/* =====================
   Design Tokens
   ===================== */
:root{
  --bg: #0b1220;
  --surface: rgba(255,255,255,0.06);
  --surface-2: rgba(255,255,255,0.085);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.70);
  --faint: rgba(255,255,255,0.55);
  --border: rgba(255,255,255,0.12);
  --shadow: 0 18px 50px rgba(0,0,0,0.45);

  --primary: #5eead4;
  --primary-2: #60a5fa;
  --accent: #f59e0b;

  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;

  --maxw: 1120px;
  --nav-h: 74px;
}

/* =====================
   Base / Reset
   ===================== */
*, *::before, *::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  color:var(--text);
  background:
    radial-gradient(1200px 700px at 20% -10%, rgba(94,234,212,0.18), transparent 60%),
    radial-gradient(1000px 650px at 110% 10%, rgba(96,165,250,0.16), transparent 55%),
    radial-gradient(900px 600px at 35% 120%, rgba(245,158,11,0.10), transparent 55%),
    var(--bg);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height:1.6;
  overflow-x:hidden;
}

a{ color:inherit; text-decoration:none; }

:focus-visible{
  outline: 3px solid rgba(94,234,212,0.65);
  outline-offset: 3px;
  border-radius: 10px;
}

.container{
  width:min(var(--maxw), calc(100% - 2rem));
  margin-inline:auto;
}

/* Decorative grid */
.bg-grid{
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(900px 550px at 40% 10%, rgba(0,0,0,0.55), transparent 70%);
  opacity: 0.25;
  pointer-events:none;
  z-index: -1;
}

/* =====================
   Top Navigation
   ===================== */
.nav{
  position:fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  display:flex;
  align-items:center;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: linear-gradient(to bottom, rgba(11,18,32,0.86), rgba(11,18,32,0.55));
  border-bottom: 1px solid var(--border);
}

.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 1rem;
  padding: 0.75rem 0;
}

.brand{
  display:flex;
  align-items:center;
  gap: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.2px;
  user-select:none;
}

.brand-badge{
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(94,234,212,0.75), rgba(96,165,250,0.35) 55%, rgba(245,158,11,0.22) 100%);
  box-shadow: 0 10px 24px rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.18);
  position:relative;
  overflow:hidden;
}

.brand-badge::after{
  content:"";
  position:absolute;
  inset:-60% -60% auto auto;
  width: 90px;
  height: 90px;
  background: rgba(255,255,255,0.15);
  transform: rotate(35deg);
  filter: blur(1px);
}

.brand-name{ font-size: 1.02rem; }

.nav-links{
  display:flex;
  align-items:center;
  gap: 0.25rem;
}

.nav-link,
.dropdown-trigger{
  display:inline-flex;
  align-items:center;
  gap: 0.45rem;
  padding: 0.55rem 0.8rem;
  border-radius: 12px;
  color: var(--muted);
  transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

.nav-link:hover,
.dropdown-trigger:hover{
  background: rgba(255,255,255,0.06);
  color: var(--text);
  transform: translateY(-1px);
}

.nav-link.active{
  color: var(--text);
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.10);
}

/* Dropdown */
.dropdown{ position:relative; }
.dropdown-trigger{
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  font: inherit;
}

.chev{
  width: 14px;
  height: 14px;
  opacity: 0.9;
  transition: transform 160ms ease;
}

.dropdown-menu{
  position:absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 300px;
  padding: 0.55rem;
  border-radius: 16px;
  background: rgba(15,23,42,0.92);
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transform: translateY(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
}

.dropdown-item{
  display:flex;
  gap: 0.75rem;
  padding: 0.75rem 0.8rem;
  border-radius: 14px;
  color: var(--muted);
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}

.dropdown-item:hover{
  background: rgba(255,255,255,0.07);
  color: var(--text);
  transform: translateY(-1px);
}

.dropdown-item strong{
  display:block;
  color: var(--text);
  font-weight: 600;
  line-height: 1.25;
}

.dropdown-item span{
  display:block;
  color: var(--faint);
  font-size: 0.92rem;
  line-height: 1.3;
  margin-top: 0.15rem;
}

.dropdown-icon{
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  border-radius: 14px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  display:grid;
  place-items:center;
}

@media (hover:hover) and (pointer:fine){
  .dropdown:hover .dropdown-menu{ opacity:1; transform: translateY(0); pointer-events:auto; }
  .dropdown:hover .chev{ transform: rotate(180deg); }
}
.dropdown.open .dropdown-menu{ opacity:1; transform: translateY(0); pointer-events:auto; }
.dropdown.open .chev{ transform: rotate(180deg); }

/* Mobile menu button */
.menu-btn{
  display:none;
  align-items:center;
  justify-content:center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.05);
  color: var(--text);
  cursor:pointer;
  transition: transform 160ms ease, background 160ms ease;
}
.menu-btn:hover{ transform: translateY(-1px); background: rgba(255,255,255,0.075); }

.mobile-panel{
  display:none;
  position:absolute;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: rgba(15,23,42,0.94);
  border-bottom: 1px solid rgba(255,255,255,0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.mobile-panel .mobile-inner{
  padding: 0.9rem 0;
  display:grid;
  gap: 0.35rem;
}

.mobile-panel a,
.mobile-panel button{ width: 100%; justify-content: space-between; }

/* =====================
   Layout / Sections
   ===================== */
main{ padding-top: calc(var(--nav-h) + 24px); }
section{ padding: 2.6rem 0; }
[id]{ scroll-margin-top: calc(var(--nav-h) + 18px); }

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

h2{
  font-family: Fraunces, ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  margin: 0;
  font-size: clamp(1.55rem, 2.2vw, 2.05rem);
  letter-spacing: -0.3px;
}

.section-sub{
  color: var(--muted);
  margin: 0.1rem 0 0;
  max-width: 70ch;
}

/* =====================
   Hero
   ===================== */
.hero{ padding: 4.2rem 0 2.8rem; }
.hero-grid{
  display:grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.2rem;
  align-items:center;
}

.kicker{
  display:inline-flex;
  gap: 0.55rem;
  align-items:center;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.05);
  color: var(--muted);
  font-size: 0.92rem;
  width: fit-content;
  animation: floatIn 700ms ease both;
}
.kicker-dot{
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--primary);
  box-shadow: 0 0 0 6px rgba(94,234,212,0.10);
}

h1{
  font-family: Fraunces, ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.05;
  margin: 0.8rem 0 1rem;
  font-size: clamp(2.25rem, 4vw, 3.45rem);
  animation: floatIn 820ms ease both;
  animation-delay: 120ms;
}

.gradient-name{
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead{
  color: var(--muted);
  font-size: clamp(1.03rem, 1.25vw, 1.15rem);
  max-width: 70ch;
  margin: 0 0 1.6rem;
  animation: floatIn 900ms ease both;
  animation-delay: 220ms;
}

.hero-actions{
  display:flex;
  gap: 0.75rem;
  flex-wrap:wrap;
  align-items:center;
  animation: floatIn 950ms ease both;
  animation-delay: 320ms;
}

.btn{
  display:inline-flex;
  align-items:center;
  gap: 0.6rem;
  padding: 0.85rem 1.05rem;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  font-weight: 600;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
  box-shadow: 0 14px 28px rgba(0,0,0,0.25);
}
.btn:hover{ transform: translateY(-2px); background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.22); }
.btn.primary{ background: linear-gradient(135deg, rgba(94,234,212,0.22), rgba(96,165,250,0.18)); border-color: rgba(94,234,212,0.35); }
.btn.primary:hover{ border-color: rgba(94,234,212,0.55); }

.btn .arrow{ width: 16px; height: 16px; opacity: 0.95; transition: transform 160ms ease; }
.btn:hover .arrow{ transform: translateX(2px); }

.hero-card{
  background: linear-gradient(180deg, rgba(255,255,255,0.065), rgba(255,255,255,0.03));
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  position:relative;
  overflow:hidden;
  animation: floatIn 980ms ease both;
  animation-delay: 220ms;
}

.hero-card::before{
  content:"";
  position:absolute;
  inset:-40% -30% auto auto;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle at 30% 30%, rgba(94,234,212,0.26), transparent 58%);
  filter: blur(2px);
}

.hero-card::after{
  content:"";
  position:absolute;
  inset:auto auto -50% -40%;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle at 50% 50%, rgba(96,165,250,0.22), transparent 60%);
}

.card-inner{ position:relative; z-index:1; }

.stat-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 0.85rem; margin-top: 0.5rem; }
.stat{
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  padding: 0.95rem;
  transition: transform 160ms ease, background 160ms ease;
}
.stat:hover{ transform: translateY(-2px); background: rgba(255,255,255,0.06); }
.stat .label{ color: var(--faint); font-size: 0.92rem; margin: 0; }
.stat .value{ font-weight: 700; margin: 0.25rem 0 0; letter-spacing: -0.2px; }

.pill-row{ display:flex; flex-wrap:wrap; gap: 0.5rem; margin-top: 1rem; }
.pill{
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  color: var(--muted);
  font-size: 0.9rem;
}

/* =====================
   Content panels
   ===================== */
.split{ display:grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.panel{
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.12);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  padding: 1.05rem;
  box-shadow: 0 18px 46px rgba(0,0,0,0.28);
}
.panel-title{ margin: 0 0 0.55rem; font-size: 1.05rem; letter-spacing: -0.2px; }

.bullets{ margin: 0.4rem 0 0; padding-left: 1.15rem; color: var(--muted); }
.bullets li{ margin: 0.45rem 0; }

/* Experience */
.timeline{ display:grid; gap: 1rem; }
.timeline-card{
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.12);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  padding: 1.15rem;
  box-shadow: 0 18px 46px rgba(0,0,0,0.32);
}
.timeline-top{ display:flex; align-items:flex-start; justify-content:space-between; gap: 1rem; flex-wrap:wrap; }
.timeline-role{ margin:0; font-size: 1.12rem; letter-spacing: -0.2px; }
.timeline-org{ margin: 0.2rem 0 0; color: var(--muted); }
.timeline-meta{ display:flex; gap: 0.5rem; flex-wrap:wrap; justify-content:flex-end; }

.chip{
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  color: var(--muted);
  font-size: 0.9rem;
}

.callout{
  margin-top: 0.9rem;
  padding: 0.85rem 0.95rem;
  border-radius: 16px;
  border: 1px solid rgba(94,234,212,0.22);
  background: linear-gradient(135deg, rgba(94,234,212,0.10), rgba(96,165,250,0.08));
  color: var(--text);
}

/* Projects */
.project-grid{ display:grid; grid-template-columns: repeat(1, 1fr); gap: 1rem; }
.project{
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.12);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  padding: 1.05rem;
  box-shadow: 0 18px 46px rgba(0,0,0,0.30);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}
.project:hover{ transform: translateY(-3px); border-color: rgba(94,234,212,0.35); background: linear-gradient(180deg, rgba(255,255,255,0.075), rgba(255,255,255,0.035)); }

.project-top{ display:flex; align-items:center; flex-wrap:wrap; gap: 0.45rem 0.55rem; }
.project-top h3{ margin:0; flex-basis: 100%; font-size: 1.1rem; letter-spacing: -0.2px; }
.tag{
  padding: 0.28rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  color: var(--muted);
  font-size: 0.88rem;
}
.project-desc{ margin: 0.65rem 0 0.9rem; color: var(--muted); }
.project-actions{ display:flex; gap: 0.5rem; flex-wrap:wrap; }

/* Skills */
.skills-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* Education */
.education-card{
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.12);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  padding: 1.15rem;
  box-shadow: 0 18px 46px rgba(0,0,0,0.30);
}
.education-top{ display:flex; align-items:flex-start; justify-content:space-between; gap: 1rem; flex-wrap:wrap; }
.education-top h3{ margin:0; font-size: 1.15rem; letter-spacing: -0.2px; }
.muted{ color: var(--muted); margin: 0.25rem 0 0; }

/* Connect cards */
.cards{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card{
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.12);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  padding: 1.05rem;
  box-shadow: 0 18px 46px rgba(0,0,0,0.32);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}
.card:hover{
  transform: translateY(-3px);
  border-color: rgba(94,234,212,0.35);
  background: linear-gradient(180deg, rgba(255,255,255,0.075), rgba(255,255,255,0.035));
}

.card-top{ display:flex; align-items:center; gap: 0.85rem; margin-bottom: 0.75rem; }
.icon{
  width: 44px;
  height: 44px;
  border-radius: 16px;
  display:grid;
  place-items:center;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.05);
}

.card h3{ margin:0; font-size: 1.05rem; letter-spacing: -0.2px; }
.handle{ margin: 0.15rem 0 0; color: var(--muted); font-size: 0.98rem; }

.cta-row{ display:flex; align-items:center; justify-content:space-between; margin-top: 0.95rem; color: var(--faint); font-size: 0.95rem; }

.linkchip{
  display:inline-flex;
  align-items:center;
  gap: 0.45rem;
  padding: 0.38rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  color: var(--muted);
  transition: background 160ms ease, transform 160ms ease;
}
.linkchip:hover{ background: rgba(255,255,255,0.07); transform: translateY(-1px); color: var(--text); }

/* Footer */
footer{ padding: 1.5rem 0 2.3rem; color: var(--faint); border-top: 1px solid rgba(255,255,255,0.10); margin-top: 1.2rem; }
.foot{ display:flex; align-items:center; justify-content:space-between; gap: 1rem; flex-wrap:wrap; }
.tiny{ font-size: 0.95rem; margin:0; }

/* =====================
   Motion
   ===================== */
@keyframes floatIn{ from{ opacity:0; transform: translateY(10px); } to{ opacity:1; transform: translateY(0); } }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation:none !important; transition:none !important; }
}

/* =====================
   Responsive
   ===================== */
@media (max-width: 980px){
  .hero-grid{ grid-template-columns: 1fr; }
  .project-grid{ grid-template-columns: 1fr; }
  .split{ grid-template-columns: 1fr; }
  .skills-grid{ grid-template-columns: 1fr; }
  .cards{ grid-template-columns: 1fr; }
  .section-head{ flex-direction: column; align-items:flex-start; }
}

@media (max-width: 760px){
  .nav-links{ display:none; }
  .menu-btn{ display:inline-flex; }
  .mobile-panel{ display:block; max-height: 0; overflow:hidden; transition: max-height 220ms ease; }
  .mobile-panel.open{ max-height: 640px; }

  /* Mobile dropdown: keep menu visible when opened */
  .mobile-panel .dropdown-menu{ position:static; opacity:1; transform:none; pointer-events:auto; box-shadow:none; background: transparent; border: 0; padding: 0.35rem 0 0.2rem; }
  .mobile-panel .dropdown-item{ background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.10); }
  .mobile-panel .dropdown-item:hover{ background: rgba(255,255,255,0.06); }
  .mobile-panel .dropdown-trigger{ background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.10); }
}