
    overflow: hidden;
    padding: 4.8rem;
    border-radius: 1.8rem;
    background: linear-gradient(135deg, #0f4761, #11516d);
    color: #fff;
}

.newsletter-archive-header::after {
    content: "";
    position: absolute;
    right: -7rem;
    bottom: -11rem;
    width: 24rem;
    height: 24rem;
    border: 3.6rem solid rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    pointer-events: none;
}

.newsletter-eyebrow {
    margin: 0 0 1.2rem;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.18em;
}

.newsletter-archive-header h1 {
    margin: 0 0 1.8rem;
    font-size: clamp(3.6rem, 4vw, 4.8rem);
    line-height: 1.2;
    letter-spacing: -0.03em;
}

.newsletter-archive-header > p:not(.newsletter-eyebrow) {
    position: relative;
    z-index: 1;
    max-width: 72rem;
    margin: 0;
    font-size: 1.5rem;
    line-height: 1.8;
    word-break: keep-all;
}

.newsletter-subscribe-button,
.newsletter-primary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    margin-top: 2.5rem;
    padding: 1.2rem 2rem;
    border-radius: 999px;
    background: #fff;
    color: #11516d;
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.4;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.newsletter-subscribe-button:hover,
.newsletter-primary-button:hover {
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 0.6rem 1.6rem rgba(15, 71, 97, 0.16);
}

/* 최신호 */
.newsletter-latest {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    margin: 2.8rem 0 4.8rem;
    padding: 3rem 3.2rem;
    border: 1px solid #cfe4ee;
    border-radius: 1.6rem;
    background: #f3f9fc;
}

.newsletter-latest > div {
    min-width: 0;
}

.newsletter-latest-label {
    display: inline-block;
    margin-bottom: 0.8rem;
    color: #b25d26;
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: 0.14em;
}

.newsletter-latest h2 {
    margin: 0 0 1.2rem;
    font-size: 2.2rem;
    line-height: 1.35;
    letter-spacing: -0.02em;
}

.newsletter-latest ul {
    margin: 0;
    padding-left: 2.2rem;
    font-size: 1.4rem;
    line-height: 1.8;
}

.newsletter-latest li + li {
    margin-top: 0.3rem;
}

.newsletter-latest .newsletter-primary-button {
    flex: 0 0 auto;
    margin: 0;
    padding: 1.2rem 2.2rem;
    background: #11516d;
    color: #fff;
    font-size: 1.4rem;
}

/* 연도별 목록 */
.newsletter-year-section {
    margin-top: 4.2rem;
}

.newsletter-year-section > h2 {
    margin: 0 0 1.8rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #11516d;
    font-size: 2.8rem;
    line-height: 1.35;
    letter-spacing: -0.03em;
}

.newsletter-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.8rem;
}

.newsletter-card {
    display: grid;
    grid-template-columns: 9rem minmax(0, 1fr);
    min-height: 22rem;
    overflow: hidden;
    border: 1px solid #d9e8ef;
    border-radius: 1.4rem;
    background: #fff;
    box-shadow: 0 0.8rem 2.4rem rgba(15, 71, 97, 0.06);
    transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.newsletter-card:hover {
    transform: translateY(-0.4rem);
    border-color: #9fc8db;
    box-shadow: 0 1.2rem 2.8rem rgba(15, 71, 97, 0.12);
}

.newsletter-card-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #11516d;
    color: #fff;
}

.newsletter-card-date span {
    font-size: 3.6rem;
    font-weight: 800;
    line-height: 1;
}

.newsletter-card-date small {
    margin-top: 0.8rem;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.12em;
}

.newsletter-card-content {
    display: flex;
    flex-direction: column;
    min-width: 0;
    padding: 2.6rem 2.5rem;
}

.newsletter-card-content h3 {
    margin: 0 0 1.4rem;
    font-size: 2rem;
    line-height: 1.4;
    letter-spacing: -0.02em;
    word-break: keep-all;
}

.newsletter-card-content ul {
    margin: 0 0 2rem;
    padding-left: 2rem;
    font-size: 1.35rem;
    line-height: 1.75;
    word-break: keep-all;
}

.newsletter-card-content li + li {
    margin-top: 0.4rem;
}

.newsletter-card-content p {
    margin: 0 0 2rem;
    font-size: 1.4rem;
    line-height: 1.75;
}

.newsletter-card-content a {
    display: inline-flex;
    align-items: center;
    align-self: flex-start;
    margin-top: auto;
    color: #11516d;
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.5;
    text-decoration: none;
}

.newsletter-card-content a:hover {
    text-decoration: underline;
}

.newsletter-empty {
    margin-top: 3rem;
    padding: 3.6rem;
    border: 1px dashed #9ebdcc;
    border-radius: 1.4rem;
    text-align: center;
}

.newsletter-empty h2 {
    font-size: 2.2rem;
}

.newsletter-empty p {
    font-size: 1.4rem;
}

@media (max-width: 900px) {
    .newsletter-archive {
        padding: 2.4rem 1.8rem 5rem;
    }

    .newsletter-archive-header {
        padding: 3.5rem 2.8rem;
    }

    .newsletter-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 620px) {
    .newsletter-archive {
        font-size: 1.4rem;
    }

    .newsletter-archive-header h1 {
        font-size: 3.2rem;
    }

    .newsletter-archive-header > p:not(.newsletter-eyebrow) {
        font-size: 1.4rem;
    }

    .newsletter-latest {
        align-items: flex-start;
        flex-direction: column;
        padding: 2.4rem 2.2rem;
    }

    .newsletter-latest h2 {
        font-size: 2rem;
    }

    .newsletter-latest .newsletter-primary-button {
        width: 100%;
    }

    .newsletter-card {
        grid-template-columns: 7rem minmax(0, 1fr);
        min-height: 20rem;
    }

    .newsletter-card-date span {
        font-size: 3rem;
    }

    .newsletter-card-content {
        padding: 2.2rem 2rem;
    }

    .newsletter-card-content h3 {
        font-size: 1.8rem;
    }

    .newsletter-card-content ul {
        font-size: 1.3rem;
    }
}