/* ===== RESET & VARIABLES ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#02040f;--bg2:#030612;--bg3:#050815;
  --card:#080d1f;--card2:#09101f;--card3:#0b1226;
  --b1:rgba(96,165,250,.1);--b2:rgba(96,165,250,.22);--b3:rgba(96,165,250,.44);
  --cyan:#60a5fa;--cyan2:#93c5fd;--blue:#3b82f6;--indigo:#6366f1;
  --neon:#00d4ff;--neon2:#0099ff;
  --text:#f0f4ff;--sub:#7a9bbf;--dim:#3d5878;--dimmer:#263a52;
  --ease:cubic-bezier(.16,1,.3,1);
  --ease3d:cubic-bezier(.23,1,.32,1);
}
html{scroll-behavior:smooth}
body{
  font-family:'Syne',sans-serif;
  background:var(--bg);
  color:var(--text);
  overflow-x:hidden;
  line-height:1.6;
}

/* ===== NAV ===== */
.b-nav{
  position:fixed;top:0;inset-inline:0;z-index:200;
  display:flex;align-items:center;justify-content:space-between;
  padding:1rem 3.5rem;
  background:rgba(2,4,15,.82);backdrop-filter:blur(28px);
  border-bottom:1px solid var(--b1);
}
.b-nav::after{
  content:'';position:absolute;bottom:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--neon),transparent);
  opacity:.3;animation:border-flow 4s linear infinite;
}
@keyframes border-flow{
  0%{background-position:0% 50%}100%{background-position:200% 50%}
}
.b-nav-logo{
  font-size:1.1rem;font-weight:800;letter-spacing:-.01em;
  text-decoration:none;color:var(--text);
  text-shadow:0 0 20px rgba(96,165,250,.4);
  transition:text-shadow .3s;
  display:flex;align-items:center;gap:.5rem;
}
.b-nav-logo:hover{text-shadow:0 0 30px var(--neon),0 0 60px var(--neon2)}
.b-nav-right{display:flex;align-items:center;gap:1rem}
.b-back{
  display:inline-flex;align-items:center;gap:.4rem;
  color:var(--sub);text-decoration:none;
  font-size:.82rem;font-weight:600;
  border:1px solid var(--b1);border-radius:8px;
  padding:.4rem .9rem;
  transition:all .2s;
}
.b-back:hover{color:var(--cyan2);border-color:var(--b2);background:rgba(96,165,250,.05)}
.b-back svg{display:block;flex-shrink:0}
.b-nav-home{
  display:inline-flex;align-items:center;gap:.4rem;
  color:var(--sub);text-decoration:none;
  font-size:.82rem;font-weight:600;
  transition:color .2s;
}
.b-nav-home:hover{color:var(--cyan2)}

/* ===== DIVIDER LINE ===== */
.div{
  height:1px;
  background:linear-gradient(90deg,transparent,var(--neon),transparent);
  opacity:.22;
  box-shadow:0 0 10px var(--neon);
}

/* ===== KEYFRAMES ===== */
@keyframes rot{to{transform:rotate(360deg)}}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.2}}
@keyframes up3d{
  from{opacity:0;transform:translateY(30px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* ===== BUTTONS ===== */
.btn{
  display:inline-flex;align-items:center;gap:.42rem;
  text-decoration:none;font-family:'Syne',sans-serif;
  font-weight:700;font-size:.85rem;border-radius:9px;
  padding:.7rem 1.5rem;cursor:pointer;border:none;
  transition:transform .2s var(--ease3d),box-shadow .2s,background .2s;
}
.btn svg{flex-shrink:0;display:block}
.btn-p{
  background:linear-gradient(135deg,var(--blue),var(--neon2));
  color:#fff;
  box-shadow:0 4px 20px rgba(59,130,246,.35);
}
.btn-p:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(59,130,246,.5)}
.btn-o{
  background:rgba(96,165,250,.05);color:var(--sub);
  border:1px solid var(--b1);
}
.btn-o:hover{border-color:var(--b2);color:var(--text);background:rgba(96,165,250,.09)}

/* ===== SECTION SHARED ===== */
section{padding:6rem 2rem;position:relative;z-index:10}
.wrap{max-width:1180px;margin:0 auto}
.tag{
  display:inline-flex;align-items:center;gap:.4rem;
  border:1px solid var(--b2);border-radius:6px;
  padding:.28rem .8rem;font-size:.68rem;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);
  background:rgba(96,165,250,.04);backdrop-filter:blur(10px);
}
.sh{
  font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;
  line-height:1.1;letter-spacing:-.022em;margin-bottom:.8rem;
}
.sh em{font-style:normal;color:var(--cyan2);text-shadow:0 0 30px rgba(147,197,253,.4)}
.sp{color:var(--sub);font-size:.875rem;max-width:520px;line-height:1.9;margin-bottom:3rem}

/* ===== BLOG HERO (LIST PAGE) ===== */
.blog-hero{
  min-height:38vh;
  display:flex;flex-direction:column;align-items:center;
  justify-content:center;text-align:center;
  padding:9rem 2rem 4rem;
  position:relative;overflow:hidden;
}
.blog-hero::before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 30%,rgba(59,130,246,.1),transparent 60%),
    radial-gradient(ellipse 50% 40% at 20% 80%,rgba(0,212,255,.05),transparent 60%);
  pointer-events:none;
}
.blog-hero-grid{
  position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(rgba(0,212,255,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,212,255,.025) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,black 30%,transparent 80%);
  opacity:.7;
}
.blog-hero .tag{margin-bottom:1.3rem;animation:up3d .6s ease both}
.blog-hero .sh{animation:up3d .6s ease .1s both}
.blog-hero .sp{animation:up3d .6s ease .2s both;margin-bottom:0;text-align:center}

/* ===== BLOG GRID (LIST PAGE) ===== */
.blog-grid-section{padding:2rem 2rem 6rem}
.blog-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:1.4rem;
}

/* ===== BLOG CARD ===== */
.blog-card{
  background:linear-gradient(145deg,var(--card2),#080f20);
  border:1px solid var(--b1);border-radius:18px;
  overflow:hidden;cursor:pointer;
  transition:border-color .3s,transform .3s var(--ease3d),box-shadow .3s;
  transform:perspective(800px) rotateX(0) translateZ(0);
  text-decoration:none;color:inherit;
  display:block;
}
.blog-card:hover{
  border-color:var(--b2);
  box-shadow:0 20px 60px rgba(0,0,0,.45),0 0 0 1px rgba(96,165,250,.1);
  transform:perspective(800px) translateY(-4px) translateZ(8px);
}
.bc-thumb{
  width:100%;height:200px;object-fit:cover;display:block;
  transition:transform .5s var(--ease3d);
}
.blog-card:hover .bc-thumb{transform:scale(1.04)}
.bc-thumb-placeholder{
  width:100%;height:200px;
  background:linear-gradient(135deg,var(--card3),var(--card));
  display:flex;align-items:center;justify-content:center;
  color:var(--dimmer);
}
.bc-body{padding:1.5rem 1.6rem 1.7rem}
.bc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:.85rem;gap:.5rem;flex-wrap:wrap}
.bc-lang{
  font-size:.63rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  background:rgba(96,165,250,.07);border:1px solid var(--b2);
  border-radius:5px;padding:.2rem .55rem;color:var(--cyan);flex-shrink:0;
}
.bc-date{font-size:.7rem;color:var(--dimmer);font-weight:500}
.bc-title{
  font-size:1.12rem;font-weight:800;letter-spacing:-.015em;
  margin-bottom:.5rem;line-height:1.3;
  transition:color .2s;
}
.blog-card:hover .bc-title{color:var(--cyan2)}
.bc-excerpt{
  color:var(--sub);font-size:.8rem;line-height:1.75;
  overflow:hidden;display:-webkit-box;
  -webkit-line-clamp:3;-webkit-box-orient:vertical;
  margin-bottom:1.1rem;
}
.bc-footer{display:flex;align-items:center;justify-content:space-between}
.bc-read{
  display:inline-flex;align-items:center;gap:.3rem;
  color:var(--cyan);font-size:.78rem;font-weight:700;
  transition:gap .2s;
}
.blog-card:hover .bc-read{gap:.5rem}
.bc-read svg{display:block;flex-shrink:0}
.bc-photos-count{
  font-size:.68rem;color:var(--dimmer);font-weight:500;
  display:flex;align-items:center;gap:.3rem;
}
.bc-photos-count svg{display:block}

/* ===== LOADING / EMPTY ===== */
.b-loading{
  display:flex;flex-direction:column;align-items:center;
  justify-content:center;padding:5rem 2rem;gap:1rem;
  color:var(--sub);font-size:.9rem;font-weight:600;
}
.spin{
  display:inline-block;width:28px;height:28px;
  border:2px solid var(--b1);border-top-color:var(--cyan);
  border-radius:50%;animation:rot .8s linear infinite;
}
.b-empty{
  text-align:center;padding:5rem 2rem;
  color:var(--sub);
}
.b-empty-ic{
  width:60px;height:60px;border-radius:16px;
  background:rgba(96,165,250,.06);border:1px solid var(--b1);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 1.3rem;color:var(--dim);
}
.b-empty-t{font-size:.95rem;font-weight:800;margin-bottom:.4rem}
.b-empty-d{font-size:.82rem;color:var(--dimmer)}

/* ===== BLOG DETAIL PAGE ===== */
#blogDetail{animation:fadeIn .5s ease}

.bd-hero{
  min-height:55vh;
  display:flex;align-items:flex-end;
  position:relative;overflow:hidden;
  padding-top:80px;
}
.bd-hero-img{
  position:absolute;inset:0;
  background:linear-gradient(145deg,var(--bg3),var(--card));
}
.bd-hero-img img{
  width:100%;height:100%;object-fit:cover;
  opacity:.45;
  transition:transform 8s ease;
}
.bd-hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,
    rgba(2,4,15,.2) 0%,
    rgba(2,4,15,.5) 50%,
    rgba(2,4,15,.92) 100%);
}
.bd-hero-content{
  position:relative;z-index:5;
  width:100%;max-width:860px;
  margin:0 auto;
  padding:0 2rem 3.5rem;
}
.bd-back-btn{
  display:inline-flex;align-items:center;gap:.4rem;
  color:var(--sub);text-decoration:none;
  font-size:.8rem;font-weight:600;margin-bottom:1.5rem;
  padding:.35rem .75rem;border:1px solid var(--b1);border-radius:7px;
  background:rgba(0,0,0,.3);backdrop-filter:blur(10px);
  transition:all .2s;
}
.bd-back-btn:hover{color:var(--cyan2);border-color:var(--b2)}
.bd-back-btn svg{display:block}
.bd-meta{display:flex;align-items:center;gap:.7rem;flex-wrap:wrap;margin-bottom:1rem}
.bd-lang-badge{
  font-size:.65rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  background:rgba(96,165,250,.1);border:1px solid var(--b2);
  border-radius:6px;padding:.22rem .65rem;color:var(--cyan);
}
.bd-date{font-size:.78rem;color:var(--sub);font-weight:500}
.bd-dot{width:3px;height:3px;border-radius:50%;background:var(--dimmer);flex-shrink:0}
.bd-title{
  font-size:clamp(1.8rem,4vw,3rem);font-weight:800;
  letter-spacing:-.025em;line-height:1.1;
  text-shadow:0 2px 20px rgba(0,0,0,.5);
}

/* ===== BLOG DETAIL BODY ===== */
.bd-body{
  max-width:860px;margin:0 auto;
  padding:3.5rem 2rem 6rem;
}

/* Photo Gallery */
.bd-gallery{margin-bottom:3rem}
.bd-gallery-title{
  font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--neon);margin-bottom:1.2rem;
  display:flex;align-items:center;gap:.7rem;
}
.bd-gallery-title::after{
  content:'';flex:1;height:1px;
  background:linear-gradient(90deg,var(--b2),transparent);
}
.bd-gallery-grid{
  display:grid;gap:.8rem;
  border-radius:14px;overflow:hidden;
}
.bd-gallery-grid.g1{grid-template-columns:1fr}
.bd-gallery-grid.g2{grid-template-columns:1fr 1fr}
.bd-gallery-grid.g3,.bd-gallery-grid.g-many{grid-template-columns:repeat(3,1fr)}
.bd-gallery-grid.g-many .gallery-img:first-child{
  grid-column:1 / -1;max-height:380px;
}
.gallery-img{
  width:100%;height:260px;object-fit:cover;display:block;
  border-radius:10px;cursor:pointer;
  transition:transform .3s var(--ease3d),filter .3s,box-shadow .3s;
  background:var(--card3);
}
.gallery-img:hover{
  transform:scale(1.02);
  filter:brightness(1.08);
  box-shadow:0 8px 30px rgba(0,0,0,.4);
  z-index:2;position:relative;
}
.bd-gallery-grid.g1 .gallery-img{height:400px}

/* Description */
.bd-desc-section{margin-bottom:3rem}
.bd-desc-title{
  font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--neon);margin-bottom:1.2rem;
  display:flex;align-items:center;gap:.7rem;
}
.bd-desc-title::after{content:'';flex:1;height:1px;background:linear-gradient(90deg,var(--b2),transparent)}
.bd-desc-text{
  color:var(--sub);font-size:.92rem;line-height:2;
  white-space:pre-wrap;word-break:break-word;
  background:var(--card);border:1px solid var(--b1);
  border-radius:14px;padding:1.8rem 2rem;
}

/* Links */
.bd-links-section{margin-bottom:2rem}
.bd-links-title{
  font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--neon);margin-bottom:1.1rem;
  display:flex;align-items:center;gap:.7rem;
}
.bd-links-title::after{content:'';flex:1;height:1px;background:linear-gradient(90deg,var(--b2),transparent)}
.bd-links-grid{display:flex;flex-direction:column;gap:.6rem}
.bd-link-item{
  display:flex;align-items:center;gap:.6rem;
  background:var(--card);border:1px solid var(--b1);
  border-radius:9px;padding:.75rem 1rem;
  text-decoration:none;color:var(--sub);
  font-size:.82rem;font-weight:600;
  transition:all .2s var(--ease3d);
  overflow:hidden;word-break:break-all;
}
.bd-link-item svg{display:block;flex-shrink:0;color:var(--cyan)}
.bd-link-item:hover{
  border-color:var(--b2);color:var(--cyan2);
  background:rgba(96,165,250,.06);
  transform:translateX(3px);
}

/* ===== LIGHTBOX ===== */
.lightbox-ov{
  display:none;position:fixed;inset:0;z-index:1000;
  background:rgba(2,4,15,.95);backdrop-filter:blur(20px);
  align-items:center;justify-content:center;
  cursor:zoom-out;
}
.lightbox-ov.show{display:flex;animation:fadeIn .2s ease}
.lightbox-img{
  max-width:90vw;max-height:88vh;
  border-radius:10px;object-fit:contain;
  box-shadow:0 40px 100px rgba(0,0,0,.7);
  cursor:default;
}
.lightbox-close{
  position:fixed;top:1.5rem;right:1.5rem;
  background:rgba(255,255,255,.08);border:1px solid var(--b2);
  border-radius:10px;width:40px;height:40px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  color:var(--sub);font-size:1rem;font-weight:700;
  transition:all .2s;z-index:1001;
}
.lightbox-close:hover{color:var(--text);background:rgba(255,255,255,.14)}
.lightbox-nav{
  position:fixed;top:50%;transform:translateY(-50%);
  background:rgba(0,0,0,.5);border:1px solid var(--b1);
  border-radius:10px;width:40px;height:60px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  color:var(--sub);font-size:1.2rem;transition:all .2s;z-index:1001;
}
.lightbox-nav:hover{color:var(--text);border-color:var(--b2);background:rgba(0,0,0,.7)}
.lightbox-prev{left:1.2rem}
.lightbox-next{right:1.2rem}

/* ===== ERROR STATE ===== */
.bd-error{
  max-width:440px;margin:8rem auto 0;text-align:center;padding:3rem 2rem;
}
.bd-error-ic{
  width:64px;height:64px;border-radius:16px;
  background:rgba(248,113,113,.08);border:1px solid rgba(248,113,113,.2);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 1.3rem;color:#f87171;
}
.bd-error-ic svg{display:block}
.bd-error-t{font-size:1.1rem;font-weight:800;margin-bottom:.5rem}
.bd-error-d{color:var(--sub);font-size:.85rem;margin-bottom:1.8rem;line-height:1.7}

/* ===== FOOTER ===== */
footer{
  background:var(--bg2);border-top:1px solid var(--b1);
  padding:2.5rem 2rem;text-align:center;position:relative;z-index:10;
}
footer::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--neon),transparent);
  opacity:.3;
}
.f-name{font-size:1.1rem;font-weight:800;display:block;margin-bottom:.8rem;
  text-shadow:0 0 20px rgba(96,165,250,.3)}
.f-rule{width:40px;height:1px;background:linear-gradient(90deg,transparent,var(--neon),transparent);
  margin:.9rem auto;box-shadow:0 0 8px var(--neon)}
.f-copy{color:var(--dimmer);font-size:.76rem;line-height:2.1;font-weight:500}
.f-copy strong{color:var(--dim)}

/* ===== REVEAL ANIMATION ===== */
.reveal{
  opacity:0;transform:translateY(24px);
  transition:opacity .65s var(--ease3d),transform .65s var(--ease3d);
}
.reveal.in{opacity:1;transform:translateY(0)}

/* ===== RESPONSIVE ===== */
@media(max-width:860px){
  .b-nav{padding:.85rem 1.4rem}
  section{padding:4rem 1.2rem}
  .blog-grid-section{padding:1.5rem 1.2rem 5rem}
  .blog-grid{grid-template-columns:1fr}
  .bd-hero-content{padding:0 1.2rem 2.5rem}
  .bd-body{padding:2.5rem 1.2rem 5rem}
  .bd-gallery-grid.g3,.bd-gallery-grid.g-many{grid-template-columns:repeat(2,1fr)}
  .bd-gallery-grid.g-many .gallery-img:first-child{max-height:240px}
}
@media(max-width:540px){
  .blog-grid{grid-template-columns:1fr}
  .bd-gallery-grid.g2,.bd-gallery-grid.g3,.bd-gallery-grid.g-many{grid-template-columns:1fr}
  .bd-gallery-grid.g-many .gallery-img:first-child{grid-column:1}
  .gallery-img{height:200px}
  .lightbox-prev{left:.4rem}
  .lightbox-next{right:.4rem}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}