/* =========================================================
   Ember & Flue — Premium stove theme
   Palette: charcoal / copper / cream
   ========================================================= */
:root{
  --bg:#0f0e0d;
  --bg-2:#151311;
  --surface:#1b1815;
  --line:rgba(243,235,224,.09);
  --line-strong:rgba(200,134,74,.35);
  --copper:#c8864a;
  --copper-2:#e0a96d;
  --ember:#e2622a;
  --cream:#f3ebe0;
  --muted:#a89e92;
  --serif:"Fraunces",Georgia,serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
  --radius:18px;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--cream);font-family:var(--sans);font-weight:300;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body.loading{overflow:hidden}
img,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
svg{fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
em{font-style:italic;color:var(--copper-2)}
::selection{background:var(--copper);color:var(--bg)}

.container{width:min(1200px,100% - 48px);margin-inline:auto}
.section{padding:120px 0}

/* subtle film grain */
body::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:999;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

/* ---------- Preloader ---------- */
.preloader{position:fixed;inset:0;z-index:1000;background:var(--bg);display:grid;place-items:center;transition:opacity .8s var(--ease),visibility .8s}
.preloader.done{opacity:0;visibility:hidden}
.preloader-flame{width:46px;fill:var(--copper);stroke:none;animation:flicker 1.2s ease-in-out infinite;transform-origin:50% 90%;filter:drop-shadow(0 0 22px rgba(226,98,42,.7))}

@keyframes flicker{0%,100%{transform:scale(1,1)}33%{transform:scale(.94,1.06) rotate(-2deg)}66%{transform:scale(1.04,.95) rotate(2deg)}}

/* ---------- Typography helpers ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:500;letter-spacing:3px;text-transform:uppercase;color:var(--copper-2)}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--ember);box-shadow:0 0 12px var(--ember);animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.35}}
.section-title{font-family:var(--serif);font-weight:400;font-size:clamp(34px,4.4vw,56px);line-height:1.08;letter-spacing:-.02em;margin-top:14px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:60px}
.section-head.center{flex-direction:column;align-items:center;text-align:center}
.section-aside{max-width:380px;color:var(--muted)}
.section-sub{color:var(--muted);max-width:520px;margin-top:6px}

/* ---------- Buttons ---------- */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:12px;font-size:14px;font-weight:500;letter-spacing:.2px;padding:16px 30px;border-radius:100px;overflow:hidden;cursor:pointer;border:0;font-family:inherit;transition:transform .4s var(--ease),box-shadow .4s var(--ease),background .4s,color .4s}
.btn svg{width:17px;height:17px;transition:transform .4s var(--ease)}
.btn:hover svg{transform:translateX(5px)}
.btn-primary{background:linear-gradient(135deg,var(--copper-2),var(--copper));color:#1a0f06;box-shadow:0 10px 30px -10px rgba(200,134,74,.6)}
.btn-primary::before{content:"";position:absolute;top:0;left:-75%;width:50%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.5),transparent);transform:skewX(-20deg);transition:left .8s var(--ease)}
.btn-primary:hover{box-shadow:0 18px 40px -10px rgba(226,98,42,.7)}
.btn-primary:hover::before{left:130%}
.btn-ghost{border:1px solid var(--line-strong);color:var(--cream);padding:12px 20px;background:rgba(255,255,255,.02)}
.btn-ghost:hover{background:var(--copper);color:#1a0f06;border-color:var(--copper)}
.btn-link{padding:10px 6px;color:var(--cream)}
.btn-link .play{width:44px;height:44px;border-radius:50%;border:1px solid var(--line-strong);display:grid;place-items:center;transition:all .4s var(--ease)}
.btn-link .play svg{width:14px;height:14px;fill:var(--copper-2);stroke:none;transform:none!important}
.btn-link:hover .play{background:var(--copper);border-color:var(--copper);box-shadow:0 0 0 8px rgba(200,134,74,.15)}
.btn-link:hover .play svg{fill:#1a0f06}
.btn.full{width:100%}

/* ---------- Header ---------- */
.header{position:fixed;inset:0 0 auto;z-index:100;transition:background .5s,backdrop-filter .5s,border-color .5s;border-bottom:1px solid transparent}
.header.scrolled{background:rgba(15,14,13,.78);backdrop-filter:blur(18px) saturate(140%);border-color:var(--line)}
.nav{height:88px;display:flex;align-items:center;justify-content:space-between;transition:height .5s var(--ease)}
.header.scrolled .nav{height:72px}
.logo{display:flex;align-items:center;gap:12px}
.logo-mark{width:30px;height:36px;stroke:none;transition:transform .6s var(--ease)}
.logo-outer{fill:url(#none);fill:var(--copper)}
.logo-flue{fill:var(--bg)}
.logo:hover .logo-mark{transform:rotate(-8deg) scale(1.08)}
.logo-text strong{display:block;font-family:var(--serif);font-weight:500;font-size:22px;line-height:1;letter-spacing:-.3px}
.logo-text small{display:block;font-size:10px;letter-spacing:6px;color:var(--copper-2);margin-top:5px;font-weight:500}
.menu{display:flex;gap:38px}
.menu a{position:relative;font-size:14px;color:rgba(243,235,224,.8);padding:6px 0;transition:color .3s}
.menu a::after{content:"";position:absolute;left:50%;bottom:-2px;width:0;height:1px;background:var(--copper-2);transition:all .45s var(--ease)}
.menu a:hover,.menu a.active{color:var(--cream)}
.menu a:hover::after,.menu a.active::after{left:0;width:100%}
.nav-actions{display:flex;align-items:center;gap:14px}
.phone svg{width:16px;height:16px}
.phone:hover svg{animation:ring .6s}
@keyframes ring{25%{transform:rotate(-15deg)}75%{transform:rotate(15deg)}}
.burger{display:none;width:44px;height:44px;border-radius:50%;border:1px solid var(--line-strong);background:none;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:6px}
.burger span{width:18px;height:1.5px;background:var(--cream);transition:transform .4s var(--ease)}
.burger.open span:first-child{transform:translateY(3.75px) rotate(45deg)}
.burger.open span:last-child{transform:translateY(-3.75px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.hero-media{position:absolute;inset:0}
.hero-video{width:100%;height:100%;object-fit:cover;transform:scale(1.08);animation:heroZoom 14s var(--ease) forwards}
@keyframes heroZoom{to{transform:scale(1)}}
.hero-overlay{position:absolute;inset:0;background:
  linear-gradient(90deg,rgba(15,14,13,.95) 0%,rgba(15,14,13,.75) 38%,rgba(15,14,13,.2) 70%,rgba(15,14,13,.35) 100%),
  linear-gradient(0deg,var(--bg) 0%,transparent 30%)}
.embers{position:absolute;inset:0;pointer-events:none}
.ember{position:absolute;bottom:-10px;width:3px;height:3px;border-radius:50%;background:var(--copper-2);box-shadow:0 0 8px 2px rgba(226,98,42,.8);animation:rise linear infinite}
@keyframes rise{0%{transform:translate(0,0);opacity:0}10%{opacity:1}100%{transform:translate(var(--x),-100vh);opacity:0}}
.hero-inner{position:relative;z-index:2;padding-top:90px}
.hero-content{max-width:620px}
.hero-title{font-family:var(--serif);font-weight:400;font-size:clamp(46px,6.6vw,88px);line-height:1.02;letter-spacing:-.03em;margin:22px 0 26px}
.hero-title em{background:linear-gradient(90deg,var(--copper-2),#f6d2a4,var(--copper));background-size:200% auto;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:sheen 6s linear infinite}
@keyframes sheen{to{background-position:200% center}}
.hero-lead{font-size:17px;color:rgba(243,235,224,.78);max-width:500px}
.hero-cta{display:flex;align-items:center;gap:26px;margin-top:38px;flex-wrap:wrap}
.hero-trust{display:flex;gap:34px;margin-top:54px;padding-top:30px;border-top:1px solid var(--line);flex-wrap:wrap}
.cert-badge{display:flex;align-items:center;gap:14px}
.cert-badge svg{width:40px;height:40px;color:var(--copper-2);padding:8px;border:1px solid var(--line-strong);border-radius:12px}
.cert-badge strong{display:block;font-size:14px;font-weight:500}
.cert-badge span,.rating span{font-size:12.5px;color:var(--muted)}
.stars{color:var(--copper-2);letter-spacing:3px;font-size:15px}
.scroll-cue{position:absolute;bottom:34px;left:50%;translate:-50% 0;z-index:3;width:26px;height:42px;border:1px solid rgba(243,235,224,.35);border-radius:20px}
.scroll-cue span{position:absolute;top:8px;left:50%;width:3px;height:8px;margin-left:-1.5px;border-radius:3px;background:var(--copper-2);animation:scroll 2s infinite}
@keyframes scroll{0%{opacity:0;transform:translateY(0)}40%{opacity:1}100%{opacity:0;transform:translateY(14px)}}

/* load-in animation */
.load{opacity:0;transform:translateY(30px);animation:loadUp 1.1s var(--ease) forwards;animation-delay:calc(var(--d,0s) + .6s)}
@keyframes loadUp{to{opacity:1;transform:none}}

/* ---------- Marquee ---------- */
.marquee{border-block:1px solid var(--line);overflow:hidden;padding:22px 0;background:var(--bg-2)}
.marquee-track{display:flex;gap:40px;width:max-content;animation:marquee 32s linear infinite;font-family:var(--serif);font-size:22px;font-style:italic;color:rgba(243,235,224,.55);white-space:nowrap}
.marquee-track i{color:var(--copper);font-style:normal;font-size:14px;align-self:center}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- Features ---------- */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;padding:100px 0 0}
.feature{padding:34px 28px;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(180deg,var(--surface),transparent);transition:transform .5s var(--ease),border-color .5s,background .5s}
.feature:hover{transform:translateY(-8px);border-color:var(--line-strong);background:linear-gradient(180deg,rgba(200,134,74,.08),transparent)}
.feature-icon{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;background:rgba(200,134,74,.1);color:var(--copper-2);margin-bottom:24px;transition:transform .6s var(--ease),background .5s,color .5s}
.feature-icon svg{width:26px;height:26px}
.feature:hover .feature-icon{transform:rotate(-8deg) scale(1.08);background:var(--copper);color:#1a0f06}
.feature h3{font-family:var(--serif);font-weight:500;font-size:21px;margin-bottom:8px}
.feature p{font-size:14.5px;color:var(--muted)}

/* ---------- Stoves ---------- */
.link-arrow{display:inline-flex;align-items:center;gap:10px;margin-top:18px;color:var(--copper-2);font-weight:500;font-size:14px}
.link-arrow svg{width:16px;height:16px;transition:transform .4s var(--ease)}
.link-arrow:hover svg{transform:translateX(6px)}
.stove-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stove-card{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--surface);border:1px solid var(--line);transition:transform .6s var(--ease),border-color .5s,box-shadow .6s;transform-style:preserve-3d}
.stove-img{aspect-ratio:4/5;overflow:hidden;position:relative}
.stove-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease),filter .8s}
.stove-img::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,var(--surface) 0%,rgba(27,24,21,.2) 45%,transparent 70%)}
.stove-card:hover{border-color:var(--line-strong);box-shadow:0 30px 60px -20px rgba(0,0,0,.7),0 0 40px -10px rgba(200,134,74,.25)}
.stove-card:hover img{transform:scale(1.08);filter:saturate(1.15)}
.stove-body{position:absolute;inset:auto 0 0;padding:26px 24px}
.stove-num{font-size:12px;letter-spacing:2px;color:var(--copper-2)}
.stove-body h3{font-family:var(--serif);font-weight:500;font-size:24px;margin:6px 0 4px}
.stove-body p{font-size:14px;color:var(--muted);max-width:80%}
.stove-go{position:absolute;right:22px;bottom:26px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line-strong);display:grid;place-items:center;color:var(--copper-2);transition:all .5s var(--ease)}
.stove-go svg{width:18px;height:18px}
.stove-card:hover .stove-go{background:var(--copper);color:#1a0f06;transform:rotate(45deg)}

/* ---------- Process ---------- */
.process{background:var(--bg-2);border-block:1px solid var(--line)}
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.steps-line{position:absolute;top:32px;left:32px;right:32px;height:1px;background:var(--line)}
.steps-line span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--copper),var(--ember));box-shadow:0 0 12px var(--ember);transition:width .2s linear}
.step{position:relative}
.step-num{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:var(--bg);border:1px solid var(--line-strong);font-family:var(--serif);font-size:20px;color:var(--copper-2);margin-bottom:28px;position:relative;z-index:1;transition:all .5s var(--ease)}
.step:hover .step-num{background:var(--copper);color:#1a0f06;box-shadow:0 0 0 10px rgba(200,134,74,.12);transform:scale(1.06)}
.step h3{font-family:var(--serif);font-weight:500;font-size:22px;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--muted)}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:center}
.about-img{position:relative;border-radius:24px;overflow:hidden;aspect-ratio:4/5}
.about-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.4s var(--ease)}
.about-img:hover img{transform:scale(1.05)}
.about-tag{position:absolute;left:24px;bottom:24px;padding:18px 22px;border-radius:14px;background:rgba(15,14,13,.6);backdrop-filter:blur(14px);border:1px solid var(--line)}
.about-tag strong{display:block;font-family:var(--serif);font-size:22px;font-weight:500}
.about-tag span{font-size:12.5px;color:var(--muted)}
.about-copy>p{color:var(--muted);margin-top:20px;font-size:16px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px;padding-top:36px;border-top:1px solid var(--line)}
.stat strong{display:block;font-family:var(--serif);font-weight:400;font-size:44px;color:var(--copper-2);line-height:1}
.stat>span{font-size:13px;color:var(--muted)}

/* ---------- Promo ---------- */
.promo{position:relative;overflow:hidden;border-radius:28px;padding:80px 70px;border:1px solid var(--line-strong);
  background:radial-gradient(circle at 80% 50%,#5a2a0e 0%,#2a150a 32%,#141110 65%);transition:box-shadow .6s,transform .6s var(--ease)}
.promo:hover{box-shadow:0 0 70px -10px rgba(226,98,42,.35)}
.promo-content{position:relative;z-index:2;max-width:520px}
.promo h2{font-family:var(--serif);font-weight:400;font-size:clamp(32px,4vw,50px);line-height:1.08;margin:14px 0 16px}
.promo p{color:rgba(243,235,224,.78);margin-bottom:30px}
.promo-leaves{position:absolute;inset:0;z-index:1;pointer-events:none}
.leaf{position:absolute;top:-60px;opacity:0;animation:fall linear infinite}
.leaf svg{width:100%;height:100%;fill:currentColor;stroke:none}
@keyframes fall{0%{transform:translate(0,0) rotate(0);opacity:0}10%{opacity:.9}90%{opacity:.9}100%{transform:translate(-120px,520px) rotate(420deg);opacity:0}}
.promo-script{position:absolute;right:9%;top:50%;translate:0 -50%;z-index:2;font-family:var(--serif);font-style:italic;font-size:46px;line-height:1.05;transform:rotate(-6deg);text-shadow:0 4px 20px rgba(0,0,0,.6)}
.promo-script span{display:block}
.promo-script span:last-of-type{padding-left:30px;color:var(--copper-2)}
.promo-script svg{width:170px;margin:10px 0 0 30px;stroke:var(--copper-2);stroke-width:3}
.promo-script path{stroke-dasharray:170;stroke-dashoffset:170;transition:stroke-dashoffset 1.6s var(--ease) .6s}
.promo.in .promo-script path{stroke-dashoffset:0}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:80px}
.contact-grid>div>p{color:var(--muted);margin-top:18px}
.contact-list{list-style:none;margin-top:36px;display:grid;gap:18px}
.contact-list li{display:flex;align-items:center;gap:14px;font-size:15px;transition:color .3s,transform .4s var(--ease)}
.contact-list li:hover{color:var(--copper-2);transform:translateX(6px)}
.contact-list svg{width:40px;height:40px;padding:10px;border-radius:50%;border:1px solid var(--line-strong);color:var(--copper-2)}
.form{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding:40px;border-radius:24px;background:var(--surface);border:1px solid var(--line)}
.field{position:relative}
.field.full{grid-column:1/-1}
.field input,.field select,.field textarea{width:100%;padding:24px 18px 10px;background:var(--bg);border:1px solid var(--line);border-radius:12px;color:var(--cream);font:inherit;font-size:15px;outline:none;transition:border-color .3s,box-shadow .3s;resize:vertical;appearance:none}
.field label{position:absolute;left:18px;top:17px;font-size:15px;color:var(--muted);pointer-events:none;transition:all .3s var(--ease)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--copper);box-shadow:0 0 0 4px rgba(200,134,74,.12)}
.field input:focus+label,.field input:not(:placeholder-shown)+label,
.field textarea:focus+label,.field textarea:not(:placeholder-shown)+label,
.field select:focus+label,.field select:valid+label{top:7px;font-size:11px;letter-spacing:1px;color:var(--copper-2)}
.form .btn{grid-column:1/-1;margin-top:6px}
.form-note{grid-column:1/-1;font-size:14px;color:var(--copper-2);min-height:20px;text-align:center}

/* ---------- Footer ---------- */
.footer{border-top:1px solid var(--line);padding-top:60px;background:var(--bg-2)}
.footer-top{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;padding-bottom:40px}
.footer-links{display:flex;gap:30px;font-size:14px;color:var(--muted)}
.footer-links a:hover{color:var(--copper-2)}
.footer-tag{font-family:var(--serif);font-style:italic;color:var(--copper-2)}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding:24px 0 34px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(40px);transition:opacity 1s var(--ease),transform 1s var(--ease);transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .features,.stove-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);row-gap:50px}
  .steps-line{display:none}
  .promo-script{display:none}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:50px}
}
@media (max-width:820px){
  .section{padding:90px 0}
  .menu{position:fixed;inset:0;background:rgba(15,14,13,.97);backdrop-filter:blur(20px);flex-direction:column;align-items:center;justify-content:center;gap:30px;opacity:0;visibility:hidden;transition:all .5s var(--ease)}
  .menu a{font-family:var(--serif);font-size:30px}
  .menu.open{opacity:1;visibility:visible}
  .burger{display:flex;position:relative;z-index:2}
  .phone span{display:none}
  .phone{padding:12px}
  .section-head{flex-direction:column;align-items:flex-start}
  .promo{padding:56px 30px}
}
@media (max-width:560px){
  .features,.stove-grid,.steps,.form{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr 1fr}
  .stat strong{font-size:32px}
  .form{padding:26px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal,.load{opacity:1;transform:none}
}