/* ====== TOKENS ====== */
:root{
  --bg:#03070D;
  --bg-2:#050B14;
  --panel:#07111D;
  --panel-2:#0A1626;
  --text:#F5F8FC;
  --muted:#93A5B8;
  --accent:#18CFFF;
  --accent-dim:rgba(24,207,255,.14);
  --line:rgba(245,248,252,.08);
  --line-strong:rgba(245,248,252,.16);
  --glass:rgba(7,17,29,.72);

  --font-fa:"Vazirmatn",Tahoma,sans-serif;
  --font-lt:"Space Grotesk",Vazirmatn,sans-serif;

  --fs-hero:clamp(3.4rem,11vw,9rem);
  --fs-sec:clamp(2.1rem,5.4vw,4.2rem);
  --fs-h3:clamp(1.15rem,2vw,1.45rem);
  --fs-body:clamp(0.95rem,1.1vw,1.06rem);
  --fs-small:0.85rem;

  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px;
  --sp-5:48px; --sp-6:64px; --sp-7:96px;
  --sec-pad:clamp(80px,12vw,130px);

  --r-lg:22px;
  --r-md:14px;
  --r-pill:999px;

  --ease:cubic-bezier(.22,.61,.2,1);
  --nav-h:72px;
}

/* ====== RESET ====== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;overflow-x:hidden}
body{
  background:var(--bg);color:var(--text);
  font-family:var(--font-fa);font-size:var(--fs-body);
  line-height:1.9;overflow-x:clip;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul{list-style:none}
::selection{background:var(--accent);color:#02131B}

:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;border-radius:4px;
}

.container{width:min(1180px,100%);margin-inline:auto;padding-inline:clamp(20px,4.5vw,44px)}

/* ====== LOADER ====== */
.loader{
  position:fixed;inset:0;z-index:100;
  background:var(--bg);
  display:grid;place-items:center;
  transition:opacity .6s var(--ease),visibility .6s;
}
.loader.done{opacity:0;visibility:hidden}
.loader-mark{font-family:var(--font-lt);font-weight:700;letter-spacing:.35em;font-size:.85rem;color:var(--muted);text-transform:uppercase}
.loader-bar{width:120px;height:2px;background:var(--line);margin-top:var(--sp-2);overflow:hidden;border-radius:2px}
.loader-bar span{display:block;height:100%;width:40%;background:var(--accent);animation:load 1s var(--ease) infinite}
@keyframes load{0%{transform:translateX(160%)}100%{transform:translateX(-160%)}}

/* ====== FILM GRAIN ====== */
.grain{
  position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
}

/* ====== TOP NAV ====== */
.topnav{
  position:fixed;top:0;inset-inline:0;z-index:60;height:var(--nav-h);
  display:flex;align-items:center;
  background:transparent;
  transition:background .4s var(--ease),border-color .4s var(--ease),height .4s var(--ease);
  border-bottom:1px solid transparent;
}
.topnav.scrolled{
  background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);height:60px;
}
.topnav .container{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3)}
.brand{font-family:var(--font-lt);font-weight:700;font-size:1.15rem;letter-spacing:.14em;text-transform:uppercase}
.brand em{color:var(--accent);font-style:normal}
.nav-links{display:flex;align-items:center;gap:clamp(14px,2vw,26px)}
.nav-links a{
  font-size:.88rem;color:var(--muted);font-weight:500;
  position:relative;padding:6px 2px;transition:color .3s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;bottom:0;inset-inline:0;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:center;
  transition:transform .3s var(--ease);
}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}

.burger{
  display:none;width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:var(--r-md);
}
.burger span{position:relative;display:block;width:20px;height:2px;background:var(--text);transition:background .2s}
.burger span::before,.burger span::after{
  content:"";position:absolute;inset-inline:0;height:2px;background:var(--text);
  transition:transform .3s var(--ease),top .3s var(--ease);
}
.burger span::before{top:-6px}.burger span::after{top:6px}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.burger[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

.mobile-menu{
  position:fixed;inset:0;z-index:55;
  background:rgba(3,7,13,.96);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  display:flex;flex-direction:column;justify-content:center;
  padding:var(--nav-h) var(--sp-4) var(--sp-5);
  opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s;
}
.mobile-menu.open{opacity:1;visibility:visible}
.mobile-menu a{
  font-size:clamp(1.5rem,6vw,2rem);font-weight:700;
  padding:var(--sp-2) 0;border-bottom:1px solid var(--line);
  display:flex;align-items:baseline;gap:var(--sp-2);
  transform:translateY(14px);opacity:0;
  transition:transform .4s var(--ease),opacity .4s var(--ease),color .3s;
}
.mobile-menu.open a{transform:none;opacity:1}
.mobile-menu a:hover{color:var(--accent)}
.mobile-menu a i{font-family:var(--font-lt);font-style:normal;font-size:.8rem;color:var(--accent);letter-spacing:.1em}

/* ====== CINEMA RAIL (signature) ====== */
.rail{
  position:fixed;top:50%;left:22px;transform:translateY(-50%);z-index:50;
  display:flex;flex-direction:column;gap:14px;align-items:flex-start;
}
.rail-item{display:flex;align-items:center;gap:10px;opacity:.45;transition:opacity .3s var(--ease)}
.rail-item:hover,.rail-item.active{opacity:1}
.rail-dot{
  width:9px;height:9px;border-radius:50%;
  background:transparent;border:1px solid var(--muted);
  transition:background .3s,border-color .3s,box-shadow .3s;
}
.rail-item.active .rail-dot{background:var(--accent);border-color:var(--accent);box-shadow:0 0 12px rgba(24,207,255,.5)}
.rail-label{
  font-family:var(--font-lt);font-size:.68rem;letter-spacing:.18em;color:var(--muted);
  max-width:0;overflow:hidden;white-space:nowrap;transition:max-width .35s var(--ease);
}
.rail-item:hover .rail-label,.rail-item.active .rail-label{max-width:120px}
.rail-item.active .rail-label{color:var(--accent)}

/* ====== SECTION BASE ====== */
.section{padding-block:var(--sec-pad);position:relative}
.section+.section{border-top:1px solid var(--line)}
.sec-head{margin-bottom:clamp(40px,6vw,64px)}
.sec-tag{
  font-family:var(--font-lt);font-size:.78rem;letter-spacing:.3em;
  color:var(--accent);text-transform:uppercase;
  display:flex;align-items:center;gap:12px;margin-bottom:var(--sp-3);
}
.sec-tag::after{content:"";height:1px;flex:0 0 56px;background:var(--accent);opacity:.5}
.sec-title{font-size:var(--fs-sec);font-weight:900;line-height:1.25;letter-spacing:-0.02em}
.sec-lead{color:var(--muted);max-width:60ch;margin-top:var(--sp-3);font-weight:300}

/* ====== REVEAL ====== */
.rv{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rv.in-view{opacity:1;transform:none}
.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}.rv-d4{transition-delay:.32s}

/* ====== HERO ====== */
.hero{
  position:relative;min-height:100svh;
  display:flex;align-items:flex-end;
  overflow:hidden;
}
.hero-media{position:absolute;inset:-8% 0;z-index:0}
.hero-media img{
  width:100%;height:100%;object-fit:cover;
  filter:brightness(.5) saturate(.85);
  will-change:transform;
}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(to top,var(--bg) 4%,rgba(3,7,13,.55) 34%,rgba(3,7,13,.25) 62%,rgba(3,7,13,.55) 100%),
    linear-gradient(to left,rgba(3,7,13,.6),transparent 45%);
}
.hero-inner{position:relative;z-index:2;width:100%;padding-block:clamp(120px,18vh,180px) clamp(90px,14vh,140px)}
.hero-scene{
  font-family:var(--font-lt);font-size:.8rem;letter-spacing:.35em;color:var(--accent);
  text-transform:uppercase;display:flex;align-items:center;gap:14px;margin-bottom:var(--sp-3);
}
.hero-scene::before{content:"";width:44px;height:1px;background:var(--accent)}
.hero h1{
  font-size:var(--fs-hero);font-weight:900;line-height:1.02;
  letter-spacing:-0.02em;
  font-family:var(--font-lt);
  margin-bottom:var(--sp-3);
}
.hero h1 span{display:block;font-family:var(--font-fa);font-size:clamp(1rem,2.6vw,1.5rem);font-weight:300;color:var(--muted);letter-spacing:.06em;margin-top:var(--sp-2)}
.hero-tagline{
  font-size:clamp(1.05rem,2.4vw,1.45rem);font-weight:500;color:var(--text);
  letter-spacing:.02em;margin-bottom:var(--sp-4);
}
.hero-tagline b{color:var(--accent);font-weight:500}
.hero p.lead{max-width:56ch;color:var(--muted);font-weight:300;margin-bottom:var(--sp-5)}
.hero-cta{display:flex;flex-wrap:wrap;gap:var(--sp-2)}

.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 30px;border-radius:var(--r-pill);
  font-size:.95rem;font-weight:500;
  transition:transform .3s var(--ease),background .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease);
}
.btn-primary{background:var(--accent);color:#02131B}
.btn-primary:hover{transform:translateY(-2px);background:#3EDDFF}
.btn-ghost{border:1px solid var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}

.scroll-hint{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:3;
  display:flex;flex-direction:column;align-items:center;gap:8px;
  color:var(--muted);font-size:.72rem;letter-spacing:.25em;font-family:var(--font-lt);
}
.scroll-hint::after{
  content:"";width:1px;height:38px;
  background:linear-gradient(var(--accent),transparent);
  animation:drip 1.8s var(--ease) infinite;
}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* hero entrance */
.hero .rise{opacity:0;transform:translateY(30px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
body.loaded .hero .rise{opacity:1;transform:none}
body.loaded .rise-d2{transition-delay:.12s}
body.loaded .rise-d3{transition-delay:.24s}
body.loaded .rise-d4{transition-delay:.36s}
body.loaded .rise-d5{transition-delay:.5s}

/* ====== ABOUT ====== */
.about-grid{
  display:grid;grid-template-columns:minmax(280px,5fr) minmax(300px,7fr);
  gap:clamp(32px,6vw,72px);align-items:center;
}
.about-figure{position:relative}
.about-figure .frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line-strong);
  aspect-ratio:4/5;
}
.about-figure img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease)}
.about-figure:hover img{transform:scale(1.045)}
.about-figure .frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(3,7,13,.45),transparent 40%);
}
.about-badge{
  position:absolute;bottom:-18px;inset-inline-start:24px;z-index:2;
  background:var(--panel-2);border:1px solid var(--line-strong);
  border-radius:var(--r-md);padding:12px 18px;
  display:flex;align-items:center;gap:10px;
}
.about-badge i{font-family:var(--font-lt);font-style:normal;color:var(--accent);font-size:.75rem;letter-spacing:.2em}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;margin-top:var(--sp-4)}
.fact{background:var(--panel);padding:18px 20px}
.fact b{display:block;font-family:var(--font-lt);font-size:1.25rem;font-weight:700;color:var(--text)}
.fact span{font-size:.8rem;color:var(--muted)}
.about-text p+p{margin-top:var(--sp-3)}
.about-text .sec-lead{margin-top:0}

/* ====== PERSONALITY ====== */
.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--sp-3)}
.card{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:clamp(24px,3vw,34px);
  transition:transform .4s var(--ease),border-color .4s var(--ease),background .4s var(--ease);
}
.card:hover{transform:translateY(-6px);border-color:var(--accent);background:var(--panel-2)}
.card-icon{
  width:48px;height:48px;border-radius:var(--r-md);
  display:grid;place-items:center;margin-bottom:var(--sp-3);
  background:var(--accent-dim);color:var(--accent);
}
.card-icon svg{width:22px;height:22px}
.card h3{font-size:var(--fs-h3);font-weight:700;margin-bottom:6px}
.card p{color:var(--muted);font-size:.92rem;font-weight:300}
.card-num{
  font-family:var(--font-lt);font-size:.72rem;letter-spacing:.2em;
  color:var(--muted);opacity:.6;display:block;margin-bottom:var(--sp-2);
}

/* ====== INTERESTS ====== */
.interests-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--sp-3)}
.tile{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:3/4;
  display:flex;align-items:flex-end;
  transition:border-color .4s var(--ease),transform .4s var(--ease);
}
.tile:hover{transform:translateY(-6px);border-color:var(--accent)}
.tile img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease);filter:saturate(.9)}
.tile:hover img{transform:scale(1.06)}
.tile::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(3,7,13,.88) 8%,rgba(3,7,13,.25) 48%,transparent 75%)}
.tile-body{position:relative;z-index:2;padding:var(--sp-3)}
.tile-icon{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:rgba(7,17,29,.75);border:1px solid var(--line-strong);color:var(--accent);margin-bottom:12px;backdrop-filter:blur(6px)}
.tile-icon svg{width:19px;height:19px}
.tile h3{font-size:1.2rem;font-weight:700;margin-bottom:4px}
.tile p{color:var(--muted);font-size:.86rem;font-weight:300}

/* ====== PROJECTS ====== */
.projects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--sp-4)}
.project{
  border-radius:var(--r-lg);overflow:hidden;background:var(--panel);
  border:1px solid var(--line);
  transition:transform .4s var(--ease),border-color .4s var(--ease);
  display:flex;flex-direction:column;
}
.project:hover{transform:translateY(-6px);border-color:var(--line-strong)}
.project-media{aspect-ratio:16/10;overflow:hidden;position:relative}
.project-media img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease);filter:saturate(.9)}
.project:hover .project-media img{transform:scale(1.06)}
.project-cat{
  position:absolute;top:14px;inset-inline-start:14px;z-index:2;
  font-size:.72rem;letter-spacing:.12em;font-weight:500;
  background:rgba(3,7,13,.7);border:1px solid var(--line-strong);
  color:var(--accent);border-radius:var(--r-pill);padding:6px 14px;
  backdrop-filter:blur(6px);
}
.project-body{padding:clamp(20px,3vw,28px);display:flex;flex-direction:column;gap:10px;flex:1}
.project-body h3{font-size:var(--fs-h3);font-weight:700}
.project-body p{color:var(--muted);font-size:.92rem;font-weight:300;flex:1}
.project-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.88rem;font-weight:500;color:var(--accent);width:fit-content;
}
.project-link svg{width:15px;height:15px;transition:transform .3s var(--ease)}
.project-link:hover svg{transform:translateX(-4px)}

/* ====== GALLERY ====== */
.gallery-grid{
  display:grid;gap:var(--sp-2);
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  grid-auto-flow:dense;
}
.g-item{
  position:relative;overflow:hidden;border-radius:var(--r-md);
  border:1px solid var(--line);cursor:pointer;padding:0;
  transition:border-color .3s var(--ease);
}
.g-item:hover{border-color:var(--accent)}
.g-item.tall{grid-row:span 2}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease);filter:saturate(.9)}
.g-item:hover img{transform:scale(1.05)}
.g-item::after{
  content:"";position:absolute;inset:0;
  background:rgba(3,7,13,.35);opacity:0;transition:opacity .35s var(--ease);
}
.g-item:hover::after{opacity:1}
.g-item figure{position:absolute;inset:0;margin:0}
.g-item figcaption{
  position:absolute;bottom:12px;inset-inline:14px;z-index:2;
  font-size:.8rem;color:var(--text);opacity:0;transform:translateY(8px);
  transition:opacity .35s var(--ease),transform .35s var(--ease);
  text-shadow:0 1px 8px rgba(0,0,0,.8);
}
.g-item:hover figcaption{opacity:1;transform:none}
.g-item.tall figure{aspect-ratio:unset;height:100%}
.g-item figure{aspect-ratio:1/1}

.lightbox{
  position:fixed;inset:0;z-index:90;
  background:rgba(2,5,9,.94);
  display:grid;place-items:center;padding:clamp(16px,4vw,48px);
  opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s;
}
.lightbox.open{opacity:1;visibility:visible}
.lightbox img{
  max-width:min(1100px,100%);max-height:82vh;
  object-fit:contain;border-radius:var(--r-md);
  border:1px solid var(--line-strong);
  transform:scale(.97);transition:transform .35s var(--ease);
}
.lightbox.open img{transform:none}
.lb-caption{
  position:absolute;bottom:clamp(14px,3vw,26px);left:50%;transform:translateX(-50%);
  color:var(--muted);font-size:.85rem;white-space:nowrap;
}
.lb-btn{
  position:absolute;width:48px;height:48px;border-radius:50%;
  border:1px solid var(--line-strong);background:rgba(7,17,29,.6);
  display:grid;place-items:center;color:var(--text);
  transition:border-color .3s,color .3s,transform .3s var(--ease);
  backdrop-filter:blur(8px);
}
.lb-btn:hover{border-color:var(--accent);color:var(--accent)}
.lb-btn svg{width:20px;height:20px}
.lb-close{top:clamp(14px,3vw,28px);left:clamp(14px,3vw,28px)}
.lb-prev{top:50%;left:clamp(10px,3vw,34px);transform:translateY(-50%)}
.lb-next{top:50%;right:clamp(10px,3vw,34px);transform:translateY(-50%)}

/* ====== STORY ====== */
.timeline{position:relative;max-width:760px;margin-inline:auto;padding-inline-start:clamp(28px,5vw,48px)}
.timeline::before{
  content:"";position:absolute;top:6px;bottom:6px;inset-inline-start:6px;
  width:1px;background:linear-gradient(var(--accent) 0%,var(--line-strong) 80%,transparent);
}
.tl-item{position:relative;padding-bottom:clamp(40px,6vw,64px)}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;top:8px;inset-inline-start:calc(-1 * clamp(28px,5vw,48px) + 2px);
  width:9px;height:9px;border-radius:50%;
  background:var(--bg);border:2px solid var(--accent);
  box-shadow:0 0 10px rgba(24,207,255,.45);
}
.tl-year{
  font-family:var(--font-lt);font-size:clamp(1.6rem,4vw,2.4rem);font-weight:700;
  color:var(--text);letter-spacing:.02em;line-height:1.2;
  direction:ltr;text-align:right;
}
.tl-item h3{font-size:var(--fs-h3);font-weight:700;margin:6px 0 8px}
.tl-item p{color:var(--muted);font-weight:300;max-width:56ch}
.tl-img{margin-top:var(--sp-3);border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/8;max-width:520px}
.tl-img img{width:100%;height:100%;object-fit:cover}

/* ====== CONTACT ====== */
.contact-grid{display:grid;grid-template-columns:minmax(280px,5fr) minmax(320px,7fr);gap:clamp(36px,6vw,72px);align-items:start}
.c-list{display:flex;flex-direction:column;gap:var(--sp-3)}
.c-item{
  display:flex;align-items:center;gap:var(--sp-3);
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-md);padding:18px 20px;
  transition:border-color .3s var(--ease),transform .3s var(--ease);
}
.c-item:hover{border-color:var(--accent);transform:translateX(-4px)}
.c-item .card-icon{width:42px;height:42px;margin:0;flex:none}
.c-item b{display:block;font-size:.78rem;font-weight:500;color:var(--muted);letter-spacing:.06em}
.c-item span{font-family:var(--font-lt);font-size:1rem;direction:ltr;unicode-bidi:embed}
.socials{display:flex;gap:10px;margin-top:var(--sp-4)}
.socials a{
  width:46px;height:46px;border-radius:50%;
  border:1px solid var(--line-strong);display:grid;place-items:center;color:var(--muted);
  transition:color .3s,border-color .3s,transform .3s var(--ease),background .3s;
}
.socials a:hover{color:#02131B;background:var(--accent);border-color:var(--accent);transform:translateY(-3px)}
.socials svg{width:19px;height:19px}

.form{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(24px,4vw,40px)}
.field{margin-bottom:var(--sp-3)}
.field label{display:block;font-size:.85rem;font-weight:500;margin-bottom:8px;color:var(--muted)}
.field input,.field textarea{
  width:100%;background:var(--bg-2);border:1px solid var(--line-strong);
  border-radius:var(--r-md);padding:13px 16px;
  color:var(--text);font:inherit;font-size:.95rem;
  transition:border-color .3s,box-shadow .3s;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}
.field textarea{min-height:130px;resize:vertical}
.field .err{display:none;font-size:.78rem;color:#FF7A7A;margin-top:6px}
.field.invalid input,.field.invalid textarea{border-color:#FF7A7A}
.field.invalid .err{display:block}
.form .btn{width:100%;justify-content:center}
.form-note{font-size:.78rem;color:var(--muted);margin-top:var(--sp-2);text-align:center}
.form-ok{
  display:none;background:rgba(24,207,255,.1);border:1px solid var(--accent);
  color:var(--text);border-radius:var(--r-md);padding:14px 18px;margin-bottom:var(--sp-3);font-size:.9rem;
}
.form-ok.show{display:block}

/* ====== FOOTER ====== */
.footer{border-top:1px solid var(--line);padding-block:var(--sp-5);background:var(--bg-2)}
.footer .container{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--sp-3)}
.footer .brand{font-size:1rem}
.footer small{color:var(--muted);font-size:.8rem}
.to-top{
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line-strong);display:grid;place-items:center;color:var(--muted);
  transition:color .3s,border-color .3s,transform .3s var(--ease);
}
.to-top:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-3px)}
.to-top svg{width:18px;height:18px}

/* ====== RESPONSIVE ====== */
@media (max-width:1180px){
  .rail{display:none}
}
@media (max-width:900px){
  .nav-links{display:none}
  .burger{display:flex}
  .about-grid,.contact-grid{grid-template-columns:1fr}
  .about-figure{max-width:520px}
  .g-item.tall{grid-row:auto}
  .g-item figure{aspect-ratio:4/3}
}
@media (max-width:520px){
  .facts{grid-template-columns:repeat(2,1fr)}
  .hero-cta .btn{width:100%;justify-content:center}
  .lb-prev{left:8px}.lb-next{right:8px}
  .footer .container{flex-direction:column;text-align:center}
}

/* ====== REDUCED MOTION ====== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  .rv,.hero .rise{opacity:1;transform:none}
  .loader{display:none}
  .scroll-hint::after{animation:none}
}