/* ==========================================================================
   Custom theme — inspired by soft blue cinematic academic aesthetic
   Scroll reveals, hero composition, atmospheric background
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Infant:wght@400;500;600;700&family=Source+Sans+3:wght@300;400;500;600&display=swap');

:root {
  --xs-main: #328CC7;
  --xs-main-rgb: 50, 140, 199;
  --xs-ink: #231815;
  --xs-muted: #5a646c;
  --xs-paper: #f7f9fb;
  --xs-mist: #e8f1f7;
  --xs-font-display: "Cormorant Infant", Georgia, serif;
  --xs-font-body: "Source Sans 3", "Segoe UI", sans-serif;
}

/* Atmospheric page background */
html {
  background: var(--xs-paper);
}

body {
  font-family: var(--xs-font-body);
  color: var(--xs-ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(var(--xs-main-rgb), 0.12), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(134, 168, 181, 0.14), transparent 50%),
    linear-gradient(180deg, #fafcfd 0%, #f3f7fa 40%, #eef3f7 100%);
  background-attachment: fixed;
  letter-spacing: 0.01em;
}

h1, h2, h3, h4, .page__title, .author__name, .greedy-nav a {
  font-family: var(--xs-font-display);
  letter-spacing: 0.03em;
  font-weight: 600;
}

a {
  transition: color 0.25s ease, opacity 0.25s ease;
}

::selection {
  background: #6ccfee;
  color: #fff;
}

/* Masthead refinement */
.masthead {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(var(--xs-main-rgb), 0.12);
  box-shadow: 0 8px 30px rgba(35, 24, 21, 0.04);
}

.greedy-nav a {
  font-size: 1.05em;
  font-weight: 500;
}

.greedy-nav a:hover {
  color: var(--xs-main) !important;
}

/* Sidebar avatar soft ring */
.author__avatar img {
  border: 3px solid rgba(var(--xs-main-rgb), 0.35);
  box-shadow: 0 8px 24px rgba(var(--xs-main-rgb), 0.18);
  transition: transform 0.45s cubic-bezier(.66, .09, .22, 1), box-shadow 0.45s ease;
}

.author__avatar img:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 32px rgba(var(--xs-main-rgb), 0.28);
}

.sidebar .author__content {
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
}

.sidebar .author__bio {
  margin-top: 0.35rem;
  line-height: 1.45;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
  max-width: 100%;
}

.author__urls.social-icons a:hover {
  color: var(--xs-main);
}

/* ---------- Loading veil (cinematic intro) ---------- */
.xs-loading {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #fff;
  transition:
    opacity 0.7s cubic-bezier(.68, .29, .58, 1),
    visibility 0.7s cubic-bezier(.68, .29, .58, 1),
    filter 0.55s cubic-bezier(.68, .29, .58, 1);
}

.xs-loading.is-gone {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  filter: blur(8px);
}

.xs-loading__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(900px 520px at 18% 20%, rgba(var(--xs-main-rgb), 0.18), transparent 60%),
    radial-gradient(700px 480px at 88% 78%, rgba(134, 168, 181, 0.2), transparent 55%),
    linear-gradient(165deg, #ffffff 0%, #eef5fa 55%, #e4eef5 100%);
}

.xs-loading__portrait {
  position: absolute;
  width: min(38vw, 380px);
  aspect-ratio: 3 / 4;
  right: 7%;
  top: 50%;
  transform: translateY(-50%) rotate(-3deg) scale(1.03);
  border-radius: 6px;
  overflow: hidden;
  opacity: 0;
  filter: grayscale(80%) blur(5px) brightness(1.15);
  transition:
    opacity 0.8s cubic-bezier(.68, .29, .58, 1) 0.3s,
    filter 1.2s cubic-bezier(.68, .29, .58, 1) 0.3s,
    transform 1.4s cubic-bezier(.2, 0, .52, 1.03) 0.4s;
  box-shadow: 0 24px 60px rgba(35, 24, 21, 0.16);
  pointer-events: none;
  background: #d7e6f0;
}

.xs-loading__portrait img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

body.--is-loaded .xs-loading__portrait {
  opacity: 0.88;
  filter: grayscale(25%) blur(0) brightness(1);
  transform: translateY(-50%) rotate(-1.5deg) scale(1);
}

body.is-visited.--is-loaded .xs-loading__portrait {
  opacity: 0.75;
  filter: grayscale(35%) blur(0) brightness(1.02);
}

.xs-loading__panel {
  position: relative;
  z-index: 2;
  width: min(92vw, 560px);
  padding: 1.5rem;
  text-align: left;
}

.xs-loading__eyebrow,
.xs-loading__name,
.xs-loading__role,
.xs-loading__place,
.xs-loading__meta,
.xs-loading__line,
.xs-loading__hint {
  opacity: 0;
  filter: blur(8px);
  transform: translateY(18px);
}

.xs-loading__eyebrow {
  margin: 0 0 0.85rem;
  font-family: var(--xs-font-display);
  font-size: 0.82rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--xs-main);
}

.xs-loading__name {
  margin: 0 0 0.85rem;
  font-family: var(--xs-font-display);
  font-size: clamp(2.4rem, 7vw, 3.8rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.04em;
  color: var(--xs-ink);
}

.xs-loading__role,
.xs-loading__place {
  margin: 0;
  font-family: var(--xs-font-body);
  font-size: clamp(0.95rem, 2.2vw, 1.08rem);
  line-height: 1.55;
  color: var(--xs-muted);
}

.xs-loading__place {
  margin-bottom: 1rem;
  font-weight: 500;
  color: #3d4a52;
}

.xs-loading__meta {
  list-style: none;
  margin: 0 0 1.15rem;
  padding: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--xs-muted);
}

.xs-loading__line {
  width: 72px;
  height: 2px;
  margin: 0 0 0.9rem;
  background: linear-gradient(90deg, var(--xs-main), rgba(var(--xs-main-rgb), 0.15));
  transform-origin: left center;
}

.xs-loading__hint {
  margin: 0;
  font-family: var(--xs-font-display);
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--xs-main);
}

/* Staggered entrance (first visit & revisit) */
body.--is-loaded .xs-loading__eyebrow {
  animation: xs-intro-in 0.7s cubic-bezier(.66, .09, .22, 1) 0.05s forwards;
}
body.--is-loaded .xs-loading__name {
  animation: xs-intro-in 0.85s cubic-bezier(.66, .09, .22, 1) 0.18s forwards;
}
body.--is-loaded .xs-loading__role {
  animation: xs-intro-in 0.7s cubic-bezier(.66, .09, .22, 1) 0.34s forwards;
}
body.--is-loaded .xs-loading__place {
  animation: xs-intro-in 0.7s cubic-bezier(.66, .09, .22, 1) 0.42s forwards;
}
body.--is-loaded .xs-loading__meta {
  animation: xs-intro-in 0.7s cubic-bezier(.66, .09, .22, 1) 0.55s forwards;
}
body.--is-loaded .xs-loading__line {
  animation: xs-line-in 0.7s cubic-bezier(.66, .09, .22, 1) 0.68s forwards;
}
body.--is-loaded .xs-loading__hint {
  animation: xs-intro-in 0.7s cubic-bezier(.66, .09, .22, 1) 0.78s forwards;
}

@keyframes xs-intro-in {
  to {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
  }
}

@keyframes xs-line-in {
  from {
    opacity: 0;
    filter: blur(0);
    transform: translateY(0) scaleX(0.2);
  }
  to {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0) scaleX(1);
  }
}

/* ---------- Scroll reveal ---------- */
.js-scrani {
  opacity: 0;
  transform: translateY(28px);
  filter: blur(4px);
  transition:
    opacity 0.65s cubic-bezier(.66, .09, .22, 1),
    transform 0.75s cubic-bezier(.66, .09, .22, 1),
    filter 0.65s ease;
}

.js-scrani.--is-ani {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.js-scrani:nth-child(2) { transition-delay: 0.06s; }
.js-scrani:nth-child(3) { transition-delay: 0.12s; }
.js-scrani:nth-child(4) { transition-delay: 0.18s; }
.js-scrani:nth-child(5) { transition-delay: 0.24s; }

@media screen and (max-width: 768px) {
  .xs-loading__portrait {
    width: min(70vw, 280px);
    right: -6%;
    opacity: 0 !important;
  }

  body.--is-loaded:not(.is-visited) .xs-loading__portrait {
    opacity: 0.22 !important;
  }

  .xs-loading__panel {
    text-align: center;
  }

  .xs-loading__line {
    margin-left: auto;
    margin-right: auto;
    transform-origin: center;
  }

  .xs-loading__meta {
    display: inline-block;
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .js-scrani,
  .xs-loading__mark,
  .author__avatar img {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
  }
  .xs-loading { display: none; }
}

/* Hide template page title when custom home hero is present */
.page:has(.home-hero) > .page__inner-wrap > header {
  display: none;
}

/* ---------- Home hero ---------- */
.home-hero {
  position: relative;
  padding: 1.5rem 0 2rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid rgba(var(--xs-main-rgb), 0.15);
}

.home-hero__eyebrow {
  font-family: var(--xs-font-display);
  font-size: 0.95rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--xs-main);
  margin: 0 0 0.6rem;
}

.home-hero__name {
  font-family: var(--xs-font-display);
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 0.75rem;
  color: var(--xs-ink);
  background: linear-gradient(120deg, var(--xs-ink) 40%, var(--xs-main) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.home-hero__tagline {
  font-size: 1.05rem;
  color: var(--xs-muted);
  margin: 0 0 1rem;
  max-width: 42rem;
}

.home-hero__lead {
  font-size: 1.08rem;
  line-height: 1.75;
  max-width: 42rem;
  margin: 0 0 1.5rem;
}

.home-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.home-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.15rem;
  border-radius: 999px;
  background: var(--xs-main);
  color: #fff !important;
  text-decoration: none !important;
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  border: 1.5px solid var(--xs-main);
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, color 0.3s ease;
  box-shadow: 0 6px 18px rgba(var(--xs-main-rgb), 0.25);
}

.home-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(var(--xs-main-rgb), 0.35);
  color: #fff !important;
}

.home-btn--ghost {
  background: transparent;
  color: var(--xs-main) !important;
  box-shadow: none;
}

.home-btn--ghost:hover {
  background: rgba(var(--xs-main-rgb), 0.08);
  color: var(--xs-main) !important;
}

/* ---------- Home sections ---------- */
.home-section {
  margin: 2.75rem 0;
}

.home-section__title {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
  margin: 0 0 1.25rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid rgba(var(--xs-main-rgb), 0.18);
}

.home-section__en {
  font-family: var(--xs-font-display);
  font-size: 1.85rem;
  font-weight: 600;
  color: var(--xs-ink);
  letter-spacing: 0.06em;
}

.home-section__ja {
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--xs-main);
  opacity: 0.85;
}

.home-section__body p {
  line-height: 1.8;
  margin-bottom: 0.9rem;
}

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

.home-news li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-bottom: 1px dashed rgba(var(--xs-main-rgb), 0.18);
  line-height: 1.55;
}

.home-news__date {
  flex: 0 0 6.5rem;
  font-family: var(--xs-font-display);
  font-weight: 600;
  color: var(--xs-main);
  font-size: 0.95rem;
}

.home-news__text {
  flex: 1 1 auto;
  min-width: 0;
}

.home-interest-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.home-interest {
  padding: 1.15rem 1.2rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(var(--xs-main-rgb), 0.14);
  border-radius: 12px;
  box-shadow: 0 10px 28px rgba(35, 24, 21, 0.04);
  transition: transform 0.4s cubic-bezier(.66, .09, .22, 1), box-shadow 0.4s ease;
}

.home-interest:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(var(--xs-main-rgb), 0.14);
}

.home-interest h3 {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
  color: var(--xs-main);
}

.home-interest p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--xs-muted);
}

.home-pubs {
  padding-left: 1.25rem;
}

.home-pubs li {
  margin-bottom: 1rem;
  line-height: 1.65;
}

.home-more {
  margin-top: 0.5rem;
}

.home-more a {
  font-family: var(--xs-font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.home-contact {
  list-style: none;
  padding: 0;
}

.home-contact li {
  margin-bottom: 0.45rem;
}

/* ---------- Research cards ---------- */
.research-intro {
  margin-bottom: 1.75rem;
  line-height: 1.75;
}

.research-card {
  position: relative;
  margin: 0 0 1.75rem;
  padding: 1.4rem 1.5rem 1.5rem;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(var(--xs-main-rgb), 0.14);
  border-radius: 14px;
  box-shadow: 0 12px 32px rgba(35, 24, 21, 0.05);
  overflow: hidden;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.research-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--xs-main), #86a8b5);
}

.research-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(var(--xs-main-rgb), 0.14);
}

.research-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: center;
  margin-bottom: 0.65rem;
}

.research-card__status {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: rgba(var(--xs-main-rgb), 0.12);
  color: var(--xs-main);
}

.research-card__status--accepted {
  background: rgba(50, 160, 120, 0.12);
  color: #2a8a68;
}

.research-card__status--review {
  background: rgba(180, 130, 40, 0.12);
  color: #9a6d1c;
}

.research-card__date {
  font-size: 0.85rem;
  color: var(--xs-muted);
}

.research-card__title {
  margin: 0 0 0.35rem;
  font-size: 1.45rem;
  line-height: 1.3;
}

.research-card__venue {
  margin: 0 0 0.5rem;
  font-style: italic;
  color: var(--xs-muted);
}

.research-card__role {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
}

.research-card ul {
  margin: 0 0 0.75rem;
  padding-left: 1.2rem;
}

.research-card li {
  margin-bottom: 0.45rem;
  line-height: 1.6;
}

.research-card__links {
  margin: 0;
  font-size: 0.92rem;
}

/* ---------- Publications / archive polish ---------- */
.archive__item {
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(var(--xs-main-rgb), 0.1);
  transition: background 0.25s ease;
}

.archive__item-title {
  font-family: var(--xs-font-display);
  font-size: 1.25rem !important;
}

.cv-download {
  margin-bottom: 1.5rem;
}

/* Page content surface */
.page {
  background: rgba(255, 255, 255, 0.55);
  border-radius: 16px;
  padding: 0.5rem 1.25rem 1.5rem;
  box-shadow: 0 10px 40px rgba(35, 24, 21, 0.03);
}

@media screen and (max-width: 768px) {
  .home-news li {
    flex-direction: column;
    gap: 0.2rem;
  }

  .home-news__date {
    flex-basis: auto;
  }

  .page {
    padding: 0.25rem 0.5rem 1rem;
    background: transparent;
    box-shadow: none;
  }

  .home-hero__name {
    font-size: 2.2rem;
  }
}

/* Soft footer */
.page__footer {
  background: transparent !important;
  border-top: 1px solid rgba(var(--xs-main-rgb), 0.12);
}