:root{
  --bg:#f7f7fb;
  --card:#ffffff;
  --accent:#d86b6b;
  --accent-dark:#b34f5b;
  --muted:#666;
  --border:#e6e6ee;
}

*{box-sizing:border-box}
html,body{height:100%;margin:0;font-family:Inter,system-ui,Segoe UI,Arial,sans-serif;background:var(--bg);color:#111;line-height:1.5}
body{min-height:100%}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-dark)}

/* Header */
.titlebar{position:sticky;top:0;background:linear-gradient(90deg,#e86b6b,#c967a8);padding:0.6rem 0;box-shadow:0 2px 8px rgba(0,0,0,0.08);z-index:20}
.titlebar-inner{max-width:960px;margin:0 auto;padding:0 1rem;display:flex;align-items:center;justify-content:space-between;gap:0.75rem;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:0.75rem;color:#fff;text-decoration:none}
.titlebar .logo{width:44px;height:44px;color:#fff;flex-shrink:0;filter:drop-shadow(0 2px 4px rgba(0,0,0,0.2));transition:transform .22s ease,filter .22s ease}
.brand:hover .logo{transform:translateY(-1px) scale(1.03);filter:drop-shadow(0 4px 8px rgba(0,0,0,0.28))}
.title-text .title{font-weight:700;color:#fff;font-size:1rem}
.title-text .subtitle{font-size:0.85rem;color:rgba(255,255,255,0.92);margin-top:0.1rem}
.top-nav{display:flex;gap:.35rem;flex-wrap:wrap}
.top-nav a{color:#fff;padding:0.35rem 0.6rem;border-radius:999px;font-size:0.95rem}
.top-nav a.active,.top-nav a:hover{background:rgba(255,255,255,0.2)}

.container{max-width:960px;margin:0 auto;padding:1rem}
h1,h2,h3{line-height:1.2}
h1{font-size:1.6rem;margin:.2rem 0 0.4rem}
h2{font-size:1.25rem;margin:0 0 0.75rem}
.lead{margin:0 0 1rem;color:var(--muted);font-size:1rem}
.eyebrow{font-size:0.8rem;text-transform:uppercase;letter-spacing:0.12em;font-weight:700;color:var(--accent);margin:0 0 0.4rem}
.card{background:var(--card);padding:1rem;border-radius:14px;box-shadow:0 1px 2px rgba(0,0,0,.04);margin-bottom:1rem}
.hero{background:linear-gradient(130deg,#fff4f4 0%,#fff 100%);border:1px solid rgba(216,107,107,0.14)}
.button-row{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1rem}
.btn{display:inline-block;padding:0.8rem 1rem;background:var(--accent);color:#fff;border:none;border-radius:999px;font-weight:600}
.btn-secondary{background:#fff;color:var(--accent);border:1px solid rgba(216,107,107,0.2)}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0.75rem}
.info-card{display:block;padding:1rem;border-radius:12px;background:#fafafc;border:1px solid var(--border)}
.info-card h3{margin:0 0 0.3rem;font-size:1rem}
.info-card p{margin:0;color:var(--muted)}
.info-card.disabled-card{background:#f7f7fb;border-style:dashed;opacity:0.8;cursor:not-allowed}
.info-card.disabled-card h3{color:var(--muted)}
.card-badge{display:inline-block;margin-bottom:0.35rem;font-size:0.75rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--accent)}
.blog-preview{display:grid;gap:0.75rem}
.article-card{padding:1rem;border:1px solid var(--border);border-radius:12px;background:#fcfcfe}
.article-card.disabled-card{background:#f7f7fb;border-style:dashed;opacity:0.8}
.article-card.disabled-card h3{color:var(--muted)}
.meta{font-size:0.82rem;text-transform:uppercase;letter-spacing:0.08em;color:var(--muted);margin:0 0 .35rem}
.feature-list{padding-left:1rem;margin:0;color:var(--muted)}
.feature-list li{margin-bottom:0.45rem}
.note{color:var(--muted);font-size:0.95rem}
.muted{color:var(--muted)}
.footer{padding-bottom:2rem}
.footer-card{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.5rem}

.compact-intro{padding:.7rem .9rem .65rem}
.compact-intro .eyebrow{margin:0 0 .2rem;font-size:.72rem}
.compact-intro h1{font-size:1.15rem;margin:0}
.compact-intro .lead{margin:.25rem 0 0;font-size:.93rem}
.scroll-cue{margin:.35rem 0 0;font-size:.78rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--accent);display:inline-flex;align-items:center;gap:.3rem}
.scroll-cue-arrow{display:inline-block;animation:scrollHint 1.1s ease-in-out infinite}

@keyframes scrollHint{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(3px)}
}

label{display:block;font-size:0.9rem;margin-bottom:.25rem}
input[type=number],input[type=text],select{width:100%;padding:.6rem;border:1px solid var(--border);border-radius:8px;font-size:1rem}
button{display:inline-block;margin-top:.5rem;padding:.7rem 1rem;background:var(--accent);color:#fff;border:none;border-radius:8px;font-weight:600;cursor:pointer}
button:hover{background:var(--accent-dark)}
.field{margin-bottom:.75rem}
.row{display:flex;gap:.75rem;align-items:center;margin-bottom:.75rem;flex-wrap:wrap}
.checkbox{display:flex;align-items:center;gap:.5rem}
details summary{cursor:pointer;margin-bottom:.5rem}
#resultsList{padding-left:0}
.results-table{width:100%;border-collapse:collapse;margin-top:.25rem}
.results-table th,.results-table td{padding:.6rem .7rem;border:1px solid var(--border);text-align:left;vertical-align:top}
.results-table th{background:#fafafc;font-weight:600}
.results-table tr:nth-child(even) td{background:#fcfcfe}
.hidden{display:none}

.quick-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.45rem;width:100%}
.quick-grid-small{grid-template-columns:repeat(4,minmax(0,1fr));width:100%}
.toggle-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.45rem;width:100%}
.quick-btn{display:flex;align-items:center;justify-content:center;width:100%;min-height:44px;margin-top:0;padding:.65rem .55rem;background:#f5f6fa;border:1px solid #dfe3ee;color:#5f6572;border-radius:10px;font-weight:600;font-size:.95rem;line-height:1.2}
.quick-btn[aria-pressed="false"]{background:#f5f6fa;border-color:#dfe3ee;color:#5f6572}
.quick-btn[aria-pressed="true"]{border-color:var(--accent);background:rgba(216,107,107,0.13);color:var(--accent-dark)}
.quick-btn[aria-pressed="false"]:hover{background:#eceff6;color:#474f5f}
.quick-btn:focus-visible{outline:2px solid rgba(216,107,107,0.35);outline-offset:2px}

.floating-total{position:fixed;left:0;right:0;bottom:0;z-index:30;margin:0;border-radius:0;border-top:1px solid var(--border);box-shadow:0 -4px 16px rgba(0,0,0,0.12);padding:.65rem 1rem;background:var(--card);overflow:hidden}
.floating-total::before{content:"";position:absolute;inset:-18% -30%;background:linear-gradient(108deg,rgba(216,107,107,0) 0%,rgba(216,107,107,0) 32%,rgba(232,154,196,0.22) 46%,rgba(255,214,226,0.38) 52%,rgba(216,107,107,0.18) 58%,rgba(216,107,107,0) 72%,rgba(216,107,107,0) 100%);opacity:0;transform:translateX(-44%);pointer-events:none;filter:blur(1.2px)}
.floating-total.totals-updated{animation:totalsGlow .9s cubic-bezier(.2,.72,.23,1)}
.floating-total.totals-updated::before{animation:totalsAurora .9s cubic-bezier(.22,.73,.21,1)}
#resultsTotalLine{font-weight:700;font-size:1rem;color:#1f2330}
#resultsTotalLine.totals-value-updated{animation:totalsValueFlash .9s ease-out}
#resultsTotalLine .total-title{display:inline-block;margin-right:.45rem;padding:.12rem .38rem;border-radius:999px;background:#ffe8e8;color:#9a3f4b;font-size:.72rem;vertical-align:middle}
#resultsTotalLine .total-item{font-weight:600}
#resultsTotalLine .total-item strong{font-size:1.02rem;color:#111626}
#resultsTotalLine .total-item strong.totals-number-updated{display:inline-block;transform-origin:center bottom;animation:totalsNumberBloom .64s cubic-bezier(.18,.84,.22,1.1) both}
#resultsTotalLine .total-dot{display:inline-block;margin:0 .35rem;color:#9ba1af}
#resultsTotalLine .total-pack-note{display:block;margin-top:.2rem;font-size:.62rem;line-height:1.2;font-weight:600;color:#7a8090}
.floating-total-text{display:flex;flex-direction:column;gap:.15rem;min-width:0}
#resultsSummaryLine{font-size:.64rem;line-height:1.25;color:#7a8090;letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.floating-total-inner{position:relative;z-index:1;display:flex;flex-direction:column;gap:.5rem;align-items:stretch;max-width:960px;margin:0 auto}
.total-ad-slot{display:flex;align-items:center;gap:.5rem;width:100%}
.total-ad-label{font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:#8a8f9d;font-weight:700;white-space:nowrap}
.total-ad-box{flex:1;height:40px;border:1px dashed #cfd5e3;border-radius:8px;background:#f7f8fc;color:#6b7383;font-size:.85rem;display:flex;align-items:center;justify-content:center;min-width:0}
.more-settings-hint{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(var(--results-offset, 0px) + .45rem);z-index:29;background:#fff6f6;border:1px solid rgba(216,107,107,0.35);color:var(--accent-dark);font-size:.76rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:.32rem .6rem;border-radius:999px;box-shadow:0 2px 8px rgba(0,0,0,0.08);pointer-events:none}

@keyframes totalsGlow{
  0%{border-top-color:var(--border);box-shadow:0 -4px 16px rgba(0,0,0,0.12);background:var(--card)}
  38%{border-top-color:rgba(216,107,107,0.36);box-shadow:0 -10px 26px rgba(216,107,107,0.26);background:#fff8fb}
  100%{border-top-color:var(--border);box-shadow:0 -4px 16px rgba(0,0,0,0.12);background:var(--card)}
}

@keyframes totalsAurora{
  0%{opacity:0;transform:translateX(-44%)}
  20%{opacity:.72}
  72%{opacity:.48}
  100%{opacity:0;transform:translateX(44%)}
}

@keyframes totalsValueFlash{
  0%{color:#8e3d4a;letter-spacing:.01em;filter:saturate(1.2)}
  50%{color:#1f2330;letter-spacing:0;filter:saturate(1)}
  100%{color:#1f2330}
}

@keyframes totalsNumberBloom{
  0%{transform:translateY(2px) scale(.94);text-shadow:0 0 0 rgba(216,107,107,0)}
  55%{transform:translateY(0) scale(1.08);text-shadow:0 0 14px rgba(216,107,107,0.38)}
  100%{transform:translateY(0) scale(1);text-shadow:0 0 0 rgba(216,107,107,0)}
}

@media (prefers-reduced-motion: reduce){
  .floating-total.totals-updated,
  #resultsTotalLine.totals-value-updated{
    animation:none !important;
  }
}

/* shape picker */
.visually-hidden{position:absolute !important;left:-9999px !important;top:auto !important;width:1px !important;height:1px !important;overflow:hidden}
.shape-picker{display:flex;gap:.5rem;margin:0.5rem 0 1rem;flex-wrap:wrap}
.shape-btn{flex:1;min-width:110px;display:flex;flex-direction:column;align-items:center;gap:0.25rem;padding:.6rem;border:1px solid #e9e9f0;border-radius:10px;background:transparent;color:#333}
.shape-btn svg{color:var(--muted);width:48px;height:36px}
.shape-btn span{font-size:0.85rem}
.shape-btn[aria-pressed="true"]{border-color:var(--accent);background:rgba(216,107,107,0.06);color:var(--accent)}
.shape-btn:active{transform:translateY(1px)}

/* input with unit */
.input-with-unit{display:flex;gap:.5rem;align-items:center}
.unit-switch{display:inline-flex;border:1px solid var(--border);border-radius:8px;overflow:clip}
.unit-option{padding:.4rem .6rem;background:#fff;border:0;font-size:.95rem;min-width:44px;cursor:pointer;margin-top:0;color:var(--muted);border-radius:0}
.unit-option[aria-pressed="true"]{background:rgba(216,107,107,0.08);color:var(--accent);font-weight:600}
.unit-option:focus{outline:2px solid rgba(216,107,107,0.14);outline-offset:2px}

.article-page{max-width:760px}
.article-page h1{font-size:1.8rem}
.article-page .lead{font-size:1.05rem}
.article-page ul{padding-left:1rem}
.article-page li{margin-bottom:0.45rem}

@media(min-width:640px){
  .row{flex-wrap:nowrap}
  h1{font-size:1.75rem}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media(max-width:640px){
  .card-grid{grid-template-columns:1fr}
  .footer-card{flex-direction:column;align-items:flex-start}
  .compact-intro{padding:.65rem .8rem .6rem}
  .compact-intro h1{font-size:1.05rem}
  .compact-intro .lead{font-size:.88rem}
  body{padding-bottom:calc(var(--results-offset, 0px) + 1rem)}
  .container{padding-bottom:.4rem}
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .quick-grid-small{grid-template-columns:repeat(4,minmax(0,1fr))}
  .floating-total{left:0;right:0;bottom:0;padding-bottom:calc(.65rem + env(safe-area-inset-bottom))}
  #resultsTotalLine{font-size:.96rem}
  #resultsTotalLine .total-title{font-size:.64rem;padding:.1rem .3rem;margin-right:.35rem}
  #resultsTotalLine .total-item strong{font-size:.96rem}
  #resultsTotalLine .total-dot{margin:0 .25rem}
  #resultsTotalLine .total-pack-note{font-size:.58rem}
  #resultsSummaryLine{font-size:.6rem}
  .floating-total-inner{gap:.45rem}
  .total-ad-slot{gap:.4rem}
  .total-ad-label{font-size:.62rem}
  .total-ad-box{height:36px;font-size:.78rem}
  .more-settings-hint{font-size:.72rem;padding:.28rem .55rem;bottom:calc(var(--results-offset, 0px) + .35rem)}
}