/* ===============================
   Packlyt Design System
   Locked baseline stylesheet
   =============================== */

/* -------- CSS Variables -------- */
:root{
  --bg:#0b1020;
  --card:#11162a;
  --text:#e5e7eb;
  --muted:#9ca3af;
  --accent:#4f46e5;
  --border:rgba(255,255,255,.08);
}

/* -------- Reset / Base -------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.5;
}
a{color:inherit}
img{max-width:100%;display:block}

/* -------- Layout -------- */
.container{
  max-width:1100px;
  margin:0 auto;
  padding:24px;
}
.section{margin-top:16px}

/* -------- Header -------- */
.site-header{
  position:sticky;
  top:0;
  background:rgba(11,16,32,.9);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  z-index:10;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  font-weight:700;
}
.nav{
  display:flex;
  align-items:center;
  gap:14px;
}
.nav a{
  text-decoration:none;
  color:var(--text);
  opacity:.9;
}
.nav a:hover{opacity:1}

/* -------- Dropdown -------- */
.dropdown{position:relative}
.dropbtn{
  background:transparent;
  border:1px solid var(--border);
  color:var(--text);
  padding:8px 10px;
  border-radius:10px;
  cursor:pointer;
}
.dropdown-menu{
  display:none;
  position:absolute;
  right:0;
  top:44px;
  min-width:260px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:14px;
  padding:8px;
}
.dropdown-menu.open{display:block}
.dropdown-menu a{
  display:block;
  padding:10px;
  border-radius:10px;
  text-decoration:none;
}
.dropdown-menu a:hover{
  background:rgba(255,255,255,.06);
}

/* -------- Footer -------- */
.site-footer{
  border-top:1px solid var(--border);
  margin-top:28px;
}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-links{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.small{
  font-size:.9rem;
  color:var(--muted);
}

/* -------- Typography -------- */
h1,h2,h3,h4{line-height:1.25}
.page-header{padding:10px 0 6px}
.subtitle{
  color:var(--muted);
  max-width:70ch;
}
.note{
  color:var(--muted);
  font-size:.92rem;
}
.muted{color:var(--muted)}

/* -------- Cards -------- */
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:16px;
  padding:18px;
}

/* -------- Grids -------- */
.grid-2{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}
@media (max-width:900px){
  .grid-2{grid-template-columns:1fr}
}

/* -------- Forms -------- */
.field{margin:12px 0}
label{
  display:block;
  margin-bottom:6px;
  color:var(--text);
  opacity:.95;
}
input,select{
  width:100%;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.03);
  color:var(--text);
}
input:focus,select:focus{
  outline:none;
  border-color:var(--accent);
}

/* -------- Buttons -------- */
.actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:12px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  cursor:pointer;
  text-decoration:none;
}
.btn-primary{
  background:var(--accent);
  border-color:transparent;
  color:white;
}
.btn-ghost{
  background:transparent;
  color:var(--text);
}

/* -------- Results / KPIs -------- */
.results .kpi,
.kpi{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  padding:12px 0;
  border-bottom:1px solid var(--border);
}
.results .kpi:last-child,
.kpi:last-child{
  border-bottom:none;
}
.results strong,
.kpi strong{
  font-size:1.2rem;
}

/* -------- Lists -------- */
ul{padding-left:18px}
li{margin:6px 0}

/* -------- Utility -------- */
.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;
  background:var(--card);
  padding:10px;
  border-radius:10px;
  border:1px solid var(--border);
}

/* -------- Accessibility -------- */
:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}