/* ═══════════════════════════════════════════
   THEME VARIABLES
═══════════════════════════════════════════ */
:root {
  --yellow: #e6b800;
  --ydim:   #c9a014;
  --yglow:  rgba(230,184,0,.15);
}

[data-theme="light"] {
  --bg:          #faf7f2;
  --bg2:         #f2ede4;
  --bg3:         #e8e1d5;
  --border:      #d8d0c2;
  --text:        #1a1814;
  --muted:       #7a7060;
  --topbar-bg:   #1a1814;
  --topbar-text: #a89e8c;
  --nav-bg:      rgba(250,247,242,0.95);
  --nav-border:  #d8d0c2;
}

[data-theme="dark"] {
  --bg:          #181a1b;
  --bg2:         #1f2224;
  --bg3:         #252829;
  --border:      #2e3235;
  --text:        #e8e2d5;
  --muted:       #7a7a6e;
  --topbar-bg:   #111314;
  --topbar-text: #5a5a52;
  --nav-bg:      rgba(24,26,27,0.95);
  --nav-border:  #2e3235;
}

/* ═══════════════════════════════════════════
   BASE
═══════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Mono', monospace;
  font-size: 15px;
  line-height: 1.7;
  overflow-x: hidden;
  transition: background .3s, color .3s;
}

/* NOISE OVERLAY */
body::after {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none; z-index: 9000; opacity: .022;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px;
}

/* ═══════════════════════════════════════════
   TOP UTILITY BAR
═══════════════════════════════════════════ */
#topbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 600;
  background: var(--topbar-bg);
  height: 34px;
}
.topbar-inner {
  max-width: 1100px; margin: 0 auto;
  padding: 0 60px; height: 100%;
  display: flex; align-items: center; justify-content: space-between;
}
.topbar-name {
  font-size: .62rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--topbar-text);
}
.topbar-controls { display: flex; align-items: center; gap: 10px; }

.lang-toggle { display: flex; border: 1px solid rgba(255,255,255,.1); overflow: hidden; }
.lang-toggle button {
  background: none; border: none;
  padding: 4px 10px;
  font-family: 'DM Mono', monospace;
  font-size: .62rem; letter-spacing: .1em; text-transform: uppercase;
  cursor: pointer; color: var(--topbar-text);
  transition: background .2s, color .2s;
}
.lang-toggle button.on { background: var(--yellow); color: #111; }

.theme-btn {
  background: none; border: 1px solid rgba(255,255,255,.1);
  padding: 4px 9px; cursor: pointer;
  font-size: .75rem; color: var(--topbar-text);
  transition: border-color .2s, color .2s; line-height: 1;
}
.theme-btn:hover { border-color: var(--yellow); color: var(--yellow); }

.resume-btn {
  padding: 4px 14px;
  border: 1px solid var(--yellow); background: transparent;
  font-family: 'DM Mono', monospace;
  font-size: .62rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--yellow); text-decoration: none;
  transition: background .2s, color .2s;
  display: inline-flex; align-items: center; gap: 6px;
}
.resume-btn:hover { background: var(--yellow); color: #111; }
.resume-btn svg {
  width: 11px; height: 11px;
  stroke: currentColor; fill: none;
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}

/* ═══════════════════════════════════════════
   MAIN NAV
═══════════════════════════════════════════ */
#mainnav {
  position: fixed; top: 34px; left: 0; right: 0;
  z-index: 500;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--nav-border);
  transition: background .3s;
}
.nav-inner {
  max-width: 1100px; margin: 0 auto;
  padding: 0 60px; height: 58px;
  display: flex; align-items: center; gap: 40px;
}
.logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800; font-size: 1.05rem;
  letter-spacing: .04em; color: var(--yellow); flex-shrink: 0;
}
.nav-links { display: flex; gap: 24px; }
.nav-links a {
  color: var(--muted); text-decoration: none;
  font-size: .71rem; letter-spacing: .13em; text-transform: uppercase;
  transition: color .2s; position: relative; padding: 2px 0;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 1px; background: var(--yellow);
  transform: scaleX(0); transition: transform .25s;
}
.nav-links a:hover, .nav-links a.active { color: var(--yellow); }
.nav-links a.active::after { transform: scaleX(1); }

/* ═══════════════════════════════════════════
   LAYOUT
═══════════════════════════════════════════ */
section {
  max-width: 1060px; margin: 0 auto;
  padding: 100px 60px;
}
.sec-label {
  font-size: .65rem; letter-spacing: .18em;
  text-transform: uppercase; color: var(--yellow); margin-bottom: 10px;
}
h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 800; letter-spacing: -.025em;
  line-height: 1.05; margin-bottom: 44px; color: var(--text);
}
.divider {
  max-width: 1060px; margin: 0 auto; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

/* ═══════════════════════════════════════════
   HERO
═══════════════════════════════════════════ */
#hero {
  min-height: 100vh;
  padding-top: 130px;
  display: flex; align-items: center;
}
.hero-inner {
  display: flex; align-items: center;
  justify-content: space-between; gap: 60px; width: 100%;
}
.hero-text { flex: 1; }
.hero-tag {
  font-size: .68rem; letter-spacing: .2em;
  text-transform: uppercase; color: var(--yellow); margin-bottom: 18px;
  opacity: 0; animation: fadeUp .6s .1s forwards;
}
h1 {
  font-family: 'Syne', sans-serif; font-weight: 800;
  font-size: clamp(2.8rem, 6vw, 5rem);
  line-height: .95; letter-spacing: -.03em;
  margin-bottom: 22px; color: var(--text);
  opacity: 0; animation: fadeUp .7s .22s forwards;
}
h1 .acc { color: var(--yellow); }
.hero-sub {
  max-width: 500px; color: var(--muted);
  font-size: .87rem; line-height: 1.9; margin-bottom: 40px;
  opacity: 0; animation: fadeUp .7s .35s forwards;
}
.cta {
  display: flex; gap: 12px; flex-wrap: wrap;
  opacity: 0; animation: fadeUp .7s .48s forwards;
}
.btn {
  padding: 11px 24px;
  font-family: 'DM Mono', monospace; font-size: .72rem;
  letter-spacing: .1em; text-transform: uppercase;
  border: 1.5px solid var(--yellow); background: transparent; color: var(--yellow);
  cursor: pointer; text-decoration: none; display: inline-block;
  transition: background .2s, color .2s, box-shadow .2s;
}
.btn:hover { background: var(--yellow); color: #111; box-shadow: 0 0 26px var(--yglow); }
.btn.ghost { border-color: var(--border); color: var(--muted); }
.btn.ghost:hover { background: var(--bg3); color: var(--text); box-shadow: none; }

.hero-photo {
  flex-shrink: 0; width: 220px; height: 220px;
  border-radius: 50%; border: 3px solid var(--border);
  overflow: hidden;
  opacity: 0; animation: fadeUp .7s .1s forwards;
  box-shadow: 0 8px 40px rgba(0,0,0,.12);
  transition: border-color .3s;
}
.hero-photo:hover { border-color: var(--yellow); }
.hero-photo img { width: 100%; height: 100%; object-fit: cover; }

/* ═══════════════════════════════════════════
   ABOUT
═══════════════════════════════════════════ */
.about-grid {
  display: grid; grid-template-columns: 1.1fr 1fr;
  gap: 56px; align-items: start;
}
.about-text p { color: var(--muted); font-size: .87rem; line-height: 1.85; margin-bottom: 14px; }
.about-text p strong { color: var(--text); font-weight: 500; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.chip {
  padding: 5px 12px; border: 1px solid var(--border); background: var(--bg2);
  font-size: .68rem; letter-spacing: .06em; color: var(--muted);
  transition: border-color .2s, color .2s; cursor: default;
}
.chip:hover { border-color: var(--ydim); color: var(--yellow); }
.langs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.lc {
  background: var(--bg2); border: 1px solid var(--border);
  padding: 18px 16px; transition: border-color .2s;
}
.lc:hover { border-color: var(--ydim); }
.ln { font-family: 'Syne', sans-serif; font-size: .92rem; font-weight: 700; margin-bottom: 3px; }
.ll { font-size: .65rem; color: var(--yellow); letter-spacing: .07em; }

/* ═══════════════════════════════════════════
   EDUCATION
═══════════════════════════════════════════ */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 2px;
}
.edu-card {
  background: var(--bg2); border: 1px solid var(--border);
  padding: 26px 24px; transition: border-color .25s;
}
.edu-card:hover { border-color: var(--ydim); }
.edu-date { font-size: .63rem; letter-spacing: .1em; text-transform: uppercase; color: var(--yellow); margin-bottom: 8px; }
.edu-title { font-family: 'Syne', sans-serif; font-size: .98rem; font-weight: 700; margin-bottom: 4px; line-height: 1.25; }
.edu-place { font-size: .73rem; color: var(--muted); }

/* ═══════════════════════════════════════════
   EXPERIENCE
═══════════════════════════════════════════ */
.tl { position: relative; padding-left: 28px; }
.tl::before {
  content: ''; position: absolute; left: 0; top: 8px; bottom: 8px;
  width: 1px; background: var(--border);
}
.ti { position: relative; margin-bottom: 44px; }
.ti::before {
  content: ''; position: absolute; left: -32px; top: 8px;
  width: 8px; height: 8px; border-radius: 50%;
  border: 2px solid var(--yellow); background: var(--bg);
  transition: background .2s;
}
.ti:hover::before { background: var(--yellow); }
.ti-meta { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 6px; }
.ti-date { font-size: .63rem; letter-spacing: .1em; text-transform: uppercase; color: var(--yellow); }
.ti-place { font-size: .68rem; color: var(--muted); }
.ti-title { font-family: 'Syne', sans-serif; font-size: .98rem; font-weight: 700; margin-bottom: 10px; }
.ti-list { list-style: none; padding: 0; }
.ti-list li {
  font-size: .8rem; color: var(--muted); line-height: 1.75;
  padding-left: 16px; margin-bottom: 6px; position: relative;
}
.ti-list li::before { content: '—'; position: absolute; left: 0; color: var(--yellow); font-size: .7rem; }

/* ═══════════════════════════════════════════
   ACHIEVEMENT BANNER
═══════════════════════════════════════════ */
.achievement-banner {
  display: flex; align-items: center; gap: 36px;
  background: var(--bg2); border: 1px solid var(--border);
  padding: 32px 36px; margin-bottom: 24px;
  transition: border-color .25s; position: relative; overflow: hidden;
}
.achievement-banner::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--yglow), transparent);
  pointer-events: none;
}
.achievement-banner:hover { border-color: var(--ydim); }
.ach-img-wrap {
  flex-shrink: 0; width: 90px; height: 90px;
  border-radius: 50%; border: 2px solid var(--border);
  overflow: hidden; background: var(--bg3);
}
.ach-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.ach-content { flex: 1; }
.ach-badge { font-size: .62rem; letter-spacing: .14em; text-transform: uppercase; color: var(--yellow); margin-bottom: 6px; }
.ach-title { font-family: 'Syne', sans-serif; font-size: 1.2rem; font-weight: 800; margin-bottom: 10px; line-height: 1.2; }
.ach-desc { font-size: .82rem; color: var(--muted); line-height: 1.75; margin-bottom: 14px; }
.ach-desc strong { color: var(--text); font-weight: 500; }
.ach-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.ach-tag { font-size: .62rem; letter-spacing: .07em; padding: 3px 10px; border: 1px solid var(--border); color: var(--muted); }

/* ═══════════════════════════════════════════
   PROJECTS
═══════════════════════════════════════════ */
.proj-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2px; margin-bottom: 2px;
}
.pc {
  background: var(--bg2); border: 1px solid var(--border);
  padding: 30px 26px; position: relative; overflow: hidden;
  transition: border-color .25s, transform .25s;
}
.pc::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--yglow), transparent);
  opacity: 0; transition: opacity .3s;
}
.pc:hover { border-color: var(--ydim); transform: translateY(-3px); }
.pc:hover::before { opacity: 1; }
.pn { font-size: .61rem; letter-spacing: .12em; color: var(--yellow); margin-bottom: 11px; }
.pt { font-family: 'Syne', sans-serif; font-size: 1.06rem; font-weight: 700; margin-bottom: 9px; line-height: 1.2; }
.pd { font-size: .8rem; color: var(--muted); line-height: 1.75; margin-bottom: 18px; }
.ptags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 18px; }
.ptag { font-size: .61rem; letter-spacing: .07em; padding: 3px 9px; border: 1px solid var(--border); color: var(--muted); }
.plinks { display: flex; gap: 14px; }
.plinks a { font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--yellow); text-decoration: none; transition: opacity .2s; }
.plinks a:hover { opacity: .6; }
.more-github {
  border: 1px dashed var(--border); padding: 26px 28px;
  display: flex; align-items: center; justify-content: space-between;
  transition: border-color .2s;
}
.more-github:hover { border-color: var(--ydim); }
.more-github p { font-size: .82rem; color: var(--muted); }
.more-github p strong { color: var(--text); font-weight: 500; }

/* ═══════════════════════════════════════════
   CONTACT
═══════════════════════════════════════════ */
#contact { text-align: center; display: flex; flex-direction: column; align-items: center; }
#contact h2 { margin-bottom: 12px; }
.csub { color: var(--muted); font-size: .86rem; max-width: 380px; margin: 0 auto 40px; line-height: 1.85; }
.clinks { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; }
.cl {
  padding: 11px 22px; border: 1px solid var(--border); background: var(--bg2);
  font-family: 'DM Mono', monospace; font-size: .7rem; letter-spacing: .08em;
  color: var(--muted); text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
  transition: border-color .2s, color .2s, transform .2s;
}
.cl:hover { border-color: var(--ydim); color: var(--yellow); transform: translateY(-2px); }

/* ═══════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════ */
footer {
  border-top: 1px solid var(--border);
  padding: 24px 60px;
  display: flex; justify-content: space-between; align-items: center;
}
footer p { font-size: .63rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.fdot { width: 6px; height: 6px; background: var(--yellow); border-radius: 50%; animation: blink 2.5s infinite; }

/* ═══════════════════════════════════════════
   SCROLL REVEAL
═══════════════════════════════════════════ */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ═══════════════════════════════════════════
   ANIMATIONS
═══════════════════════════════════════════ */
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: .2; } }

/* ═══════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════ */
@media (max-width: 900px) {
  .topbar-inner { padding: 0 20px; }
  .topbar-name { display: none; }
  .nav-inner { padding: 0 20px; gap: 20px; }
  .nav-links { gap: 14px; }
  .nav-links a { font-size: .65rem; }
  section { padding: 80px 22px; }
  #hero { padding-left: 22px; padding-right: 22px; }
  .hero-inner { flex-direction: column-reverse; align-items: flex-start; gap: 32px; }
  .hero-photo { width: 140px; height: 140px; }
  .about-grid { grid-template-columns: 1fr; }
  h1 { font-size: 2.5rem; }
  .achievement-banner { flex-direction: column; align-items: flex-start; gap: 20px; padding: 24px; }
  .more-github { flex-direction: column; gap: 16px; text-align: center; }
  footer { padding: 20px 22px; }
}