/* ============================================================================
   LexiNova — zdieľaný dizajnový systém (jediný zdroj pravdy pre vzhľad).
   Importuj vo všetkých šablónach: <link rel="stylesheet" href="/static/css/design-system.css">
   Dark mode: <html data-theme="dark"> (riadené localStorage 'darkMode', ako doteraz).
   ============================================================================ */

/* ── Space Grotesk (display font, self-hosted kvôli CSP a GDPR) ──
   Súbory: /static/fonts/space-grotesk-latin(-ext).woff2. Kým nie sú pridané,
   nadpisy elegantne padnú na Inter (nižšie vo fallbacku). */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal; font-weight: 400 700; font-display: swap;
  src: url('/static/fonts/space-grotesk-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal; font-weight: 400 700; font-display: swap;
  src: url('/static/fonts/space-grotesk-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  /* fonts */
  --font-display: 'Space Grotesk', 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;

  /* brand */
  --primary: #4079ff;
  --primary-ink: #2c5cff;        /* prístupný modrý text/odkazy na svetlom */
  --accent: #40ffaa;             /* brand tyrkysová (svieti, na gradient) */
  --accent-ink: #12b981;         /* prístupná tyrkysová pre text/ikony na svetlom */
  --grad: linear-gradient(120deg, #4079ff, #2fd39a);

  /* surfaces + text */
  --bg: #f6f8fd;
  --surface: #ffffff;
  --surface-2: #eef2fb;
  --text: #0f1729;
  --muted: #5a647a;
  --border: rgba(15, 23, 41, .08);
  --border-strong: rgba(15, 23, 41, .16);

  /* shadows (mäkké, vrstvené) */
  --shadow-sm: 0 1px 2px rgba(15,23,41,.04), 0 4px 14px rgba(15,23,41,.05);
  --shadow-md: 0 2px 6px rgba(15,23,41,.05), 0 14px 34px rgba(15,23,41,.08);
  --shadow-lg: 0 2px 6px rgba(15,23,41,.05), 0 24px 60px rgba(64,121,255,.14);

  /* stavové farby */
  --danger: #e53e3e;
  --warning: #d97706;
  /* aliasy pre staršie šablóny appky (migrácia na zdieľaný systém) */
  --shadow: var(--shadow-md);
  --card: var(--surface);
  --card-bg: var(--surface);
  --input-bg: var(--surface);
  --bg-color: var(--bg);
  --text-main: var(--text);
  --text-color: var(--text);
  --text-muted: var(--muted);
  --primary-light: var(--accent);
  --primary-gradient: var(--grad);

  /* geometria */
  --r-sm: 10px; --r: 16px; --r-lg: 22px;
  --space-1: .5rem; --space-2: 1rem; --space-3: 1.5rem; --space-4: 2rem; --space-6: 3rem;
  --section: clamp(4rem, 9vw, 7rem);
  --container: 1160px;
}

:root[data-theme="dark"] {
  --primary-ink: #8fb0ff;
  --accent-ink: #34e0a1;
  --danger: #ff6b6b;
  --warning: #fbbf24;
  --bg: #0a0e1a;
  --surface: #121826;
  --surface-2: #0f1524;
  --text: #eef2fb;
  --muted: #95a1ba;
  --border: rgba(255, 255, 255, .09);
  --border-strong: rgba(255, 255, 255, .18);
  --shadow-sm: 0 1px 2px rgba(0,0,0,.4), 0 4px 14px rgba(0,0,0,.35);
  --shadow-md: 0 2px 6px rgba(0,0,0,.45), 0 14px 34px rgba(0,0,0,.45);
  --shadow-lg: 0 2px 6px rgba(0,0,0,.5), 0 24px 60px rgba(0,0,0,.5);
}

/* ── reset + base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg); color: var(--text);
  line-height: 1.65; overflow-x: hidden;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.1; letter-spacing: -.02em; }
h1 { font-size: clamp(2.3rem, 5vw, 3.6rem); letter-spacing: -.03em; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: 4px; }

/* ── helpers ── */
.ds-container { max-width: var(--container); margin-inline: auto; padding-inline: clamp(1.25rem, 4vw, 2rem); }
.ds-section { padding-block: var(--section); }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.eyebrow { font-family: var(--font-body); font-size: .76rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--primary-ink); }
.lead { color: var(--muted); }
.grid-auto { display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }

/* ── buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  font-family: var(--font-body); font-weight: 600; cursor: pointer; white-space: nowrap;
  border: 1px solid transparent; border-radius: 11px; padding: .72rem 1.4rem; font-size: .95rem;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s, color .2s;
}
.btn-lg { padding: .85rem 1.7rem; font-size: 1rem; }
.btn-sm { padding: .5rem 1.05rem; font-size: .9rem; }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 6px 18px rgba(64,121,255,.32); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(64,121,255,.42); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--border-strong); }
.btn-white { background: #fff; color: var(--primary-ink); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0,0,0,.2); }

/* ── cards, badges, inputs ── */
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r);
  padding: var(--space-3); box-shadow: var(--shadow-sm);
  transition: transform .22s, box-shadow .22s, border-color .22s;
}
.card-hover:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--primary) 30%, var(--border)); }
.pill {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: 50px;
  padding: .4rem .9rem; font-size: .8rem; font-weight: 600; color: var(--primary-ink);
  box-shadow: var(--shadow-sm);
}
.icon-tile {
  width: 46px; height: 46px; border-radius: 13px; flex: none;
  display: flex; align-items: center; justify-content: center; color: var(--primary-ink);
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 14%, var(--surface)), color-mix(in srgb, var(--accent) 14%, var(--surface)));
}
.icon-tile svg { width: 23px; height: 23px; }
.field {
  width: 100%; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: .8rem 1rem; color: var(--text); transition: border-color .2s, box-shadow .2s;
}
.field:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent); }
.field::placeholder { color: var(--muted); }

/* ── sticky glass nav ── */
.ds-nav {
  position: sticky; top: 0; z-index: 100; backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid transparent; transition: border-color .3s;
}
.ds-nav.scrolled { border-bottom-color: var(--border); }
.ds-logo { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--font-display); font-size: 1.22rem; font-weight: 700; letter-spacing: -.02em; }
.ds-logo img { height: 30px; width: 30px; border-radius: 8px; }
.ds-logo span { color: var(--primary-ink); }

/* ── theme toggle button ── */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 10px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--border); color: var(--muted);
  transition: color .2s, border-color .2s;
}
.theme-toggle:hover { color: var(--text); border-color: var(--border-strong); }
.theme-toggle svg { width: 19px; height: 19px; }
:root:not([data-theme="dark"]) .theme-toggle .icon-moon { display: block; }
:root:not([data-theme="dark"]) .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }

/* ── scroll reveal (bezpečné bez JS: skryje sa len keď je .js na <html>) ── */
.reveal { transition: opacity .6s ease, transform .6s ease; }
.js .reveal { opacity: 0; transform: translateY(20px); }
.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .js .reveal { opacity: 1 !important; transform: none !important; transition: none; }
  * { transition: none !important; }
}
