/* =====================================================================
   kurs-bdo.pl - Design tokens & base
   All visual values flow from these variables. Change a token here and
   it cascades site-wide. Tweaks panel overrides a subset at :root level.
   ===================================================================== */

:root {
  /* ---- Brand palette (from logo) ---- */
  --green-900: #14401a;
  --green-800: #1b5e20;
  --green-700: #2e7d32;   /* main */
  --green-600: #388e3c;   /* accent */
  --green-500: #43a047;
  --green-200: #b9e0bd;
  --green-100: #e8f5e9;   /* light bg */
  --green-50:  #f2f9f3;   /* near-white tint */

  --graphite: #2d3436;
  --ink-800:  #262b2c;
  --ink-600:  #4c5552;
  --ink-500:  #5f6a65;    /* secondary text */
  --ink-400:  #828d87;

  --line:      #e3ebe4;
  --line-soft: #eef3ef;
  --white:     #ffffff;

  /* ---- Semantic (what components reference) ---- */
  --accent:        var(--green-700);
  --accent-strong: color-mix(in srgb, var(--accent), #000 24%);
  --accent-soft:   color-mix(in srgb, var(--accent), #fff 86%);
  --accent-tint:   color-mix(in srgb, var(--accent), #fff 93%);

  /* shield silhouette (hero watermark) */
  --shield-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M11.46 3.54 5 6v5c0 4.5 3 7 6 8 3-1 6-3.5 6-8V6l-6.46-2.46a1.5 1.5 0 0 0-1.08 0Z' fill='black'/%3E%3C/svg%3E");

  --text:        var(--graphite);
  --text-soft:   var(--ink-500);
  --text-mute:   var(--ink-400);
  --heading:     var(--graphite);

  --surface:     var(--white);
  --surface-alt: var(--green-50);
  --surface-ink: #20312a;       /* dark footer/feature blocks */
  --border:      var(--line);

  /* ---- Radius (tweakable) ---- */
  --radius-base: 16px;
  --r-sm:  calc(var(--radius-base) * 0.5);
  --r:     var(--radius-base);
  --r-lg:  calc(var(--radius-base) * 1.5);
  --r-xl:  calc(var(--radius-base) * 2);
  --r-pill: 999px;

  /* ---- Shadows ---- */
  --shadow-xs: 0 1px 2px rgba(45,52,54,.05);
  --shadow-sm: 0 2px 6px rgba(45,52,54,.05), 0 1px 2px rgba(45,52,54,.04);
  --shadow:    0 8px 24px -10px rgba(45,52,54,.14), 0 2px 6px rgba(45,52,54,.05);
  --shadow-lg: 0 24px 50px -18px rgba(27,94,32,.22), 0 6px 16px -8px rgba(45,52,54,.10);

  /* ---- Density (tweakable: .82 / 1 / 1.18) ---- */
  --density: 1;
  --section-y: calc(94px * var(--density));
  --block-gap: calc(28px * var(--density));
  --card-pad:  calc(28px * var(--density));

  /* ---- Layout ---- */
  --maxw: 1180px;
  --maxw-narrow: 760px;
  --gutter: clamp(20px, 5vw, 56px);
  --header-h: 76px;

  /* ---- Type ---- */
  --font-head: 'Figtree', system-ui, -apple-system, sans-serif;
  --font-body: 'Figtree', system-ui, -apple-system, sans-serif;

  --fs-display: clamp(2.35rem, 1.5rem + 3.4vw, 3.65rem);
  --fs-h1:      clamp(2.05rem, 1.45rem + 2.6vw, 3.0rem);
  --fs-h2:      clamp(1.65rem, 1.25rem + 1.7vw, 2.35rem);
  --fs-h3:      clamp(1.22rem, 1.05rem + 0.6vw, 1.5rem);
  --fs-lead:    clamp(1.08rem, 1.0rem + 0.4vw, 1.28rem);
  --fs-body:    1.0625rem;   /* ~17px */
  --fs-sm:      0.9375rem;
  --fs-xs:      0.8125rem;
}

/* ---- Tweak-driven font families ---- */
:root[data-font="jakarta"] { --font-head: 'Plus Jakarta Sans', sans-serif; --font-body: 'Plus Jakarta Sans', sans-serif; }
:root[data-font="instrument"] { --font-head: 'Instrument Sans', sans-serif; --font-body: 'Instrument Sans', sans-serif; }
:root[data-font="serif"] { --font-head: 'Source Serif 4', Georgia, serif; --font-body: 'Figtree', sans-serif; }

/* ---- Density presets ---- */
:root[data-density="compact"] { --density: .82; }
:root[data-density="comfy"]   { --density: 1.18; }

/* =====================================================================
   Reset / base
   ===================================================================== */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--text);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg, picture { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--heading);
  line-height: 1.12;
  font-weight: 600;
  letter-spacing: -0.015em;
}
/* Balance only on short display headings - long content h2/h3 should fill the line */
h1, .page-hero h2, .hero h2, .section-head h2 { text-wrap: balance; }
:root[data-font="serif"] h1, :root[data-font="serif"] h2, :root[data-font="serif"] h3 { font-weight: 500; letter-spacing: -0.005em; }

p { text-wrap: pretty; }

:focus-visible { outline: 3px solid var(--green-500); outline-offset: 2px; border-radius: 4px; }

/* =====================================================================
   Layout primitives
   ===================================================================== */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.wrap--narrow { max-width: var(--maxw-narrow); }

.section { padding-block: var(--section-y); }
.section--tight { padding-block: calc(var(--section-y) * 0.62); }
.section--alt { background: var(--surface-alt); }
.section--tint { background: linear-gradient(180deg, var(--surface) 0%, var(--surface-alt) 100%); }

.stack { display: flex; flex-direction: column; }
.stack > * + * { margin-top: var(--block-gap); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: var(--fs-sm); font-weight: 600; letter-spacing: .02em;
  color: var(--accent); text-transform: none;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; border-radius: 2px; background: var(--accent); }

.section-head { max-width: 660px; }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head .eyebrow { margin-bottom: 14px; }
.section-head h2 { font-size: var(--fs-h2); }
.section-head p { margin-top: 14px; color: var(--text-soft); font-size: var(--fs-lead); }

/* Brand swoosh underline echoing the logo */
.swoosh { display: block; width: 130px; height: 10px; margin-top: 10px; color: var(--green-600); }

/* utility */
.text-accent { color: var(--accent); }
.muted { color: var(--text-soft); }
.center { text-align: center; }
.hide-mobile { }
.grid { display: grid; gap: var(--block-gap); }
/* A Reveal wrapper between the grid and a card breaks height:100% on the card
   (the block wrapper's stretched size doesn't resolve for the child). Making
   the wrapper a column flex and stretching its child restores equal-height
   cards in every grid row. */
.grid > .reveal { display: flex; flex-direction: column; }
.grid > .reveal > * { flex: 1; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(min(100%, 290px), 1fr)); }

@media (max-width: 900px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}