/* renovationcost.sg — shared design system.
   One accent colour, one type scale, no gradients, no emoji. */

:root{
  --paper:#F7F7F4;
  --card:#FFFFFF;
  --ink:#1B2A3A;
  --ink-soft:#4A5A6A;
  --ink-faint:#8B99A6;
  --line:#E3E4DE;
  --line-soft:#F0F0EB;
  --scan:#FFD84D;
  --scan-soft:#FFF3C2;
  --flag:#D64545;
  --flag-soft:#FDECEC;
  --ok:#2E8B57;
  --ok-soft:#E8F5EE;
  --warn:#E08A2E;
  --warn-soft:#FDF2E2;
  --radius:14px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Public Sans',system-ui,-apple-system,sans-serif;
  background:var(--paper);color:var(--ink);line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:'Bricolage Grotesque',sans-serif;line-height:1.14;letter-spacing:-.01em}
.mono{font-family:'IBM Plex Mono',monospace}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.wrap.narrow{max-width:720px}

/* ---------- nav ---------- */
nav{position:sticky;top:0;z-index:60;background:rgba(247,247,244,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:60px;gap:14px}
.logo{font-family:'Bricolage Grotesque';font-weight:800;font-size:1.05rem;
  text-decoration:none;color:var(--ink);display:flex;align-items:center;gap:9px}
.logo .dot{width:20px;height:20px;border-radius:6px;background:var(--scan);
  position:relative;overflow:hidden;display:inline-block;flex-shrink:0}
.logo .dot::after{content:"";position:absolute;left:0;right:0;height:3px;
  background:var(--ink);top:4px;box-shadow:0 4px 0 var(--ink),0 8px 0 var(--ink)}
.nav-links{display:flex;gap:22px;align-items:center}
.nav-links a{color:var(--ink-soft);text-decoration:none;font-size:.9rem;font-weight:500}
.nav-links a:hover{color:var(--ink)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--ink);color:#fff;padding:12px 22px;border-radius:10px;
  text-decoration:none;font-weight:600;font-size:.93rem;border:none;cursor:pointer;
  font-family:inherit;transition:transform .15s,box-shadow .15s,opacity .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(27,42,58,.22)}
.btn:active{transform:none}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,
button:focus-visible{outline:3px solid var(--scan);outline-offset:2px}
.btn.yellow{background:var(--scan);color:var(--ink)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.small{padding:8px 15px;font-size:.85rem}
.btn.wide{width:100%}

/* ---------- form controls ---------- */
input[type=text],input[type=email],input[type=number],select{
  padding:12px 14px;border:1px solid var(--line);border-radius:10px;
  font-family:inherit;font-size:.95rem;background:#fff;color:var(--ink);width:100%}
label{font-size:.85rem;color:var(--ink-soft);font-weight:500;
  display:block;margin-bottom:6px}

/* ---------- surfaces ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.pill{font-family:'IBM Plex Mono';font-size:.66rem;font-weight:600;
  padding:3px 9px;border-radius:99px;white-space:nowrap;display:inline-block}
.pill.ok{background:var(--ok-soft);color:var(--ok);border:1px solid #BFE3CE}
.pill.warn{background:var(--warn-soft);color:var(--warn);border:1px solid #F0D2A6}
.pill.flag{background:var(--flag-soft);color:var(--flag);border:1px solid #EFC4C4}
.pill.beta{background:var(--scan-soft);color:var(--ink);border:1px solid var(--scan)}

.eyebrow{font-family:'IBM Plex Mono';font-size:.74rem;letter-spacing:.13em;
  text-transform:uppercase;color:var(--ink-soft);margin-bottom:12px}
.note{font-size:.84rem;color:var(--ink-soft)}
.err{color:var(--flag);font-size:.88rem}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:40px 0 56px;background:#EFEFEA;margin-top:60px}
.foot-grid{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.foot-grid p,.foot-grid a{font-size:.85rem;color:var(--ink-soft)}
.foot-grid a{color:var(--ink);text-decoration:none}
.foot-grid a:hover{text-decoration:underline}
.foot-col h4{font-size:.8rem;font-family:'IBM Plex Mono';letter-spacing:.08em;
  text-transform:uppercase;color:var(--ink);margin-bottom:10px;font-weight:600}
.foot-col ul{list-style:none}
.foot-col li{margin-bottom:6px}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}