/* ─────────────────────────────────────────────────────────────────────────────
   TideMerge — consulting site design system (dark navy/blue theme, matches the
   legacy app palette). Used by the marketing pages (index, services,
   solutions/*, industries, about, contact). The legacy app pages (signin,
   dashboard, account, pricing, privacy, tos) still use styles.css — do not
   load both on one page.
   ──────────────────────────────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  /* surfaces — same family as styles.css */
  --bg:#050A14;
  --bg-soft:#0B1628;           /* alternating sections */
  --bg-deep:#030810;           /* darkest band (final CTA, footer) */
  --card:#0F1E38;
  --border:rgba(255,255,255,.08);
  --border-strong:rgba(255,255,255,.16);

  /* ink */
  --ink:#F0F6FF;
  --ink-2:rgba(240,246,255,.64);   /* secondary text */
  --ink-3:rgba(240,246,255,.42);   /* captions/meta */
  --ink-inverse:#F0F6FF;

  /* accents: blue primary, cyan companion */
  --blue:#3B82F6;
  --blue-deep:#2563EB;
  --cyan:#06B6D4;
  --accent-soft:rgba(59,130,246,.12);   /* tinted fills behind icons */
  --grad:linear-gradient(135deg,#2563EB 0%,#06B6D4 100%);
  --grad-text:linear-gradient(135deg,#60A5FA 0%,#22D3EE 100%);
  --green:#10B981;
  --red:#F87171;

  /* type scale — Inter only, tighter and cleaner */
  --fs-display:clamp(2.5rem,1.7rem + 3.8vw,3.9rem);
  --fs-h1:clamp(2.1rem,1.55rem + 2.4vw,3rem);
  --fs-h2:clamp(1.7rem,1.4rem + 1.4vw,2.2rem);
  --fs-h3:clamp(1.25rem,1.15rem + .6vw,1.55rem);
  --fs-h4:1.13rem;
  --fs-lead:clamp(1.05rem,1rem + .3vw,1.2rem);
  --fs-body:1rem;
  --fs-small:.9rem;
  --fs-caption:.8125rem;
  --fs-eyebrow:.72rem;

  --radius-lg:18px;            /* big panels */
  --radius:14px;               /* cards */
  --radius-sm:8px;             /* buttons, inputs, chips */
  --shadow-sm:0 2px 8px rgba(0,0,0,.3);
  --shadow-md:0 8px 28px rgba(0,0,0,.4);
  --shadow-lg:0 16px 56px rgba(0,0,0,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
  --section-y:clamp(64px,5vw + 36px,110px);
  --nav-h:72px;
}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--ink);
  font-size:var(--fs-body);line-height:1.65;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;background:none}
::selection{background:rgba(37,99,235,.4)}

/* ── typography ── */
h1,h2,h3,h4,.display{font-family:'Inter',system-ui,sans-serif;font-weight:700;line-height:1.12;letter-spacing:-.025em;color:var(--ink)}
.display{font-size:var(--fs-display);letter-spacing:-.03em;font-weight:800}
h1{font-size:var(--fs-h1)}
h2{font-size:var(--fs-h2)}
h3{font-size:var(--fs-h3);line-height:1.25}
h4{font-size:var(--fs-h4);line-height:1.35;font-weight:600}
.lead{font-size:var(--fs-lead);line-height:1.65;color:var(--ink-2);font-weight:400}
.small{font-size:var(--fs-small)}
.muted{color:var(--ink-2)}
.faint{color:var(--ink-3)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:var(--fs-eyebrow);font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:16px;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--grad);border-radius:2px}
.grad-text{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ── layout ── */
.wrap{max-width:1140px;margin:0 auto;padding:0 24px}
.wrap-narrow{max-width:820px;margin:0 auto;padding:0 24px}
section{padding:var(--section-y) 0}
.section-soft{background:var(--bg-soft)}
.section-deep{background:var(--bg-deep);color:var(--ink-inverse);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-deep h2,.section-deep h3{color:#fff}
.section-deep .muted,.section-deep .lead{color:var(--ink-2)}
.section-head{max-width:680px;margin-bottom:clamp(32px,3.5vw,52px)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.center .eyebrow{justify-content:center}
.section-head.center .eyebrow::before{display:none}
.section-head p{margin-top:14px}

/* ── nav ── */
nav#nav{
  position:fixed;inset:0 0 auto 0;z-index:90;height:var(--nav-h);
  background:rgba(5,10,20,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:border-color .25s var(--ease),background .25s var(--ease);
}
nav#nav.scrolled{border-bottom-color:var(--border);background:rgba(5,10,20,.92)}
.nav-inner{max-width:1140px;margin:0 auto;height:100%;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.nav-logo{font-weight:800;font-size:1.25rem;letter-spacing:-.02em;color:#fff}
.nav-logo .grad{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;align-items:center;gap:4px;list-style:none}
.nav-links>li>a{
  display:block;padding:8px 13px;border-radius:8px;font-size:.92rem;font-weight:500;color:var(--ink-2);
  transition:color .18s,background .18s;
}
.nav-links>li>a:hover,.nav-links>li>a.active{color:var(--ink);background:rgba(255,255,255,.06)}
.nav-signin{font-size:.88rem;font-weight:600;color:var(--ink-2);padding:8px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);transition:all .18s}
.nav-signin:hover{color:var(--ink);border-color:var(--border-strong)}
.hamburger{display:none;flex-direction:column;gap:5px;padding:10px}
.hamburger span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:all .25s var(--ease)}
.mobile-menu{
  display:none;position:fixed;top:var(--nav-h);left:0;right:0;z-index:89;background:var(--bg-soft);
  border-bottom:1px solid var(--border);box-shadow:var(--shadow-md);padding:16px 24px 24px;
}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:13px 6px;font-weight:500;color:var(--ink-2);border-bottom:1px solid var(--border)}
.mobile-menu .btn{width:100%;margin-top:14px;justify-content:center;border-bottom:none}
main{padding-top:var(--nav-h)}

/* ── buttons ── */
.btn{
  display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:.96rem;
  padding:14px 26px;border-radius:var(--radius-sm);transition:all .2s var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 4px 18px rgba(37,99,235,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 26px rgba(37,99,235,.5)}
.btn-secondary{background:transparent;color:var(--ink);border:1px solid var(--border-strong)}
.btn-secondary:hover{border-color:var(--blue);color:#fff;transform:translateY(-2px)}
.btn-ghost{color:var(--blue);padding:14px 10px;font-weight:600}
.btn-ghost:hover{color:var(--cyan)}
.btn .arrow{transition:transform .2s var(--ease)}
.btn:hover .arrow{transform:translateX(3px)}
.section-deep .btn-secondary{background:transparent;color:#fff;border-color:var(--border-strong)}
.section-deep .btn-secondary:hover{border-color:var(--blue)}

/* ── hero ── */
.hero{position:relative;padding:clamp(64px,7vw,116px) 0 clamp(52px,5vw,88px);overflow:hidden}
.hero-blob{
  position:absolute;pointer-events:none;filter:blur(100px);opacity:.4;border-radius:50%;
}
.hero-blob.b1{width:560px;height:560px;background:rgba(37,99,235,.22);top:-200px;right:-120px}
.hero-blob.b2{width:420px;height:420px;background:rgba(6,182,212,.14);bottom:-220px;left:-140px}
.hero-inner{position:relative;max-width:820px}
.hero .display{margin-bottom:22px}
.hero .lead{max-width:620px;margin-bottom:34px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-proof{display:flex;gap:40px;flex-wrap:wrap;margin-top:52px;padding-top:30px;border-top:1px solid var(--border)}
.hero-proof .stat b{display:block;font-size:1.5rem;font-weight:700;letter-spacing:-.02em;color:#fff}
.hero-proof .stat span{font-size:var(--fs-caption);color:var(--ink-3)}

/* ── cards & grids ── */
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;transition:transform .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:rgba(59,130,246,.4)}
.card h3,.card h4{margin-bottom:9px;color:#fff}
.card p{color:var(--ink-2);font-size:var(--fs-small);line-height:1.65}
.icon-tile{
  width:44px;height:44px;border-radius:11px;background:var(--accent-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:#60A5FA;
}
.icon-tile svg{width:22px;height:22px}
.card-link{display:inline-flex;align-items:center;gap:7px;margin-top:16px;font-weight:600;font-size:var(--fs-small);color:#60A5FA}
.card-link .arrow{transition:transform .2s var(--ease)}
.card:hover .card-link .arrow{transform:translateX(3px)}

/* solution card variant */
.sol-card{display:flex;flex-direction:column}
.sol-card .tm{font-size:.62em;vertical-align:.6em;font-weight:500;color:var(--ink-3)}
.sol-card p{flex:1}

/* ── process rail ── */
.process{display:grid;grid-template-columns:repeat(7,1fr);gap:0;counter-reset:step}
.process .step{position:relative;padding:0 12px;text-align:center}
.process .step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  display:flex;align-items:center;justify-content:center;width:48px;height:48px;margin:0 auto 14px;
  border-radius:50%;background:var(--card);border:1px solid var(--border-strong);
  font-weight:700;font-size:.88rem;color:#60A5FA;
  position:relative;z-index:1;
}
.process .step::after{
  content:"";position:absolute;top:24px;left:calc(50% + 28px);width:calc(100% - 56px);height:1px;
  background:var(--border-strong);
}
.process .step:last-child::after{display:none}
.process .step b{display:block;font-size:.95rem;margin-bottom:5px;color:#fff}
.process .step span{font-size:var(--fs-caption);color:var(--ink-3);line-height:1.5;display:block}

/* ── industry chips ── */
.chip-grid{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  padding:11px 19px;border:1px solid var(--border);border-radius:100px;background:var(--card);
  font-weight:500;font-size:var(--fs-small);color:var(--ink-2);transition:all .2s var(--ease);
}
a.chip:hover{border-color:var(--blue);color:#fff;transform:translateY(-2px)}

/* ── testimonials / case outcomes ── */
.quote-card{display:flex;flex-direction:column;gap:16px}
.quote-card .qmark{font-size:2.5rem;line-height:1;color:var(--blue);opacity:.5;font-weight:700}
.quote-card blockquote{font-size:1rem;line-height:1.7;color:var(--ink);flex:1}
.quote-card .who b{display:block;font-size:var(--fs-small);font-weight:600;color:#fff}
.quote-card .who span{font-size:var(--fs-caption);color:var(--ink-3)}
.outcome{font-weight:800;font-size:1.5rem;letter-spacing:-.01em}
.outcome-label{font-size:var(--fs-caption);color:var(--ink-3)}

/* ── forms ── */
.form-panel{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:clamp(26px,3.5vw,42px);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid .full{grid-column:1/-1}
.field label{display:block;font-size:var(--fs-caption);font-weight:600;margin-bottom:7px;color:var(--ink-2)}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);
  font-family:inherit;font-size:var(--fs-small);color:var(--ink);background:rgba(255,255,255,.04);
  transition:border-color .18s,box-shadow .18s;
}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(59,130,246,.18);
}
.field textarea{resize:vertical;min-height:104px}
.form-note{font-size:var(--fs-caption);color:var(--ink-3);margin-top:14px}
.form-status{display:none;margin-top:16px;padding:13px 15px;border-radius:var(--radius-sm);font-size:var(--fs-small);font-weight:500}
.form-status.ok{display:block;background:rgba(16,185,129,.12);color:#34D399;border:1px solid rgba(16,185,129,.3)}
.form-status.err{display:block;background:rgba(248,113,113,.1);color:#F87171;border:1px solid rgba(248,113,113,.3)}

/* ── page hero (inner pages) ── */
.page-hero{padding:clamp(48px,5vw,84px) 0 clamp(36px,3.5vw,64px);position:relative;overflow:hidden}
.page-hero .display{max-width:800px;margin-bottom:18px}
.page-hero .lead{max-width:640px}
.breadcrumb{font-size:var(--fs-caption);color:var(--ink-3);margin-bottom:24px;display:flex;gap:8px;align-items:center}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--blue)}

/* ── solution page building blocks ── */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,4.5vw,64px);align-items:start}
.check-list{list-style:none;display:flex;flex-direction:column;gap:13px}
.check-list li{display:flex;gap:12px;align-items:flex-start;color:var(--ink-2);font-size:var(--fs-small);line-height:1.6}
.check-list .ck{
  flex:none;width:22px;height:22px;margin-top:1px;border-radius:7px;background:var(--accent-soft);
  display:flex;align-items:center;justify-content:center;color:#60A5FA;
}
.check-list .ck svg{width:12px;height:12px}
.check-list .ck.x{background:rgba(248,113,113,.1);color:#F87171}
.check-list li b{color:var(--ink)}
.pain-panel{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius-lg);padding:clamp(24px,2.8vw,36px)}
.pain-panel ul{margin-top:16px}

/* FAQ accordion */
.faq{border-top:1px solid var(--border)}
.faq details{border-bottom:1px solid var(--border)}
.faq summary{
  cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:20px 4px;font-weight:600;font-size:1rem;color:#fff;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .plus{flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--border-strong);position:relative;transition:transform .25s var(--ease)}
.faq summary .plus::before,.faq summary .plus::after{content:"";position:absolute;background:var(--ink-2);top:50%;left:50%}
.faq summary .plus::before{width:10px;height:1.5px;transform:translate(-50%,-50%)}
.faq summary .plus::after{width:1.5px;height:10px;transform:translate(-50%,-50%)}
.faq details[open] summary .plus{transform:rotate(45deg);border-color:var(--blue)}
.faq details p{padding:0 40px 20px 4px;color:var(--ink-2);font-size:var(--fs-small);line-height:1.7;max-width:740px}

/* ── final CTA band ── */
.cta-band{position:relative;overflow:hidden}
.cta-band .hero-blob.b1{opacity:.3}
.cta-band .wrap{position:relative}

/* ── footer ── */
footer{background:var(--bg-deep);color:var(--ink-2);padding:64px 0 32px;font-size:var(--fs-small);border-top:1px solid var(--border)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;margin-bottom:48px}
.footer-grid h5{color:#fff;font-size:.92rem;margin-bottom:15px;font-weight:600}
.footer-grid ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.footer-grid a:hover{color:#fff}
.footer-logo{font-weight:800;font-size:1.2rem;color:#fff;display:inline-block;margin-bottom:13px}
.footer-logo .grad{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.footer-bottom{border-top:1px solid var(--border);padding-top:26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:var(--fs-caption);color:var(--ink-3)}
.footer-bottom a:hover{color:#fff}

/* ── scroll-reveal animation ── */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal-d1{transition-delay:.07s}.reveal-d2{transition-delay:.14s}.reveal-d3{transition-delay:.21s}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ── calendly modal (shared with legacy) ── */
.cal-overlay{position:fixed;inset:0;z-index:200;background:rgba(3,8,16,.75);display:none;align-items:center;justify-content:center;padding:20px}
.cal-overlay.open{display:flex}
.cal-box{position:relative;width:min(1000px,100%);height:min(760px,92vh);background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.cal-box iframe{width:100%;height:100%;border:0}
.cal-close{position:absolute;top:10px;right:10px;z-index:2;width:36px;height:36px;border-radius:50%;background:#E9EEF6;font-size:15px;color:#3D4C63}
.cal-close:hover{background:#D8E0EC}

/* ── responsive ── */
@media (max-width:1020px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(4,1fr);row-gap:36px}
  .process .step:nth-child(4)::after{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
}
@media (max-width:600px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .process{grid-template-columns:repeat(2,1fr)}
  .process .step:nth-child(2n)::after{display:none}
  .hero-proof{gap:24px}
  .btn{width:100%;justify-content:center}
  .hero-ctas .btn{width:100%}
}