/* ============================================================================
   INFI — Restaurant Growth Platform · core design system
   Bold, blue-forward, Apple/Square-caliber. Dual light + dark.
   Type: Clash Display (display) + General Sans (body), self-hosted.
   ========================================================================== */

/* ---------- TOKENS ---------- */
:root{
  /* brand blue — matches the real INFI kiosk hardware (cobalt + white) */
  --blue-50:#eef3ff; --blue-100:#dbe6ff; --blue-200:#b8ccff; --blue-300:#8aa9ff;
  --blue-400:#5c83ff; --blue-500:#2f5dff;   /* primary */
  --blue-600:#1f43e6; --blue-700:#1733b4; --blue-800:#142a8c; --blue-900:#0f1f5e;
  --blue:var(--blue-500);
  /* warm accent — "at your service" energy, echoes the kiosk-hero */
  --amber-400:#ffb24d; --amber:#ff9d2e; --amber-600:#f47f12;
  /* ink / paper */
  --ink:#0a0e1a; --ink-2:#141a2e;
  --paper:#ffffff; --paper-2:#f4f7fd; --paper-3:#e9effb;

  /* semantic — LIGHT */
  --bg:var(--paper);
  --bg-soft:var(--paper-2);
  --surface:#ffffff;
  --text:#0a0e1a;
  --text-2:#41496a;
  --text-3:#6b7494;
  --line:rgba(16,32,94,.12);
  --line-2:rgba(16,32,94,.07);
  --brand:var(--blue-500);
  --brand-text:var(--blue-600);          /* brand color used as small text (AA on paper) */
  --on-brand:#ffffff;
  --ring:rgba(47,93,255,.35);
  --shadow-sm:0 1px 2px rgba(13,24,72,.06), 0 2px 8px rgba(13,24,72,.05);
  --shadow:0 10px 30px -12px rgba(13,24,72,.22);
  --shadow-lg:0 40px 90px -30px rgba(13,24,72,.34);
  --glow:0 0 0 1px rgba(47,93,255,.12), 0 30px 80px -30px rgba(47,93,255,.45);

  /* type */
  --display:'Clash Display','General Sans',system-ui,sans-serif;
  --body:'General Sans',system-ui,-apple-system,sans-serif;
  --fw-disp:700; --fw-disp-2:600;

  /* shape + space */
  --r-sm:12px; --r:18px; --r-lg:26px; --r-xl:34px; --r-pill:999px;
  --maxw:1240px; --gut:clamp(20px,5vw,72px);

  /* motion */
  --ease:cubic-bezier(.16,1,.3,1);
  --ease-io:cubic-bezier(.65,0,.35,1);
  --dur:.6s;

  color-scheme:light;
}

@media (prefers-color-scheme: dark){
  :root{
    --bg:#06080f;
    --bg-soft:#0a0e1a;
    --surface:#101627;
    --text:#f3f6ff;
    --text-2:#aeb9da;
    --text-3:#7e88ad;
    --line:rgba(255,255,255,.12);
    --line-2:rgba(255,255,255,.06);
    --brand:#5c83ff;
    --brand-text:#9db4ff;
    --ring:rgba(120,150,255,.45);
    --shadow-sm:0 1px 2px rgba(0,0,0,.4);
    --shadow:0 14px 40px -14px rgba(0,0,0,.6);
    --shadow-lg:0 50px 110px -36px rgba(0,0,0,.75);
    --glow:0 0 0 1px rgba(120,150,255,.18), 0 36px 90px -30px rgba(60,100,255,.5);
    color-scheme:dark;
  }
}

/* ---------- RESET ---------- */
*,*::before,*::after{box-sizing:border-box}
*{margin:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
body{
  font-family:var(--body);
  background:var(--bg); color:var(--text);
  line-height:1.6; font-weight:400;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  overflow-x:clip;
}
img,video,svg{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:var(--blue-500);color:#fff}

/* ---------- TYPE SCALE (editorial, confident) ---------- */
.h-display{font-family:var(--display);font-weight:var(--fw-disp);line-height:.96;letter-spacing:-.03em;
  font-size:clamp(2.9rem,7.4vw,6.6rem)}
.h1{font-family:var(--display);font-weight:var(--fw-disp);line-height:1;letter-spacing:-.028em;
  font-size:clamp(2.4rem,5.2vw,4.4rem)}
.h2{font-family:var(--display);font-weight:var(--fw-disp);line-height:1.02;letter-spacing:-.025em;
  font-size:clamp(2rem,4vw,3.4rem)}
.h3{font-family:var(--display);font-weight:var(--fw-disp-2);line-height:1.08;letter-spacing:-.02em;
  font-size:clamp(1.4rem,2.4vw,2.1rem)}
.lead{font-size:clamp(1.12rem,1.7vw,1.45rem);line-height:1.5;color:var(--text-2);font-weight:450;max-width:60ch}
.eyebrow{font-family:var(--body);font-weight:600;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-text);display:inline-flex;align-items:center;gap:.6em}
.eyebrow::before{content:"";width:1.6em;height:1px;background:currentColor;opacity:.6}
.muted{color:var(--text-3)}
.amber-ink{color:var(--amber-600)}
@media (prefers-color-scheme: dark){.amber-ink{color:var(--amber-400)}}

/* gradient/clipped display accent word */
.grad{background:linear-gradient(108deg,var(--blue-500),var(--blue-300) 60%,var(--amber) 130%);
  -webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- LAYOUT ---------- */
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut)}
.section{padding-block:clamp(72px,10vw,150px)}
.section--tight{padding-block:clamp(48px,6vw,90px)}

/* ---------- BUTTONS ---------- */
.btn{display:inline-flex;align-items:center;gap:.55em;font-family:var(--body);font-weight:600;
  font-size:1rem;line-height:1;padding:1.05em 1.7em;border-radius:var(--r-pill);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s,color .25s;
  white-space:nowrap;will-change:transform}
.btn:active{transform:translateY(1px) scale(.99)}
.btn--primary{background:var(--blue-500);color:#fff;box-shadow:0 12px 30px -10px var(--ring)}
.btn--primary:hover{background:var(--blue-600);transform:translateY(-2px);box-shadow:0 20px 44px -14px var(--ring)}
.btn--amber{background:var(--amber);color:#26190a;box-shadow:0 12px 30px -10px rgba(255,140,0,.5)}
.btn--amber:hover{background:var(--amber-600);transform:translateY(-2px)}
.btn--ghost{background:color-mix(in srgb,var(--text) 6%,transparent);color:var(--text);border:1px solid var(--line)}
.btn--ghost:hover{background:color-mix(in srgb,var(--text) 11%,transparent);transform:translateY(-2px)}
.btn--lg{font-size:1.06rem;padding:1.15em 2em}
.btn .ico{width:1.05em;height:1.05em;transition:transform .25s var(--ease)}
.btn:hover .ico{transform:translateX(3px)}

/* ---------- NAV (clean, Apple-style; gains glass on scroll) ---------- */
.nav{position:fixed;inset:0 0 auto;z-index:90;transition:background .35s,backdrop-filter .35s,border-color .35s,box-shadow .35s;
  border-bottom:1px solid transparent}
.nav.is-stuck{background:color-mix(in srgb,var(--bg) 72%,transparent);
  -webkit-backdrop-filter:saturate(180%) blur(18px);backdrop-filter:saturate(180%) blur(18px);
  border-bottom-color:var(--line-2);box-shadow:0 1px 0 var(--line-2)}
.nav__in{display:flex;align-items:center;gap:30px;height:70px}
.nav__logo{font-family:var(--display);font-weight:700;font-size:1.45rem;letter-spacing:.02em}
.nav__links{display:flex;gap:6px;margin-left:14px}
.nav__links a, .nav__has > button{display:inline-flex;align-items:center;gap:.3em;padding:.55em .8em;border-radius:10px;
  font-weight:500;font-size:.97rem;color:var(--text-2);transition:color .2s,background .2s}
.nav__links a:hover,.nav__has:hover > button{color:var(--text);background:color-mix(in srgb,var(--text) 6%,transparent)}
.nav__has{position:relative}
.nav__drop{position:absolute;top:calc(100% + 8px);left:0;min-width:250px;padding:8px;border-radius:18px;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translateY(8px);transition:.2s var(--ease)}
.nav__has:hover .nav__drop,.nav__has:focus-within .nav__drop{opacity:1;visibility:visible;transform:none}
.nav__drop a{display:block;padding:.6em .8em;border-radius:11px;color:var(--text-2);font-size:.94rem}
.nav__drop a:hover{background:var(--bg-soft);color:var(--brand-text)}
.nav__cta{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav__login{font-weight:500;color:var(--text-2);padding:.55em .7em}
.nav__login:hover{color:var(--text)}
@media (max-width:900px){.nav__links,.nav__login{display:none}}

/* ---------- FOOTER ---------- */
.foot{background:var(--ink);color:#c7cfe6;padding-block:clamp(56px,7vw,96px) 34px;
  border-top:1px solid rgba(255,255,255,.08)}
@media (prefers-color-scheme: dark){.foot{background:#04060c}}
.foot__grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:40px}
.foot__brand .nav__logo{color:#fff;font-size:1.6rem}
.foot__tag{margin-top:14px;max-width:34ch;color:#8c97b8;font-size:.95rem}
.foot h4{color:#fff;font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:14px;font-weight:600}
.foot a{color:#aab4d2;font-size:.94rem;display:block;padding:5px 0;transition:color .2s}
.foot a:hover{color:#fff}
.foot__bar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;
  margin-top:46px;padding-top:26px;border-top:1px solid rgba(255,255,255,.1);color:#7e88ad;font-size:.88rem}
@media (max-width:760px){.foot__grid{grid-template-columns:1fr 1fr}.foot__brand{grid-column:1/-1}}

/* ---------- MOTION UTILITIES (reveal-once, JS-gated, reduced-motion safe) ---------- */
@media (prefers-reduced-motion: no-preference){
  html.js [data-reveal]{opacity:0;transform:translateY(30px);
    transition:opacity .8s var(--ease),transform .8s var(--ease)}
  html.js [data-reveal].in{opacity:1;transform:none}
  html.js [data-reveal="scale"]{transform:translateY(24px) scale(.96)}
  html.js [data-reveal] [data-stagger]{opacity:0;transform:translateY(20px);
    transition:opacity .7s var(--ease),transform .7s var(--ease)}
  html.js [data-reveal].in [data-stagger]{opacity:1;transform:none}
}
.focus-ring:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:8px}

/* ============================================================================
   LIQUID GLASS LAYER — Apple/Square caliber, light-primary, INFI blue.
   Honest label: web glassmorphism approximation (backdrop-filter), not Apple's
   platform Liquid Glass. Frosted panels refract over an ambient blue field.
   ========================================================================== */
:root{
  --glass:rgba(255,255,255,.62);
  --glass-strong:rgba(255,255,255,.78);
  --glass-brd:rgba(255,255,255,.85);
  --glass-brd-soft:rgba(255,255,255,.55);
  --glass-hi:inset 0 1px 0 rgba(255,255,255,.9), inset 0 0 0 1px rgba(255,255,255,.2);
  --glass-blur:saturate(180%) blur(20px);
  /* ambient field (light): soft blue mesh on near-white paper */
  --amb-base:#eef3fc;
  --amb-1:rgba(47,93,255,.20);   /* blue bloom */
  --amb-2:rgba(120,160,255,.16); /* lighter blue */
  --amb-3:rgba(255,170,80,.08);  /* warm amber echo */
  --amb-4:rgba(90,130,255,.12);
}
@media (prefers-color-scheme: dark){
  :root{
    --glass:rgba(20,28,52,.55);
    --glass-strong:rgba(26,36,66,.74);
    --glass-brd:rgba(255,255,255,.14);
    --glass-brd-soft:rgba(255,255,255,.08);
    --glass-hi:inset 0 1px 0 rgba(255,255,255,.16), inset 0 0 0 1px rgba(255,255,255,.04);
    --glass-blur:saturate(160%) blur(22px);
    --amb-base:#05070f;
    --amb-1:rgba(50,90,255,.30);
    --amb-2:rgba(30,60,180,.22);
    --amb-3:rgba(255,160,70,.07);
    --amb-4:rgba(70,110,255,.18);
  }
}
/* fixed ambient field behind everything (cheap static gradients) */
html{background:var(--amb-base)}
.amb{position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(48vmax 42vmax at 8% -4%, var(--amb-1), transparent 60%),
    radial-gradient(42vmax 40vmax at 96% 8%, var(--amb-2), transparent 62%),
    radial-gradient(52vmax 46vmax at 82% 96%, var(--amb-4), transparent 60%),
    radial-gradient(38vmax 34vmax at 14% 98%, var(--amb-3), transparent 58%),
    var(--amb-base)}

/* frosted glass panel */
.glass{
  background:var(--glass);
  -webkit-backdrop-filter:var(--glass-blur); backdrop-filter:var(--glass-blur);
  border:1px solid var(--glass-brd-soft);
  box-shadow:var(--glass-hi), var(--shadow);
}
.glass--strong{background:var(--glass-strong);border-color:var(--glass-brd)}

/* nav becomes a floating glass capsule */
.nav__in{margin-top:0}
.nav.is-stuck{background:var(--glass-strong);border-bottom-color:var(--glass-brd-soft)}

/* card sheen on hover (the signature refraction move) */
.sheen{position:relative;overflow:hidden}
.sheen::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:0;
  background:linear-gradient(115deg,transparent 32%,rgba(255,255,255,.5) 48%,transparent 64%);
  transform:translateX(-30%);transition:opacity .5s,transform .8s var(--ease)}
.sheen:hover::before{opacity:1;transform:translateX(30%)}
@media (prefers-color-scheme: dark){.sheen::before{background:linear-gradient(115deg,transparent 32%,rgba(255,255,255,.14) 48%,transparent 64%)}}
@media (prefers-reduced-transparency: reduce){
  :root{--glass:#fff;--glass-strong:#fff;--glass-blur:none}
  @media (prefers-color-scheme: dark){:root{--glass:#121a2e;--glass-strong:#16203a}}
}