/* ============================================
   kerenkewei.com — Main Stylesheet
   yuyi · 可人可为乐园
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:wght@300;400;500&family=Noto+Serif+SC:wght@300;400;500&family=Noto+Sans+SC:wght@300;400&display=swap');

/* ---- Reset & Base ---- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --black:      #111110;
  --off-white:  #F8F6F2;
  --warm-gray:  #E8E4DE;
  --mid:        #9A9189;
  --faint:      #C8C2BA;
  --accent:     #2D5A3D;
  --accent2:    #8B7355;
  --nav-h:      56px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--off-white);
  color: var(--black);
  font-family: 'DM Sans', 'Noto Sans SC', sans-serif;
  font-weight: 300;
  font-size: 15px;
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

a { text-decoration: none; color: inherit; }

/* ---- Scroll-reveal ---- */
.fi {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}
.fi.v { opacity: 1; transform: none; }

/* ============================================
   NAV
   ============================================ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  height: var(--nav-h);
  background: rgba(248, 246, 242, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(17, 17, 16, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.yuyi-mark {
  font-family: 'DM Serif Display', serif;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--off-white);
  background: var(--black);
  padding: 4px 10px;
  border-radius: 2px;
  user-select: none;
}

.site-name {
  font-family: 'Noto Serif SC', serif;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--black);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-right a {
  font-size: 12px;
  font-weight: 400;
  color: var(--mid);
  letter-spacing: 0.08em;
  transition: color 0.2s;
  position: relative;
}
.nav-right a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--black);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.nav-right a:hover { color: var(--black); }
.nav-right a:hover::after { transform: scaleX(1); }
.nav-right a.active { color: var(--black); }
.nav-right a.active::after { transform: scaleX(1); }

/* hamburger — mobile */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--black);
  transition: all 0.3s;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  padding-top: var(--nav-h);
  display: flex;
  flex-direction: column;
}

.hero-main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: calc(100vh - var(--nav-h) - 48px);
}

/* left text */
.hero-text {
  padding: 72px 56px 72px 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-kicker {
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--mid);
  text-transform: uppercase;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.hero-kicker::before {
  content: '';
  display: block;
  width: 24px; height: 1px;
  background: var(--mid);
  flex-shrink: 0;
}

.hero-h1 {
  font-family: 'DM Serif Display', serif;
  font-size: 76px;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--black);
  margin-bottom: 32px;
}
.hero-h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-slash {
  width: 40px; height: 2px;
  background: var(--black);
  margin-bottom: 28px;
}

.hero-tagline {
  font-family: 'Noto Serif SC', serif;
  font-size: 17px;
  font-weight: 300;
  letter-spacing: 0.06em;
  line-height: 1.9;
  color: var(--black);
  margin-bottom: 6px;
}
.hero-tagline-en {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mid);
  margin-bottom: 40px;
}

.hero-desc {
  font-size: 13px;
  color: var(--mid);
  line-height: 2.2;
  max-width: 340px;
  margin-bottom: 48px;
}

.hero-ctas {
  display: flex;
  gap: 12px;
}

.cta-primary {
  display: inline-block;
  background: var(--black);
  color: var(--off-white);
  padding: 13px 30px;
  font-size: 12px;
  font-family: 'DM Sans', sans-serif;
  font-weight: 400;
  letter-spacing: 0.1em;
  transition: background 0.25s;
  border-radius: 1px;
}
.cta-primary:hover { background: var(--accent); }

.cta-ghost {
  display: inline-block;
  border: 1px solid rgba(17,17,16,0.22);
  color: var(--black);
  padding: 12px 24px;
  font-size: 12px;
  letter-spacing: 0.1em;
  transition: all 0.25s;
  border-radius: 1px;
}
.cta-ghost:hover {
  background: var(--black);
  color: var(--off-white);
  border-color: var(--black);
}

/* right visual */
.hero-visual {
  background: var(--warm-gray);
  position: relative;
  overflow: hidden;
}

.hero-photo-grid {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 3fr 2fr;
  grid-template-rows: 3fr 2fr;
  gap: 3px;
}

.hpg-item {
  background: var(--warm-gray);
  overflow: hidden;
  position: relative;
}
.hpg-item.span2 { grid-column: span 2; }

.hpg-item img {
  transition: transform 0.6s ease;
  filter: saturate(0.88);
}
.hpg-item:hover img {
  transform: scale(1.04);
  filter: saturate(1);
}

.hpg-placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  color: var(--faint);
}

.yuyi-badge {
  position: absolute;
  bottom: 20px; right: 20px;
  font-family: 'DM Serif Display', serif;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--off-white);
  background: rgba(17,17,16,0.65);
  padding: 5px 12px;
  border-radius: 2px;
  backdrop-filter: blur(4px);
  z-index: 2;
}

/* ticker strip */
.hero-strip {
  background: var(--black);
  height: 48px;
  display: flex;
  align-items: center;
  overflow: hidden;
  flex-shrink: 0;
}

.strip-track {
  display: flex;
  gap: 0;
  animation: ticker 22s linear infinite;
  white-space: nowrap;
}

.strip-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 40px;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(248,246,242,0.45);
}

.strip-dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

@keyframes ticker {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============================================
   ABOUT
   ============================================ */
.about-sec {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 80vh;
}

.about-img {
  background: var(--warm-gray);
  position: relative;
  overflow: hidden;
  min-height: 520px;
}

.about-img img {
  position: absolute;
  inset: 0;
  filter: saturate(0.8);
  transition: transform 0.8s ease;
}
.about-img:hover img { transform: scale(1.03); }

.about-img-placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  color: var(--faint);
}

.about-img-label {
  position: absolute;
  bottom: 28px; left: 28px;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(248,246,242,0.65);
  background: rgba(17,17,16,0.5);
  padding: 6px 14px;
  border-radius: 2px;
  backdrop-filter: blur(4px);
}

.about-text {
  padding: 80px 72px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--off-white);
}

/* shared section label */
.sec-label {
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.sec-label::before {
  content: '';
  display: block;
  width: 20px; height: 1px;
  background: var(--mid);
  flex-shrink: 0;
}

.about-h2 {
  font-family: 'DM Serif Display', serif;
  font-size: 44px;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--black);
  margin-bottom: 28px;
}
.about-h2 em { font-style: italic; color: var(--accent); }

.about-body {
  font-size: 14px;
  color: var(--mid);
  line-height: 2.25;
  margin-bottom: 16px;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
}

.tag {
  border: 1px solid var(--faint);
  padding: 6px 18px;
  font-size: 11px;
  color: var(--mid);
  letter-spacing: 0.08em;
  border-radius: 100px;
  transition: all 0.2s;
  cursor: default;
}
.tag:hover {
  border-color: var(--black);
  color: var(--black);
}

/* ============================================
   SHARED SECTION HEADER
   ============================================ */
.sec-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 44px;
}

.sec-h {
  font-family: 'DM Serif Display', serif;
  font-size: 36px;
  letter-spacing: -0.01em;
  color: var(--black);
}
.sec-h span {
  font-family: 'Noto Serif SC', serif;
  font-size: 14px;
  font-weight: 300;
  color: var(--mid);
  letter-spacing: 0.1em;
  margin-left: 16px;
}

.view-all {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mid);
  border-bottom: 1px solid var(--faint);
  padding-bottom: 2px;
  transition: all 0.2s;
}
.view-all:hover {
  color: var(--black);
  border-color: var(--black);
}

/* dark variant */
.sec-h--light { color: var(--off-white); }
.sec-h--light span { color: rgba(248,246,242,0.38); }
.view-all--light {
  color: rgba(248,246,242,0.38);
  border-color: rgba(248,246,242,0.14);
}
.view-all--light:hover {
  color: var(--off-white);
  border-color: var(--off-white);
}

/* ============================================
   GALLERY (index.html)
   ============================================ */
.gallery-sec { padding: 80px; }

.gallery-mosaic {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: 260px 200px;
  gap: 6px;
}

.gm {
  background: var(--warm-gray);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}
.gm img {
  filter: saturate(0.82);
  transition: transform 0.55s ease, filter 0.55s ease;
}
.gm:hover img { transform: scale(1.06); filter: saturate(1); }

.gm.c13 { grid-column: 1 / 4; }
.gm.c34 { grid-column: 3 / 5; }
.gm.c46 { grid-column: 4 / 7; }
.gm.c12 { grid-column: 1 / 3; }
.gm.c35 { grid-column: 3 / 6; }
.gm.c56 { grid-column: 5 / 7; }
.gm.r12 { grid-row: 1 / 3; }

.gm-ph {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--faint);
}

.gm-cap {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 20px 14px 12px;
  background: linear-gradient(transparent, rgba(17,17,16,0.55));
  color: rgba(248,246,242,0.85);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 0.3s;
}
.gm:hover .gm-cap { opacity: 1; }

/* ============================================
   JOURNAL
   ============================================ */
.journal-sec {
  padding: 80px;
  background: var(--black);
  color: var(--off-white);
}

.journal-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 1px;
  background: rgba(248,246,242,0.06);
}

.jcard {
  background: var(--black);
  padding: 36px 32px;
  cursor: pointer;
  transition: background 0.2s;
}
.jcard:hover { background: #1A1A18; }

.jcat {
  font-size: 10px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.jtitle {
  font-family: 'DM Serif Display', serif;
  font-size: 19px;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--off-white);
  margin-bottom: 12px;
}
.jcard.big .jtitle { font-size: 26px; margin-bottom: 16px; }

.jexcerpt {
  font-size: 12px;
  color: rgba(248,246,242,0.4);
  line-height: 2.1;
}

.jdate {
  font-size: 10px;
  color: rgba(248,246,242,0.2);
  margin-top: 20px;
  letter-spacing: 0.1em;
}

.jarrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: rgba(248,246,242,0.3);
  margin-top: 18px;
  letter-spacing: 0.1em;
  transition: color 0.2s;
}
.jcard:hover .jarrow { color: var(--off-white); }

/* ============================================
   HOBBIES
   ============================================ */
.hobbies-sec { padding: 80px; }

.hobbies-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.hcard {
  border: 1px solid var(--warm-gray);
  padding: 36px 28px;
  background: var(--off-white);
  transition: border-color 0.3s, transform 0.3s;
  cursor: default;
}
.hcard:hover {
  border-color: var(--black);
  transform: translateY(-4px);
}

.hcard-num {
  font-family: 'DM Serif Display', serif;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--faint);
  margin-bottom: 24px;
}

.hcard-icon { font-size: 28px; margin-bottom: 18px; }

.hcard-name {
  font-family: 'DM Serif Display', serif;
  font-size: 20px;
  color: var(--black);
  margin-bottom: 4px;
}

.hcard-name-zh {
  font-family: 'Noto Serif SC', serif;
  font-size: 13px;
  font-weight: 300;
  color: var(--mid);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.hcard-desc {
  font-size: 12px;
  color: var(--mid);
  line-height: 2;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
  background: var(--off-white);
  border-top: 1px solid var(--warm-gray);
  padding: 40px 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.foot-left { display: flex; flex-direction: column; gap: 8px; }

.foot-yuyi {
  font-family: 'DM Serif Display', serif;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--off-white);
  background: var(--black);
  padding: 5px 12px;
  border-radius: 2px;
  display: inline-block;
  width: fit-content;
}

.foot-site {
  font-family: 'Noto Serif SC', serif;
  font-size: 13px;
  font-weight: 300;
  color: var(--black);
  letter-spacing: 0.1em;
}

.foot-slogan {
  font-size: 11px;
  color: var(--mid);
  letter-spacing: 0.06em;
}

.foot-right {
  text-align: right;
  font-size: 11px;
  color: var(--mid);
  line-height: 2.1;
  letter-spacing: 0.05em;
}

/* ============================================
   GALLERY PAGE (gallery.html)
   ============================================ */
.page-hero {
  padding-top: var(--nav-h);
  padding: calc(var(--nav-h) + 64px) 80px 56px;
  border-bottom: 1px solid var(--warm-gray);
}

.page-hero-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
}

.page-title {
  font-family: 'DM Serif Display', serif;
  font-size: 56px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--black);
}
.page-title span {
  display: block;
  font-family: 'Noto Serif SC', serif;
  font-size: 15px;
  font-weight: 300;
  color: var(--mid);
  letter-spacing: 0.18em;
  margin-bottom: 12px;
}

.page-desc {
  max-width: 320px;
  font-size: 13px;
  color: var(--mid);
  line-height: 2;
  text-align: right;
}

/* filter tabs */
.gallery-filters {
  padding: 28px 80px;
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--warm-gray);
}

.filter-btn {
  border: 1px solid var(--faint);
  background: none;
  padding: 7px 20px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mid);
  cursor: pointer;
  border-radius: 100px;
  font-family: 'DM Sans', sans-serif;
  transition: all 0.2s;
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--black);
  border-color: var(--black);
  color: var(--off-white);
}

/* masonry grid */
.gallery-full {
  padding: 48px 80px 80px;
  columns: 3;
  column-gap: 12px;
}

.gallery-full-item {
  break-inside: avoid;
  margin-bottom: 12px;
  overflow: hidden;
  position: relative;
  cursor: pointer;
  background: var(--warm-gray);
}

.gallery-full-item img {
  display: block;
  width: 100%;
  height: auto;
  filter: saturate(0.85);
  transition: transform 0.55s ease, filter 0.55s ease;
}
.gallery-full-item:hover img {
  transform: scale(1.04);
  filter: saturate(1);
}

.gallery-full-item .gf-cap {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 24px 16px 14px;
  background: linear-gradient(transparent, rgba(17,17,16,0.6));
  color: rgba(248,246,242,0.9);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 0.3s;
}
.gallery-full-item:hover .gf-cap { opacity: 1; }

/* lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(17,17,16,0.92);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  width: auto;
  height: auto;
}
.lightbox-close {
  position: absolute;
  top: 24px; right: 32px;
  font-size: 28px;
  color: rgba(248,246,242,0.6);
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s;
}
.lightbox-close:hover { color: var(--off-white); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .hero-h1 { font-size: 56px; }
  .hero-text { padding: 56px 40px 56px 56px; }
  .about-text { padding: 60px 48px; }
  .gallery-full { columns: 2; }
  .hobbies-grid { grid-template-columns: repeat(2, 1fr); }
  .journal-grid { grid-template-columns: 1fr 1fr; }
  .jcard.big { grid-column: span 2; }
}

@media (max-width: 768px) {
  nav { padding: 0 24px; }
  .nav-right { display: none; }
  .nav-right.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: var(--off-white);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--warm-gray);
  }
  .nav-toggle { display: flex; }

  .hero-main { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .hero-text { padding: 48px 24px; }
  .hero-h1 { font-size: 48px; }

  .about-sec { grid-template-columns: 1fr; }
  .about-img { min-height: 300px; }
  .about-text { padding: 48px 24px; }

  .gallery-sec,
  .gallery-full { padding: 40px 24px; }
  .gallery-mosaic { grid-template-columns: 1fr 1fr; grid-template-rows: auto; }
  .gm.c13,.gm.c34,.gm.c46,.gm.c12,.gm.c35,.gm.c56 { grid-column: auto; }
  .gm.r12 { grid-row: auto; }

  .gallery-full { columns: 2; }

  .journal-sec { padding: 48px 24px; }
  .journal-grid { grid-template-columns: 1fr; }
  .jcard.big { grid-column: auto; }

  .hobbies-sec { padding: 48px 24px; }
  .hobbies-grid { grid-template-columns: 1fr 1fr; }

  footer { padding: 32px 24px; flex-direction: column; gap: 24px; align-items: flex-start; }
  .foot-right { text-align: left; }

  .page-hero { padding: calc(var(--nav-h) + 40px) 24px 40px; }
  .page-hero-inner { flex-direction: column; gap: 20px; align-items: flex-start; }
  .page-desc { text-align: left; }
  .gallery-filters { padding: 20px 24px; }

  .strip-track { animation-duration: 14s; }
}

@media (max-width: 480px) {
  .hero-h1 { font-size: 38px; }
  .gallery-mosaic { grid-template-columns: 1fr; }
  .gallery-full { columns: 1; }
  .hobbies-grid { grid-template-columns: 1fr; }
  .journal-grid { grid-template-columns: 1fr; }
}