/* ===== Yaruki Studio — design system (violet / noir premium) ===== */
:root{
  --bg:#08060E; --bg2:#0E0A1A; --panel:#120C22; --glass:rgba(150,110,255,.06);
  --violet:#8B5CF6; --violet2:#A855F7; --magenta:#D946EF; --cyan:#3BE8E0;
  --g1:#7C3AED; --g2:#C026D3; --g3:#22D3EE;
  --text:#F1EDFA; --mut:#C3BCD6; --faint:#8B84A2;
  --line:rgba(167,139,250,.16); --line2:rgba(236,231,247,.08);
  --fd:"Space Grotesk",system-ui,sans-serif; --fs:"Inter",system-ui,sans-serif;
  --maxw:1180px; --grad:linear-gradient(100deg,var(--g1),var(--g2) 55%,var(--g3));
  --ease:cubic-bezier(.5,.05,.15,1);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:var(--fs);background:var(--bg);color:var(--text);font-weight:300;font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4{font-family:var(--fd);font-weight:500;margin:0;line-height:1.05;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}img{display:block;max-width:100%}
::selection{background:var(--violet);color:#fff}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(20px,5vw,40px)}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{font-family:var(--fs);font-weight:600;font-size:.72rem;letter-spacing:.28em;text-transform:uppercase;color:var(--violet2)}
.btn{display:inline-flex;align-items:center;gap:.6em;font-family:var(--fs);font-weight:600;font-size:.9rem;letter-spacing:.01em;padding:.95em 1.7em;border-radius:100px;border:1px solid transparent;cursor:pointer;transition:.3s var(--ease)}
.btn svg{width:16px;height:16px}
.btn--grad{background:var(--grad);color:#fff;box-shadow:0 12px 40px -12px rgba(192,38,211,.6)}
.btn--grad:hover{transform:translateY(-2px);box-shadow:0 18px 50px -12px rgba(192,38,211,.75)}
.btn--glass{background:var(--glass);border-color:var(--line);color:var(--text);backdrop-filter:blur(10px)}
.btn--glass:hover{border-color:var(--violet);background:rgba(139,92,246,.12)}
/* aurora bg */
.aurora{position:fixed;inset:0;z-index:-2;overflow:hidden;pointer-events:none}
.aurora i{position:absolute;border-radius:50%;filter:blur(80px);opacity:.5}
.aurora .a{width:52vw;height:52vw;left:-12vw;top:-14vw;background:radial-gradient(circle,#7C3AED,transparent 70%)}
.aurora .b{width:44vw;height:44vw;right:-10vw;top:8vh;background:radial-gradient(circle,#C026D3,transparent 70%);opacity:.35}
.aurora .c{width:40vw;height:40vw;left:24vw;bottom:-18vw;background:radial-gradient(circle,#22D3EE,transparent 70%);opacity:.22}
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:
  radial-gradient(120% 80% at 50% -10%,transparent,var(--bg) 75%);}
/* nav */
nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(16px);background:rgba(8,6,14,.6);border-bottom:1px solid var(--line2)}
nav .row{display:flex;align-items:center;justify-content:space-between;height:70px;gap:1rem}
.logo{display:flex;align-items:center;gap:.6rem;font-family:var(--fd);font-weight:700;font-size:1.2rem;letter-spacing:.02em}
.logo .dot{width:12px;height:12px;border-radius:4px;background:var(--grad);box-shadow:0 0 16px rgba(168,85,247,.8)}
nav .links{display:flex;gap:2rem;font-size:.9rem;color:var(--mut)}
nav .links a:hover{color:var(--text)}
@media(max-width:820px){nav .links{display:none}}
nav .btn{padding:.6em 1.3em;font-size:.82rem}
/* sections */
.sec{padding:clamp(4rem,11vh,9rem) 0;position:relative}
.head{max-width:60ch;margin-bottom:clamp(2.4rem,6vh,4rem)}
.head.center{margin-inline:auto;text-align:center}
.head .eyebrow{display:block;margin-bottom:1rem}
.head h2{font-size:clamp(2rem,5.4vw,3.6rem)}
.head p{color:var(--mut);margin-top:1.2rem;font-size:1.06rem}
/* hero */
.hero{padding:clamp(4rem,12vh,9rem) 0 clamp(3rem,8vh,6rem)}
.hero .pill{display:inline-flex;align-items:center;gap:.6rem;background:var(--glass);border:1px solid var(--line);border-radius:100px;padding:.5em 1.1em;font-size:.78rem;color:var(--mut);backdrop-filter:blur(10px);margin-bottom:1.8rem}
.hero .pill b{color:var(--violet2);font-weight:600}
.hero h1{font-size:clamp(2.9rem,8vw,6.2rem);font-weight:600;letter-spacing:-.03em;max-width:16ch}
.hero p{font-size:clamp(1.05rem,2.2vw,1.32rem);color:var(--mut);max-width:52ch;margin:1.6rem 0 2.4rem;font-weight:300}
.hero .cta{display:flex;gap:1rem;flex-wrap:wrap}
.marquee{margin-top:clamp(3rem,7vh,5rem);border-block:1px solid var(--line2);padding:1.3rem 0;overflow:hidden;white-space:nowrap;-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee .t{display:inline-flex;gap:3rem;animation:scrollx 26s linear infinite}
.marquee span{font-family:var(--fd);font-size:1.05rem;color:var(--faint);letter-spacing:.02em}
.marquee span b{color:var(--violet2);font-weight:500}
@keyframes scrollx{to{transform:translateX(-50%)}}
/* services */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:1.1rem}
@media(max-width:940px){.cards{grid-template-columns:1fr 1fr}}@media(max-width:520px){.cards{grid-template-columns:1fr}}
.card-g{background:linear-gradient(180deg,rgba(150,110,255,.08),rgba(150,110,255,.02));border:1px solid var(--line);border-radius:20px;padding:2rem 1.6rem;transition:.35s var(--ease);position:relative;overflow:hidden}
.card-g:hover{transform:translateY(-6px);border-color:rgba(167,139,250,.4)}
.card-g .ic{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:var(--glass);border:1px solid var(--line);margin-bottom:1.2rem}
.card-g .ic svg{width:22px;height:22px;stroke:var(--violet2);fill:none;stroke-width:1.6}
.card-g h3{font-size:1.28rem;margin-bottom:.5rem}
.card-g p{color:var(--mut);font-size:.94rem;margin:0}
/* réalisations */
.works{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
@media(max-width:900px){.works{grid-template-columns:1fr 1fr}}@media(max-width:560px){.works{grid-template-columns:1fr}}
.work-c{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);background:var(--panel);aspect-ratio:16/11}
.work-c img{width:100%;height:100%;object-fit:cover;object-position:top;transition:transform .7s var(--ease)}
.work-c:hover img{transform:scale(1.06)}
.work-c .meta{position:absolute;inset:auto 0 0 0;padding:1.1rem 1.2rem;background:linear-gradient(0deg,rgba(8,6,14,.92),transparent);display:flex;justify-content:space-between;align-items:flex-end;gap:.6rem}
.work-c .meta b{font-family:var(--fd);font-weight:500;font-size:1.05rem}
.work-c .meta span{font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--violet2)}
/* process */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:20px;overflow:hidden}
@media(max-width:820px){.steps{grid-template-columns:1fr 1fr}}@media(max-width:460px){.steps{grid-template-columns:1fr}}
.step{background:var(--bg2);padding:2rem 1.6rem}
.step .n{font-family:var(--fd);font-size:2.2rem;font-weight:700;color:transparent;-webkit-text-stroke:1px var(--violet2);opacity:.55}
.step h3{font-size:1.24rem;margin:.6rem 0 .5rem}
.step p{color:var(--mut);font-size:.92rem;margin:0}
/* mouaid band */
.mouaid{background:linear-gradient(120deg,rgba(124,58,237,.14),rgba(192,38,211,.08));border:1px solid var(--line);border-radius:26px;padding:clamp(2.4rem,6vw,4rem);display:grid;grid-template-columns:1.3fr .7fr;gap:2rem;align-items:center}
@media(max-width:820px){.mouaid{grid-template-columns:1fr}}
.mouaid h2{font-size:clamp(1.9rem,4.6vw,3rem)}
.mouaid p{color:var(--mut);margin:1.1rem 0 0;max-width:46ch}
.mouaid .tag{display:inline-block;font-size:.7rem;letter-spacing:.24em;text-transform:uppercase;color:var(--cyan);margin-bottom:1rem}
/* cta band */
.ctaband{text-align:center}
.ctaband h2{font-size:clamp(2.2rem,6vw,4.4rem);max-width:18ch;margin-inline:auto}
.ctaband p{color:var(--mut);max-width:44ch;margin:1.2rem auto 2.2rem}
/* footer */
footer{border-top:1px solid var(--line2);padding:clamp(3rem,7vh,5rem) 0 2.5rem;background:var(--bg2)}
.fgrid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:2rem}
@media(max-width:820px){.fgrid{grid-template-columns:1fr 1fr}}@media(max-width:460px){.fgrid{grid-template-columns:1fr}}
.fgrid h4{font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--violet2);margin:0 0 1rem;font-family:var(--fs);font-weight:600}
.fgrid a{display:block;color:var(--mut);font-size:.94rem;padding:.28em 0}.fgrid a:hover{color:var(--text)}
.fgrid .about{color:var(--mut);font-size:.94rem;max-width:32ch}
.fbar{margin-top:clamp(2.5rem,6vh,4rem);padding-top:1.4rem;border-top:1px solid var(--line2);display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;color:var(--faint);font-size:.82rem}
/* legal pages */
.legal{padding-top:clamp(3rem,8vh,6rem);max-width:820px}
.legal h1{font-size:clamp(2.2rem,5vw,3.4rem);margin-bottom:.6rem}
.legal .upd{color:var(--faint);font-size:.85rem;margin-bottom:2.5rem}
.legal h2{font-size:1.5rem;margin:2.4rem 0 .8rem;color:var(--text)}
.legal p,.legal li{color:var(--mut)}
.legal a{color:var(--violet2)}
.legal ul{padding-left:1.2rem}
.back{display:inline-flex;align-items:center;gap:.5rem;color:var(--violet2);font-size:.9rem;margin-bottom:2rem}
/* reveal */
.rv{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none}}