/* ============================================================
   GLOBAL / SHARED
   ============================================================ */
:root {
    --wsu-crimson: #981e32;
    --wsu-dark-crimson: #5e121e;
    --text-color: #000;
    --bg-color: #fff;
    --border-color: #eaeaea;
}

body {
    font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    font-size: 17px;
}

a {
    color: var(--wsu-crimson);
    text-decoration: none;
    transition: color 0.2s ease;
}

.content p a {
    color: var(--wsu-crimson);
    text-decoration: none;
    font-weight: 400;
    border-bottom: 2px solid transparent;
    transition: text-shadow 0.15s ease, border-bottom-color 0.15s ease;
}
.content p a:hover {
    text-shadow: 0 0 0.4px var(--wsu-crimson), 0 0 0.4px var(--wsu-crimson);
    border-bottom-color: var(--wsu-crimson);
}

p { margin-top: 0; margin-bottom: 1rem; text-align: justify; }
h2 { font-size: 1.7rem; font-weight: 400; margin-top: 40px; margin-bottom: 10px; color: #000; }

/* ============================================================
   HEADER BANNER — two-row layout
   ============================================================ */
.header-banner {
    background-color: #fff;
    max-width: 950px;
    margin: 0 auto 30px auto;
    border-top: 1.5px solid var(--wsu-dark-crimson);
    border-bottom: 1.5px solid var(--wsu-dark-crimson);
}

/* Shared inner container for both rows */
.header-inner {
    max-width: 950px;
    margin: 0 auto;
    padding: 0 30px;
    box-sizing: border-box;
}

/* ── ROW 1: identity ── */
.header-identity-row {
    padding: 28px 0 24px;
}

.header-identity-row .header-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 36px;
}

/* Left column: photo */
.header-photo-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
    margin-top: 20px;
}

.header-profile-img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center 20%;
    border: 3px solid #e0e0e0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    display: block;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.header-profile-img:hover {
    transform: scale(1.03);
    box-shadow: 0 4px 14px rgba(0,0,0,0.12);
}

.header-social {
    display: flex;
    gap: 20px;
    font-size: 2.5rem;
    justify-content: flex-start;
    margin-top: 10px;
}

.header-social a {
    color: #000;
    transition: color 0.2s ease, transform 0.2s ease;
}

.header-social a:hover {
    color: var(--wsu-crimson);
    transform: translateY(-2px);
}

/* Right column: name + affiliation */
.header-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0;
    align-self: center;
    margin-top: 30px;
}

.page-title {
    font-size: 2.6rem;
    font-weight: 300;
    margin: 0 0 6px 0;
    color: #000;
    line-height: 1.1;
}

.page-title strong {
    font-weight: 700;
    color: var(--wsu-crimson);
}

.affiliation-block { margin: 0; }
.affiliation-block p {
    font-size: 1.0rem;
    font-style: italic;
    color: #000;
    margin: 0;
    line-height: 1.5;
    text-align: left;
}

/* ── ROW 2: navigation ── */
.header-nav-row {
    background-color: #ffffff;
    border-top: 1.5px solid var(--wsu-dark-crimson);
}

.header-nav-row .header-inner {
    display: flex;
    justify-content: center;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 0;
}

nav li { display: flex; }

nav a {
    display: flex;
    align-items: center;
    color: #000000;
    font-weight: 400;
    font-size: 1.0rem;
    padding: 13px 22px;
    transition: color 0.2s ease;
    white-space: nowrap;
}

nav a:hover {
    color: var(--wsu-crimson);
    font-weight: 600;
}

nav a.active {
    color: var(--wsu-crimson);
    font-weight: 700;
}

/* ============================================================
   SECTION RIBBON
   ============================================================ */
.section-ribbon {
    border-bottom: 1.5px solid var(--wsu-dark-crimson);
    margin-bottom: 20px;
    margin-top: -5px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
    text-align: center;
    padding: 20px 30px;
    font-size: 0.88rem;
    color: #555;
    border-top: 1px solid #000;
    max-width: 950px;
    margin: 0 auto;
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
#back-to-top {
    background: rgba(152, 30, 50, 0.8);
    border-radius: 50%;
    bottom: 30px;
    color: #fff;
    position: fixed;
    right: 30px;
    height: 45px;
    width: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: background-color 0.2s ease;
}

#back-to-top:hover { background: rgba(94, 18, 30, 0.9); }

/* ============================================================
   HOME PAGE
   ============================================================ */
.container {
    max-width: 950px;
    margin: 0 auto;
    padding: 0 30px 40px 30px;
    box-sizing: border-box;
}

/* News table */
.news-table { width: 100%; border-collapse: collapse; }
.news-table td { padding: 10px 0; border-top: 1px solid #f5f5f5; vertical-align: top; }
.news-date { width: 130px; font-weight: 600; color: #000; }
.hidden-news { display: none; }

.news-table td a {
    color: var(--wsu-crimson);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: text-shadow 0.15s ease, border-bottom-color 0.15s ease;
}
.news-table td a:hover {
    text-shadow: 0 0 0.4px var(--wsu-crimson), 0 0 0.4px var(--wsu-crimson);
    border-bottom-color: var(--wsu-crimson);
}

/* See more button */
.button-container { width: 100%; text-align: center; margin-top: 15px; }
.see-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 600;
    color: var(--wsu-crimson);
    font-size: 0.95rem;
    user-select: none;
    padding: 5px 15px;
    transition: opacity 0.2s;
}
.see-more-btn:hover { opacity: 0.8; }
.see-more-btn i { transition: transform 0.3s ease; }
.see-more-btn.active i { transform: rotate(180deg); }

/* Contact */
.contact-footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 40px; padding-top: 10px; }
.contact-column { flex: 1; min-width: 250px; }
.contact-item { margin-bottom: 10px; display: flex; align-items: flex-start; gap: 12px; font-size: 1rem; }
.contact-item i { color: #000; width: 18px; text-align: center; margin-top: 5px; }
.email-link { text-decoration: underline; }

/* ============================================================
   CV PAGE
   ============================================================ */
.cv-wrapper {
    max-width: 950px;
    margin: 0 auto;
    padding: 0 30px 40px 30px;
    box-sizing: border-box;
}

.cv-toolbar {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 10px;
}

.cv-toolbar h2 {
    text-align: center;
    margin: 0;
    font-size: 1.7rem;
    font-weight: 400;
    color: #000;
}

.cv-toolbar .open-btn {
    position: absolute;
    right: 0;
}

.cv-toolbar .spacer { display: none; }

.cv-frame-container {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.cv-frame-container iframe {
    width: 100%;
    height: 85vh;
    border: none;
    display: block;
    margin-top: -8px;
}

/* ============================================================
   RESEARCH PAGE
   ============================================================ */
.research-wrapper {
    max-width: 950px;
    margin: 0 auto;
    padding: 0 30px 40px 30px;
    box-sizing: border-box;
}

.research-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.research-toolbar h2 {
    margin: 0;
    font-size: 1.7rem;
    font-weight: 700;
    color: #000;
}

.research-frame-container {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.research-frame-container iframe {
    width: 100%;
    height: 85vh;
    border: none;
    display: block;
    margin-top: -8px;
}

.open-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--wsu-crimson);
    color: #fff;
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 0.95rem;
    font-weight: 600;
    white-space: nowrap;
    transition: background-color 0.2s;
    text-decoration: none;
}
.open-btn:hover { background-color: var(--wsu-dark-crimson); color: #fff; }

/* ============================================================
   PUBLICATIONS PAGE
   ============================================================ */
.pub-wrapper {
    max-width: 950px;
    margin: 0 auto;
    padding: 0 30px 40px 30px;
    box-sizing: border-box;
}

.pub-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 40px;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1.5px solid var(--wsu-dark-crimson);
}

.pub-header-row h2 { margin: 0; font-size: 1.7rem; font-weight: 700; color: #000; }

.pub-header-row .scholar-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: #000;
    font-size: 1.05rem;
    font-weight: 400;
    text-decoration: none;
    transition: color 0.2s;
}
.pub-header-row .scholar-link:hover { color: var(--wsu-crimson); font-weight: 600; }
.pub-header-row .scholar-link i { font-size: 1.8rem; }

.pub-legend {
    font-size: 0.88rem;
    color: #000;
    font-style: italic;
    margin: 14px 0 12px 0;
    line-height: 1.8;
    padding: 0;
}

.pub-legend-divider { width: 100%; height: 1px; background-color: #000; margin-bottom: 20px; }

.my-name { font-weight: 700; text-decoration: underline; font-style: normal; color: var(--wsu-crimson); }
.advisor-name { font-weight: 400; text-decoration: none; font-style: normal; color: #000; }

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

.pub-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 18px 0;
    border-bottom: 1px solid #efefef;
}

.pub-label { min-width: 60px; max-width: 60px; padding-top: 2px; flex-shrink: 0; }
.label-id { font-size: 1.3rem; font-weight: 800; white-space: nowrap; }
.label-conf { color: #1a8c1a; }
.label-workshop { color: #cc7700; }

.pub-content { flex: 1; font-size: 1rem; line-height: 1.7; color: #111; }

.pub-venue {
    display: inline-block;
    font-size: 1.02rem;
    font-weight: 600;
    color: #fff;
    background-color: #111;
    border-radius: 4px;
    padding: 1px 8px;
    margin-right: 7px;
    vertical-align: middle;
    letter-spacing: 0.02em;
}

.pub-proc { font-style: italic; }
.pub-content a { color: #000; font-weight: 400; text-decoration: none; }
.pub-content a:hover { text-decoration: underline; }
a.pdf-link { color: #1a6bbf !important; font-weight: 400 !important; text-decoration: none !important; }
a.pdf-link:hover { text-decoration: underline !important; }

/* ============================================================
   BEYOND THE BOOKS PAGE
   ============================================================ */
.hero { height: 100vh; position: relative; overflow: hidden; }

.background-video {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    z-index: -1;
}

.overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.3);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
}

.overlay h1 { font-size: 4rem; font-weight: 300; letter-spacing: 5px; margin: 0 0 20px 0; color: #fff; }
.arrow { font-size: 1.8rem; display: flex; flex-direction: column; align-items: center; }
.arrow span { margin-top: 5px; }
.arrow::before { content: "↓"; font-size: 2rem; display: block; margin-bottom: 10px; }
.subtext { font-size: 0.9rem; text-transform: uppercase; border-top: 1px solid #fff; padding-top: 5px; margin-top: 10px; }

.likings-section { padding: 50px 20px; background-color: #f5f5f5; text-align: center; }
.likings-section > h2 { font-size: 3rem; color: #333; margin: 0 0 30px 0; letter-spacing: 2px; }
.likings-container { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; }

.liking-item {
    max-width: 250px;
    text-align: center;
    background: #fff;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.liking-item img { width: 100%; height: auto; border-radius: 10px; margin-bottom: 10px; }
.liking-item h3 { font-size: 1.5rem; color: #555; margin: 10px 0; }
.liking-item p { font-size: 1rem; color: #666; text-align: left; }
.liking-item:hover { transform: translateY(-5px); box-shadow: 0 8px 12px rgba(0,0,0,0.2); }

.photography-album { padding: 50px 20px; background-color: #fafafa; text-align: center; }
.photography-album > h2 { font-size: 3rem; color: #333; margin: 0 0 30px 0; letter-spacing: 2px; }
.album { display: flex; flex-direction: column; gap: 15px; }
.album-row { display: flex; justify-content: center; gap: 10px; }
.album-row img {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.album-row img:hover { transform: scale(1.05); box-shadow: 0 8px 12px rgba(0,0,0,0.2); }

/* ============================================================
   RESPONSIVE — TABLET (≤ 900px)
   ============================================================ */
@media (max-width: 900px) {
    .container,
    .cv-wrapper,
    .research-wrapper,
    .pub-wrapper { padding: 0 20px 40px 20px; }

    nav a { padding: 12px 16px; }

    .cv-frame-container iframe,
    .research-frame-container iframe { height: 75vh; }
    .cv-toolbar .spacer { display: none; }
}

/* ============================================================
   RESPONSIVE — MOBILE (≤ 600px)
   ============================================================ */
@media (max-width: 600px) {
    .header-identity-row { padding: 16px 0; }

    /* Stack photo above text on small screens */
    .header-identity-row .header-inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .header-photo-col { margin-top: 0; }
    .header-text { align-items: center; margin-top: 8px; }
    .affiliation-block p { text-align: center; }
    .header-social { justify-content: center; }

    nav ul { flex-wrap: wrap; justify-content: center; }
    nav a { padding: 9px 12px; }

    .container,
    .cv-wrapper,
    .research-wrapper,
    .pub-wrapper { padding: 0 16px 32px 16px; }

    .news-table,
    .news-table tbody,
    .news-table tr,
    .news-table td { display: block; width: 100%; }
    .news-date { width: auto; padding-bottom: 2px; padding-top: 10px; font-size: 0.85rem; }
    .news-table td:last-child { padding-top: 0; padding-bottom: 10px; }

    .cv-toolbar,
    .research-toolbar { flex-direction: column; align-items: flex-start; gap: 10px; }
    .cv-toolbar h2,
    .research-toolbar h2 { text-align: left; font-size: 1.4rem; }
    .cv-toolbar .spacer { display: none; }

    .cv-frame-container iframe,
    .research-frame-container iframe { height: 60vh; }

    .pub-header-row { flex-direction: column; align-items: flex-start; gap: 10px; }
    .pub-item { flex-direction: column; gap: 4px; }
    .pub-label { min-width: unset; max-width: unset; }

    .contact-footer { gap: 20px; }
    .contact-column { min-width: 100%; }

    .overlay h1 { font-size: 2.4rem; letter-spacing: 3px; }
    .likings-section > h2,
    .photography-album > h2 { font-size: 2rem; }
    .album-row { flex-direction: column; align-items: center; }
    .album-row img { max-width: 90%; }

    #back-to-top { width: 38px; height: 38px; right: 16px; bottom: 16px; }
}