@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

/* ── Design Tokens (dark default) ──────────────── */
:root {
  --bg:       #0b0b10;
  --sf:       rgba(255,255,255,0.055);
  --sf-h:     rgba(255,255,255,0.090);
  --sf-a:     rgba(255,255,255,0.130);
  --bd:       rgba(255,255,255,0.082);
  --bd-h:     rgba(255,255,255,0.150);
  --tx:       #e3e3ea;
  --tx2:      rgba(227,227,234,0.50);
  --tx3:      rgba(227,227,234,0.28);
  --ac:       #9d9bfa;
  --ac-dim:   rgba(157,155,250,0.20);
  --ac2:      #22d3ee;
  --ac2-dim:  rgba(34,211,238,0.15);
  --ac3:      #4ade80;
  --ac4:      #fb923c;
  --blur:     blur(22px) saturate(160%);
  --ease:     cubic-bezier(.16,1,.3,1);
  --r-pill:   9999px;
  --r-lg:     18px;
  --r-md:     12px;
  --w:        860px;
}
[data-theme="light"] {
  --bg:     #f2f2f6;
  --sf:     rgba(255,255,255,0.68);
  --sf-h:   rgba(255,255,255,0.85);
  --sf-a:   rgba(255,255,255,0.96);
  --bd:     rgba(0,0,0,0.07);
  --bd-h:   rgba(0,0,0,0.13);
  --tx:     #18181f;
  --tx2:    rgba(24,24,31,0.52);
  --tx3:    rgba(24,24,31,0.30);
  --ac:     #6461e8;
  --ac-dim: rgba(100,97,232,0.18);
  --ac2:    #0891b2;
  --ac2-dim:rgba(8,145,178,0.12);
  --ac3:    #16a34a;
  --ac4:    #ea580c;
}

/* ── Reset ──────────────────────────────────────── */
*,*::before,*::after { box-sizing:border-box; margin:0; padding:0 }
html { scroll-behavior:smooth }
body {
  font-family:'Plus Jakarta Sans',sans-serif;
  font-size:16px; line-height:1.65;
  color:var(--tx); background:var(--bg);
  min-height:100vh; -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(ellipse 55% 50% at 5% 10%,  rgba(128,116,255,.13) 0%, transparent 60%),
    radial-gradient(ellipse 45% 45% at 95% 88%, rgba(34,211,238,.09) 0%, transparent 55%),
    radial-gradient(ellipse 38% 38% at 52% 52%, rgba(74,222,128,.04) 0%, transparent 50%);
  background-attachment:fixed;
}
a { color:inherit; text-decoration:none }
img { display:block; max-width:100% }

/* ── Dot grid overlay ─────────────────────────── */
body::before {
  content:''; position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image: radial-gradient(circle, rgba(157,155,250,.18) 1px, transparent 1px);
  background-size: 28px 28px;
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, black 10%, transparent 72%);
  mask-image:        radial-gradient(ellipse 90% 80% at 50% 40%, black 10%, transparent 72%);
}
[data-theme="light"] body::before {
  background-image: radial-gradient(circle, rgba(100,97,232,.12) 1px, transparent 1px);
}

/* ── Z-stack ─────────────────────────────────────── */
main, .footer { position:relative; z-index:1 }
.nav { z-index:999 }

/* ── Animated background orbs ───────────────────── */
.bg-orb {
  position:fixed; pointer-events:none; border-radius:50%;
  filter:blur(88px); will-change:transform; z-index:0;
  animation:orb-float 12s ease-in-out infinite;
}
@keyframes orb-float {
  0%,100% { transform:translate(0,0) scale(1) }
  33%      { transform:translate(38px,-48px) scale(1.08) }
  66%      { transform:translate(-28px,28px) scale(0.93) }
}

/* ── Noise grain overlay ─────────────────────────── */
body::after {
  content:''; position:fixed; inset:0; z-index:998; pointer-events:none;
  opacity:.022;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size:200px;
}

/* ── Floating Pill Nav ──────────────────────────── */
.nav {
  position:fixed; top:16px; left:50%; transform:translateX(-50%);
  z-index:999;
  display:flex; align-items:center; gap:3px;
  padding:7px 14px;
  background:rgba(10,10,18,.76);
  -webkit-backdrop-filter:var(--blur); backdrop-filter:var(--blur);
  border:1px solid var(--bd-h);
  border-radius:var(--r-pill);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10), 0 8px 40px rgba(0,0,0,.55);
  white-space:nowrap; user-select:none;
}
[data-theme="light"] .nav { background:rgba(238,238,246,.82) }

.nav-logo { display:flex; align-items:center; gap:8px; padding:4px 14px }
.nav-logo img { height:32px; width:32px; object-fit:contain; border-radius:5px }
.nav-logo span { font-size:14px; font-weight:800; letter-spacing:-.02em; color:var(--tx) }

.nav-sep { width:1px; height:16px; background:var(--bd-h); margin:0 3px; flex-shrink:0 }

.nav-links { display:flex; gap:1px }
.nav-link {
  position:relative;
  font-size:13px; font-weight:500; padding:7px 16px;
  border-radius:var(--r-pill); color:var(--tx2);
  transition:color .15s, background .15s;
}
.nav-link:hover { color:var(--tx); background:var(--sf) }
.nav-link.active { color:var(--tx); background:var(--sf-a) }

.nav-actions { display:flex; gap:2px; margin-left:2px }
.nav-btn {
  display:flex; align-items:center; justify-content:center;
  width:34px; height:34px; border:none; border-radius:var(--r-pill);
  background:transparent; color:var(--tx2); cursor:pointer;
  font-size:11px; font-family:inherit; font-weight:600; letter-spacing:.3px;
  transition:color .15s, background .15s;
}
.nav-btn:hover { color:var(--tx); background:var(--sf) }
.nav-btn svg { pointer-events:none }

/* ── Layout ─────────────────────────────────────── */
.wrap { width:100%; max-width:var(--w); margin:0 auto; padding:0 clamp(18px,4vw,32px) }
.page { padding-top:88px; padding-bottom:80px }

/* ── Hero ───────────────────────────────────────── */
.hero { padding:92px 0 72px; position:relative; overflow:hidden }
/* Rotating dashed outer ring */
.hero::before {
  content:''; position:absolute; right:-20px; top:50%;
  width:320px; height:320px; border-radius:50%; pointer-events:none;
  border:1px dashed rgba(157,155,250,.22);
  animation:ring-spin 28s linear infinite;
}
/* Radial glow orb */
.hero::after {
  content:''; position:absolute; right:20px; top:50%; transform:translateY(-50%);
  width:320px; height:320px; border-radius:50%; pointer-events:none;
  background:radial-gradient(circle, rgba(157,155,250,.18) 0%, rgba(34,211,238,.10) 45%, transparent 70%);
  animation:hero-pulse 5s ease-in-out infinite;
}
@keyframes hero-pulse {
  0%,100% { opacity:.55; transform:translateY(-50%) scale(1) }
  50%      { opacity:1;   transform:translateY(-50%) scale(1.14) }
}
@keyframes ring-spin {
  from { transform:translateY(-50%) rotate(0deg) }
  to   { transform:translateY(-50%) rotate(360deg) }
}
/* Inner counter-rotating ring (via sibling element) */
.hero-rings {
  position:absolute; right:-20px; top:50%; transform:translateY(-50%);
  width:320px; height:320px; pointer-events:none;
}
.hero-rings::before {
  content:''; position:absolute; inset:55px; border-radius:50%;
  border:1px solid rgba(34,211,238,.18);
  animation:ring-spin 18s linear infinite reverse;
}
.hero-rings::after {
  content:''; position:absolute; inset:105px; border-radius:50%;
  border:1px dashed rgba(74,222,128,.15);
  animation:ring-spin 12s linear infinite;
}
.hero-kicker {
  font-size:11px; font-weight:700; letter-spacing:3px; text-transform:uppercase;
  color:var(--ac); margin-bottom:22px;
  display:inline-flex; align-items:center; gap:10px;
}
.hero-kicker::before {
  content:''; display:block; width:22px; height:1.5px;
  background:var(--ac); border-radius:2px; flex-shrink:0;
}
.hero-h1 {
  font-size:clamp(2.4rem,5.5vw,4rem); font-weight:800;
  line-height:1.08; letter-spacing:-.04em; margin-bottom:18px;
  background:linear-gradient(130deg, #edeaff 0%, var(--ac) 38%, #22d3ee 72%, #4ade80 100%);
  -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent; color:transparent;
}
[data-theme="light"] .hero-h1 {
  background:linear-gradient(130deg, #3730a3 0%, #6d28d9 38%, #0e7490 72%, #047857 100%);
  -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero-sub {
  font-size:16px; line-height:1.75; color:var(--tx2);
  max-width:460px; text-wrap:pretty; margin-bottom:36px;
}
.hero-btns { display:flex; gap:10px; flex-wrap:wrap }

/* ── Buttons ─────────────────────────────────────── */
.btn-p, .btn-g {
  display:inline-flex; align-items:center; gap:6px;
  font-family:inherit; font-size:14px; font-weight:600;
  padding:9px 20px; border-radius:var(--r-pill); border:none;
  cursor:pointer; text-decoration:none;
  transition:transform .22s var(--ease), box-shadow .22s var(--ease);
}
.btn-p {
  background:linear-gradient(130deg, var(--ac) 0%, #22d3ee 100%);
  color:#0b0b10;
  box-shadow:0 4px 18px rgba(157,155,250,.30), 0 0 0 1px rgba(255,255,255,.1);
}
.btn-p:hover { transform:translateY(-1px); box-shadow:0 8px 28px rgba(157,155,250,.40), 0 0 0 1px rgba(255,255,255,.15) }
.btn-g {
  background:var(--sf); color:var(--tx); border:1px solid var(--bd-h);
  -webkit-backdrop-filter:var(--blur); backdrop-filter:var(--blur);
}
.btn-g:hover { transform:translateY(-1px); background:var(--sf-h) }

/* ── Glass Card ─────────────────────────────────── */
.card {
  position:relative; overflow:hidden;
  background:var(--sf);
  -webkit-backdrop-filter:var(--blur); backdrop-filter:var(--blur);
  border:1px solid var(--bd); border-radius:var(--r-lg);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07), 0 4px 20px rgba(0,0,0,.18);
  transition:transform .22s var(--ease), background .15s, border-color .15s, box-shadow .22s;
}
.card::before {
  content:''; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(110deg, transparent 35%, rgba(255,255,255,.055) 50%, transparent 65%);
  transform:translateX(-100%); transition:transform .55s var(--ease);
}
.card:hover::before { transform:translateX(100%) }
.card:hover {
  transform:translateY(-3px); background:var(--sf-h); border-color:var(--bd-h);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12), 0 12px 40px rgba(0,0,0,.28), 0 0 48px var(--ac-dim);
}

/* ── Route Cards (index) ─────────────────────────── */
.route-grid { display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:56px }
.route-card { display:flex; flex-direction:column; gap:7px; padding:28px; text-decoration:none }
.route-kicker {
  font-size:10px; font-weight:700; letter-spacing:2.5px; text-transform:uppercase; color:var(--ac)
}
.route-title { font-size:17px; font-weight:700; color:var(--tx) }
.route-desc { font-size:13.5px; line-height:1.6; color:var(--tx2); text-wrap:pretty }
.route-arrow {
  font-size:18px; color:var(--ac); margin-top:auto; padding-top:16px;
  transition:transform .22s var(--ease);
}
.route-card:hover .route-arrow { transform:translate(4px,-4px) }
.route-card:hover { box-shadow:inset 0 1px 0 rgba(255,255,255,.14), 0 14px 48px rgba(0,0,0,.3), 0 0 60px var(--ac-dim) }
.route-card:nth-child(1) .route-kicker { color:var(--ac) }
.route-card:nth-child(1) .route-arrow  { color:var(--ac) }
.route-card:nth-child(2) .route-kicker { color:var(--ac2) }
.route-card:nth-child(2) .route-arrow  { color:var(--ac2) }
.route-card:nth-child(2):hover { box-shadow:inset 0 1px 0 rgba(255,255,255,.14), 0 14px 48px rgba(0,0,0,.3), 0 0 60px var(--ac2-dim) }

/* ── Section Header ──────────────────────────────── */
.sec-kicker {
  font-size:11px; font-weight:700; letter-spacing:2.5px;
  text-transform:uppercase; color:var(--ac); margin-bottom:8px;
  display:inline-flex; align-items:center; gap:10px;
}
.sec-kicker::before {
  content:''; display:block; width:18px; height:1.5px;
  background:var(--ac); border-radius:2px; flex-shrink:0;
}
.sec-h2 {
  font-size:clamp(1.6rem,3vw,2.2rem); font-weight:700;
  letter-spacing:-.03em; color:var(--tx); margin-bottom:32px;
}
.section { padding:64px 0 }

/* ── Skills ──────────────────────────────────────── */
.skill-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(240px,1fr)); gap:12px }
.skill-card { padding:22px; border-top:2px solid var(--bd) }
.skill-card:nth-child(1) { border-top-color:var(--ac) }
.skill-card:nth-child(2) { border-top-color:var(--ac2) }
.skill-card:nth-child(3) { border-top-color:var(--ac3) }
.skill-card:nth-child(4) { border-top-color:var(--ac4) }
.skill-name { font-size:15px; font-weight:700; color:var(--tx); margin-bottom:8px }
.skill-desc { font-size:13px; line-height:1.65; color:var(--tx2) }
.tags { display:flex; flex-wrap:wrap; gap:5px; margin-top:12px }
.tag {
  font-size:11px; font-weight:500; padding:3px 9px;
  border-radius:var(--r-pill); background:var(--sf-a); border:1px solid var(--bd); color:var(--tx2);
}

/* ── Projects ─────────────────────────────────────── */
.proj-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(270px,1fr)); gap:12px }
.proj-card { padding:22px }
.proj-title { font-size:15px; font-weight:700; color:var(--tx); margin-bottom:8px }
.proj-desc { font-size:13px; line-height:1.65; color:var(--tx2); text-wrap:pretty }

/* ── Blog list ───────────────────────────────────── */
.post-list { display:flex; flex-direction:column }
.post-item {
  display:grid; grid-template-columns:76px 1fr auto;
  align-items:baseline; gap:16px;
  padding:16px 0; border-bottom:1px solid var(--bd);
  text-decoration:none;
  transition:padding-left .2s var(--ease);
}
.post-item:first-child { border-top:1px solid var(--bd) }
.post-item:hover { padding-left:8px; border-bottom-color:var(--ac) }
.post-item:first-child:hover { border-top-color:var(--ac) }
.post-date { font-size:12px; font-weight:500; color:var(--tx3); font-variant-numeric:tabular-nums }
.post-title { font-size:15px; font-weight:600; color:var(--tx); text-wrap:pretty }
.post-item:hover .post-title { color:#fff }
[data-theme="light"] .post-item:hover .post-title { color:#0b0b14 }
.post-chip {
  font-size:11px; padding:2px 8px; border-radius:var(--r-pill);
  background:var(--sf-a); color:var(--tx3); border:1px solid var(--bd);
}

/* ── Post content ────────────────────────────────── */
.post-header { padding:72px 0 36px }
.post-h1 {
  font-size:clamp(1.8rem,4vw,3rem); font-weight:800;
  letter-spacing:-.04em; line-height:1.15; text-wrap:pretty; color:var(--tx);
}
.post-meta { font-size:13px; color:var(--tx3); margin-top:14px }
.back-link {
  display:inline-flex; align-items:center; gap:6px;
  font-size:14px; font-weight:500; color:var(--tx2); margin-bottom:32px;
  transition:color .15s;
}
.back-link:hover { color:var(--tx) }
.prose { max-width:680px; font-size:17px; line-height:1.85; color:var(--tx) }
.prose h2 { font-size:1.4rem; font-weight:700; margin:2.2em 0 .7em; letter-spacing:-.02em }
.prose h3 { font-size:1.15rem; font-weight:600; margin:1.8em 0 .5em }
.prose p { margin-bottom:1.3em }
.prose a { color:var(--ac); border-bottom:1px solid var(--ac-dim) }
.prose code {
  font-size:.86em; padding:2px 6px; border-radius:5px;
  background:var(--sf-a); border:1px solid var(--bd);
}
.prose pre {
  background:rgba(0,0,0,.3); border:1px solid var(--bd); border-radius:var(--r-md);
  padding:20px; overflow-x:auto; margin:1.6em 0;
}
.prose pre code { background:none; border:none; padding:0; font-size:14px }

/* ── States ──────────────────────────────────────── */
.state-wrap { padding:64px 0; text-align:center; color:var(--tx2); font-size:15px }
.dots { display:inline-flex; gap:5px; align-items:center }
.dot {
  width:5px; height:5px; border-radius:50%; background:var(--ac);
  animation:blink 1.2s ease infinite;
}
.dot:nth-child(2) { animation-delay:.2s }
.dot:nth-child(3) { animation-delay:.4s }
@keyframes blink {
  0%,100% { opacity:.25; transform:scale(.75) }
  50%      { opacity:1;   transform:scale(1) }
}

/* ── Footer ──────────────────────────────────────── */
.footer { padding:28px 0; border-top:1px solid var(--bd) }
.footer-in {
  display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap
}
.footer-copy { font-size:13px; color:var(--tx3) }
.footer-icp { font-size:12px; color:var(--tx3); transition:color .15s }
.footer-icp:hover { color:var(--tx2) }

/* ── Fade-up entry ───────────────────────────────── */
.fu { opacity:0; transform:translateY(20px); transition:opacity .65s var(--ease), transform .65s var(--ease) }
.fu.in { opacity:1; transform:none }
.fu:nth-child(2) { transition-delay:.09s }
.fu:nth-child(3) { transition-delay:.18s }
.fu:nth-child(4) { transition-delay:.27s }
.fu:nth-child(5) { transition-delay:.36s }

/* ── Shimmer link underline ──────────────────────── */
.nav-link::after {
  content:''; position:absolute; bottom:3px; left:50%; right:50%;
  height:1px; background:var(--ac); border-radius:2px;
  transition:left .22s var(--ease), right .22s var(--ease); opacity:.7;
}
.nav-link:hover::after { left:13px; right:13px }
.nav-link.active::after { left:13px; right:13px; opacity:1 }

/* ── Admin (standalone) ──────────────────────────── */
.adm-body { background:var(--bg); min-height:100vh; padding:40px clamp(18px,4vw,32px) }
.adm-nav {
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:12px 20px; background:var(--sf);
  -webkit-backdrop-filter:var(--blur); backdrop-filter:var(--blur);
  border:1px solid var(--bd); border-radius:var(--r-lg);
  margin-bottom:32px;
}
.adm-brand { font-size:14px; font-weight:800; letter-spacing:-.02em; display:flex; align-items:center; gap:8px }
.adm-brand img { height:22px; width:22px; object-fit:contain; border-radius:3px }
.adm-box { width:min(960px,100%); margin:0 auto }
.adm-form { display:grid; gap:12px }
.field {
  width:100%; border:1px solid var(--bd); border-radius:var(--r-md);
  padding:11px 14px; color:var(--tx); background:var(--sf);
  font-family:inherit; font-size:14px; outline:none; transition:border-color .15s;
}
.field:focus { border-color:var(--ac) }
textarea.field { min-height:100px; resize:vertical }
.adm-list { display:flex; flex-direction:column; gap:8px; margin-top:20px }
.adm-item {
  display:flex; justify-content:space-between; align-items:center;
  gap:16px; padding:14px 18px;
}
.adm-item-meta { display:flex; flex-direction:column; gap:3px }
.adm-item-title { font-size:14px; font-weight:600; color:var(--tx) }
.adm-item-slug { font-size:12px; color:var(--tx3) }
.hidden { display:none!important }

/* ── Responsive ──────────────────────────────────── */
@media (max-width:640px) {
  .nav-logo span { display:none }
  .nav-sep:first-of-type { display:none }
  .route-grid { grid-template-columns:1fr }
  .skill-grid, .proj-grid { grid-template-columns:1fr }
  .post-item { grid-template-columns:60px 1fr }
  .post-chip { display:none }
}
@media (prefers-reduced-motion:reduce) {
  *,*::before,*::after { animation-duration:.01ms!important; transition-duration:.01ms!important }
}