/* ----------------------------
   THEME + RESET
---------------------------- */
:root{
  --bg: #0b1220;
  --bg2:#0e1a33;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.09);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.70);
  --border: rgba(255,255,255,.12);
  --shadow: 0 18px 50px rgba(0,0,0,.35);

  --accent1:#6ee7ff;
  --accent2:#a78bfa;
  --accent3:#34d399;

  --radius: 18px;
  --radius2: 26px;
  --max: 1120px;

  --font: "Manrope", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

[data-theme="light"]{
  --bg: #f7f7fb;
  --bg2:#eef2ff;
  --panel: rgba(10,18,32,.06);
  --panel2: rgba(10,18,32,.09);
  --text: rgba(10,18,32,.92);
  --muted: rgba(10,18,32,.70);
  --border: rgba(10,18,32,.12);
  --shadow: 0 18px 50px rgba(10,18,32,.14);
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  background: linear-gradient(180deg, var(--bg), var(--bg2));
}

/* Keep section headings from hiding under sticky nav */
section{ scroll-margin-top: 90px; }

a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }

.container{
  width:min(var(--max), 92vw);
  margin-inline:auto;
}

.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}

.skip-link{
  position:absolute; left:-999px; top: 12px;
  background: var(--text); color: var(--bg);
  padding:10px 14px; border-radius: 999px;
}
.skip-link:focus{ left: 12px; z-index: 9999; }

/* ----------------------------
   SUBTLE PARALLAX BACKGROUND
---------------------------- */
.parallax-layer{
  position: fixed;
  inset: -20%;
  z-index: -1;
  pointer-events: none;

  background:
    radial-gradient(900px 520px at 20% 10%, rgba(167,139,250,.16), transparent 60%),
    radial-gradient(860px 520px at 80% 0%, rgba(110,231,255,.14), transparent 60%),
    radial-gradient(900px 620px at 70% 90%, rgba(52,211,153,.10), transparent 60%);
  filter: blur(18px);

  transform: translate3d(0, 0, 0);
  will-change: transform;
  opacity: .9;
}

@media (prefers-reduced-motion: reduce){
  .parallax-layer{ display:none; }
}

/* ----------------------------
   NAV
---------------------------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(12px);
  background: linear-gradient(180deg, rgba(0,0,0,.35), rgba(0,0,0,0));
  border-bottom: 1px solid var(--border);
}

.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 14px 0;
  gap: 16px;
}

.brand{
  display:flex; align-items:center; gap:10px;
  font-weight:800; letter-spacing:.10em;
}
.brand-mark{
  width: 14px; height: 14px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  box-shadow: 0 0 0 6px rgba(110,231,255,.10);
}

.nav-toggle{
  display:none;
  border:1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding:10px 12px;
  border-radius: 12px;
}

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

.nav-link{
  padding:10px 12px;
  border-radius: 12px;
  border: 1px solid transparent;
  color: var(--muted);
  transition: background .15s ease, border-color .15s ease, color .15s ease, transform .15s ease;
}
.nav-link:hover{
  border-color: var(--border);
  background: var(--panel);
  color: var(--text);
  transform: translateY(-1px);
}
.nav-link.active{
  background: linear-gradient(135deg, rgba(110,231,255,.16), rgba(167,139,250,.16));
  border-color: rgba(110,231,255,.22);
  color: var(--text);
}

.theme-toggle{
  border:1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding:10px 12px;
  border-radius: 12px;
  cursor:pointer;
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.theme-toggle:hover{
  transform: translateY(-1px);
  border-color: rgba(110,231,255,.28);
  box-shadow: 0 8px 26px rgba(110,231,255,.10);
}

/* ----------------------------
   HERO
---------------------------- */
.hero{
  position:relative;
  padding: 72px 0 44px;
  overflow:hidden;
}

.hero-bg{
  position:absolute; inset: -20%;
  background:
    radial-gradient(500px 300px at 20% 20%, rgba(110,231,255,.25), transparent 60%),
    radial-gradient(500px 320px at 70% 30%, rgba(167,139,250,.22), transparent 60%),
    radial-gradient(460px 320px at 60% 75%, rgba(52,211,153,.18), transparent 60%);
  filter: blur(18px);
  opacity:.25;
  pointer-events:none;
}

.hero-grid{
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 22px;
  align-items:start;
  position:relative;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 999px;
  color: var(--muted);
  margin:0 0 14px;
}

h1{
  font-size: clamp(2rem, 3.4vw, 3.15rem);
  line-height: 1.08;
  margin: 0 0 14px;
}

.grad{
  background: linear-gradient(135deg, var(--accent1), var(--accent2), var(--accent3));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

.lede{
  margin:0 0 18px;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 60ch;
}

.hero-cta{
  display:flex;
  gap: 12px;
  flex-wrap:wrap;
  margin: 18px 0 18px;
}

.btn{
  display:inline-flex;
  align-items:center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  transition: transform .15s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.btn:hover{
  transform: translateY(-1px);
  border-color: rgba(110,231,255,.28);
  box-shadow: 0 6px 20px rgba(110,231,255,.12);
}
.btn.primary{
  background: linear-gradient(135deg, rgba(110,231,255,.18), rgba(167,139,250,.18));
  border-color: rgba(110,231,255,.22);
}
.btn.ghost{ background: transparent; }
.btn.small{
  padding: 10px 12px;
  border-radius: 12px;
}

/* Disabled link button (placeholder links) */
.btn[aria-disabled="true"]{
  opacity: .6;
  cursor: not-allowed;
  pointer-events: none;
}

.hero-metrics{
  display:flex;
  gap: 14px;
  flex-wrap:wrap;
}
.metric{
  border:1px solid var(--border);
  background: var(--panel);
  padding: 12px 14px;
  border-radius: var(--radius);
  min-width: 180px;
}
.metric-num{ font-weight:800; font-size:1.1rem; }
.metric-label{ color: var(--muted); font-size:.95rem; }

.hero-card{
  border:1px solid var(--border);
  background: linear-gradient(180deg, var(--panel), rgba(255,255,255,.03));
  border-radius: var(--radius2);
  padding: 18px;
  box-shadow: var(--shadow);
}

/* ✅ Headshot styles (replaces the astronaut icon block) */
.profile-photo{
  width: 100%;
  max-width: 360px;
  margin: 0 auto 12px;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(110,231,255,.20);
  background: linear-gradient(135deg, rgba(110,231,255,.14), rgba(167,139,250,.14));
  box-shadow: 0 18px 50px rgba(0,0,0,.22);
}
.profile-photo img{
  width: 100%;
  height: auto;
  object-fit: cover;  
  display: block;
  transform: scale(1.02);
}

.profile-photo{
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.hero-card:hover .profile-photo{
  transform: translateY(-2px);
  border-color: rgba(110,231,255,.32);
  box-shadow: 0 24px 60px rgba(0,0,0,.28);
}
.hero-card:hover .profile-photo img{
  transform: scale(1.04);
  transition: transform .35s ease;
}


.card-title{ margin: 8px 0 8px; }
.quick-list{
  list-style:none;
  padding:0; margin: 0 0 14px;
  display:grid;
  gap: 10px;
}
.quick-list li{ color: var(--muted); display:flex; gap:10px; align-items:center; }
.card-actions{ display:flex; gap: 10px; flex-wrap:wrap; }
.pill{
  display:inline-flex; align-items:center; gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  border:1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.pill:hover{
  transform: translateY(-1px);
  border-color: rgba(110,231,255,.28);
  box-shadow: 0 6px 18px rgba(110,231,255,.10);
}

.fineprint{ color: var(--muted); font-size:.9rem; margin: 12px 0 0; }
.muted{ color: var(--muted); }

/* ----------------------------
   SECTIONS
---------------------------- */
.section{ padding: 54px 0; }
.section.alt{
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,0));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head{ margin-bottom: 16px; }
.section-head h2{ margin:0 0 6px; font-size: 1.9rem; }
.section-head p{ margin:0; }

.panel{
  border:1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius2);
  padding: 18px;
  box-shadow: var(--shadow);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.panel:hover{
  transform: translateY(-2px);
  border-color: rgba(110,231,255,.20);
  box-shadow: 0 22px 60px rgba(0,0,0,.28);
}

.about-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.highlights{ display:grid; gap: 12px; }
.highlight{
  display:flex; gap: 12px; align-items:flex-start;
  padding: 12px;
  border-radius: var(--radius);
  border:1px solid var(--border);
  background: rgba(255,255,255,.03);
  transition: transform .15s ease, border-color .15s ease;
}
.highlight:hover{
  transform: translateY(-2px);
  border-color: rgba(110,231,255,.20);
}
.highlight i{ font-size: 1.1rem; margin-top: 2px; }
.highlight-title{ font-weight:700; }

.skills-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.badges{
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
  margin-bottom: 10px;
}
.badge{
  display:inline-flex; align-items:center; gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.03);
  color: var(--text);
  font-size: .95rem;
  transition: transform .15s ease, border-color .15s ease;
}
.badge:hover{
  transform: translateY(-1px);
  border-color: rgba(110,231,255,.20);
}

.bullets{ margin: 10px 0 0; color: var(--muted); }
.bullets li{ margin: 8px 0; }

/* ----------------------------
   PROJECT CARDS
---------------------------- */
.cards{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.card{
  border:1px solid var(--border);
  background: linear-gradient(180deg, var(--panel), rgba(255,255,255,.03));
  border-radius: var(--radius2);
  padding: 18px;
  box-shadow: var(--shadow);
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  min-height: 220px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover{
  transform: translateY(-4px);
  border-color: rgba(110,231,255,.20);
  box-shadow: 0 22px 60px rgba(0,0,0,.45);
}

.tag-row{
  display:flex;
  gap: 8px;
  flex-wrap:wrap;
  margin-bottom: 10px;
}

.tag{
  font-size: .8rem;
  color: var(--muted);
  border: 1px solid var(--border);
  background: rgba(255,255,255,.03);
  padding: 6px 10px;
  border-radius: 999px;
  transition: border-color .15s ease, color .15s ease;
}
.tag:hover{
  border-color: rgba(110,231,255,.20);
  color: var(--text);
}

.card h3{ margin: 6px 0 6px; }
.card-bottom{
  display:flex;
  gap: 10px;
  margin-top: 12px;
}

.learned{
  margin-top: 8px;
  font-size: .95rem;
  color: var(--muted);
  border-left: 3px solid rgba(110,231,255,.35);
  padding-left: 10px;
}

/* Featured project image preview */
.project-featured{
  padding: 0;
  overflow: hidden;
}
.project-featured .card-top,
.project-featured .card-bottom{
  padding: 18px;
}
.project-image{
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
}
.project-image img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.project-featured:hover .project-image img{
  transform: scale(1.06);
}

/* ----------------------------
   TIMELINE
---------------------------- */
.timeline{
  position:relative;
  padding-left: 18px;
}
.timeline::before{
  content:"";
  position:absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: rgba(255,255,255,.12);
}
.t-item{
  position:relative;
  display:grid;
  grid-template-columns: 16px 1fr;
  gap: 12px;
  margin: 16px 0;
}
.t-dot{
  width: 12px; height: 12px;
  border-radius: 999px;
  margin-top: 6px;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  box-shadow: 0 0 0 6px rgba(110,231,255,.10);
}
.t-top{
  display:flex;
  justify-content:space-between;
  gap: 12px;
  align-items:baseline;
}

/* ----------------------------
   CONTACT
---------------------------- */
.contact-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.contact-links{
  display:grid;
  gap: 10px;
  margin-top: 12px;
}
.contact-link{
  display:flex;
  align-items:center;
  gap: 10px;
  padding: 12px;
  border-radius: var(--radius);
  border:1px solid var(--border);
  background: rgba(255,255,255,.03);
  color: var(--text);
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.contact-link:hover{
  transform: translateY(-2px);
  border-color: rgba(110,231,255,.22);
  box-shadow: 0 14px 34px rgba(0,0,0,.22);
}
label{ display:grid; gap: 6px; margin: 12px 0; }
input, textarea{
  width:100%;
  padding: 12px 12px;
  border-radius: 14px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.03);
  color: var(--text);
  outline:none;
}
input:focus, textarea:focus{
  border-color: rgba(110,231,255,.35);
  box-shadow: 0 0 0 6px rgba(110,231,255,.12);
}

/* ----------------------------
   FOOTER
---------------------------- */
.footer{
  padding: 26px 0;
  border-top: 1px solid var(--border);
}
.footer-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 14px;
}
.to-top{
  display:inline-flex; align-items:center; gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  border:1px solid var(--border);
  background: var(--panel);
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.to-top:hover{
  transform: translateY(-1px);
  border-color: rgba(110,231,255,.22);
  box-shadow: 0 10px 28px rgba(0,0,0,.22);
}

/* ----------------------------
   REVEAL ANIMATIONS
---------------------------- */
.reveal{
  opacity: 0;
  transform: translateY(18px);
  filter: blur(6px);
  transition:
    opacity .7s ease,
    transform .7s cubic-bezier(.2,.9,.2,1),
    filter .7s ease;
}
.reveal.in{
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}
.reveal.delay-1{ transition-delay: .08s; }
.reveal.delay-2{ transition-delay: .16s; }
.reveal.delay-3{ transition-delay: .24s; }
.reveal.delay-4{ transition-delay: .32s; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .reveal{
    transition: none;
    opacity: 1;
    transform: none;
    filter: none;
  }
}

/* ----------------------------
   RESPONSIVE
---------------------------- */
@media (max-width: 960px){
  .hero-grid{ grid-template-columns: 1fr; }
  .cards{ grid-template-columns: 1fr; }
  .about-grid, .skills-grid, .contact-grid{ grid-template-columns: 1fr; }

  .nav-toggle{ display:inline-flex; cursor:pointer; }
  .nav-links{
    position:absolute;
    right: 4vw;
    top: 60px;
    flex-direction:column;
    align-items:stretch;
    padding: 12px;
    border-radius: 18px;
    border:1px solid var(--border);
    background: rgba(0,0,0,.35);
    backdrop-filter: blur(12px);
    display:none;
    width: min(320px, 92vw);
  }
  [data-theme="light"] .nav-links{ background: rgba(255,255,255,.70); }
  .nav-links.open{ display:flex; }
  .nav-link{ width:100%; }

  /* Slightly shorter crop on small screens */
  .profile-photo img{ height: 220px; }
}