/* ============================================================
   Bluetinto — AI cost-optimization consultancy
   Shared stylesheet
   ============================================================ */

:root{
  --ink:#0B1A3A;        /* deep navy text */
  --navy:#102652;       /* dark sections */
  --cobalt:#2350C8;     /* primary brand */
  --blue:#3B6FE0;       /* bright accent */
  --blue-700:#1E40AF;
  --blue-soft:#EAF0FD;  /* tint backgrounds */
  --blue-line:#D6E1F6;
  --paper:#FBFCFE;
  --white:#FFFFFF;
  --amber:#F5B43E;      /* sharp warm accent */
  --amber-deep:#E09A1F;
  --line:#DBE3F1;
  --muted:#5B6B86;
  --muted-2:#8492A8;

  --maxw:1180px;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 18px 50px -28px rgba(16,38,82,.45);
  --shadow-sm:0 8px 24px -16px rgba(16,38,82,.4);

  --display:"Bricolage Grotesque", Georgia, serif;
  --body:"Libre Franklin", system-ui, sans-serif;
  --mono:"IBM Plex Mono", ui-monospace, monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.section{padding:96px 0}
.section--tight{padding:64px 0}

/* ---------- Typography ---------- */
h1,h2,h3,h4{font-family:var(--display);line-height:1.05;letter-spacing:-.02em;font-weight:800;color:var(--ink)}
h1{font-size:clamp(2.6rem,6vw,4.6rem)}
h2{font-size:clamp(2rem,4vw,3.1rem)}
h3{font-size:clamp(1.3rem,2.2vw,1.7rem);font-weight:700}
.eyebrow{
  font-family:var(--mono);
  font-size:.78rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cobalt);
  font-weight:600;
  display:inline-flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--amber);display:inline-block}
.lede{font-size:clamp(1.05rem,1.6vw,1.3rem);color:var(--muted);max-width:60ch}
.mono{font-family:var(--mono)}
.stat-num{font-family:var(--mono);font-weight:600;letter-spacing:-.02em;color:var(--cobalt)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-weight:600;font-size:.98rem;
  padding:14px 26px;border-radius:999px;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn-primary{background:var(--cobalt);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{transform:translateY(-2px);background:var(--blue-700);box-shadow:0 16px 32px -18px rgba(35,80,200,.7)}
.btn-ghost{border-color:var(--blue-line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--cobalt);transform:translateY(-2px)}
.btn-amber{background:var(--amber);color:#3a2a00}
.btn-amber:hover{transform:translateY(-2px);background:var(--amber-deep)}
.btn .arrow{transition:transform .18s ease}
.btn:hover .arrow{transform:translateX(3px)}

/* ---------- Nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(251,252,254,.82);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--display);font-weight:800;font-size:1.18rem;letter-spacing:-.02em}
.brand__mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--cobalt),var(--blue));position:relative;flex:none}
.brand__mark::after{content:"";position:absolute;inset:8px;border-radius:3px;border:2px solid rgba(255,255,255,.85);border-right-color:var(--amber);border-bottom-color:var(--amber)}
.nav__links{display:flex;align-items:center;gap:30px}
.nav__links a{font-size:.96rem;font-weight:500;color:var(--ink);position:relative;padding:4px 0}
.nav__links a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--amber);transition:width .2s ease}
.nav__links a:hover::after,.nav__links a[aria-current="page"]::after{width:100%}
.nav__links a[aria-current="page"]{color:var(--cobalt)}
.nav__toggle{display:none;background:none;border:0;cursor:pointer;flex-direction:column;gap:5px;padding:8px}
.nav__toggle span{width:24px;height:2px;background:var(--ink);display:block;transition:.2s}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:88px 0 76px}
.hero::before{ /* graph-paper texture */
  content:"";position:absolute;inset:0;z-index:0;opacity:.5;
  background-image:linear-gradient(var(--blue-line) 1px,transparent 1px),linear-gradient(90deg,var(--blue-line) 1px,transparent 1px);
  background-size:38px 38px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 70% 20%,#000 30%,transparent 75%);
          mask-image:radial-gradient(ellipse 80% 70% at 70% 20%,#000 30%,transparent 75%);
}
.hero__inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}
.hero h1{margin:18px 0 22px}
.hero h1 .hl{position:relative;white-space:nowrap}
.hero h1 .hl::after{content:"";position:absolute;left:-2px;right:-2px;bottom:.06em;height:.28em;background:var(--amber);opacity:.55;z-index:-1;border-radius:2px}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.hero__note{margin-top:22px;font-size:.84rem;color:var(--muted-2);font-family:var(--mono)}

/* cost-range visual */
.costcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.costcard__head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:6px}
.costcard__head h4{font-family:var(--display);font-size:1.05rem}
.costcard__sub{font-size:.82rem;color:var(--muted);margin-bottom:22px}
.bar{position:relative;height:14px;border-radius:999px;background:linear-gradient(90deg,#37C98E 0%,var(--blue) 45%,var(--cobalt) 72%,var(--ink) 100%);margin:30px 0 10px}
.bar__tick{position:absolute;top:-26px;transform:translateX(-50%);font-family:var(--mono);font-size:.72rem;color:var(--ink);white-space:nowrap}
.bar__tick span{display:block;width:1px;height:18px;background:var(--muted-2);margin:4px auto 0}
.bar__dot{position:absolute;top:50%;width:16px;height:16px;border-radius:50%;background:#fff;border:3px solid var(--cobalt);transform:translate(-50%,-50%)}
.costrow{display:flex;justify-content:space-between;font-size:.86rem;color:var(--muted);margin-top:18px;border-top:1px dashed var(--line);padding-top:14px}
.costrow b{color:var(--ink);font-family:var(--mono);font-weight:600}

/* ---------- Logos / trust strip ---------- */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.trust__inner{display:flex;align-items:center;gap:30px;flex-wrap:wrap;justify-content:center;padding:24px 0;font-family:var(--mono);font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-2)}
.trust__inner b{color:var(--cobalt)}

/* ---------- Generic blocks ---------- */
.grid{display:grid;gap:26px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--blue-line)}
.card .num{font-family:var(--mono);font-size:.8rem;color:var(--amber-deep);font-weight:600}
.card h3{margin:14px 0 10px}
.card p{color:var(--muted);font-size:.96rem}
.tag{display:inline-block;font-family:var(--mono);font-size:.72rem;font-weight:600;color:#fff;background:var(--cobalt);padding:5px 11px;border-radius:999px;letter-spacing:.04em}

.section-head{max-width:680px;margin-bottom:50px}
.section-head h2{margin:14px 0 16px}

.split{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}

/* dark band */
.band{background:var(--navy);color:#dCe6fb;position:relative;overflow:hidden}
.band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 85% 15%,rgba(59,111,224,.4),transparent 45%);}
.band .wrap{position:relative;z-index:1}
.band h2,.band h3{color:#fff}
.band .lede{color:#aebfe0}

/* method steps */
.steps{counter-reset:s;display:grid;gap:0}
.step{display:grid;grid-template-columns:auto 1fr auto;gap:22px;align-items:center;padding:24px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.step:last-child{border-bottom:0}
.step__n{counter-increment:s;font-family:var(--mono);font-size:1rem;width:44px;height:44px;border-radius:50%;border:1.5px solid rgba(255,255,255,.35);display:grid;place-items:center;color:#fff}
.step__n::before{content:counter(s,decimal-leading-zero)}
.step h3{font-size:1.15rem;margin-bottom:3px}
.step p{color:#aebfe0;font-size:.92rem}
.step__save{font-family:var(--mono);font-weight:600;color:var(--amber);white-space:nowrap;font-size:.9rem}

/* feature SVG embed */
.figure{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);overflow:hidden}
.figure img{margin:0 auto;border-radius:8px}
.figure__cap{text-align:center;font-family:var(--mono);font-size:.74rem;color:var(--muted-2);margin-top:12px;letter-spacing:.06em}

/* CTA block */
.cta{background:linear-gradient(135deg,var(--cobalt),var(--blue-700));color:#fff;border-radius:26px;padding:64px 48px;text-align:center;position:relative;overflow:hidden}
.cta::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);background-size:32px 32px;opacity:.4}
.cta>*{position:relative;z-index:1}
.cta h2{color:#fff;margin-bottom:14px}
.cta p{color:#d6e2ff;max-width:52ch;margin:0 auto 28px}

/* ---------- Services detail ---------- */
.svc{display:grid;grid-template-columns:auto 1fr;gap:40px;padding:44px 0;border-top:1px solid var(--line);align-items:start}
.svc__idx{font-family:var(--mono);font-size:2.4rem;color:var(--blue-line);font-weight:600;line-height:1}
.svc h3{font-size:1.6rem;margin-bottom:6px}
.svc__meta{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0 16px}
.pill{font-family:var(--mono);font-size:.74rem;color:var(--cobalt);background:var(--blue-soft);border:1px solid var(--blue-line);padding:5px 12px;border-radius:999px}
.svc ul{list-style:none;margin-top:10px;display:grid;gap:8px}
.svc li{position:relative;padding-left:24px;color:var(--muted);font-size:.96rem}
.svc li::before{content:"→";position:absolute;left:0;color:var(--amber-deep);font-family:var(--mono)}

/* ---------- About ---------- */
.lead-portrait{aspect-ratio:4/5;border-radius:var(--radius);background:linear-gradient(160deg,var(--blue-soft),#fff);border:1px solid var(--line);display:grid;place-items:center;color:var(--muted-2);font-family:var(--mono);font-size:.8rem;text-align:center;padding:20px}
.prose p{margin-bottom:18px;color:var(--ink)}
.prose p.big{font-size:1.15rem}

/* ---------- Contact ---------- */
.form{display:grid;gap:18px}
.field{display:grid;gap:7px}
.field label{font-size:.82rem;font-weight:600;font-family:var(--mono);letter-spacing:.04em;color:var(--ink)}
.field input,.field select,.field textarea{
  font-family:var(--body);font-size:1rem;padding:13px 15px;border:1.5px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);transition:border-color .15s,box-shadow .15s;width:100%;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--cobalt);box-shadow:0 0 0 4px rgba(35,80,200,.12)}
.field textarea{min-height:130px;resize:vertical}
.contact-aside{display:grid;gap:22px;align-content:start}
.contact-line{display:flex;gap:14px;align-items:flex-start}
.contact-line .ic{width:40px;height:40px;border-radius:10px;background:var(--blue-soft);display:grid;place-items:center;color:var(--cobalt);flex:none;font-family:var(--mono);font-weight:700}
.contact-line h4{font-family:var(--display);font-size:1rem}
.contact-line p{font-size:.9rem;color:var(--muted)}

/* ---------- Footer ---------- */
.footer{background:var(--ink);color:#9fb0d0;padding:60px 0 34px}
.footer__top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer .brand{color:#fff}
.footer__links{display:flex;gap:46px;flex-wrap:wrap}
.footer__col h5{font-family:var(--mono);font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:#6f83ad;margin-bottom:14px}
.footer__col a{display:block;font-size:.92rem;margin-bottom:9px;color:#c2d0ec}
.footer__col a:hover{color:var(--amber)}
.footer__bottom{padding-top:24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.78rem;color:#6f83ad;font-family:var(--mono)}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hero__inner,.split,.grid-3,.grid-2{grid-template-columns:1fr}
  .hero{padding:54px 0}
  .section{padding:68px 0}
  .nav__links{
    position:fixed;inset:70px 0 auto 0;background:var(--paper);flex-direction:column;gap:0;
    border-bottom:1px solid var(--line);padding:10px 0;transform:translateY(-130%);transition:transform .28s ease;
  }
  .nav__links.open{transform:none}
  .nav__links a{padding:14px 28px;width:100%}
  .nav__toggle{display:flex}
  .svc{grid-template-columns:1fr;gap:14px}
  .cta{padding:46px 24px}
}