/* ========== Home page — modern academic profile ========== */
:root {
    --home-bg: #f4f6fb;
    --home-surface: #ffffff;
    --home-text: #0f172a;
    --home-muted: #64748b;
    --home-accent: #1e3a5f;
    --home-accent-soft: #2563eb;
    --home-border: rgba(15, 23, 42, 0.08);
    --home-radius-lg: 20px;
    --home-radius-xl: 28px;
    --home-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 12px 40px rgba(15, 23, 42, 0.08);
    --home-shadow-hover: 0 24px 48px rgba(15, 23, 42, 0.12);
    --home-font: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI",
        Roboto, "Noto Sans KR", sans-serif;
}


.page-home {
    font-family: var(--home-font);
    background-color: var(--home-bg);
    background-image:
        radial-gradient(ellipse 120% 80% at 100% -20%, rgba(37, 99, 235, 0.12), transparent 50%),
        radial-gradient(ellipse 80% 60% at 0% 100%, rgba(30, 58, 95, 0.08), transparent 45%);
    background-attachment: fixed;
    color: var(--home-text);
    min-height: 100vh;
}

/* ---------- Hero ---------- */
.home-main {
    padding-bottom: 4rem;
}

.hero-section {
    max-width: 1120px;
    margin: 0 auto;
    padding: 2.5rem 1.25rem 3rem;
}

.hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 3.5rem);
    align-items: center;
}

.hero-photo-wrap {
    position: relative;
    justify-self: center;
}

.hero-photo-wrap::before {
    content: "";
    position: absolute;
    inset: -4px;
    border-radius: var(--home-radius-xl);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.35), rgba(30, 58, 95, 0.15));
    z-index: 0;
    opacity: 0.9;
}

.hero-photo {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 320px;
    border-radius: calc(var(--home-radius-xl) - 4px);
    object-fit: cover;
    aspect-ratio: 4 / 5;
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.35) inset,
        0 18px 42px rgba(15, 23, 42, 0.12);
    border: 3px solid rgba(255, 255, 255, 0.95);
    transition: transform 0.45s cubic-bezier(0.23, 1, 0.32, 1);
}

.hero-photo:hover {
    transform: translateY(-4px) scale(1.01);
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--home-accent-soft);
    margin-bottom: 1rem;
}

.hero-eyebrow::before {
    content: "";
    width: 28px;
    height: 2px;
    background: linear-gradient(90deg, var(--home-accent-soft), transparent);
    border-radius: 2px;
}

.hero-title {
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.035em;
    margin-bottom: 1rem;
    color: var(--home-text);
    background: none;
    -webkit-text-fill-color: unset;
    background-clip: unset;
}

.hero-title span {
    background: linear-gradient(105deg, var(--home-accent) 0%, var(--home-accent-soft) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.0625rem;
    line-height: 1.65;
    color: var(--home-muted);
    margin-bottom: 1.5rem;
    font-weight: 500;
    max-width: 38rem;
}

.hero-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1.25rem 0 1.75rem;
}

.keyword-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.8125rem;
    color: var(--home-accent);
    background: linear-gradient(165deg, #ffffff 0%, #f4f7fc 100%);
    border: 1px solid rgba(37, 99, 235, 0.14);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.9) inset,
        0 2px 8px rgba(15, 23, 42, 0.06);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.keyword-chip::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--home-accent-soft), var(--home-accent));
    flex-shrink: 0;
    opacity: 0.85;
}

.keyword-chip:hover {
    border-color: rgba(37, 99, 235, 0.35);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.95) inset,
        0 6px 20px rgba(37, 99, 235, 0.14);
    transform: translateY(-2px);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 0 0 2rem;
}

.btn-hero {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.55rem;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.9375rem;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
    border: none;
}

.btn-hero:focus-visible {
    outline: 2px solid var(--home-accent-soft);
    outline-offset: 3px;
}

.btn-hero.primary {
    background: linear-gradient(145deg, #244a7a 0%, var(--home-accent-soft) 48%, #1d4ed8 100%);
    color: #fff;
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.2) inset,
        0 6px 22px rgba(30, 58, 95, 0.38);
}

.btn-hero.primary:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.25) inset,
        0 10px 32px rgba(30, 58, 95, 0.45);
}

.btn-hero.secondary {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    color: var(--home-text);
    border: 1px solid rgba(15, 23, 42, 0.12);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.05);
}

.btn-hero.secondary:hover {
    border-color: rgba(37, 99, 235, 0.35);
    background: #fff;
    color: var(--home-accent);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(37, 99, 235, 0.12);
}

/* 히어로 하단: 논문 페이지 · CV PDF — 2열 액션 타일 */
.hero-quicklinks {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 0.25rem;
}

.hero-quicklink {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.1rem 1.15rem 1.1rem 1.05rem;
    text-decoration: none;
    color: inherit;
    border-radius: 18px;
    border: 1px solid rgba(15, 23, 42, 0.1);
    background: linear-gradient(165deg, #ffffff 0%, #f4f7fd 55%, #eef2fb 100%);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.9) inset,
        0 10px 28px rgba(15, 23, 42, 0.07);
    transition:
        transform 0.22s ease,
        box-shadow 0.22s ease,
        border-color 0.22s ease,
        background 0.22s ease;
    position: relative;
    overflow: hidden;
}

.hero-quicklink::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 5px;
    background: linear-gradient(180deg, var(--home-accent-soft), var(--home-accent));
    border-radius: 18px 0 0 18px;
}

.hero-quicklink:hover {
    color: inherit;
    transform: translateY(-3px);
    border-color: rgba(37, 99, 235, 0.28);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.95) inset,
        0 16px 36px rgba(30, 58, 95, 0.14);
}

.hero-quicklink:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.45);
    outline-offset: 3px;
}

button.hero-quicklink {
    appearance: none;
    -webkit-appearance: none;
    width: 100%;
    margin: 0;
    font: inherit;
    cursor: pointer;
    text-align: left;
    color: inherit;
}

.hero-quicklink-icon {
    flex-shrink: 0;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    font-size: 1.35rem;
    color: var(--home-accent-soft);
    background: linear-gradient(145deg, rgba(37, 99, 235, 0.18), rgba(30, 58, 95, 0.07));
    border: 1px solid rgba(37, 99, 235, 0.12);
}

.hero-quicklink-icon--cv {
    color: #0f766e;
    background: linear-gradient(145deg, rgba(13, 148, 136, 0.18), rgba(15, 118, 110, 0.06));
    border-color: rgba(13, 148, 136, 0.18);
}

.hero-quicklink--cv::before {
    background: linear-gradient(180deg, #14b8a6, #0d9488);
}

.hero-quicklink-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding-left: 0.15rem;
}

.hero-quicklink-title {
    font-size: 1.02rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--home-text);
    line-height: 1.25;
}

.hero-quicklink-desc {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--home-muted);
    line-height: 1.35;
}

.hero-quicklink-arrow {
    flex-shrink: 0;
    width: 2.35rem;
    height: 2.35rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.05rem;
    color: var(--home-accent-soft);
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(15, 23, 42, 0.08);
    transition: transform 0.2s ease, background 0.2s ease;
}

.hero-quicklink--cv .hero-quicklink-arrow {
    color: #0f766e;
}

.hero-quicklink:hover .hero-quicklink-arrow {
    transform: translateX(3px);
    background: #fff;
}

/* ---------- Explore / poster grid ---------- */
.home-explore {
    padding: 0 1.25rem 4rem;
}

.home-explore-inner {
    max-width: 1120px;
    margin: 0 auto;
}

.home-explore-head {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--home-border);
}

.home-explore-kicker {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--home-accent-soft);
    margin-bottom: 0.35rem;
}

.home-explore-title {
    font-size: clamp(1.35rem, 3vw, 1.75rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--home-text);
    margin: 0;
}

.home-explore-desc {
    margin: 0.35rem 0 0;
    font-size: 0.9375rem;
    color: var(--home-muted);
}

.poster-grid .row {
    margin: 0;
}

.poster-card {
    position: relative;
    isolation: isolate;
    cursor: pointer;
    color: inherit;
    border-radius: calc(var(--home-radius-lg) + 2px);
    overflow: hidden;
    margin-bottom: 0;
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.65) inset,
        0 10px 36px rgba(15, 23, 42, 0.08),
        0 2px 8px rgba(15, 23, 42, 0.04);
    transition:
        transform 0.35s cubic-bezier(0.23, 1, 0.32, 1),
        box-shadow 0.35s ease,
        border-color 0.25s ease;
    background: linear-gradient(180deg, #ffffff 0%, #f6f8fc 55%, #eef2f9 100%);
    height: 100%;
    min-height: 280px;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(15, 23, 42, 0.07);
}

.poster-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(
        90deg,
        var(--home-accent) 0%,
        var(--home-accent-soft) 55%,
        rgba(37, 99, 235, 0.35) 100%
    );
    z-index: 3;
    opacity: 0.95;
    pointer-events: none;
}

.poster-card:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.45);
    outline-offset: 4px;
}

.poster-card:hover {
    transform: translateY(-8px);
    border-color: rgba(37, 99, 235, 0.22);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.85) inset,
        0 22px 48px rgba(30, 58, 95, 0.14),
        0 8px 16px rgba(15, 23, 42, 0.06);
}

.poster-image-wrap {
    height: 164px;
    overflow: hidden;
    margin: 0.65rem 0.65rem 0;
    border-radius: 14px;
    background:
        radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.5), transparent 45%),
        linear-gradient(155deg, #dfe8f7 0%, #e8eef8 40%, #dce4f2 100%);
    border: 1px solid rgba(255, 255, 255, 0.65);
    box-shadow: 0 4px 14px rgba(15, 23, 42, 0.06) inset;
}

.poster-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.poster-card:hover .poster-image {
    transform: scale(1.06);
}

.poster-content {
    padding: 1.15rem 1.35rem 1.4rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.poster-title {
    color: var(--home-text);
    font-weight: 800;
    font-size: 1.02rem;
    margin: 0;
    line-height: 1.3;
    letter-spacing: -0.025em;
}

.poster-meta {
    margin-top: 0.45rem;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--home-accent-soft);
}

.poster-overlay {
    position: absolute;
    inset: 0;
    z-index: 2;
    background: linear-gradient(
        160deg,
        rgba(15, 23, 42, 0.82) 0%,
        rgba(30, 58, 95, 0.55) 100%
    );
    opacity: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

/* 오버레이 자식이 포인터를 가로채지 않도록 — 카드 전체가 한 번의 링크로 동작 */
.poster-overlay * {
    pointer-events: none;
}

.poster-card:hover .poster-overlay {
    opacity: 1;
}

.poster-arrow {
    width: 52px;
    height: 52px;
    background: linear-gradient(145deg, #ffffff, #f0f4ff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--home-accent);
    border: 1px solid rgba(255, 255, 255, 0.9);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 1) inset,
        0 10px 28px rgba(15, 23, 42, 0.22);
}

.page-home .footer {
    background: var(--home-surface);
    border-top: 1px solid var(--home-border);
    margin-top: 0;
}

/* ---------- CV modal (home) ---------- */
.cv-modal {
    border-radius: var(--home-radius-lg);
    border: 1px solid var(--home-border);
    box-shadow: var(--home-shadow-hover);
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.98);
    max-height: 90vh;
}

/* Connect modal (home hero) */
.connect-modal {
    border-radius: var(--home-radius-lg);
    border: 1px solid var(--home-border);
    box-shadow: var(--home-shadow-hover);
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.98);
    overflow: hidden;
}

.connect-modal-lead {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--home-muted);
    margin-bottom: 1rem;
    line-height: 1.45;
}

.connect-modal-list {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.connect-modal-item {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.9rem 1rem 0.9rem 1.05rem;
    text-decoration: none;
    color: inherit;
    border-radius: 14px;
    border: 1px solid rgba(15, 23, 42, 0.1);
    background: linear-gradient(165deg, #ffffff 0%, #f4f7fd 55%, #eef2fb 100%);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.9) inset,
        0 6px 18px rgba(15, 23, 42, 0.06);
    transition:
        transform 0.2s ease,
        border-color 0.2s ease,
        box-shadow 0.2s ease;
    position: relative;
    overflow: hidden;
}

.connect-modal-item:visited {
    color: inherit;
}

.connect-modal-item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--home-accent-soft), var(--home-accent));
    border-radius: 14px 0 0 14px;
}

.connect-modal-item:hover {
    color: inherit;
    transform: translateY(-2px);
    border-color: rgba(37, 99, 235, 0.28);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.95) inset,
        0 12px 28px rgba(30, 58, 95, 0.12);
}

.connect-modal-item:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.45);
    outline-offset: 2px;
}

.connect-modal-item-icon {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-size: 1.15rem;
    color: var(--home-accent-soft);
    background: linear-gradient(145deg, rgba(37, 99, 235, 0.18), rgba(30, 58, 95, 0.07));
    border: 1px solid rgba(37, 99, 235, 0.12);
}

.connect-modal-item-main {
    flex: 1;
    min-width: 0;
}

.connect-modal-item-title {
    font-weight: 800;
    font-size: 0.98rem;
    color: var(--home-text);
    letter-spacing: -0.02em;
}

.connect-modal-item-go {
    flex-shrink: 0;
    color: var(--home-accent-soft);
    font-size: 1rem;
    opacity: 0.85;
}

.connect-modal-item:hover .connect-modal-item-go {
    opacity: 1;
}

.cv-section-title {
    color: var(--home-text);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    padding-bottom: 0.6rem;
    border-bottom: 2px solid rgba(37, 99, 235, 0.25);
    position: relative;
}

.cv-section-title::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 48px;
    height: 2px;
    background: linear-gradient(90deg, var(--home-accent-soft), transparent);
}

.cv-item {
    display: flex;
    margin-bottom: 1.1rem;
    align-items: flex-start;
}

.cv-date {
    min-width: 88px;
    color: var(--home-accent-soft);
    font-weight: 700;
    font-size: 0.8125rem;
    margin-right: 1rem;
    flex-shrink: 0;
}

.cv-detail {
    flex: 1;
    line-height: 1.55;
    font-size: 0.9375rem;
}

.cv-detail strong {
    color: var(--home-text);
    display: block;
    font-size: 0.97rem;
}

.cv-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.cv-list li {
    padding: 0.45rem 0;
    color: var(--home-muted);
    position: relative;
    padding-left: 1.15rem;
    font-size: 0.92rem;
    line-height: 1.5;
}

.cv-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.65rem;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--home-accent-soft);
}

.cv-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.stat-item {
    background: #f8fafc;
    padding: 0.55rem 0.95rem;
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--home-muted);
    border: 1px solid var(--home-border);
}

.btn-download {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0.85rem 1.25rem;
    background: linear-gradient(135deg, var(--home-accent), #1d4ed8);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(30, 58, 95, 0.35);
    color: white;
}

/* ---------- Responsive ---------- */
@media (max-width: 991.98px) {
    .hero-layout {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-keywords {
        justify-content: center;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-quicklinks {
        grid-template-columns: 1fr;
        max-width: 420px;
        margin-left: auto;
        margin-right: auto;
    }

    /* 아이콘 | 가운데 정렬 텍스트 | 화살표 — 모바일에서 시각적 균형 */
    .hero-quicklink {
        display: grid;
        grid-template-columns: auto 1fr auto;
        align-items: center;
        column-gap: 0.75rem;
    }

    .hero-quicklink-main {
        text-align: center;
        padding-left: 0;
        align-items: center;
    }
}

@media (max-width: 575.98px) {
    .hero-section {
        padding-top: 1.5rem;
    }

    .hero-photo {
        max-width: 260px;
    }

    .poster-image-wrap {
        height: 140px;
    }

    .cv-item {
        flex-direction: column;
    }

    .cv-date {
        margin-right: 0;
        margin-bottom: 0.35rem;
    }

    .cv-stats {
        justify-content: center;
    }
}