/* Minimal, professional portfolio (static)
   - No frameworks
   - System font stack
   - Responsive layout
*/

:root{
  --bg: #0b0f19;
  --panel: #0f172a;
  --panel-2: #111c33;
  --text: #e6eaf2;
  --muted: #a9b3c7;
  --border: rgba(255,255,255,.10);
  --shadow: 0 18px 50px rgba(0,0,0,.45);
  --accent: #5eead4; /* teal-ish */
  --accent-2: #60a5fa; /* blue */
  --ring: rgba(94,234,212,.35);

  --radius: 18px;
  --radius-sm: 12px;

  --container: 1100px;
}

*{ box-sizing: border-box; }
html,body{ height: 100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 10% 0%, rgba(96,165,250,.18), transparent 55%),
    radial-gradient(1000px 600px at 90% 10%, rgba(94,234,212,.16), transparent 50%),
    radial-gradient(900px 600px at 40% 120%, rgba(124,58,237,.14), transparent 55%),
    var(--bg);
  line-height: 1.55;
}

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

.container{
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

.skip-link{
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  left: 16px; top: 16px; width:auto; height:auto; padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  z-index: 1000;
}

header.site-header{
  position: sticky;
  top:0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(11,15,25,.55);
  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: 700;
  letter-spacing: .2px;
}
.brand-mark{
  width: 36px; height: 36px;
  border-radius: 12px;
  background:
    radial-gradient(10px 10px at 30% 30%, rgba(255,255,255,.75), transparent 60%),
    linear-gradient(135deg, rgba(94,234,212,.95), rgba(96,165,250,.95));
  box-shadow: 0 14px 30px rgba(0,0,0,.35);
  border: 1px solid rgba(255,255,255,.18);
}

.nav-links{
  display:flex; align-items:center; gap: 6px;
}
.nav-links a{
  padding: 9px 12px;
  border-radius: 12px;
  color: var(--muted);
  border: 1px solid transparent;
}
.nav-links a:hover{
  color: var(--text);
  border-color: rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
}

.nav-actions{
  display:flex; align-items:center; gap: 10px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: var(--text);
  cursor: pointer;
  user-select:none;
}
.btn:hover{
  background: rgba(255,255,255,.07);
  border-color: rgba(255,255,255,.18);
}
.btn:focus-visible{
  outline: 0;
  box-shadow: 0 0 0 5px var(--ring);
}

.btn-primary{
  background: linear-gradient(135deg, rgba(94,234,212,.95), rgba(96,165,250,.95));
  color: #07101b;
  border-color: rgba(255,255,255,.22);
}
.btn-primary:hover{
  filter: brightness(1.02);
}

.btn-ghost{
  background: transparent;
}

.hero{
  padding: 64px 0 28px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 22px;
  align-items: start;
}
@media (max-width: 900px){
  .hero-grid{ grid-template-columns: 1fr; }
}

.card{
  background: rgba(15,23,42,.70);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.hero-main{
  padding: 28px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.03);
  color: var(--muted);
  font-size: 13px;
}
.dot{
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(94,234,212,.15);
}

h1{
  margin: 14px 0 10px;
  font-size: 46px;
  line-height: 1.08;
  letter-spacing: -0.7px;
}
@media (max-width: 520px){
  h1{ font-size: 38px; }
}
.lead{
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 18px;
}

.hero-ctas{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.hero-aside{
  padding: 22px;
}
.stat{
  padding: 14px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.03);
  margin-bottom: 10px;
}
.stat strong{
  display:block;
  font-size: 14px;
  letter-spacing: .2px;
}
.stat span{
  color: var(--muted);
  font-size: 13px;
}
.pills{
  display:flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.pill{
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.03);
  color: var(--muted);
  font-size: 13px;
}

.section{
  padding: 28px 0 10px;
}
.section-title{
  display:flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin: 0 0 14px;
}
.section-title h2{
  margin:0;
  font-size: 22px;
  letter-spacing: -0.3px;
}
.section-title p{
  margin:0;
  color: var(--muted);
  font-size: 14px;
}

.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
@media (max-width: 980px){
  .grid-3{ grid-template-columns: 1fr; }
}

.project-card{
  padding: 18px;
  transition: transform .16s ease, border-color .16s ease, background .16s ease;
}
.project-card:hover{
  transform: translateY(-2px);
  border-color: rgba(255,255,255,.18);
  background: rgba(17,28,51,.75);
}
.project-meta{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}
.badge{
  font-size: 12px;
  color: #07101b;
  padding: 4px 8px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(94,234,212,.95), rgba(96,165,250,.95));
}
.muted{
  color: var(--muted);
}
.project-card h3{
  margin: 6px 0 8px;
  font-size: 18px;
  letter-spacing: -0.2px;
}
.project-card p{
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 14px;
}
.tags{
  display:flex; flex-wrap: wrap; gap: 6px;
  margin: 0 0 14px;
}
.tag{
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.03);
  color: var(--muted);
}
.card-actions{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
}

.split{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 980px){
  .split{ grid-template-columns: 1fr; }
}
.panel{
  padding: 18px;
}
.panel h3{ margin: 0 0 8px; font-size: 16px; }
.panel ul{ margin: 0; padding-left: 18px; color: var(--muted); }
.panel li{ margin: 6px 0; }

.footer{
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 14px;
}
.footer-grid{
  display:flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,.10);
}
.footer a{ color: var(--text); }
.footer small{ color: var(--muted); }

.page{
  padding: 32px 0 42px;
}
.page h1{
  font-size: 34px;
}
.page h2{
  font-size: 20px;
  margin-top: 22px;
}

.form{
  display:grid;
  gap: 12px;
  margin-top: 14px;
}
.field{
  display:grid;
  gap: 6px;
}
label{
  font-size: 13px;
  color: var(--muted);
}
input, textarea, select{
  width: 100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.03);
  color: var(--text);
  outline: none;
}
textarea{ min-height: 120px; resize: vertical; }
input:focus, textarea:focus, select:focus{
  border-color: rgba(94,234,212,.55);
  box-shadow: 0 0 0 5px rgba(94,234,212,.18);
}

.notice{
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.03);
  color: var(--muted);
  font-size: 14px;
}

.filters{
  display:flex; gap: 8px; flex-wrap: wrap;
  margin: 14px 0 10px;
}
.chip{
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.03);
  color: var(--muted);
  font-size: 13px;
  cursor:pointer;
}
.chip[data-active="true"]{
  color: #07101b;
  border-color: rgba(255,255,255,.22);
  background: linear-gradient(135deg, rgba(94,234,212,.95), rgba(96,165,250,.95));
}

.hr{
  height: 1px;
  background: rgba(255,255,255,.10);
  margin: 18px 0;
}

.case-hero{
  padding: 18px;
}
.case-hero h1{ margin: 8px 0 10px; font-size: 34px; }
.case-hero .lead{ font-size: 16px; margin-bottom: 0; }
.kv{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 14px;
}
@media (max-width: 980px){
  .kv{ grid-template-columns: 1fr; }
}
.kv .stat{ margin:0; }

.diagram{
  margin-top: 12px;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.02);
  padding: 14px;
  overflow:auto;
}
.diagram pre{
  margin:0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}