/*
  iCheckWeb — ultra-clean friendly-tech landing
  Stack:
  - HTML5 semantic
  - Modern CSS: variables, clamp(), grid/flex, aspect-ratio, color-mix
  - Local component classes compatible with common DaisyUI naming
  - No external CDN assets
*/

/* ------------------------------
   Theme tokens (DaisyUI-style)
   ------------------------------ */
:root{
  --radius-xl: 1.25rem;
  --radius-2xl: 1.75rem;
  --container: min(1120px, 92vw);
  --blur: 18px;

  /* Fluid typography scale */
  --step--1: clamp(0.9rem, 0.86rem + 0.2vw, 1rem);
  --step-0: clamp(1rem, 0.95rem + 0.35vw, 1.15rem);
  --step-1: clamp(1.2rem, 1.05rem + 0.8vw, 1.6rem);
  --step-2: clamp(1.6rem, 1.25rem + 1.4vw, 2.3rem);
  --step-3: clamp(2.1rem, 1.55rem + 2.3vw, 3.1rem);
}

html[data-theme='ichecklight']{
  --p: 221 83% 53%;
  --a: 214 95% 69%;
  --b1: 210 40% 98%;
  --b2: 223 100% 96%;
  --b3: 214 32% 91%;
  --bc: 222 47% 11%;

  --su: 142 76% 36%;
  --wa: 38 92% 50%;
  --er: 0 72% 51%;
  --in: 199 89% 48%;
}

html[data-theme='icheckdark']{
  --p: 217 91% 60%;
  --a: 213 93% 67%;
  --b1: 222 84% 5%;
  --b2: 222 66% 7%;
  --b3: 222 47% 11%;
  --bc: 210 40% 96%;

  --su: 142 71% 45%;
  --wa: 45 96% 59%;
  --er: 0 84% 60%;
  --in: 199 95% 60%;
}

/* ------------------------------
   Base reset / accessibility
   ------------------------------ */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, "Noto Sans", sans-serif;
  font-size: var(--step-0);
  line-height:1.5;
  text-rendering: optimizeLegibility;
  background: hsl(var(--b1));
  color: hsl(var(--bc));
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}

.muted{opacity:.65}
.link{opacity:.85;transition:opacity 160ms ease}
.link:hover{opacity:1}

:focus-visible{outline:2px solid hsl(var(--p));outline-offset:3px;border-radius:12px}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important;scroll-behavior:auto!important}
}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border-width:0
}

.hidden{display:none!important}

/* ------------------------------
   Layout primitives
   ------------------------------ */
.container{width:var(--container);margin-inline:auto}
.section{padding: clamp(2.5rem, 2rem + 2vw, 5rem) 0}
.section--hero{padding-top: clamp(2.5rem, 2rem + 2vw, 4.5rem)}

.header{position:sticky;top:12px;z-index:50}
.topbar{
  margin: 0 auto;
  width: var(--container);
  padding: .9rem 1rem;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:.75rem;
  background: color-mix(in oklab, hsl(var(--b1)) 85%, transparent);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1px solid color-mix(in oklab, hsl(var(--b3)) 65%, transparent);
  border-radius: var(--radius-2xl);
}

.brand{display:flex;align-items:center;gap:.75rem}
.brand__text{line-height:1.1}
.brand__name{font-weight:700;letter-spacing:-0.01em}
.brand__sub,.brand__tag{font-size:.78rem;opacity:.7;margin-top:.15rem}

.nav{display:none;gap:.35rem;align-items:center}
@media (min-width: 840px){.nav{display:flex}}

.actions,.controls{display:flex;gap:.5rem;align-items:center}

/* helper visibility classes used in HTML */
.hide-sm{display:none}
@media (min-width: 520px){.hide-sm{display:inline}}
.hide-md{display:none}
@media (min-width: 840px){.hide-md{display:inline-flex}}

.main{padding-bottom:2rem}

/* Centered layout preference */
.hero{max-width: 1040px;margin-inline:auto}
.hero__left{display:flex;flex-direction:column;align-items:center;text-align:center}
.hero__left .lead{margin-inline:auto}
.hero__checker{width:100%;max-width: 720px}
.chips{justify-content:center}
@media (min-width: 980px){
  .hero{grid-template-columns: 1fr 1fr}
  .hero__left{align-items:flex-start;text-align:left}
  .chips{justify-content:flex-start}
}

/* ------------------------------
   Typography
   ------------------------------ */
.title{font-size:var(--step-3);line-height:1.05;letter-spacing:-0.02em;font-weight:700;margin:0}
.subtitle{font-size:var(--step-2);line-height:1.1;letter-spacing:-0.01em;font-weight:700;margin:0}
.h3{font-size:var(--step-1);line-height:1.2;font-weight:700;margin:0}
.lead{max-width:56ch;opacity:.82;margin:.9rem 0 0 0}
.kicker{font-size:.85rem;opacity:.65}
.microcopy{font-size:.85rem;opacity:.7;margin-top:.75rem}
.accent{color:hsl(var(--p))}

/* ------------------------------
   Cards & effects
   ------------------------------ */
.card-soft{
  border-radius: var(--radius-2xl);
  border: 1px solid color-mix(in oklab, hsl(var(--b3)) 70%, transparent);
  background: color-mix(in oklab, hsl(var(--b1)) 92%, transparent);
  box-shadow: 0 10px 30px rgba(2,6,23,.10);
  transform-style: preserve-3d;
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}
html[data-theme='icheckdark'] .card-soft{box-shadow:0 10px 30px rgba(0,0,0,.45)}
.card-soft:hover{
  box-shadow: 0 16px 50px rgba(2,6,23,.16);
  border-color: color-mix(in oklab, hsl(var(--p)) 30%, hsl(var(--b3)));
}
html[data-theme='icheckdark'] .card-soft:hover{box-shadow:0 16px 50px rgba(0,0,0,.60)}

.grad-border{position:relative}
.grad-border::before{
  content:'';
  position:absolute;
  inset:-1px;
  border-radius:inherit;
  padding:1px;
  background: linear-gradient(135deg,
    color-mix(in oklab, hsl(var(--p)) 70%, transparent),
    color-mix(in oklab, hsl(var(--a)) 60%, transparent)
  );
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events:none;
  opacity:.65;
}

.reveal{opacity:0;transform:translateY(12px);transition:opacity 500ms ease, transform 500ms ease}
.reveal.in-view{opacity:1;transform:translateY(0)}

/* ------------------------------
   Hero layout
   ------------------------------ */
.hero{display:grid;gap:2rem;align-items:start}
@media (min-width: 980px){
  .hero{grid-template-columns: 1.1fr .9fr;gap:3rem}
}
.hero__checker{padding:1rem;margin-top:1.25rem}

.checker{display:flex;flex-direction:column;gap:.75rem}
@media (min-width: 560px){
  .checker{flex-direction:row;align-items:stretch}
  .checker__join{flex:1}
}
.checker__join{width:100%}
.checker__prefix{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 0 .95rem;
  background: hsl(var(--b2));
  border: 1px solid color-mix(in oklab, hsl(var(--b3)) 75%, transparent);
}
.checker__input{min-height: 48px}
.checker__btn{min-height: 48px}
.result{margin-top: 1.25rem}

.chips{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.1rem}

.stack{display:grid;gap:1rem}
.stack__card{padding:1.25rem}
.stack__head{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem}
.stack__title{font-weight:800;margin-top:.15rem}
.stack__list{margin-top:1rem;display:grid;gap:.45rem;font-size:.95rem}
.dotline{display:flex;align-items:center;gap:.55rem}
.dot{width:.5rem;height:.5rem;border-radius:999px;background:hsl(var(--b3))}
.dot--su{background:hsl(var(--su))}
.dot--wa{background:hsl(var(--wa))}
.stack__actions{margin-top:1rem;display:flex;gap:.5rem;flex-wrap:wrap}

/* ------------------------------
   Signals grid (HTML: .cards + .card)
   ------------------------------ */
.cards{
  margin-top:1.5rem;
  display:grid;
  gap:1rem;
}
@media (min-width: 720px){.cards{grid-template-columns: repeat(2, minmax(0,1fr))}}
@media (min-width: 1040px){.cards{grid-template-columns: repeat(3, minmax(0,1fr))}}

.card{padding:1.25rem}
.card__head{display:flex;align-items:center;gap:.75rem;margin-bottom:.75rem}
.iconbox{
  width:44px;height:44px;
  border-radius: 1.25rem;
  background: hsl(var(--b2));
  border: 1px solid color-mix(in oklab, hsl(var(--b3)) 75%, transparent);
  display:grid;place-items:center;
  flex:0 0 auto;
}

.tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.75rem}

/* Recent list (server-rendered) */
.recent{display:grid;gap:.5rem;margin-top:.75rem}
.recent__item{display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:.75rem .9rem;border-radius:var(--radius-xl);border:1px solid color-mix(in oklab, hsl(var(--b3)) 65%, transparent);background:color-mix(in oklab, hsl(var(--b2)) 55%, transparent);transition:transform 160ms ease, border-color 160ms ease, background-color 160ms ease}
.recent__item:hover{transform:translateY(-1px);border-color:color-mix(in oklab, hsl(var(--p)) 25%, hsl(var(--b3)));background:color-mix(in oklab, hsl(var(--b2)) 70%, transparent)}
.recent__host{font-weight:600;word-break:break-all}
.badge-sm{padding:.3rem .55rem;font-size:.82rem}

/* Section head spacing */
.section__head{margin-bottom:1rem}
.section__head .p{max-width:68ch}

/* Generic text classes used in HTML */
.h2{font-size:var(--step-2);line-height:1.1;letter-spacing:-0.01em;font-weight:700;margin:0}
.p{opacity:.82;margin:.75rem 0 0 0}
.small{font-size:.9rem;opacity:.75}


/* ------------------------------
   Roadmap / timeline
   ------------------------------ */
.roadmap{padding:1.25rem}
.timeline{position:relative;display:grid;gap:1.25rem;padding-left:1.25rem;margin:0;list-style:none}
.timeline::before{
  content:'';position:absolute;left:.55rem;top:.25rem;bottom:.25rem;width:2px;
  background: color-mix(in oklab, hsl(var(--b3)) 80%, transparent);
}
.timeline>li{position:relative;padding-left:.75rem}
.timeline-middle{
  position:absolute;left:.1rem;top:.35rem;width:1rem;height:1rem;border-radius:999px;
  background:hsl(var(--p));
  box-shadow:0 0 0 4px color-mix(in oklab, hsl(var(--p)) 18%, transparent)
}
.timeline-title{font-weight:800;margin:0}
.timeline-text{opacity:.82;margin:.35rem 0 0 0}
.timeline-meta{font-size:.85rem;opacity:.65;margin-top:.35rem}

/* ------------------------------
   Contact
   ------------------------------ */
.contact{display:grid;gap:1rem;align-items:start}
@media (min-width: 980px){.contact{grid-template-columns: 1fr 1fr}}

.contact__card{padding:1.25rem}
.socials{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem}
.form{padding:1.25rem}
.form__row{display:flex;flex-direction:column;gap:.6rem;margin-top:1rem}
.label{font-size:.9rem;opacity:.75;display:block;margin-bottom:.35rem}

/* ------------------------------
   Footer
   ------------------------------ */
.footer{border-top:1px solid color-mix(in oklab, hsl(var(--b3)) 60%, transparent);padding:1.75rem 0}
.footer__inner{width:var(--container);margin-inline:auto;display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.footer__links,.footer__right{display:flex;gap:.75rem;flex-wrap:wrap;opacity:.85}
.footer__left{display:flex;align-items:center;gap:.6rem;opacity:.9}
.small{font-size:.9rem;opacity:.75}

/* ------------------------------
   DaisyUI-like components
   ------------------------------ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  border-radius: var(--radius-xl);
  padding:.75rem 1.05rem;
  font-weight:700;
  border:1px solid transparent;
  transition:transform 160ms ease, background-color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
  user-select:none;line-height:1;cursor:pointer;
}
.btn:active{transform:translateY(1px)}
.btn-sm{padding:.55rem .85rem;font-size:.9rem}
.btn-primary{background:hsl(var(--p));color:#fff;box-shadow:0 10px 30px color-mix(in oklab, hsl(var(--p)) 30%, transparent)}
.btn-primary:hover{background:color-mix(in oklab, hsl(var(--p)) 88%, black)}
.btn-ghost{background:transparent;color:hsl(var(--bc));border-color:color-mix(in oklab, hsl(var(--b3)) 70%, transparent)}
.btn-ghost:hover{background:color-mix(in oklab, hsl(var(--b2)) 70%, transparent)}

.badge{
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;padding:.35rem .65rem;font-size:.85rem;line-height:1;
  border:1px solid transparent;
}
.badge-lg{padding:.55rem .85rem;font-size:.95rem}
.badge-outline{background:transparent;border-color:color-mix(in oklab, hsl(var(--b3)) 75%, transparent);color:hsl(var(--bc))}
.badge-primary{background:color-mix(in oklab, hsl(var(--p)) 14%, transparent);border-color:color-mix(in oklab, hsl(var(--p)) 25%, hsl(var(--b3)));color:hsl(var(--bc))}
.badge-success{background:color-mix(in oklab, hsl(var(--su)) 18%, transparent);border-color:color-mix(in oklab, hsl(var(--su)) 30%, transparent);color:hsl(var(--bc))}
.badge-warning{background:color-mix(in oklab, hsl(var(--wa)) 20%, transparent);border-color:color-mix(in oklab, hsl(var(--wa)) 35%, transparent);color:hsl(var(--bc))}
.badge-error{background:color-mix(in oklab, hsl(var(--er)) 18%, transparent);border-color:color-mix(in oklab, hsl(var(--er)) 35%, transparent);color:hsl(var(--bc))}

.input,.textarea{
  width:100%;
  background: color-mix(in oklab, hsl(var(--b1)) 92%, transparent);
  color:hsl(var(--bc));
  border:1px solid color-mix(in oklab, hsl(var(--b3)) 75%, transparent);
  border-radius: var(--radius-xl);
  padding:.85rem 1rem;
  transition:border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}
.input:focus,.textarea:focus{border-color:color-mix(in oklab, hsl(var(--p)) 55%, hsl(var(--b3)));box-shadow:0 0 0 4px color-mix(in oklab, hsl(var(--p)) 18%, transparent);outline:none}

.join{display:inline-flex;align-items:stretch}
.join .join-item{border-radius:0}
.join .join-item:first-child{border-top-left-radius:var(--radius-xl);border-bottom-left-radius:var(--radius-xl)}
.join .join-item:last-child{border-top-right-radius:var(--radius-xl);border-bottom-right-radius:var(--radius-xl)}
.join .join-item + .join-item{margin-left:-1px}

.alert{display:flex;align-items:center;gap:.75rem;padding:1rem 1rem;border-radius:var(--radius-xl);border:1px solid color-mix(in oklab, hsl(var(--b3)) 70%, transparent);background:color-mix(in oklab, hsl(var(--b2)) 70%, transparent)}
.alert-warning{border-color:color-mix(in oklab, hsl(var(--wa)) 35%, hsl(var(--b3)))}

/* Result card (rendered by JS / API responses) */
.result-card{padding:1.25rem}
.result-card__top{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem}
.result-card__host{font-weight:700;word-break:break-all;margin-top:.25rem}
.result-card__signals{margin-top:1rem;display:grid;gap:.45rem;font-size:.95rem}
.result-card__actions{margin-top:1rem;display:flex;gap:.5rem;flex-wrap:wrap}

/* ------------------------------
   Optional custom cursor
   ------------------------------ */
.cursor-dot,.cursor-ring{position:fixed;top:0;left:0;pointer-events:none;z-index:9999;opacity:0;transition:opacity 200ms ease}
.cursor-dot{width:6px;height:6px;border-radius:999px;background:radial-gradient(circle at 30% 30%, color-mix(in oklab, hsl(var(--p)) 85%, white), hsl(var(--p)))}
.cursor-ring{width:34px;height:34px;border-radius:999px;border:1px solid color-mix(in oklab, hsl(var(--p)) 55%, transparent);background:color-mix(in oklab, hsl(var(--p)) 10%, transparent);backdrop-filter:blur(6px)}
.cursor-on .cursor-dot,.cursor-on .cursor-ring{opacity:1}
.cursor-ring.is-hover{transform:scale(1.25);border-color:color-mix(in oklab, hsl(var(--p)) 80%, transparent)}

/* Small tap highlight removal */
.tap{-webkit-tap-highlight-color:transparent}