/* ===== Design Tokens ===== */
:root{
  --bg:#0b0c10;               /* page background */
  --surface:#11151d;           /* cards/panels */
  --elev:#0f1117;              /* inputs */
  --text:#f7f7fb;              /* primary text */
  --muted:#c8cbd8;             /* secondary */
  --primary:#ffb300;           /* brand 1 */
  --accent:#ff7a18;            /* brand 2 */
  --border:rgba(255,255,255,.10);
  --shadow:rgba(0,0,0,.35);
  --radius:14px;
  --focus: 0 0 0 3px rgba(255,179,0,.45);
}

:root[data-theme="light"]{
  --bg:#f7f8fb;
  --surface:#ffffff;
  --elev:#ffffff;
  --text:#111319;
  --muted:#5a6270;
  --border:rgba(0,0,0,.10);
  --shadow:rgba(0,0,0,.12);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; color:var(--text); background:
    radial-gradient(1200px 600px at 100% -10%, #171a25 0%, transparent 60%),
    radial-gradient(1000px 600px at 0% 10%, #1a1f2c 0%, transparent 60%),
    var(--bg);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
}

/* ===== Layout ===== */
.container{max-width:1200px; margin:0 auto; padding:1.25rem 1rem 2rem}
.grid-cards{display:grid; gap:1rem; grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}

.hero{
  display:grid; gap:1.25rem; padding:1.25rem; margin-bottom:1.5rem;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  background:linear-gradient(135deg, rgba(255,179,0,.12), rgba(255,122,24,.12)), var(--surface);
  border:1px solid var(--border); border-radius:var(--radius);
  box-shadow:0 14px 32px var(--shadow);
}
.hero-text{display:flex; flex-direction:column; gap:.75rem}
.hero-text h2{margin:.1rem 0}
.hero-lede{margin:0; color:var(--muted); max-width:48ch}
.hero-actions{display:flex; flex-wrap:wrap; gap:.6rem; align-items:center}
.hero-highlights{list-style:none; padding:0; margin:.25rem 0 0; display:flex; flex-wrap:wrap; gap:.6rem}
.hero-highlights li{
  padding:.45rem .75rem; border-radius:999px; background:color-mix(in oklab, var(--surface) 70%, transparent);
  border:1px solid var(--border); color:var(--muted); font-weight:700;
}

.hero-panel{
  background:color-mix(in oklab, var(--surface) 85%, transparent);
  border:1px solid var(--border); border-radius:var(--radius); padding:1rem 1.1rem;
  box-shadow:0 12px 26px var(--shadow);
}
.hero-panel h3{margin:.1rem 0 .4rem}
.hero-panel ul{margin:0 0 .9rem 1.1rem; color:var(--muted); padding-left:1rem}
.hero-chip-row{display:flex; gap:.5rem; flex-wrap:wrap}
.chip{padding:.35rem .65rem; border-radius:999px; border:1px solid var(--border); background:var(--elev); font-weight:700}

.section-header{display:flex; align-items:flex-end; justify-content:space-between; gap:1rem; margin:0 0 1rem}
.eyebrow{letter-spacing:.1em; text-transform:uppercase; font-weight:800; color:var(--muted); margin:0 0 .2rem 0}
.section-title{margin:0 0 .2rem 0}
.section-lede{margin:0; color:var(--muted)}

/* ===== Cards / Panels ===== */
.card{
  display:block; /* stacked layout for checklist pages; grid overrides below */
  background:linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.02));
  border:1px solid var(--border); border-radius:var(--radius); padding:1rem;
  box-shadow:0 10px 24px var(--shadow);
}

/* Hub grid cards keep horizontal look */
.grid-cards .card{
  display:flex; gap:.9rem; text-decoration:none; color:inherit; align-items:flex-start;
  transition:transform .15s ease, box-shadow .15s ease;
}
.grid-cards .card:hover{transform:translateY(-2px); box-shadow:0 16px 32px var(--shadow)}
.card-icon{font-size:1.4rem; line-height:1}
.card-title{margin:0 0 .2rem 0}
.card-desc{margin:0; color:var(--muted)}

/* ===== Header / Footer ===== */
.site-header{
  display:flex; justify-content:space-between; align-items:center; gap:.75rem; padding:1rem;
  position:sticky; top:0; z-index:10;
  backdrop-filter:saturate(1.2) blur(6px);
  background:color-mix(in oklab, var(--surface) 85%, transparent);
  border-bottom:1px solid var(--border);
}
.brand{display:flex; align-items:center; gap:.75rem}
.brand-logo{width:44px; height:44px; border-radius:12px; object-fit:contain; background:transparent}
.site-title{margin:0}
.site-subtitle{margin:.2rem 0 0; color:var(--muted)}
.header-actions{display:flex; gap:.5rem; align-items:center}
.theme-toggle{appearance:none; border:none; background:linear-gradient(180deg, var(--primary), var(--accent));
  color:#111; font-weight:800; padding:.5rem .7rem; border-radius:10px; cursor:pointer}
.theme-toggle:focus-visible{outline:none; box-shadow: var(--focus)}

.btn{padding:.55rem .9rem; border:1px solid var(--border); background:var(--surface); color:var(--text); border-radius:10px; font-weight:700}
.btn.small{padding:.4rem .7rem}
.btn.primary{background:linear-gradient(180deg, var(--accent), var(--primary)); color:#111; border:none}
.btn.ghost{background:transparent; border:1px dashed var(--border); color:var(--text)}
.btn:where(:hover,:focus-visible){transform:translateY(-1px)}
.btn:focus-visible{outline:none; box-shadow: var(--focus)}

/* ===== Checklist ===== */
.checklist{list-style:none; padding:0; margin:1rem 0; display:grid; gap:.6rem}
.checklist li{
  background:var(--surface); border:1px solid var(--border); border-radius:12px;
  padding:.8rem .95rem; box-shadow:0 8px 18px var(--shadow);
}
.checklist label{display:flex; gap:.75rem; align-items:flex-start; cursor:pointer}
.checklist input[type="checkbox"]{margin-top:.1rem; width:1.1rem; height:1.1rem; accent-color:var(--primary)}

/* Toolbar stacked above steps */
.chk-toolbar{display:flex; flex-direction:column; align-items:stretch; gap:.75rem; margin:1rem 0 .5rem}
.chk-progress{width:100%; height:10px; accent-color:var(--primary)}
.chk-actions{display:flex; flex-wrap:wrap; gap:.5rem; align-items:center}

/* Utilities */
.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}

/* Motion prefs */
@media (prefers-reduced-motion: reduce){ *{transition:none !important; animation:none !important} }

/* Print */
@media print{
  .site-header, .chk-toolbar { display:none !important; }
  body{background:white; color:black}
  a{color:black}
}