/* RoomGPT SEO pages — shared design system (matches index.html brand) */
:root{
  --primary:#6366F1; --accent:#DB2777; --ink:#1F2937; --muted:#6B7280;
  --line:#E5E7EB; --bg-soft:#F9FAFB; --footer:#1F2937;
  --grad:linear-gradient(135deg,#6366F1 0%,#DB2777 100%);
  --radius:14px; --shadow:0 4px 16px rgba(0,0,0,.06);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;background:#fff;color:var(--ink);-webkit-font-smoothing:antialiased;line-height:1.65}
img{max-width:100%;display:block}
a{color:inherit}
.container{max-width:1140px;margin:0 auto;padding:0 20px}
.gradient-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* Nav */
.nav{display:flex;justify-content:space-between;align-items:center;padding:14px 0;position:sticky;top:0;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);z-index:100;border-bottom:1px solid var(--line)}
.logo{display:flex;align-items:center;gap:8px;font-size:21px;font-weight:800;color:var(--ink);text-decoration:none}
.logo-icon{font-size:26px}
.nav-links{display:flex;gap:22px;align-items:center}
.nav-links a{color:var(--muted);text-decoration:none;font-weight:500;font-size:15px;transition:color .2s}
.nav-links a:hover{color:var(--primary)}
.nav-cta{background:var(--grad);color:#fff!important;padding:9px 18px;border-radius:8px;font-weight:600!important}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(99,102,241,.3)}

/* Breadcrumbs */
.crumbs{font-size:13px;color:var(--muted);padding:18px 0 0}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--primary)}
.crumbs span{margin:0 6px}

/* Hero */
.lp-hero{padding:34px 0 14px}
.lp-hero h1{font-size:clamp(28px,4.6vw,46px);font-weight:800;line-height:1.12;margin-bottom:16px}
.lp-lead{font-size:clamp(16px,2vw,18px);color:var(--muted);max-width:680px;margin-bottom:24px}
.hero-media{margin:22px 0 8px;border-radius:18px;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.14)}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-media .hero-slider{position:relative;width:100%;aspect-ratio:16/9}
.hero-media .hero-slider .slider-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;user-select:none;-webkit-user-drag:none}
.hero-media .hero-slider .slider-before{animation:roomgptHeroReveal 7s ease-in-out infinite;will-change:clip-path}
.hero-media .hero-slider .slider-divider{position:absolute;top:0;bottom:0;left:0%;width:3px;background:rgba(255,255,255,.95);box-shadow:0 0 12px rgba(0,0,0,.35);transform:translateX(-50%);animation:roomgptHeroDivider 7s ease-in-out infinite;will-change:left;pointer-events:none}
.hero-media .hero-slider .slider-label{position:absolute;top:16px;left:16px;padding:6px 12px;background:rgba(17,24,39,.78);color:#fff;font-size:11px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;border-radius:999px;pointer-events:none;z-index:1;display:grid;place-items:center}
.hero-media .hero-slider .slider-text{grid-area:1/1}
.hero-media .hero-slider .slider-text-before{opacity:1;animation:roomgptLabelBefore 7s ease-in-out infinite}
.hero-media .hero-slider .slider-text-after{opacity:0;animation:roomgptLabelAfter 7s ease-in-out infinite}
@keyframes roomgptHeroReveal{0%,8%{clip-path:inset(0 0 0 0%)}42%,58%{clip-path:inset(0 0 0 100%)}92%,100%{clip-path:inset(0 0 0 0%)}}
@keyframes roomgptHeroDivider{0%,8%{left:0%}42%,58%{left:100%}92%,100%{left:0%}}
@keyframes roomgptLabelBefore{0%,18%{opacity:1}32%,68%{opacity:0}82%,100%{opacity:1}}
@keyframes roomgptLabelAfter{0%,18%{opacity:0}32%,68%{opacity:1}82%,100%{opacity:0}}
@media (max-width:768px){.hero-media .hero-slider .slider-label{top:10px;left:10px;padding:4px 10px;font-size:10px}}
@media (prefers-reduced-motion:reduce){.hero-media .hero-slider .slider-before,.hero-media .hero-slider .slider-divider,.hero-media .hero-slider .slider-text-before,.hero-media .hero-slider .slider-text-after{animation:none}.hero-media .hero-slider .slider-before{clip-path:inset(0 0 0 50%)}.hero-media .hero-slider .slider-divider{left:50%}}

/* CTA */
.cta-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin:8px 0 4px}
.btn-primary{display:inline-flex;align-items:center;gap:10px;background:var(--grad);color:#fff;padding:15px 26px;border-radius:12px;font-size:16px;font-weight:700;text-decoration:none;transition:all .2s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(99,102,241,.4)}
.app-badges{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.app-badge{height:46px;transition:transform .2s}
.app-badge:hover{transform:scale(1.05)}
.os-hint{font-size:13px;color:var(--muted);margin-top:6px}

/* Tri-modal OS-aware CTA (used on the /free Ads landing). JS sets html[data-os]. */
.osblock{display:none}
.osblock.show{display:block}
.qr-wrap{display:flex;align-items:center;gap:20px;flex-wrap:wrap;background:var(--bg-soft);border:1px solid var(--line);border-radius:16px;padding:20px;max-width:560px}
.qr-wrap img.qr{width:120px;height:120px;border-radius:10px;background:#fff;padding:6px;border:1px solid var(--line)}
.qr-copy{flex:1;min-width:200px}
.qr-copy h3{font-size:17px;font-weight:800;margin-bottom:4px}
.qr-copy p{font-size:14px;color:var(--muted);margin-bottom:10px}

/* Sections */
section{padding:34px 0}
.section-title{font-size:clamp(22px,3vw,30px);font-weight:800;margin-bottom:10px}
.section-sub{color:var(--muted);margin-bottom:24px;max-width:760px}
.prose p{margin-bottom:14px;color:#374151}
.prose h2{font-size:clamp(20px,2.6vw,26px);font-weight:800;margin:26px 0 10px}
.prose h3{font-size:18px;font-weight:700;margin:18px 0 8px}
.prose ul{margin:0 0 14px 20px;color:#374151}
.prose li{margin-bottom:6px}

/* Card grids */
.grid{display:grid;gap:16px}
.grid.cols-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid.cols-3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.grid.cols-4{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.tile{display:block;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;color:var(--ink);background:#fff;transition:transform .2s,box-shadow .2s}
.tile:hover{transform:translateY(-4px);box-shadow:0 10px 26px rgba(0,0,0,.1)}
.tile img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--bg-soft)}
.tile-body{padding:12px 14px}
.tile-name{font-weight:700;font-size:15px}
.tile-desc{font-size:13px;color:var(--muted);margin-top:2px}

/* FAQ */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{font-weight:700;cursor:pointer;list-style:none;font-size:16px;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--primary);font-weight:800}
.faq details[open] summary::after{content:"–"}
.faq p{margin-top:10px;color:#374151}

/* Banner CTA */
.band{background:var(--grad);color:#fff;border-radius:18px;padding:36px 28px;text-align:center;margin:14px 0}
.band h2{font-size:clamp(22px,3vw,30px);font-weight:800;margin-bottom:8px}
.band p{opacity:.92;margin-bottom:20px}
.band .btn-primary{background:#fff;color:var(--primary)}
.band .app-badges{justify-content:center;margin-top:18px}

/* Calculator tool UI */
.tool{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start;border:1px solid var(--line);border-radius:18px;padding:24px;background:var(--bg-soft)}
.tool label{display:block;font-size:14px;font-weight:600;margin:12px 0 6px}
.tool input,.tool select{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit;background:#fff}
.tool .result{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px}
.tool .result .big{font-size:34px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.tool .result .rlabel{font-size:13px;color:var(--muted)}
.tool .result .line{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--line);font-size:14px}
.tool .result .line:last-child{border-bottom:none}

/* Footer */
footer{background:var(--footer);color:#fff;padding:48px 0 28px;margin-top:40px}
.foot-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr 1fr;gap:26px}
.foot-brand{display:flex;align-items:center;gap:8px;font-size:20px;font-weight:800;margin-bottom:10px}
.foot-tag{color:#9CA3AF;font-size:14px;max-width:260px}
.foot-col h4{font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:#D1D5DB;margin-bottom:12px}
.foot-col a{display:block;color:#9CA3AF;text-decoration:none;font-size:14px;padding:4px 0;transition:color .2s}
.foot-col a:hover{color:#fff}
.foot-bottom{border-top:1px solid #374151;margin-top:32px;padding-top:20px;color:#6B7280;font-size:13px;text-align:center}
.lang-switch{margin:14px 0 4px;display:flex;flex-wrap:wrap;gap:8px 14px;justify-content:center}
.lang-switch a{color:#9CA3AF;text-decoration:none;font-size:13px}
.lang-switch a:hover{color:#fff}
.lang-switch strong{color:#fff;font-size:13px;font-weight:700}

/* RTL (Arabic, etc.) */
html[dir="rtl"] body{text-align:right}
html[dir="rtl"] .prose ul{margin:0 20px 14px 0}
html[dir="rtl"] .crumbs span{margin:0 6px}
html[dir="rtl"] .tool .result .line,html[dir="rtl"] .faq summary{flex-direction:row-reverse}
html[dir="rtl"] .qr-copy{text-align:right}
html[dir="rtl"] .cta-row,html[dir="rtl"] .app-badges{justify-content:flex-start}

@media (max-width:768px){
  .nav-links a:not(.nav-cta){display:none}
  .tool{grid-template-columns:1fr}
  .foot-cols{grid-template-columns:1fr 1fr;gap:20px}
}
@supports(padding:max(0px)){.container{padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}}