:root{
  --ink:#0b0b0c;
  --paper:#fbfaf7;
  --warm:#f2efe7;
  --warm2:#ebe6da;
  --line: rgba(11,11,12,.08);
  --shadow: 0 18px 48px rgba(11,11,12,.10);
  --shadow2: 0 10px 26px rgba(11,11,12,.10);
  --radius: 28px;
}

html, body { height: 100%; }
body { font-family: 'Inter', sans-serif; background: var(--paper); color: var(--ink); }

/* page routing */
.page.hidden { display: none; }

/* warm glass cards */
.panel { border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.70); box-shadow: var(--shadow2); backdrop-filter: blur(10px); }
.panel-strong { border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.92); box-shadow: var(--shadow); }
.chip { border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.75); }
.softline { border-color: var(--line); }

/* hero background */
.bg-warm {
  background:
    radial-gradient(1200px 520px at 20% 15%, rgba(243,236,223,.95), rgba(251,250,247,0) 60%),
    radial-gradient(900px 520px at 85% 20%, rgba(236,232,219,.9), rgba(251,250,247,0) 55%),
    radial-gradient(900px 520px at 55% 90%, rgba(241,238,230,.9), rgba(251,250,247,0) 60%),
    var(--paper);
}

/* subtle motion */
.fade { transition: opacity .18s ease, transform .18s ease; }
.hoverlift { transition: transform .18s ease, box-shadow .18s ease; }
.hoverlift:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

/* nav active state */
.navlink.active { font-weight: 700; }

/* mobile menu */
.drawer.hidden { display:none; }

/* details */
details[open] summary { font-weight: 700; }
summary { cursor: pointer; }
summary::-webkit-details-marker { display:none; }

/* input focus */
.chip:focus-within {
    outline: 2px solid var(--ink);
    outline-offset: 2px;
}