/* ============================================================
   Platinum Mono — dark charcoal · pure white · platinum accent
   ============================================================ */
:root {
  --bg:        #0a0b0d;
  --bg-2:      #101216;
  --bg-3:      #15181d;
  --surface:   rgba(255, 255, 255, 0.025);
  --surface-2: rgba(255, 255, 255, 0.045);
  --border:    rgba(255, 255, 255, 0.09);
  --border-2:  rgba(255, 255, 255, 0.16);
  --text:      #f3f5f8;
  --muted:     #9aa1ad;
  --faint:     #5d646f;
  /* platinum / silver accent */
  --plat-1:    #e9edf4;
  --plat-2:    #aab2c0;
  --plat-3:    #7d8593;
  --plat-grad: linear-gradient(135deg, #f4f7fb 0%, #c4ccd8 45%, #8a93a3 100%);
  --radius:    16px;
  --radius-sm: 10px;
  --maxw:      1140px;
  --ease:      cubic-bezier(0.16, 1, 0.3, 1);
  --serif:     "Space Grotesk", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
::selection { background: rgba(200, 208, 222, 0.22); color: #fff; }

body {
  background:
    radial-gradient(1100px 720px at 78% -8%, rgba(170, 178, 192, 0.07), transparent 60%),
    radial-gradient(900px 600px at -8% 12%, rgba(120, 128, 145, 0.06), transparent 58%),
    linear-gradient(180deg, #0c0e12 0%, var(--bg) 36%, #07080a 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: "Inter", system-ui, sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  cursor: default;
}

h1, h2, h3, .nav__brand { font-family: var(--serif); line-height: 1.06; letter-spacing: -0.02em; }
a { color: inherit; text-decoration: none; }
strong { color: var(--text); font-weight: 600; }

/* metallic text helper */
.metal {
  background: var(--plat-grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ============ Texture overlays ============ */
.grain {
  position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: 0.5;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.35'/%3E%3C/svg%3E");
}
.vignette {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(120% 90% at 50% 30%, transparent 55%, rgba(0,0,0,0.55) 100%);
}

/* ============ Scroll progress ============ */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0;
  background: var(--plat-grad);
  z-index: 60; box-shadow: 0 0 12px rgba(200, 208, 222, 0.5);
}

/* ============ Cursor light ============ */
.cursor-glow {
  position: fixed; top: 0; left: 0; width: 520px; height: 520px; border-radius: 50%;
  transform: translate(-50%, -50%); pointer-events: none; z-index: 2; opacity: 0;
  background: radial-gradient(circle, rgba(190, 198, 214, 0.06), transparent 62%);
  transition: opacity 0.4s;
}

/* ============ Nav ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.5rem clamp(1.2rem, 5vw, 3rem);
  transition: padding 0.4s var(--ease), background 0.4s, border-color 0.4s, backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  padding: 0.85rem clamp(1.2rem, 5vw, 3rem);
  background: rgba(10, 11, 13, 0.72);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--border);
}
.nav__brand { font-weight: 700; font-size: 1.35rem; letter-spacing: 0.02em; }
.nav__brand span { color: var(--plat-2); }
.nav__links { display: flex; gap: clamp(1.1rem, 2.6vw, 2.3rem); }
.nav__links a {
  position: relative; font-size: 0.82rem; letter-spacing: 0.04em; color: var(--muted);
  text-transform: uppercase; font-weight: 500; transition: color 0.3s;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 1px; width: 0;
  background: var(--plat-grad); transition: width 0.35s var(--ease);
}
.nav__links a:hover, .nav__links a.is-active { color: var(--text); }
.nav__links a.is-active::after, .nav__links a:hover::after { width: 100%; }

.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav__toggle span { width: 24px; height: 2px; background: var(--text); transition: transform 0.3s, opacity 0.3s; }
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Layout ============ */
main { position: relative; z-index: 3; }
.section { max-width: var(--maxw); margin: 0 auto; padding: clamp(5rem, 11vw, 9rem) clamp(1.2rem, 5vw, 3rem); }
.section__head { margin-bottom: clamp(2.4rem, 5vw, 3.6rem); }
.section__tag {
  display: inline-block; font-family: "JetBrains Mono", monospace; font-size: 0.78rem;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--plat-3); margin-bottom: 1rem;
}
.section__title { font-size: clamp(1.9rem, 4.6vw, 3rem); font-weight: 600; color: var(--text); }

/* ============ Hero ============ */
.hero {
  min-height: 100vh; display: flex; flex-direction: column; justify-content: center;
  max-width: var(--maxw); margin: 0 auto; padding: 7rem clamp(1.2rem, 5vw, 3rem) 4rem; position: relative;
}
.hero__eyebrow {
  display: flex; align-items: center; gap: 0.9rem; font-family: "JetBrains Mono", monospace;
  font-size: 0.82rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--plat-3); margin-bottom: 1.8rem;
}
.hero__eyebrow-line { width: 46px; height: 1px; background: var(--plat-3); display: inline-block; }
.hero__name {
  font-size: clamp(3rem, 11vw, 7.2rem); font-weight: 700; text-transform: uppercase;
  letter-spacing: -0.03em; line-height: 0.96; padding-bottom: 0.08em;
}
.hero__word { display: block; }
.hero__name .hero__word:last-child { background: var(--plat-grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero__rule {
  height: 1px; width: min(420px, 70vw); margin: 1.8rem 0;
  background: linear-gradient(90deg, var(--plat-1), var(--plat-3) 60%, transparent);
  transform-origin: left;
}
.hero__role {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.6rem;
  font-family: var(--serif); font-size: clamp(1.1rem, 2.6vw, 1.55rem); font-weight: 500; color: var(--text);
}
.hero__static { color: var(--faint); font-weight: 400; }
.hero__rotator { color: var(--text); }
.hero__rotator span { border-right: 2px solid var(--plat-2); padding-right: 3px; animation: caret 1s step-end infinite; }
@keyframes caret { 50% { border-color: transparent; } }
.hero__tagline { max-width: 620px; margin-top: 1.8rem; color: var(--muted); font-size: 1.06rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.6rem; }

.btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  padding: 0.9rem 1.7rem; border-radius: 999px; font-family: var(--serif); font-weight: 500;
  font-size: 0.95rem; letter-spacing: 0.01em; cursor: pointer; border: 1px solid transparent;
  transition: transform 0.25s var(--ease), background 0.3s, color 0.3s, border-color 0.3s, box-shadow 0.3s;
  will-change: transform;
}
.btn--primary { background: var(--plat-grad); color: #0a0b0d; box-shadow: 0 6px 30px -10px rgba(200, 208, 222, 0.5); }
.btn--primary:hover { box-shadow: 0 10px 40px -8px rgba(200, 208, 222, 0.7); }
.btn--ghost { background: var(--surface); color: var(--text); border-color: var(--border-2); }
.btn--ghost:hover { border-color: var(--plat-2); background: var(--surface-2); }

.hero__scroll {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.6rem;
  font-family: "JetBrains Mono", monospace; font-size: 0.7rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--faint);
}
.hero__scroll-line { width: 1px; height: 38px; background: linear-gradient(var(--plat-3), transparent); animation: scrollPulse 2s var(--ease) infinite; }
@keyframes scrollPulse { 0%,100% { opacity: 0.3; transform: scaleY(0.6); } 50% { opacity: 1; transform: scaleY(1); } }

/* ============ Stats ============ */
.stats { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(1.2rem, 5vw, 3rem); }
.stats__grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  background: var(--surface); backdrop-filter: blur(6px);
}
.stat { padding: 2rem 1.5rem; text-align: center; border-right: 1px solid var(--border); }
.stat:last-child { border-right: 0; }
.stat__num { font-family: var(--serif); font-weight: 700; font-size: clamp(2rem, 4vw, 2.8rem); background: var(--plat-grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat__label { margin-top: 0.5rem; font-size: 0.82rem; letter-spacing: 0.03em; color: var(--muted); }

/* ============ About ============ */
.about { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.about__text p { color: var(--muted); font-size: 1.06rem; margin-bottom: 1.2rem; }
.about__highlights { list-style: none; display: flex; flex-direction: column; gap: 0.9rem; }
.about__highlights li {
  display: flex; align-items: center; gap: 1rem; padding: 1rem 1.2rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 0.96rem; color: var(--text); transition: border-color 0.3s, transform 0.3s, background 0.3s;
}
.about__highlights li:hover { border-color: var(--border-2); transform: translateX(4px); background: var(--surface-2); }
.about__idx {
  flex: none; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 7px;
  font-family: "JetBrains Mono", monospace; font-size: 0.82rem; color: var(--plat-1);
  background: rgba(255,255,255,0.05); border: 1px solid var(--border-2);
}

/* ============ Skills ============ */
.skills { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
.skill-card {
  padding: 1.6rem 1.7rem; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); transition: border-color 0.3s, transform 0.35s var(--ease), background 0.3s;
}
.skill-card:hover { border-color: var(--border-2); transform: translateY(-4px); background: var(--surface-2); }
.skill-card__head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 1rem; }
.skill-card h3 { font-size: 1.2rem; font-weight: 600; }
.skill-card__pct { font-family: "JetBrains Mono", monospace; font-size: 0.85rem; color: var(--plat-3); }
.skill-card__pct::after { content: "%"; opacity: 0.6; }
.bar { height: 4px; border-radius: 999px; background: rgba(255,255,255,0.06); overflow: hidden; }
.bar span { display: block; height: 100%; width: 0; border-radius: 999px; background: var(--plat-grad); transition: width 1.3s var(--ease); }
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.2rem; }
.chips span {
  font-size: 0.78rem; padding: 0.34rem 0.74rem; border-radius: 999px; color: var(--muted);
  background: rgba(255,255,255,0.035); border: 1px solid var(--border); transition: color 0.25s, border-color 0.25s;
}
.skill-card:hover .chips span { color: var(--text); }

/* ============ Experience timeline ============ */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px; width: 1px; background: linear-gradient(var(--border-2), transparent); }
.tl { position: relative; padding-bottom: 2rem; }
.tl:last-child { padding-bottom: 0; }
.tl__dot { position: absolute; left: -2rem; top: 8px; width: 13px; height: 13px; border-radius: 50%; background: var(--bg); border: 2px solid var(--plat-2); box-shadow: 0 0 0 4px rgba(170,178,192,0.08); }
.tl__card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem 1.7rem; transition: border-color 0.3s, transform 0.35s var(--ease), background 0.3s; }
.tl__card:hover { border-color: var(--border-2); transform: translateX(5px); background: var(--surface-2); }
.tl__meta { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.5rem; }
.tl__role { font-family: var(--serif); font-size: 1.18rem; font-weight: 600; color: var(--text); }
.tl__when { font-family: "JetBrains Mono", monospace; font-size: 0.8rem; color: var(--plat-3); }
.tl__org { color: var(--plat-2); font-size: 0.92rem; margin: 0.3rem 0 0.9rem; }
.tl__card ul { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.tl__card li { position: relative; padding-left: 1.2rem; color: var(--muted); font-size: 0.96rem; }
.tl__card li::before { content: "—"; position: absolute; left: 0; color: var(--faint); }

/* ============ Projects ============ */
.projects { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
.proj {
  display: block; padding: 1.7rem 1.8rem; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); transition: border-color 0.3s, transform 0.3s var(--ease), background 0.3s, box-shadow 0.3s;
  transform-style: preserve-3d; will-change: transform;
}
.proj:hover { border-color: var(--border-2); background: var(--surface-2); box-shadow: 0 18px 50px -24px rgba(0,0,0,0.8); }
.proj__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.proj__badge { font-family: "JetBrains Mono", monospace; font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--plat-1); padding: 0.28rem 0.7rem; border: 1px solid var(--border-2); border-radius: 999px; }
.proj__arrow { font-size: 1.1rem; color: var(--muted); transition: transform 0.3s var(--ease), color 0.3s; }
.proj:hover .proj__arrow { transform: translate(4px, -4px); color: var(--text); }
.proj h3 { font-size: 1.35rem; font-weight: 600; margin-bottom: 0.6rem; }
.proj p { color: var(--muted); font-size: 0.94rem; margin-bottom: 1.1rem; }
.proj__tags { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.proj__tags span { font-size: 0.74rem; padding: 0.3rem 0.66rem; border-radius: 6px; color: var(--plat-3); background: rgba(255,255,255,0.03); border: 1px solid var(--border); }
.projects__more { text-align: center; margin-top: 2rem; color: var(--muted); }
.projects__more a { color: var(--plat-1); border-bottom: 1px solid var(--border-2); padding-bottom: 1px; transition: border-color 0.3s; }
.projects__more a:hover { border-color: var(--plat-1); }

/* ============ Contact ============ */
.section--contact { text-align: center; }
.contact__lead { max-width: 560px; margin: 0 auto 2.6rem; color: var(--muted); font-size: 1.06rem; }
.contact__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; max-width: 880px; margin: 0 auto; }
.contact__card {
  position: relative; display: flex; flex-direction: column; gap: 0.35rem; text-align: left;
  padding: 1.3rem 1.4rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  transition: border-color 0.3s, transform 0.3s var(--ease), background 0.3s;
}
a.contact__card:hover { border-color: var(--border-2); transform: translateY(-4px); background: var(--surface-2); }
.contact__k { font-family: "JetBrains Mono", monospace; font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--plat-3); }
.contact__v { font-size: 0.95rem; color: var(--text); word-break: break-word; }
.contact__arrow { position: absolute; top: 1.1rem; right: 1.2rem; color: var(--muted); transition: transform 0.3s var(--ease), color 0.3s; }
a.contact__card:hover .contact__arrow { transform: translate(3px, -3px); color: var(--text); }

/* ============ Footer ============ */
.footer { position: relative; z-index: 3; text-align: center; padding: 3rem 1.5rem; border-top: 1px solid var(--border); color: var(--faint); font-size: 0.85rem; }

/* ============ Reveal motion ============ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); transition-delay: var(--d, 0s); }
.reveal.is-in { opacity: 1; transform: none; }
.hero__rule.reveal { transform: scaleX(0); }
.hero__rule.reveal.is-in { transform: scaleX(1); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
  * { animation: none !important; }
}

/* ============ Responsive ============ */
@media (max-width: 880px) {
  .about { grid-template-columns: 1fr; }
  .skills, .projects { grid-template-columns: 1fr; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--border); }
  .contact__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .nav__links {
    position: fixed; inset: 0 0 auto auto; top: 0; height: 100vh; width: min(75vw, 300px);
    flex-direction: column; justify-content: center; gap: 1.6rem; padding: 2rem;
    background: rgba(10,11,13,0.96); backdrop-filter: blur(18px); border-left: 1px solid var(--border);
    transform: translateX(100%); transition: transform 0.4s var(--ease);
  }
  .nav__links.is-open { transform: none; }
  .nav__links a { font-size: 1rem; }
  .nav__toggle { display: flex; z-index: 51; }
  .stats__grid { grid-template-columns: 1fr; }
  .stat { border-right: 0 !important; border-bottom: 1px solid var(--border); }
  .stat:last-child { border-bottom: 0; }
  .contact__grid { grid-template-columns: 1fr; }
  .tl__meta { flex-direction: column; }
}