/* Bytewright OÜ — site styles (v2, developer-SaaS aesthetic)
   Self-contained, no external dependencies. Light + dark, mobile-first. */

/* ---------- Design tokens ---------- */
/* Default theme is DARK (night mode). Light is opt-in via the toggle
   (:root[data-theme="light"]). Shared non-colour tokens live here too. */
:root {
  --bg: #07080e;
  --bg-soft: #0b0d16;
  --surface: #10131f;
  --surface-2: #171b2a;
  --text: #eef0f8;
  --muted: #99a1b8;
  --border: #1f2333;
  --border-strong: #2b3145;

  --accent: #7d8bff;
  --accent-2: #b476ff;
  --accent-3: #3ad7f0;
  --accent-hover: #97a2ff;
  --accent-soft: rgba(125, 139, 255, 0.14);
  --grad: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  --grad-bright: linear-gradient(120deg, var(--accent-3), var(--accent) 45%, var(--accent-2));
  --ring: rgba(125, 139, 255, 0.45);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 30px 70px -20px rgba(0, 0, 0, 0.7);
  --glow: 0 0 0 1px rgba(125, 139, 255, 0.16), 0 22px 60px -18px rgba(125, 139, 255, 0.4);

  --radius: 16px;
  --radius-lg: 22px;
  --radius-sm: 11px;
  --maxw: 1180px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

:root[data-theme="light"] {
  --bg: #ffffff;
  --bg-soft: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #f1f3f9;
  --text: #0e1120;
  --muted: #596074;
  --border: #e7e9f1;
  --border-strong: #d7dbe8;

  --accent: #4f5bff;
  --accent-2: #9b4dff;
  --accent-3: #12c2e9;
  --accent-hover: #3d49f0;
  --accent-soft: rgba(79, 91, 255, 0.09);
  --ring: rgba(79, 91, 255, 0.35);

  --shadow-sm: 0 1px 2px rgba(14, 17, 32, 0.05);
  --shadow: 0 4px 14px rgba(14, 17, 32, 0.06), 0 1px 3px rgba(14, 17, 32, 0.05);
  --shadow-lg: 0 24px 60px -20px rgba(30, 30, 90, 0.28);
  --glow: 0 0 0 1px rgba(79, 91, 255, 0.12), 0 18px 50px -18px rgba(79, 91, 255, 0.45);
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; animation-iteration-count: 1 !important; }
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 { line-height: 1.1; letter-spacing: -0.025em; margin: 0 0 .5em; font-weight: 700; }
h1 { font-size: clamp(2.4rem, 5.4vw, 4rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.6rem); }
h3 { font-size: 1.22rem; letter-spacing: -0.015em; }
p { margin: 0 0 1rem; }
a { color: var(--accent); text-decoration: none; transition: color .15s; }
a:hover { color: var(--accent-hover); }
img, svg { max-width: 100%; display: block; }
strong { font-weight: 660; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 5px; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* gradient text */
.grad {
  background: var(--grad-bright);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--mono); font-size: .78rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--accent); font-weight: 600; margin-bottom: 1.1rem;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; border-radius: 2px; background: var(--grad); }
.eyebrow.center { justify-content: center; }

.lead { font-size: 1.16rem; color: var(--muted); max-width: 62ch; }
.muted { color: var(--muted); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font: inherit; font-weight: 600; font-size: .98rem;
  padding: .8rem 1.5rem; border-radius: 999px;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: transform .14s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
}
.btn:active { transform: translateY(1px) scale(.99); }
.btn-primary { background: var(--grad); color: #fff; box-shadow: var(--glow); background-size: 140% 140%; }
.btn-primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(79,91,255,.2), 0 24px 60px -16px rgba(120,80,255,.6); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn svg { width: 18px; height: 18px; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, background .2s;
}
.site-header.scrolled { border-bottom-color: var(--border); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 750; letter-spacing: -0.03em; color: var(--text); font-size: 1.12rem; }
.brand:hover { color: var(--text); }
.brand .mark { width: 32px; height: 32px; flex: 0 0 auto; border-radius: 9px; box-shadow: var(--glow); }
.brand .oü { font-family: var(--mono); font-size: .68rem; color: var(--muted); font-weight: 500; margin-left: 3px; vertical-align: super; }

.nav-links { display: flex; align-items: center; gap: .2rem; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  color: var(--muted); font-weight: 550; font-size: .96rem;
  padding: .5rem .9rem; border-radius: 9px; transition: color .15s, background .15s; position: relative;
}
.nav-links a:hover { color: var(--text); background: var(--surface-2); }
.nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 50%; bottom: 2px; transform: translateX(-50%);
  width: 16px; height: 2px; border-radius: 2px; background: var(--grad);
}
.nav-right { display: flex; align-items: center; gap: .5rem; }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 11px;
  background: var(--surface); border: 1px solid var(--border); color: var(--text);
  cursor: pointer; transition: background .15s, border-color .15s, transform .12s;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }
.icon-btn:active { transform: scale(.95); }
.icon-btn svg { width: 18px; height: 18px; }
/* Default is dark → show the moon; light mode shows the sun. */
.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }
:root[data-theme="light"] .theme-toggle .sun { display: block; }
:root[data-theme="light"] .theme-toggle .moon { display: none; }
.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: fixed; inset: 70px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--border);
    padding: .5rem 24px 1.1rem; transform: translateY(-10px); opacity: 0; pointer-events: none;
    transition: transform .18s ease, opacity .18s ease; box-shadow: var(--shadow-lg);
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { padding: .9rem .5rem; border-radius: 0; border-bottom: 1px solid var(--border); font-size: 1.04rem; }
  .nav-links a.active::after { display: none; }
  .nav-links li:last-child a { border-bottom: none; }
}

/* ---------- Decorative background layers ---------- */
.bg-orbs { position: absolute; inset: 0; z-index: -2; overflow: hidden; pointer-events: none; }
.bg-orbs::before, .bg-orbs::after {
  content: ""; position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5;
}
.bg-orbs::before { width: 620px; height: 620px; top: -280px; right: -160px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 68%); opacity: .42; }
.bg-orbs::after { width: 520px; height: 520px; top: -120px; left: -200px;
  background: radial-gradient(circle, var(--accent-2) 0%, transparent 68%); opacity: .34; }
:root[data-theme="light"] .bg-orbs::before { opacity: .5; }
:root[data-theme="light"] .bg-orbs::after { opacity: .4; }

.grid-bg {
  position: absolute; inset: 0; z-index: -1; opacity: .6;
  background-image: linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(75% 60% at 50% 0%, #000 25%, transparent 78%);
          mask-image: radial-gradient(75% 60% at 50% 0%, #000 25%, transparent 78%);
}

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(3.5rem, 8vw, 6.5rem) 0 clamp(3rem, 6vw, 5rem); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero-copy { max-width: 620px; }
.hero h1 { margin-bottom: .35em; }
.hero .lead { font-size: 1.24rem; margin-top: .2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2.2rem; }
.hero-trust { display: flex; flex-wrap: wrap; gap: .6rem 1.4rem; margin-top: 2.2rem; color: var(--muted); font-size: .9rem; }
.hero-trust .dot { display: inline-flex; align-items: center; gap: .5rem; }
.hero-trust .dot::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--grad); box-shadow: 0 0 10px var(--accent); }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; margin: 0 auto; max-width: 520px; }
}

.pill {
  display: inline-flex; align-items: center; gap: .5rem; margin-bottom: 1.4rem;
  padding: .4rem .85rem .4rem .5rem; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-sm);
  font-size: .82rem; color: var(--muted); font-weight: 500;
}
.pill .tag { background: var(--grad); color: #fff; font-weight: 600; font-size: .72rem; padding: .16rem .5rem; border-radius: 999px; letter-spacing: .02em; }

/* ---------- SVG illustrations ---------- */
.hero-art { position: relative; width: 100%; }
.hero-art svg { width: 100%; height: auto; overflow: visible; display: block; }
.art-card { fill: var(--surface); }
.art-panel { fill: var(--surface-2); }
.art-stroke { stroke: var(--border-strong); }
.art-line { stroke: var(--border); }
.art-soft { fill: var(--border); }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
.float-a { animation: floaty 5.5s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.float-b { animation: floaty 6.5s ease-in-out infinite; animation-delay: -2.4s; transform-box: fill-box; transform-origin: center; }
.spot { position: relative; }
.spot-art { width: 100%; height: auto; display: block; overflow: visible; }

/* ---------- Sections ---------- */
section { padding: clamp(3rem, 6.5vw, 5.5rem) 0; position: relative; }
.section-head { max-width: 62ch; margin-bottom: 3rem; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-alt { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* ---------- Tech strip ---------- */
.tech-strip { padding: 2.2rem 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--bg-soft); }
.tech-strip .label { text-align: center; font-family: var(--mono); font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 1.2rem; }
.tech-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: .6rem; }
.tech-badges .badge {
  font-family: var(--mono); font-size: .84rem; font-weight: 500; color: var(--text);
  padding: .45rem .9rem; border-radius: 999px; background: var(--surface);
  border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: border-color .15s, transform .15s, color .15s;
}
.tech-badges .badge:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* ---------- Cards / grid ---------- */
.grid { display: grid; gap: 1.2rem; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 920px) { .grid.cols-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid.cols-2, .grid.cols-3 { grid-template-columns: 1fr; } }

.card {
  position: relative; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.7rem; overflow: hidden;
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--grad);
  transform: scaleX(0); transform-origin: left; transition: transform .25s ease;
}
.card:hover { border-color: var(--border-strong); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card:hover::before { transform: scaleX(1); }
.card .ic {
  width: 48px; height: 48px; border-radius: 13px; display: grid; place-items: center;
  color: #fff; background: var(--grad); margin-bottom: 1.2rem; box-shadow: var(--glow);
}
.card .ic svg { width: 23px; height: 23px; }
.card h3 { margin-bottom: .45rem; }
.card p { color: var(--muted); margin: 0; font-size: .97rem; }
.card a { font-weight: 600; }

/* steps */
.steps { display: grid; gap: 1.3rem; }
.steps .step { display: grid; grid-template-columns: auto 1fr; gap: 1.2rem; align-items: start; }
.steps .step .n {
  font-family: var(--mono); font-weight: 700; color: #fff; background: var(--grad);
  width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center;
  font-size: 1.02rem; box-shadow: var(--glow); counter-increment: step;
}
.steps .step .n::before { content: counter(step, decimal-leading-zero); }
.steps { counter-reset: step; }
.steps .step h3 { margin-bottom: .28rem; }
.steps .step p { color: var(--muted); margin: 0; }

/* ---------- Stats band ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
@media (max-width: 720px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat {
  padding: 1.6rem; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface); text-align: left;
}
.stat .big { font-size: 2.2rem; font-weight: 780; letter-spacing: -.03em; line-height: 1; }
.stat .lbl { color: var(--muted); font-size: .92rem; margin-top: .5rem; }

/* ---------- Prose ---------- */
.prose { max-width: 68ch; }
.prose h2 { margin-top: 2.6rem; }
.prose h3 { margin-top: 1.9rem; }
.prose ul { padding-left: 1.2rem; }
.prose li { margin-bottom: .45rem; }
.prose li::marker { color: var(--accent); }

/* ---------- Facts card ---------- */
.facts { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--surface); box-shadow: var(--shadow); }
.facts .row { display: grid; grid-template-columns: 210px 1fr; gap: 1rem; padding: 1rem 1.35rem; border-bottom: 1px solid var(--border); }
.facts .row:last-child { border-bottom: none; }
.facts .row .k { color: var(--muted); font-family: var(--mono); font-size: .84rem; }
.facts .row .v { font-weight: 560; }
@media (max-width: 560px) { .facts .row { grid-template-columns: 1fr; gap: .15rem; } }

/* ---------- CTA ---------- */
.cta {
  position: relative; overflow: hidden; border-radius: var(--radius-lg);
  padding: clamp(2.4rem, 5vw, 3.8rem); text-align: center; color: #fff;
  background: var(--grad); box-shadow: var(--shadow-lg);
}
.cta::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background: radial-gradient(60% 120% at 15% 0%, rgba(255,255,255,.28), transparent 55%),
    radial-gradient(50% 120% at 100% 100%, rgba(0,0,0,.22), transparent 55%);
}
.cta > * { position: relative; }
.cta .eyebrow { color: rgba(255,255,255,.9); }
.cta .eyebrow::before { background: rgba(255,255,255,.8); }
.cta h2 { color: #fff; margin-bottom: .5rem; }
.cta .lead { color: rgba(255,255,255,.9); margin: 0 auto 1.8rem; }
.cta-actions { display: flex; gap: .8rem; justify-content: center; flex-wrap: wrap; }
.cta .btn-primary { background: #fff; color: var(--accent); box-shadow: 0 10px 30px -8px rgba(0,0,0,.35); }
.cta .btn-primary:hover { background: #fff; color: var(--accent-hover); }
.cta .btn-ghost { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.4); backdrop-filter: blur(4px); }
.cta .btn-ghost:hover { background: rgba(255,255,255,.2); color: #fff; border-color: #fff; }

/* ---------- Forms ---------- */
.form { display: grid; gap: 1.15rem; max-width: 560px; }
.field { display: grid; gap: .4rem; }
.field label { font-weight: 560; font-size: .92rem; }
.field .req { color: var(--accent); }
.field input, .field textarea {
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  padding: .78rem .95rem; width: 100%; transition: border-color .15s, box-shadow .15s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--ring); }
.field textarea { resize: vertical; min-height: 140px; }
.form-note { font-size: .86rem; color: var(--muted); }
.form-status { font-size: .95rem; padding: .8rem 1rem; border-radius: var(--radius-sm); display: none; }
.form-status.show { display: block; }
.form-status.ok { background: color-mix(in srgb, #16a34a 12%, transparent); color: #16a34a; border: 1px solid color-mix(in srgb, #16a34a 30%, transparent); }
.form-status.err { background: color-mix(in srgb, #dc2626 12%, transparent); color: #dc2626; border: 1px solid color-mix(in srgb, #dc2626 30%, transparent); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 3rem; align-items: start; }
@media (max-width: 880px) { .contact-grid { grid-template-columns: 1fr; gap: 2.4rem; } }
.info-card { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); padding: 1.6rem 1.7rem; }
.contact-info { margin: 0; }
.contact-info dt { font-family: var(--mono); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-top: 1.3rem; }
.contact-info dt:first-child { margin-top: 0; }
.contact-info dd { margin: .25rem 0 0; font-weight: 550; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-soft); padding: 3.5rem 0 2.4rem; margin-top: 1rem; }
.footer-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2.5rem; margin-bottom: 2.4rem; }
.footer-brand { max-width: 34ch; }
.footer-brand p { color: var(--muted); font-size: .95rem; margin-top: .7rem; }
.footer-cols { display: flex; gap: 4rem; flex-wrap: wrap; }
.footer-col h4 { font-size: .78rem; font-family: var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: .9rem; font-weight: 600; }
.footer-col a { display: block; color: var(--text); font-size: .95rem; padding: .28rem 0; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .8rem; padding-top: 1.7rem; border-top: 1px solid var(--border); color: var(--muted); font-size: .87rem; }
.footer-bottom .legal { font-family: var(--mono); }

/* ---------- Tick list ---------- */
.ticks { list-style: none; margin: 1.6rem 0 0; padding: 0; display: grid; gap: .8rem; }
.ticks li { display: grid; grid-template-columns: auto 1fr; gap: .8rem; align-items: start; color: var(--muted); }
.ticks li b { color: var(--text); font-weight: 640; }
.ticks .tick { width: 24px; height: 24px; border-radius: 8px; background: var(--grad); display: grid; place-items: center; margin-top: 1px; box-shadow: var(--glow); }
.ticks .tick svg { width: 14px; height: 14px; color: #fff; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; gap: 2.4rem; } .split .spot { order: -1; } }

/* ---------- Utilities ---------- */
.center { text-align: center; }
.mt-0 { margin-top: 0; }
/* Fail-safe reveal: elements are visible by default. The hidden state only
   applies once JS confirms it can reveal them (adds .reveal-on to <html>),
   so no-JS / stale-cache / observer failure never leaves content invisible. */
.reveal-on .reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal-on .reveal.in { opacity: 1; transform: none; }
.skip-link { position: absolute; left: -999px; top: 0; background: var(--accent); color: #fff; padding: .6rem 1rem; border-radius: 0 0 8px 0; z-index: 100; }
.skip-link:focus { left: 0; color: #fff; }