/* ============================================================
   HUMA INTERIORS — Partition Cluster Stylesheet
   Shared by the pillar + 4 cluster/child pages (one cached file
   → smaller per-page payload, faster FCP/LCP).
   All classes scoped .prt- to avoid collisions with global CSS.
   Brand tokens: orange #E97724 / blue #2C358B, Cormorant + DM Sans.
   ── LOCATION: humainteriors.com/css/partition.css
   ============================================================ */

:root{
  --prt-orange:#E97724; --prt-orange-dk:#C85E12; --prt-orange-glow:#FDF0E6;
  --prt-blue:#2C358B; --prt-blue-dk:#1E2566; --prt-blue-glow:#EEF0F9;
  --prt-ink:#1A1A1A; --prt-body:#33353A; --prt-muted:#6A6E76; --prt-line:#E7E7E9;
  --prt-bg:#FAFAF9; --prt-card:#FFFFFF; --prt-cream:#F7F4EF;
  --prt-fd:'Cormorant Garamond',Georgia,serif;
  --prt-fb:'DM Sans',-apple-system,BlinkMacSystemFont,sans-serif;
  --prt-fa:'Bebas Neue',sans-serif;
  --prt-radius:14px; --prt-radius-sm:8px;
  --prt-shadow:0 2px 16px rgba(0,0,0,.06);
  --prt-shadow-hover:0 16px 40px rgba(0,0,0,.13);
}

/* ---------- Layout shell ---------- */
.prt-wrap{max-width:1240px;margin:0 auto;padding:0 22px}
.prt-main{font-family:var(--prt-fb);color:var(--prt-body);line-height:1.75;background:var(--prt-card)}
.prt-main *{box-sizing:border-box}

/* ---------- Breadcrumbs ---------- */
.prt-crumbs{font-size:.8rem;color:var(--prt-muted);padding:18px 0 0;letter-spacing:.01em}
.prt-crumbs a{color:var(--prt-muted);text-decoration:none;transition:color .2s}
.prt-crumbs a:hover{color:var(--prt-orange)}
.prt-crumbs span{color:var(--prt-ink);font-weight:600}
.prt-crumbs .sep{margin:0 7px;opacity:.5}

/* ---------- Hero ---------- */
.prt-hero{padding:34px 0 26px;border-bottom:1px solid var(--prt-line)}
.prt-eyebrow{display:inline-block;font-family:var(--prt-fb);font-size:.7rem;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--prt-orange);
  background:var(--prt-orange-glow);padding:5px 13px;border-radius:100px;margin-bottom:16px}
.prt-h1{font-family:var(--prt-fd);font-weight:700;font-size:clamp(2.1rem,4.6vw,3.3rem);
  line-height:1.08;color:var(--prt-ink);margin:0 0 14px;letter-spacing:-.01em}
.prt-h1 em{font-style:italic;color:var(--prt-orange)}
.prt-dek{font-size:1.08rem;color:var(--prt-muted);max-width:720px;margin:0 0 18px}
.prt-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;font-size:.82rem;color:var(--prt-muted)}
.prt-meta .prt-author{display:flex;align-items:center;gap:9px;font-weight:600;color:var(--prt-ink)}
.prt-meta .prt-author img{width:34px;height:34px;border-radius:50%;object-fit:cover;background:var(--prt-cream)}
.prt-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--prt-muted);opacity:.6}

/* ---------- 3-column grid: TOC · body · social ---------- */
.prt-grid{display:grid;grid-template-columns:230px minmax(0,1fr) 60px;gap:44px;padding:34px 0 60px;align-items:start}
@media(max-width:1040px){.prt-grid{grid-template-columns:minmax(0,1fr);gap:0}}

/* ---------- Sticky TOC ---------- */
.prt-toc{position:sticky;top:96px;align-self:start;font-size:.86rem}
.prt-toc h4{font-family:var(--prt-fb);font-size:.68rem;font-weight:700;letter-spacing:.15em;
  text-transform:uppercase;color:var(--prt-orange);margin:0 0 13px}
.prt-toc a{display:block;padding:6px 0 6px 13px;color:var(--prt-muted);text-decoration:none;
  border-left:2px solid var(--prt-line);line-height:1.35;transition:.2s}
.prt-toc a:hover,.prt-toc a.active{color:var(--prt-blue);border-left-color:var(--prt-orange);font-weight:600}
/* Mobile collapsible TOC */
.prt-toc-mobile{display:none}
@media(max-width:1040px){
  .prt-toc{display:none}
  .prt-toc-mobile{display:block;margin:8px 0 22px;border:1px solid var(--prt-line);border-radius:var(--prt-radius-sm);overflow:hidden}
  .prt-toc-mobile summary{cursor:pointer;padding:13px 16px;font-weight:700;font-size:.9rem;color:var(--prt-ink);
    background:var(--prt-bg);list-style:none;display:flex;justify-content:space-between;align-items:center}
  .prt-toc-mobile summary::-webkit-details-marker{display:none}
  .prt-toc-mobile summary::after{content:'▾';color:var(--prt-orange);transition:transform .2s}
  .prt-toc-mobile[open] summary::after{transform:rotate(180deg)}
  .prt-toc-mobile nav{padding:8px 16px 14px}
  .prt-toc-mobile a{display:block;padding:6px 0;color:var(--prt-muted);text-decoration:none;font-size:.9rem}
  .prt-toc-mobile a:hover{color:var(--prt-orange)}
}

/* ---------- Article body ---------- */
.prt-body{min-width:0;font-size:1.02rem}
.prt-body h2{font-family:var(--prt-fd);font-weight:700;font-size:1.85rem;color:var(--prt-ink);
  margin:38px 0 12px;line-height:1.18;scroll-margin-top:96px}
.prt-body h3{font-family:var(--prt-fb);font-weight:700;font-size:1.2rem;color:var(--prt-blue);
  margin:26px 0 9px;scroll-margin-top:96px}
.prt-body p{margin:0 0 16px}
.prt-body a{color:var(--prt-orange-dk);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px}
.prt-body a:hover{color:var(--prt-orange)}
.prt-body strong{color:var(--prt-ink);font-weight:700}
.prt-body ul,.prt-body ol{margin:0 0 18px;padding-left:22px}
.prt-body li{margin-bottom:9px}
.prt-body .lead{font-size:1.16rem;line-height:1.65;color:var(--prt-ink)}
.prt-body img{max-width:100%;height:auto;border-radius:var(--prt-radius);margin:8px 0 6px;display:block}
.prt-figure{margin:22px 0}
.prt-figure figcaption{font-size:.8rem;color:var(--prt-muted);margin-top:8px;text-align:center;font-style:italic}

/* Callout / key-fact box */
.prt-note{background:var(--prt-orange-glow);border-left:4px solid var(--prt-orange);
  padding:16px 18px;border-radius:0 var(--prt-radius-sm) var(--prt-radius-sm) 0;margin:22px 0;font-size:.96rem}
.prt-note b{color:var(--prt-orange-dk)}
.prt-tip{background:var(--prt-blue-glow);border-left:4px solid var(--prt-blue);
  padding:16px 18px;border-radius:0 var(--prt-radius-sm) var(--prt-radius-sm) 0;margin:22px 0;font-size:.96rem}
.prt-tip b{color:var(--prt-blue-dk)}

/* Comparison / cost table */
.prt-table-wrap{overflow-x:auto;margin:22px 0}
.prt-table{width:100%;border-collapse:collapse;font-size:.9rem;min-width:520px}
.prt-table th,.prt-table td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--prt-line);vertical-align:top}
.prt-table th{background:var(--prt-blue);color:#fff;font-weight:600;font-size:.8rem;letter-spacing:.02em}
.prt-table tr:nth-child(even) td{background:var(--prt-bg)}
.prt-table td:first-child{font-weight:600;color:var(--prt-ink)}

/* Idea cards grid (materials / types) */
.prt-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin:24px 0}
.prt-card{background:var(--prt-card);border:1px solid var(--prt-line);border-radius:var(--prt-radius);
  padding:22px 20px;transition:transform .25s,box-shadow .25s,border-color .25s}
.prt-card:hover{transform:translateY(-4px);box-shadow:var(--prt-shadow-hover);border-color:var(--prt-orange)}
.prt-card h3{margin:0 0 8px;color:var(--prt-ink);font-size:1.08rem}
.prt-card p{font-size:.9rem;color:var(--prt-muted);margin:0}
.prt-card .prt-card-tag{font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--prt-orange);display:block;margin-bottom:8px}

/* ---------- Social share rail ---------- */
.prt-share{position:sticky;top:96px;display:flex;flex-direction:column;gap:10px;align-self:start}
.prt-share a{width:40px;height:40px;border-radius:50%;border:1px solid var(--prt-line);
  display:flex;align-items:center;justify-content:center;color:var(--prt-muted);
  background:var(--prt-card);transition:.2s;text-decoration:none}
.prt-share a:hover{border-color:var(--prt-orange);color:var(--prt-orange);transform:translateY(-2px)}
.prt-share svg{width:17px;height:17px;fill:currentColor}
@media(max-width:1040px){
  .prt-share{position:static;flex-direction:row;justify-content:center;gap:12px;margin:30px 0 0;padding-top:24px;border-top:1px solid var(--prt-line)}
}

/* ---------- Lead form ---------- */
.prt-lead{background:linear-gradient(150deg,var(--prt-blue) 0%,var(--prt-blue-dk) 100%);
  color:#fff;border-radius:var(--prt-radius);padding:30px 28px;margin:34px 0;box-shadow:var(--prt-shadow)}
.prt-lead h3{font-family:var(--prt-fd);font-size:1.7rem;font-weight:700;color:#fff;margin:0 0 6px}
.prt-lead p{color:rgba(255,255,255,.82);font-size:.94rem;margin:0 0 18px}
.prt-lead form{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.prt-lead input,.prt-lead select,.prt-lead textarea{width:100%;padding:12px 14px;border:none;
  border-radius:var(--prt-radius-sm);font-family:var(--prt-fb);font-size:.94rem;background:#fff;color:var(--prt-ink)}
.prt-lead textarea{grid-column:1/-1;resize:vertical;min-height:72px}
.prt-lead .full{grid-column:1/-1}
.prt-lead button{grid-column:1/-1;background:var(--prt-orange);color:#fff;border:none;padding:14px;
  border-radius:var(--prt-radius-sm);font-family:var(--prt-fb);font-weight:700;font-size:1rem;cursor:pointer;
  transition:background .2s,transform .15s;letter-spacing:.01em}
.prt-lead button:hover{background:var(--prt-orange-dk);transform:translateY(-1px)}
.prt-lead .prt-form-status{grid-column:1/-1;font-size:.9rem;margin-top:4px;min-height:1.2em}
.prt-lead .prt-form-status.success{color:#8fe3a8}
.prt-lead .prt-form-status.error{color:#ffb4a8}
@media(max-width:560px){.prt-lead form{grid-template-columns:1fr}}

/* ---------- Inline CTA band ---------- */
.prt-cta{background:var(--prt-cream);border:1px solid var(--prt-line);border-radius:var(--prt-radius);
  padding:26px 28px;margin:30px 0;text-align:center}
.prt-cta h3{font-family:var(--prt-fd);font-size:1.5rem;color:var(--prt-ink);margin:0 0 8px}
.prt-cta p{color:var(--prt-muted);margin:0 0 16px;font-size:.95rem}
.prt-cta-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.prt-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:100px;
  font-family:var(--prt-fb);font-weight:700;font-size:.94rem;text-decoration:none;transition:.2s;cursor:pointer;border:none}
.prt-btn-primary{background:var(--prt-orange);color:#fff}
.prt-btn-primary:hover{background:var(--prt-orange-dk);transform:translateY(-2px)}
.prt-btn-outline{background:transparent;color:var(--prt-blue);border:1.5px solid var(--prt-blue)}
.prt-btn-outline:hover{background:var(--prt-blue);color:#fff}

/* ---------- FAQ ---------- */
.prt-faq{margin:38px 0}
.prt-faq h2{font-family:var(--prt-fd);font-size:1.85rem;color:var(--prt-ink);margin:0 0 18px}
.prt-faq details{border:1px solid var(--prt-line);border-radius:var(--prt-radius-sm);margin-bottom:12px;
  overflow:hidden;background:var(--prt-card)}
.prt-faq summary{cursor:pointer;padding:16px 20px;font-weight:700;font-size:1rem;color:var(--prt-ink);
  list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px;transition:background .2s}
.prt-faq summary::-webkit-details-marker{display:none}
.prt-faq summary::after{content:'+';font-size:1.4rem;color:var(--prt-orange);font-weight:400;transition:transform .2s}
.prt-faq details[open] summary{background:var(--prt-bg)}
.prt-faq details[open] summary::after{content:'−'}
.prt-faq .prt-faq-a{padding:2px 20px 18px;color:var(--prt-body);font-size:.96rem;line-height:1.7}

/* ---------- Related posts ---------- */
.prt-related{background:var(--prt-bg);border-top:1px solid var(--prt-line);padding:44px 0}
.prt-related h2{font-family:var(--prt-fd);font-size:1.7rem;color:var(--prt-ink);text-align:center;margin:0 0 26px}
.prt-related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:820px){.prt-related-grid{grid-template-columns:1fr}}
.prt-rc{background:var(--prt-card);border:1px solid var(--prt-line);border-radius:var(--prt-radius);
  overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.prt-rc:hover{transform:translateY(-5px);box-shadow:var(--prt-shadow-hover)}
.prt-rc-img{aspect-ratio:16/10;background:var(--prt-cream);overflow:hidden}
.prt-rc-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.prt-rc:hover .prt-rc-img img{transform:scale(1.06)}
.prt-rc-body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.prt-rc-cat{font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--prt-orange);margin-bottom:8px}
.prt-rc-title{font-family:var(--prt-fb);font-weight:700;font-size:1rem;line-height:1.35;color:var(--prt-ink);
  text-decoration:none;margin-bottom:10px}
.prt-rc:hover .prt-rc-title{color:var(--prt-orange)}
.prt-rc-more{margin-top:auto;font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--prt-orange);text-decoration:none}

/* ---------- Floating WhatsApp ---------- */
.prt-wa{position:fixed;bottom:24px;right:24px;z-index:1100;width:56px;height:56px;border-radius:50%;
  background:#25D366;display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 24px rgba(37,211,102,.45);transition:transform .25s;animation:prt-wa-pulse 2.4s infinite}
.prt-wa:hover{transform:scale(1.08)}
.prt-wa svg{width:30px;height:30px;fill:#fff}
@keyframes prt-wa-pulse{0%,100%{box-shadow:0 8px 24px rgba(37,211,102,.45)}
  50%{box-shadow:0 8px 24px rgba(37,211,102,.45),0 0 0 12px rgba(37,211,102,0)}}
@media(max-width:600px){.prt-wa{width:52px;height:52px;bottom:18px;right:18px}}

/* ---------- Reading progress ---------- */
.prt-progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:1200;
  background:linear-gradient(90deg,var(--prt-orange),#F5A05A);transition:width .1s linear}

/* ---------- Reveal on scroll ---------- */
.prt-reveal{opacity:0;transform:translateY(20px);transition:opacity .6s cubic-bezier(.4,0,.2,1),transform .6s cubic-bezier(.4,0,.2,1)}
.prt-reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.prt-reveal{opacity:1;transform:none;transition:none}}