/* ============================================================
   RIANE PRIVATE LIMITED — shared stylesheet
   ============================================================ */
:root{
  --black:#000000; --red:#A31106; --red-d:#7d0d05; --yellow:#FDE367;
  --grey:#808080; --grey-l:#B1B1B1; --white:#FFFFFF;
  --ink:#111113; --panel:#141416; --line:rgba(255,255,255,.12);
  --wa:#25D366;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Montserrat',sans-serif;color:var(--ink);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-weight:600;line-height:1.15;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--red)}
.eyebrow.y{color:var(--yellow)}
section{scroll-margin-top:80px}

/* buttons */
.btn{display:inline-block;padding:14px 28px;border-radius:2px;font-weight:600;font-size:14px;letter-spacing:.03em;transition:.2s;cursor:pointer;border:1.5px solid transparent}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{background:var(--red-d)}
.btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:#fff;color:var(--ink)}
.btn-dark{border-color:var(--ink);color:var(--ink)}
.btn-dark:hover{background:var(--ink);color:#fff}

/* header */
header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(10,10,11,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:.3s}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:13px}
.brand img.mark{height:40px;width:auto}
.brand img.word{height:19px;width:auto}
.menu{display:flex;gap:34px;align-items:center}
.menu a{color:rgba(255,255,255,.86);font-size:14px;font-weight:500;letter-spacing:.02em;transition:.2s}
.menu a:hover,.menu a.active{color:#fff}
.menu a.active{border-bottom:2px solid var(--red);padding-bottom:3px}
.nav-cta{display:flex;align-items:center;gap:18px}
.hamb{display:none;background:none;border:0;color:#fff;font-size:26px;cursor:pointer}

/* home hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;color:#fff;background:#000}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,8,9,.92) 0%,rgba(8,8,9,.72) 42%,rgba(8,8,9,.32) 100%)}
.hero .wrap{position:relative;z-index:2;padding-top:90px;padding-bottom:60px}
.hero h1{font-size:clamp(2.4rem,5.4vw,4.3rem);font-weight:700;max-width:16ch;margin:18px 0 22px}
.hero h1 .accent{color:var(--red)}
.hero p.lead{font-size:clamp(1.05rem,1.7vw,1.35rem);font-weight:300;max-width:52ch;color:rgba(255,255,255,.9)}
.hero-cta{display:flex;gap:16px;margin-top:38px;flex-wrap:wrap}
.hero-scroll{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:2;color:rgba(255,255,255,.6);font-size:12px;letter-spacing:.2em;text-transform:uppercase}

/* page hero (subpages) */
.phero{position:relative;min-height:56vh;display:flex;align-items:flex-end;color:#fff;background:#000}
.phero-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.phero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,8,9,.55) 0%,rgba(8,8,9,.85) 100%)}
.phero .wrap{position:relative;z-index:2;padding:130px 24px 56px}
.phero h1{font-size:clamp(2rem,4.6vw,3.4rem);font-weight:700;max-width:20ch;margin-top:14px}
.phero p{font-size:1.1rem;font-weight:300;max-width:56ch;margin-top:14px;color:rgba(255,255,255,.9)}
.crumb{font-size:13px;color:rgba(255,255,255,.6);letter-spacing:.02em}
.crumb a:hover{color:#fff}

/* statement */
.statement{background:var(--ink);color:#fff;padding:96px 0;text-align:center}
.statement h2{font-size:clamp(1.6rem,3vw,2.5rem);font-weight:600;max-width:24ch;margin:20px auto 0;line-height:1.25}
.statement h2 b{color:var(--yellow);font-weight:600}
.stats{display:flex;justify-content:center;gap:64px;margin-top:56px;flex-wrap:wrap}
.stat b{display:block;font-size:2.4rem;font-weight:700;color:#fff}
.stat span{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--grey-l)}

/* generic section head */
.sec{padding:110px 0}
.sec.alt{background:#f5f4f2}
.sec.dark{background:#0e0e10;color:#fff}
.sec-head{max-width:680px}
.sec-head h2{font-size:clamp(1.8rem,3.4vw,2.7rem);margin:16px 0 14px}
.sec-head p{color:#555;font-size:1.05rem}
.sec.dark .sec-head h2{color:#fff}
.sec.dark .sec-head p{color:#aaa}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* service pillars */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:56px}
.pillar{border:1px solid #e9e9ec;border-radius:4px;padding:38px 32px;transition:.25s;position:relative;overflow:hidden;background:#fff}
.pillar::before{content:"";position:absolute;left:0;top:0;height:3px;width:100%;background:var(--red);transform:scaleX(0);transform-origin:left;transition:.3s}
.pillar:hover{box-shadow:0 24px 50px -24px rgba(0,0,0,.22);transform:translateY(-4px)}
.pillar:hover::before{transform:scaleX(1)}
.pillar .num{font-size:13px;font-weight:700;color:var(--red);letter-spacing:.1em}
.pillar h3{font-size:1.35rem;margin:14px 0 12px}
.pillar p{color:#555;font-size:.96rem}
.pillar ul{list-style:none;margin-top:18px}
.pillar li{font-size:.9rem;color:#333;padding:7px 0 7px 22px;position:relative;border-top:1px solid #f0f0f2}
.pillar li::before{content:"";position:absolute;left:0;top:15px;width:7px;height:7px;background:var(--red);border-radius:50%}
.pillar .plink{display:inline-block;margin-top:20px;font-size:.85rem;font-weight:600;color:var(--red)}

/* split feature rows (services detail / about) */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-top:70px}
.split:first-of-type{margin-top:56px}
.split.rev .split-media{order:2}
.split-media img{width:100%;border-radius:6px;aspect-ratio:4/3;object-fit:cover}
/* diagram media (no crop, light backdrop) */
.split-media.diagram{background:#faf9f7;border:1px solid #eceae6;border-radius:8px;padding:20px}
.split-media.diagram img{aspect-ratio:auto;object-fit:contain;border-radius:0}
/* branded graphic tile (icon / logo on geometric panel) */
.gfx-tile{position:relative;border-radius:8px;overflow:hidden;aspect-ratio:4/3;background-size:cover;background-position:center;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;color:#fff;text-align:center;padding:24px}
.gfx-tile img.ic{width:34%;max-width:120px;aspect-ratio:auto;border-radius:0}
.gfx-tile img.logo{width:52%;max-width:230px;aspect-ratio:auto;border-radius:0}
.gfx-tile .lbl{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--yellow);font-weight:600}
.split-body .eyebrow{margin-bottom:12px;display:block}
.split-body h3{font-size:clamp(1.4rem,2.6vw,2rem);margin-bottom:14px}
.split-body p{color:#555;margin-bottom:16px}
.split-body ul{list-style:none}
.split-body li{padding:8px 0 8px 24px;position:relative;font-size:.95rem;color:#222;border-top:1px solid #ececef}
.split-body li::before{content:"";position:absolute;left:0;top:16px;width:7px;height:7px;background:var(--red);border-radius:50%}

/* project grid */
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:56px}
.pcard{position:relative;border-radius:4px;overflow:hidden;aspect-ratio:4/3;background:#1a1a1d;cursor:pointer;display:block}
.pcard img{width:100%;height:100%;object-fit:cover;transition:.6s}
.pcard:hover img{transform:scale(1.07)}
.pcard .ov{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 40%,rgba(0,0,0,.85) 100%);display:flex;flex-direction:column;justify-content:flex-end;padding:24px}
.pcard .tag{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--yellow);font-weight:600}
.pcard h4{font-size:1.25rem;margin-top:6px;color:#fff}
.pcard .loc{font-size:.85rem;color:rgba(255,255,255,.72);font-weight:300}
.more{text-align:center;margin-top:48px}

/* clients */
.clients{padding:92px 0;background:#fff;text-align:center}
.clients h2{font-size:clamp(1.4rem,2.6vw,2rem);margin-bottom:8px}
.clients p{color:#666;margin-bottom:44px}
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:28px;align-items:center}
.logo-wall img{width:100%;height:64px;object-fit:contain;filter:grayscale(1);opacity:.62;transition:.3s;mix-blend-mode:multiply}
.logo-wall img:hover{filter:grayscale(0);opacity:1}

/* process */
.pline{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:56px}
.step .n{font-size:2.6rem;font-weight:800;color:var(--red);line-height:1;opacity:.9}
.step h4{font-size:1.15rem;margin:12px 0 8px}
.step p{font-size:.92rem;color:#555}

/* values grid (about) */
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:52px}
.value{border:1px solid #e9e9ec;border-radius:5px;padding:28px}
.value b{display:block;font-size:1.1rem;color:var(--ink);margin-bottom:6px}
.value b span{color:var(--red)}
.value p{font-size:.92rem;color:#666}

/* case study */
.cs-meta{background:var(--ink);color:#fff;padding:34px 0}
.cs-meta .wrap{display:flex;flex-wrap:wrap;gap:44px}
.cs-meta .m span{display:block;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--grey-l);margin-bottom:5px}
.cs-meta .m b{font-size:1.05rem;font-weight:600}
.cs-body{padding:90px 0}
.cs-lead{max-width:760px}
.cs-lead h2{font-size:clamp(1.6rem,3vw,2.3rem);margin-bottom:18px}
.cs-lead p{color:#444;font-size:1.06rem;margin-bottom:18px}
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:56px}
.gallery img{width:100%;border-radius:5px;aspect-ratio:3/2;object-fit:cover}
.gallery img.wide{grid-column:1/-1;aspect-ratio:16/6}
.cs-next{background:#0e0e10;color:#fff;text-align:center;padding:80px 0}
.cs-next a.btn{margin-top:24px}

/* contact form */
.contact-grid{display:grid;grid-template-columns:0.9fr 1.1fr;gap:64px;align-items:start}
.contact-intro h2{font-size:clamp(1.8rem,3.2vw,2.5rem);margin:14px 0 14px}
.contact-intro p{color:#555;font-size:1.05rem;max-width:38ch}
.contact-info{list-style:none;margin-top:34px}
.contact-info li{padding:16px 0;border-top:1px solid #ececef;font-size:.98rem;color:#222}
.contact-info li span{display:block;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--red);font-weight:600;margin-bottom:5px}
.contact-info a:hover{color:var(--red)}
.enquiry{background:#f7f6f4;border:1px solid #eceae6;border-radius:6px;padding:34px}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px;display:flex;flex-direction:column}
.field label{font-size:12px;font-weight:600;letter-spacing:.04em;color:#333;margin-bottom:7px}
.field input,.field select,.field textarea{font-family:inherit;font-size:.95rem;padding:12px 14px;border:1px solid #d9d7d3;border-radius:3px;background:#fff;color:#111;transition:.2s;width:100%}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(163,17,6,.12)}
.field textarea{resize:vertical}
.form-note{margin-top:14px;font-size:.9rem;text-align:center;min-height:20px}
.form-note.ok{color:#1a7a34}
.map-embed{margin-top:22px;border-radius:6px;overflow:hidden;border:1px solid #e5e3df}
.map-embed iframe{width:100%;height:260px;border:0;display:block}

/* CTA band */
.cta-band{position:relative;padding:130px 0;color:#fff;text-align:center;background:#000}
.cta-band .bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.28}
.cta-band .wrap{position:relative;z-index:2}
.cta-band h2{font-size:clamp(1.9rem,4vw,3rem);font-weight:700;max-width:20ch;margin:0 auto 18px}
.cta-band p{color:rgba(255,255,255,.85);max-width:46ch;margin:0 auto 34px;font-weight:300;font-size:1.1rem}

/* footer */
footer{background:#0a0a0b;color:#fff;padding:72px 0 34px}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid var(--line)}
footer .word{height:20px;margin-bottom:20px}
.fgrid p{color:var(--grey-l);font-size:.92rem;font-weight:300;max-width:34ch}
footer h5{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:#fff;margin-bottom:18px}
footer ul{list-style:none}
footer li{margin-bottom:11px}
footer li a{color:var(--grey-l);font-size:.92rem;transition:.2s}
footer li a:hover{color:#fff}
.fbot{display:flex;justify-content:space-between;align-items:center;padding-top:26px;flex-wrap:wrap;gap:12px}
.fbot span{color:var(--grey);font-size:.82rem}

/* whatsapp widget */
.wa-fab{position:fixed;right:24px;bottom:24px;z-index:200;width:60px;height:60px;border-radius:50%;background:var(--wa);border:none;cursor:pointer;box-shadow:0 10px 30px -6px rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;transition:.25s}
.wa-fab:hover{transform:scale(1.06)}
.wa-fab svg{width:32px;height:32px;fill:#fff}
.wa-pop{position:fixed;right:24px;bottom:96px;z-index:200;width:330px;max-width:calc(100vw - 32px);background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 24px 60px -12px rgba(0,0,0,.4);transform:translateY(16px) scale(.96);opacity:0;pointer-events:none;transition:.22s}
.wa-pop.show{transform:translateY(0) scale(1);opacity:1;pointer-events:auto}
.wa-head{background:#075E54;color:#fff;padding:18px 20px;display:flex;align-items:center;gap:12px}
.wa-head .wa-ava{width:42px;height:42px;border-radius:50%;background:#0a0a0b;display:flex;align-items:center;justify-content:center}
.wa-head .wa-ava img{width:26px;height:auto}
.wa-head b{font-size:.95rem;display:block}
.wa-head small{font-size:.78rem;color:rgba(255,255,255,.75)}
.wa-body{padding:22px 20px;background:#ECE5DD}
.wa-msg{background:#fff;border-radius:0 10px 10px 10px;padding:12px 14px;font-size:.9rem;color:#222;box-shadow:0 1px 2px rgba(0,0,0,.1);max-width:90%}
.wa-msg small{display:block;color:#888;font-size:.7rem;text-align:right;margin-top:4px}
.wa-cta{display:flex;align-items:center;justify-content:center;gap:8px;margin:18px 20px 20px;padding:13px;background:var(--wa);color:#fff;border-radius:26px;font-weight:600;font-size:.92rem;transition:.2s}
.wa-cta:hover{background:#1eb955}
.wa-close{margin-left:auto;background:none;border:none;color:#fff;font-size:20px;cursor:pointer;opacity:.8}
.wa-close:hover{opacity:1}

/* responsive */
@media(max-width:900px){
  .menu{display:none}
  .hamb{display:block}
  .contact-grid,.split{grid-template-columns:1fr;gap:40px}
  .split.rev .split-media{order:0}
  .pillars,.pgrid,.values{grid-template-columns:1fr 1fr}
  .pline{grid-template-columns:1fr 1fr}
  .logo-wall{grid-template-columns:repeat(4,1fr)}
  .fgrid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .pillars,.pgrid,.pline,.logo-wall,.fgrid,.frow,.values,.gallery{grid-template-columns:1fr}
  .gallery img.wide{aspect-ratio:3/2}
  .stats{gap:36px}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .enquiry{padding:24px}
  .cs-meta .wrap{gap:26px}
}