/* ============================================================
   Stellaxis Technologies — shared stylesheet
   Monochrome / black + white / Inter. Expands the original look.
   ============================================================ */

:root {
    --bg: #000000;
    --fg: #ffffff;
    --muted: rgba(255, 255, 255, 0.62);
    --muted-2: rgba(255, 255, 255, 0.42);
    --line: rgba(255, 255, 255, 0.12);
    --line-soft: rgba(255, 255, 255, 0.07);
    --card: rgba(255, 255, 255, 0.025);
    --card-hover: rgba(255, 255, 255, 0.05);
    --glow: rgba(255, 255, 255, 0.10);
    --max: 1180px;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background-color: var(--bg);
    color: var(--fg);
    line-height: 1.65;
    overflow-x: hidden;
    overscroll-behavior-y: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a, button { touch-action: manipulation; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ---------- Background canvas ---------- */
#neuralNetwork {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    pointer-events: none;
}
/* radial vignette so content stays readable over the network */
.bg-veil {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background: radial-gradient(ellipse at 50% 38%, rgba(0,0,0,0) 0%, rgba(0,0,0,0.45) 55%, rgba(0,0,0,0.82) 100%);
}

.content { position: relative; z-index: 2; }

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 28px; }

section { padding: 110px 0; position: relative; }
.section-sm { padding: 80px 0; }

.eyebrow {
    font-size: 12px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--muted-2);
    font-weight: 500;
    margin-bottom: 22px;
}

h1, h2, h3, h4 { font-weight: 300; letter-spacing: -0.02em; line-height: 1.1; }
h2 { font-size: clamp(30px, 4.4vw, 50px); margin-bottom: 24px; }
h3 { font-size: 21px; font-weight: 400; letter-spacing: -0.01em; }
p { color: var(--muted); font-size: 16.5px; }
.lead { font-size: clamp(17px, 2vw, 20px); color: rgba(255,255,255,0.78); max-width: 720px; }

.section-head { max-width: 760px; margin-bottom: 60px; }

/* ---------- Navigation ---------- */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 28px;
    transition: background 0.4s var(--ease), border-color 0.4s var(--ease), padding 0.4s var(--ease);
    border-bottom: 1px solid transparent;
}
.nav.scrolled {
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line-soft);
    padding: 15px 28px;
}
.brand { display: flex; flex-direction: column; line-height: 1; }
.brand .b1 { font-size: 18px; font-weight: 600; letter-spacing: 0.18em; }
.brand .b2 { font-size: 9px; font-weight: 500; letter-spacing: 0.42em; color: var(--muted-2); margin-top: 4px; }

.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a {
    font-size: 14px;
    color: var(--muted);
    letter-spacing: 0.02em;
    transition: color 0.25s var(--ease);
    position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--fg); }
.nav-links a.active::after {
    content: ''; position: absolute; left: 0; right: 0; bottom: -7px;
    height: 1px; background: rgba(255,255,255,0.5);
}
.nav-cta {
    border: 1px solid var(--line);
    padding: 9px 20px !important;
    border-radius: 2px;
    transition: all 0.3s var(--ease) !important;
}
.nav-cta:hover { background: var(--fg); color: #000 !important; border-color: var(--fg); }

.nav-toggle { display: none; background: none; border: 0; color: var(--fg); cursor: pointer; padding: 6px; }
.nav-toggle svg { width: 26px; height: 26px; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; gap: 10px;
    font-size: 14px; letter-spacing: 0.14em; text-transform: uppercase;
    padding: 15px 34px; border-radius: 2px; cursor: pointer;
    transition: all 0.3s var(--ease);
    border: 1px solid var(--line); background: transparent; color: var(--fg);
    font-family: inherit;
}
.btn:hover { border-color: var(--fg); background: rgba(255,255,255,0.04); transform: translateY(-1px); }
.btn-solid { background: var(--fg); color: #000; border-color: var(--fg); }
.btn-solid:hover { background: rgba(255,255,255,0.85); color: #000; }
.btn .arrow { transition: transform 0.3s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.btn-row { display: flex; gap: 16px; flex-wrap: wrap; }

.textlink {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 14px; letter-spacing: 0.04em; color: var(--fg);
    border-bottom: 1px solid var(--line); padding-bottom: 3px;
    transition: border-color 0.3s var(--ease), gap 0.3s var(--ease);
}
.textlink:hover { border-color: var(--fg); gap: 12px; }

/* ---------- Hero ---------- */
.hero { min-height: 100vh; display: flex; align-items: center; padding: 120px 0 90px; }
.hero-panel {
    width: fit-content;
    max-width: 820px;
    padding: 46px 52px;
    background: rgba(0, 0, 0, 0.52);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--line-soft);
    border-radius: 14px;
}
.hero h1 { font-size: clamp(40px, 6.4vw, 82px); max-width: 16ch; }
.hero .lead { margin: 28px 0 40px; }
.hero-tag {
    display: inline-flex; align-items: center; gap: 10px;
    font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase;
    color: var(--muted); border: 1px solid var(--line); border-radius: 100px;
    padding: 7px 16px; margin-bottom: 32px;
}
.hero-tag .dot { width: 6px; height: 6px; border-radius: 50%; background: #fff; box-shadow: 0 0 10px 2px rgba(255,255,255,0.6); }

/* ---------- Readability panels over the animated background ---------- */
.page-head > .wrap,
.section-head,
.split,
.steps,
.stats,
.cta-band > .wrap {
    background: rgba(0, 0, 0, 0.52);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid var(--line-soft);
    border-radius: 14px;
}
.section-head { padding: 36px 40px; }
/* page header panel: identical treatment to the home hero panel */
.page-head > .wrap { width: fit-content; max-width: 820px; padding: 46px 52px; }
.split { padding: 44px 48px; }
.steps { padding: 8px 44px 36px; }
.stats { padding: 40px 44px; }
.cta-band > .wrap { padding: 60px 50px; max-width: 880px; }

/* ---------- Grids & cards ---------- */
.grid { display: grid; gap: 22px; }
.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 {
    border: 1px solid var(--line-soft);
    background: var(--card);
    border-radius: 6px;
    padding: 34px 30px;
    transition: border-color 0.4s var(--ease), background 0.4s var(--ease), transform 0.4s var(--ease);
    position: relative;
    overflow: hidden;
}
.card:hover { border-color: var(--line); background: var(--card-hover); transform: translateY(-3px); }
.card h3 { margin-bottom: 12px; }
.card p { font-size: 15px; }
.card .num {
    font-size: 12px; letter-spacing: 0.2em; color: var(--muted-2);
    font-variant-numeric: tabular-nums; margin-bottom: 18px; display: block;
}
.card .ico {
    width: 40px; height: 40px; margin-bottom: 22px;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid var(--line); border-radius: 8px;
}
.card .ico svg { width: 20px; height: 20px; stroke: #fff; }

/* fear → answer block */
.fa { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--line-soft); border-radius: 6px; overflow: hidden; }
.fa + .fa { margin-top: 16px; }
.fa > div { padding: 30px 32px; }
.fa .fear { background: rgba(255,255,255,0.012); border-right: 1px solid var(--line-soft); }
.fa .fear .k { font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 10px; }
.fa .fear p { color: rgba(255,255,255,0.72); }
.fa .ans .k { font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; color: #fff; margin-bottom: 10px; }

/* feature list */
.flist { list-style: none; display: grid; gap: 18px; }
.flist li { display: flex; gap: 16px; align-items: flex-start; }
.flist .chk { flex: 0 0 auto; width: 22px; height: 22px; border: 1px solid var(--line); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-top: 3px; }
.flist .chk svg { width: 12px; height: 12px; stroke: #fff; }
.flist b { font-weight: 500; color: #fff; }
.flist span { color: var(--muted); }

/* split layout */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 70px; align-items: center; }
.split.rev .split-media { order: -1; }

/* stat row */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.stat .n { font-size: clamp(34px, 4vw, 52px); font-weight: 300; letter-spacing: -0.03em; }
.stat .l { font-size: 14px; color: var(--muted); margin-top: 8px; }
.stat .src { font-size: 11px; color: var(--muted-2); margin-top: 6px; }

/* process steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.step { padding: 30px 26px 30px 0; border-top: 1px solid var(--line); position: relative; }
.step .n { font-size: 12px; letter-spacing: 0.2em; color: var(--muted-2); margin-bottom: 14px; }
.step h3 { font-size: 19px; margin-bottom: 10px; }
.step p { font-size: 14.5px; }

/* deployment comparison */
.dep { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.dep .card { display: flex; flex-direction: column; }
.dep .tag { font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 16px; }
.dep h3 { font-size: 23px; margin-bottom: 8px; }
.dep .best { margin-top: auto; padding-top: 22px; border-top: 1px solid var(--line-soft); font-size: 13.5px; color: var(--muted); }
.dep .best b { color: #fff; font-weight: 500; }

/* ---------- CTA band ---------- */
.cta-band { text-align: center; }
.cta-band h2 { max-width: 18ch; margin: 0 auto 22px; }
.cta-band p { max-width: 56ch; margin: 0 auto 36px; }
.cta-band .btn-row { justify-content: center; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--line-soft); padding: 64px 0 40px; position: relative; z-index: 2; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 50px; }
.foot-grid h4 { font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 20px; font-weight: 500; }
.foot-grid a, .foot-grid p { display: block; font-size: 14px; color: var(--muted); margin-bottom: 12px; transition: color 0.25s var(--ease); }
.foot-grid a:hover { color: #fff; }
.foot-brand .b1 { font-size: 17px; font-weight: 600; letter-spacing: 0.18em; color: #fff; }
.foot-brand p { max-width: 32ch; margin-top: 16px; }
.foot-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 28px; border-top: 1px solid var(--line-soft); font-size: 13px; color: var(--muted-2); flex-wrap: wrap; gap: 12px; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    html { scroll-behavior: auto; }
}

/* ---------- Forms ---------- */
.field { margin-bottom: 22px; }
.field label { display: block; font-size: 13px; letter-spacing: 0.04em; color: var(--muted); margin-bottom: 9px; }
.field label .req { color: rgba(255,255,255,0.85); }
.field input, .field select, .field textarea {
    width: 100%; background: rgba(255,255,255,0.025); border: 1px solid var(--line);
    color: #fff; font-family: inherit; font-size: 15px; padding: 14px 16px; border-radius: 4px;
    transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.field input::placeholder, .field textarea::placeholder { color: rgba(255,255,255,0.3); }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: rgba(255,255,255,0.55); background: rgba(255,255,255,0.04); }
.field select { appearance: none; -webkit-appearance: none; cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='white' stroke-opacity='0.5'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; }
.field select option { background: #0a0a0a; color: #fff; }
.field textarea { resize: vertical; min-height: 130px; }
.field-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }
.form-note { font-size: 13px; color: var(--muted-2); margin-top: 6px; }
.form-msg { padding: 16px 18px; border-radius: 4px; margin-bottom: 22px; font-size: 14.5px; display: none; }
.form-msg.show { display: block; }
.form-msg.ok { border: 1px solid rgba(255,255,255,0.4); background: rgba(255,255,255,0.05); }
.form-msg.err { border: 1px solid rgba(255,120,120,0.5); background: rgba(255,80,80,0.08); color: #ffd9d9; }

/* ---------- Assessment / quiz ---------- */
.quiz { max-width: 760px; margin: 0 auto; }
.quiz-card { border: 1px solid var(--line); background: rgba(255,255,255,0.018); border-radius: 10px; padding: 46px 44px; min-height: 420px; display: flex; flex-direction: column; }
.quiz-progress { height: 2px; background: var(--line-soft); border-radius: 2px; margin-bottom: 38px; overflow: hidden; }
.quiz-progress .bar { height: 100%; background: #fff; width: 0; transition: width 0.5s var(--ease); }
.quiz-step-label { font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 18px; }
.quiz-q { font-size: clamp(22px, 3vw, 30px); font-weight: 300; letter-spacing: -0.02em; margin-bottom: 30px; line-height: 1.25; }
.quiz-opts { display: grid; gap: 12px; }
.quiz-opt {
    text-align: left; width: 100%; cursor: pointer; font-family: inherit;
    border: 1px solid var(--line); background: rgba(255,255,255,0.02); color: #fff;
    padding: 18px 20px; border-radius: 6px; font-size: 16px;
    display: flex; align-items: center; gap: 14px;
    transition: border-color 0.25s var(--ease), background 0.25s var(--ease), transform 0.2s var(--ease);
}
.quiz-opt:hover { border-color: rgba(255,255,255,0.55); background: rgba(255,255,255,0.05); transform: translateX(3px); }
.quiz-opt.sel { border-color: #fff; background: rgba(255,255,255,0.08); }
.quiz-opt .mk { flex: 0 0 auto; width: 20px; height: 20px; border: 1px solid var(--line); border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.quiz-opt.sel .mk { border-color: #fff; }
.quiz-opt.sel .mk::after { content: ''; width: 10px; height: 10px; border-radius: 50%; background: #fff; }
.quiz-nav { display: flex; justify-content: space-between; align-items: center; margin-top: 34px; }
.quiz-back { background: none; border: 0; color: var(--muted); font-family: inherit; font-size: 14px; cursor: pointer; letter-spacing: 0.04em; }
.quiz-back:hover { color: #fff; }
.quiz-back:disabled { opacity: 0.25; cursor: default; }

.result-badge { display: inline-block; font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 16px; }
.result-model { font-size: clamp(30px, 4.5vw, 46px); font-weight: 300; letter-spacing: -0.02em; margin-bottom: 20px; }
.result-rec { display: grid; gap: 14px; margin: 28px 0; text-align: left; }
.result-rec .ri { display: flex; gap: 14px; align-items: flex-start; padding: 16px 0; border-top: 1px solid var(--line-soft); }
.result-rec .ri:last-child { border-bottom: 1px solid var(--line-soft); }
.result-rec .ri .chk { flex: 0 0 auto; width: 22px; height: 22px; border: 1px solid var(--line); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-top: 2px; }
.result-rec .ri .chk svg { width: 12px; height: 12px; stroke: #fff; }

/* ---------- Page header (interior pages) ---------- */
.page-head { padding: 180px 0 70px; }
.page-head h1 { font-size: clamp(38px, 5.4vw, 66px); max-width: 18ch; }
.page-head .lead { margin-top: 26px; }
.breadcrumb { font-size: 13px; color: var(--muted-2); margin-bottom: 26px; letter-spacing: 0.04em; }
.breadcrumb a:hover { color: #fff; }

/* ---------- Responsive ---------- */

/* Tablet landscape / small laptop */
@media (max-width: 1024px) {
    section { padding: 92px 0; }
    .page-head { padding: 160px 0 60px; }
    .split { gap: 48px; }
}

/* Tablet */
@media (max-width: 940px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .dep { grid-template-columns: 1fr; }
    .steps { grid-template-columns: repeat(2, 1fr); }
    .split { grid-template-columns: 1fr; gap: 36px; }
    .split.rev .split-media { order: 0; }
    .foot-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
    .page-head > .wrap { max-width: 100%; }
}

/* Switch to mobile drawer nav early enough for tablet portrait */
@media (max-width: 860px) {
    .nav-links {
        position: fixed; top: 0; right: 0; bottom: 0; width: 78%; max-width: 320px;
        flex-direction: column; align-items: flex-start; justify-content: center; gap: 28px;
        background: rgba(0,0,0,0.97); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
        padding: 40px; transform: translateX(100%); transition: transform 0.4s var(--ease);
        z-index: 60; border-left: 1px solid var(--line-soft);
    }
    .nav-links.open { transform: translateX(0); }
    .nav-links a { font-size: 18px; }
    .nav-links .nav-cta { padding: 12px 22px !important; }
    .nav-toggle { display: block; z-index: 61; }
}

/* Phones */
@media (max-width: 680px) {
    section { padding: 72px 0; }
    .wrap { padding: 0 18px; }
    .nav { padding: 16px 18px; }
    .nav.scrolled { padding: 13px 18px; }
    h2 { font-size: clamp(26px, 7vw, 38px); }
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
    .stats { grid-template-columns: 1fr; gap: 22px; }
    .steps { grid-template-columns: 1fr; }
    .field-2 { grid-template-columns: 1fr; gap: 0; }
    .fa { grid-template-columns: 1fr; }
    .fa .fear { border-right: 0; border-bottom: 1px solid var(--line-soft); }
    .foot-grid { grid-template-columns: 1fr; gap: 30px; }
    .foot-bottom { flex-direction: column; align-items: flex-start; }
    .quiz-card { padding: 30px 22px; }
    .hero { padding: 104px 0 64px; min-height: auto; }
    .page-head { padding: 124px 0 48px; }
    .btn { padding: 14px 26px; }
    .btn-row { gap: 12px; }
    /* lighter panels on phones: drop blur for performance, raise opacity for contrast */
    .hero-panel,
    .page-head > .wrap,
    .section-head,
    .split,
    .steps,
    .stats,
    .cta-band > .wrap {
        -webkit-backdrop-filter: none; backdrop-filter: none;
        background: rgba(0, 0, 0, 0.62);
        padding-left: 22px; padding-right: 22px;
    }
    .hero-panel { padding: 28px 22px; max-width: 100%; }
    .section-head { padding: 26px 22px; }
    .split { padding: 28px 22px; }
    .steps { padding: 6px 22px 26px; }
    .stats { padding: 30px 22px; }
    .cta-band > .wrap { padding: 44px 24px; }
}