/* AKROS — Wspólny system designu
   Paleta oparta na logo: granat #1E3A8A→#1B3478, akcenty
*/

:root {
  /* Brand */
  --akros-navy: #1B3478;
  --akros-navy-deep: #122355;
  --akros-navy-dark: #0B1838;
  --akros-blue: #2B5CD6;
  --akros-sky: #5B8DEF;
  --akros-sky-light: #E8F0FF;
  --akros-yellow: #FFD23F; /* z floty, akcent uzupełniający */

  /* Neutrale */
  --ink: #0E1626;
  --ink-2: #2A3447;
  --ink-3: #5C6781;
  --line: #E2E7F2;
  --line-soft: #EDF1F8;
  --bg: #FFFFFF;
  --bg-soft: #F6F8FC;
  --bg-cream: #F1F4FA;

  /* Typografia */
  --font-display: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;
  --font-body: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Promienie */
  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-xl: 24px;

  /* Cienie */
  --shadow-sm: 0 1px 2px rgba(11, 24, 56, 0.06), 0 1px 3px rgba(11, 24, 56, 0.04);
  --shadow-md: 0 4px 14px rgba(11, 24, 56, 0.08), 0 2px 4px rgba(11, 24, 56, 0.04);
  --shadow-lg: 0 18px 48px rgba(11, 24, 56, 0.14);

  --container: 1240px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: var(--akros-navy); text-decoration: none; }
a:hover { color: var(--akros-blue); }

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

/* ---------- TOP UTILITY BAR ---------- */
.utility-bar {
  background: var(--akros-navy-dark);
  color: rgba(255,255,255,0.85);
  font-size: 13px;
}
.utility-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 38px;
}
.utility-bar a { color: rgba(255,255,255,0.85); }
.utility-bar a:hover { color: #fff; }
.utility-bar .util-left,
.utility-bar .util-right { display: flex; align-items: center; gap: 22px; }
.utility-bar svg { width: 14px; height: 14px; }
.lang-switch { display: flex; gap: 4px; }
.lang-switch a {
  padding: 2px 6px;
  border-radius: 3px;
  font-weight: 600;
  letter-spacing: 0.04em;
  font-size: 12px;
}
.lang-switch a.active { background: rgba(255,255,255,0.12); color: #fff; }

/* ---------- HEADER ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.site-logo img { height: 38px; width: auto; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  padding: 10px 14px;
  font-weight: 600;
  font-size: 15px;
  color: var(--ink-2);
  border-radius: 8px;
  transition: background 0.15s, color 0.15s;
}
.main-nav a:hover { background: var(--bg-soft); color: var(--akros-navy); }
.main-nav a.active { color: var(--akros-navy); }
.main-nav a.active::after {
  content: "";
  display: block;
  height: 3px;
  background: var(--akros-navy);
  margin: 6px 14px -13px;
  border-radius: 2px 2px 0 0;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.15s, background 0.15s, color 0.15s;
  font-family: inherit;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--akros-navy);
  color: #fff;
  box-shadow: 0 6px 18px rgba(27, 52, 120, 0.28);
}
.btn-primary:hover { background: var(--akros-navy-deep); color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--akros-navy);
  border-color: var(--line);
}
.btn-ghost:hover { background: var(--bg-soft); border-color: var(--akros-navy); }
.btn-yellow {
  background: var(--akros-yellow);
  color: var(--akros-navy-dark);
  box-shadow: 0 6px 18px rgba(255, 210, 63, 0.4);
}
.btn-yellow:hover { background: #FFC91A; }
.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.4);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.btn-lg { padding: 16px 28px; font-size: 16px; }
.btn-sm { padding: 8px 16px; font-size: 14px; }

/* ---------- TYPOGRAPHY ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 18px;
  font-weight: 800;
  color: var(--ink);
}
h1 { font-size: clamp(40px, 5vw, 68px); letter-spacing: -0.03em; }
h2 { font-size: clamp(30px, 3.5vw, 44px); }
h3 { font-size: 22px; }
h4 { font-size: 18px; }
p { margin: 0 0 14px; color: var(--ink-2); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--akros-navy);
}
.eyebrow::before {
  content: "";
  width: 28px; height: 2px;
  background: var(--akros-navy);
}
.eyebrow.on-dark { color: var(--akros-yellow); }
.eyebrow.on-dark::before { background: var(--akros-yellow); }

.lead { font-size: 19px; color: var(--ink-2); max-width: 60ch; }

/* ---------- SECTIONS ---------- */
section { padding: 96px 0; }
section.tight { padding: 64px 0; }
section.dark {
  background: var(--akros-navy-dark);
  color: #fff;
}
section.dark h1, section.dark h2, section.dark h3 { color: #fff; }
section.dark p { color: rgba(255,255,255,0.78); }
section.cream { background: var(--bg-cream); }
section.soft { background: var(--bg-soft); }

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 56px;
}
.section-head .left { max-width: 720px; }

/* ---------- FOOTER ---------- */
.site-footer {
  background: var(--akros-navy-dark);
  color: rgba(255,255,255,0.75);
  padding: 80px 0 0;
  font-size: 15px;
}
.site-footer h4 {
  color: #fff;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: 22px;
  font-weight: 700;
}
.site-footer a { color: rgba(255,255,255,0.75); display: block; padding: 6px 0; }
.site-footer a:hover { color: #fff; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 56px;
  padding-bottom: 56px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(255,255,255,0.55);
}
.footer-logo { height: 32px; filter: brightness(0) invert(1); margin-bottom: 16px; opacity: 0.95; }

/* ---------- UTILITIES ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 32px;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}
.card:hover {
  border-color: var(--akros-navy);
  box-shadow: var(--shadow-md);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background: var(--akros-sky-light);
  color: var(--akros-navy);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

/* Stats */
.stat-row { display: flex; gap: 48px; flex-wrap: wrap; }
.stat .num {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--akros-navy);
  line-height: 1;
}
.stat .num .unit { font-size: 32px; color: var(--akros-blue); }
.stat .label { color: var(--ink-3); font-size: 14px; margin-top: 8px; }

/* Responsive */
@media (max-width: 980px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav { display: none; }
  .site-header .container { height: 72px; }
  section { padding: 64px 0; }
  .utility-bar .util-left .hide-sm { display: none; }
}

/* Form */
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-row.full { grid-template-columns: 1fr; }
.form-field label {
  display: block;
  font-weight: 600;
  font-size: 13px;
  color: var(--ink-2);
  margin-bottom: 6px;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  font-family: inherit;
  font-size: 15px;
  background: #fff;
  transition: border-color 0.15s;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--akros-navy);
}

/* Breadcrumbs */
.breadcrumb {
  display: flex;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-3);
  padding: 18px 0 0;
}
.breadcrumb a { color: var(--ink-3); }
.breadcrumb a:hover { color: var(--akros-navy); }
.breadcrumb .sep { opacity: 0.4; }

/* Page header (subpages) */
.page-header {
  background: var(--bg-cream);
  padding: 60px 0 80px;
  border-bottom: 1px solid var(--line);
}
.page-header h1 { margin-bottom: 14px; font-size: clamp(36px, 4vw, 56px); }
.page-header .lead { font-size: 19px; }

/* SVG icons baseline */
.icon { width: 24px; height: 24px; flex-shrink: 0; }