/* Conduit 3D — design tokens, reset, tipografie, utilitare.
   Secțiunile folosesc DOAR aceste variabile; nu definesc culori proprii pentru fundal/text. */

:root {
  color-scheme: light dark;

  /* Brand (fix, nu depinde de temă) */
  --violet-900: #2a1466;
  --violet-700: #5b2bc0;
  --violet-600: #7c3aed;
  --violet-300: #b8a4f0;
  --navy: #161a33;
  --brand-gradient: linear-gradient(135deg, #5b2bc0 0%, #7c3aed 55%, #b8a4f0 100%);
  --glow-color: #b4ff4d;
  --glow-soft: rgb(180 255 77 / 0.35);
  --night: #070914;

  /* Temă luminoasă */
  --bg: #f7f6fb;
  --surface: #ffffff;
  --surface-2: #efecf8;
  --text: #161a33;
  --muted: #545873;
  --border: #dcd7ec;
  --accent: #5b2bc0;
  --accent-hover: #4a21a3;
  --accent-text: #ffffff;
  --accent-soft: #ece5fd;
  --danger: #b42318;
  --success: #12795a;
  --shadow: 0 1px 2px rgb(22 26 51 / 0.06), 0 8px 24px rgb(22 26 51 / 0.08);

  /* Tipografie & spațiere */
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;
  --step--1: clamp(0.83rem, 0.8rem + 0.15vw, 0.9rem);
  --step-0: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --step-1: clamp(1.2rem, 1.1rem + 0.5vw, 1.4rem);
  --step-2: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --step-3: clamp(1.9rem, 1.5rem + 2vw, 3rem);
  --step-4: clamp(2.3rem, 1.7rem + 3vw, 4rem);
  --radius: 14px;
  --radius-sm: 8px;
  --gutter: clamp(16px, 4vw, 40px);
  --maxw: 1180px;
  --nav-h: 60px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1022;
    --surface: #161a33;
    --surface-2: #1e2344;
    --text: #eeebf9;
    --muted: #a9abc6;
    --border: #2b3058;
    --accent: #9d7bf5;
    --accent-hover: #b39af8;
    --accent-text: #0d1022;
    --accent-soft: #261f4d;
    --danger: #ff8a7a;
    --success: #5fd3a8;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 10px 30px rgb(0 0 0 / 0.35);
  }
}

/* Modul „Stinge lumina": separat de tema sistemului. */
html[data-mode="glow"] {
  color-scheme: dark;
  --bg: #000000;
  --surface: #050609;
  --surface-2: #0a0b12;
  --text: #6f7186;
  --muted: #4a4c5e;
  --border: #15161f;
  --accent: #3b2a6b;
  --accent-hover: #4b3785;
  --accent-text: #c9c3e6;
  --accent-soft: #0d0a1a;
  --shadow: none;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); }
body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  transition: background-color 0.6s var(--ease), color 0.6s var(--ease);
}
img, svg, video { max-width: 100%; display: block; }
img { height: auto; }
input, button, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { color: var(--accent-hover); }
h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 0.5em; letter-spacing: -0.015em; text-wrap: balance; }
h1 { font-size: var(--step-4); font-weight: 800; }
h2 { font-size: var(--step-3); font-weight: 800; }
h3 { font-size: var(--step-1); font-weight: 700; }
p { margin: 0 0 1em; text-wrap: pretty; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--violet-300); outline-offset: 2px; border-radius: 4px; }

/* Utilitare */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.eyebrow {
  display: inline-block; font-size: var(--step--1); font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 0.6rem;
}
.muted { color: var(--muted); }
.lead { font-size: var(--step-1); color: var(--muted); max-width: 60ch; }
.mono { font-family: var(--font-mono); }
.nowrap { white-space: nowrap; }

/* Elemente care strălucesc în modul glow. Oricine poate pune clasa .glow. */
.glow { transition: color 0.6s var(--ease), text-shadow 0.6s var(--ease), box-shadow 0.6s var(--ease), filter 0.6s var(--ease); }
html[data-mode="glow"] .glow {
  color: var(--glow-color);
  text-shadow: 0 0 6px var(--glow-color), 0 0 18px var(--glow-soft), 0 0 40px var(--glow-soft);
  animation: glow-pulse 3.2s ease-in-out infinite;
}
html[data-mode="glow"] svg.glow, html[data-mode="glow"] .glow svg {
  filter: drop-shadow(0 0 6px var(--glow-color)) drop-shadow(0 0 18px var(--glow-soft));
}
html[data-mode="glow"] .glow-box {
  box-shadow: 0 0 0 1px var(--glow-color), 0 0 18px var(--glow-soft), inset 0 0 18px rgb(180 255 77 / 0.12);
}
@keyframes glow-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.78; }
}

/* Reveal la scroll: doar dacă JS rulează (clasa .js pe <html>) */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}