/* BALCER SOLUTIONS – WWW starter (dark-first)
   Brand colors (brandbook):
   - Energetic Red: #E7321F
   - Off Black:     #0E0E17

   Font:
   - AT AERO (jeśli posiadasz webfont/licencję): dodaj @font-face poniżej.
*/

/* ===== OPTIONAL: webfont (AT AERO) =====
font-face {
  font-family: 'AT Aero';
  src: url('assets/fonts/AT-Aero.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
font-face {
  font-family: 'AT Aero';
  src: url('assets/fonts/AT-Aero-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
*/

:root {
  --red: #E7321F;
  --black: #0E0E17;
  --white: #FFFFFF;

  --bg: var(--black);
  --fg: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.72);
  --muted2: rgba(255,255,255,0.58);

  --card: rgba(255,255,255,0.04);
  --card2: rgba(255,255,255,0.06);
  --stroke: rgba(255,255,255,0.12);
  --shadow: 0 10px 30px rgba(0,0,0,0.35);

  --radius: 16px;
  --radius-sm: 12px;

  --container: 1200px;
  --gap: 22px;

  --font: 'AT Aero', 'Inter', 'Space Grotesk', 'Montserrat', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

/* Light theme (toggle) */
[data-theme="light"] {
  --bg: #FFFFFF;
  --fg: rgba(14,14,23,0.92);
  --muted: rgba(14,14,23,0.72);
  --muted2: rgba(14,14,23,0.58);

  --card: rgba(14,14,23,0.04);
  --card2: rgba(14,14,23,0.06);
  --stroke: rgba(14,14,23,0.12);
  --shadow: 0 10px 30px rgba(14,14,23,0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
a:hover { opacity: 0.92; }

.container {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.skip {
  position: absolute;
  left: -999px;
  top: 10px;
  background: var(--red);
  color: white;
  padding: 10px 14px;
  border-radius: 999px;
}
.skip:focus { left: 10px; z-index: 1000; }

/* HEADER */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-bottom: 1px solid var(--stroke);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand__logo { display: block; height: auto; }

.nav {
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav a { padding: 8px 10px; border-radius: 10px; }
.nav a:hover { background: var(--card); }

/* Theme toggle */
.theme {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: var(--card);
  color: var(--fg);
  cursor: pointer;
}
.theme__dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--red);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--red) 18%, transparent);
}
.theme__label { font-size: 14px; opacity: 0.86; }

.hamburger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--stroke);
  background: var(--card);
  cursor: pointer;
}
.hamburger span {
  display: block;
  height: 2px;
  margin: 6px 10px;
  background: var(--fg);
  border-radius: 999px;
}

.mobile { border-top: 1px solid var(--stroke); }
.mobile__inner { display: grid; gap: 10px; padding: 14px 0 18px; }
.mobile a { padding: 10px 12px; border-radius: 12px; background: var(--card); }

/* HERO */
.hero {
  padding: 70px 0 36px;
  border-bottom: 1px solid var(--stroke);
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 30px;
  align-items: start;
}
.kicker {
  margin: 0 0 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--muted);
}
.kicker__slash { color: var(--red); margin-right: 6px; }

h1 {
  margin: 0 0 14px;
  font-size: clamp(40px, 4.5vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.lead {
  margin: 0 0 18px;
  font-size: 18px;
  color: var(--muted);
  max-width: 62ch;
}

.hero__cta { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--red) 35%, transparent);
  background: var(--red);
  color: white;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.btn:hover { filter: brightness(0.97); }

.btn--ghost {
  background: transparent;
  border: 1px solid var(--stroke);
  color: var(--fg);
}
.btn--ghost:hover { background: var(--card); }

.btn--secondary {
  background: transparent;
  color: var(--red);
  border: 1px solid color-mix(in srgb, var(--red) 55%, transparent);
}
.btn--secondary:hover { background: color-mix(in srgb, var(--red) 12%, transparent); }

.hero__meta { display: flex; gap: 10px; margin-top: 18px; flex-wrap: wrap; }
.pill {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--stroke);
  color: var(--muted);
  font-size: 14px;
}

/* HERO panel */
.panel {
  border-radius: var(--radius);
  border: 1px solid var(--stroke);
  background: linear-gradient(180deg, var(--card2), transparent);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.panel__line { height: 3px; background: var(--red); }
.panel__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.panel__item {
  padding: 16px;
  border-top: 1px solid var(--stroke);
  border-right: 1px solid var(--stroke);
}
.panel__item:nth-child(2n) { border-right: none; }
.panel__title { font-weight: 800; margin-bottom: 6px; }
.panel__text { color: var(--muted2); font-size: 14px; }

/* SECTIONS */
.section { padding: 56px 0; }
.section__head { max-width: 78ch; }

h2 {
  margin: 0 0 12px;
  font-size: clamp(28px, 3vw, 46px);
  line-height: 1.12;
  letter-spacing: -0.015em;
}

h3 { margin: 0 0 10px; font-size: 20px; line-height: 1.25; }

.muted { color: var(--muted); margin: 0; }
.slash { color: var(--red); margin-right: 10px; }

/* Cards grid */
.cards {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
}
.card {
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--stroke);
  background: var(--card);
}
.card p { margin: 0; color: var(--muted); }

/* Steps */
.steps {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}
.step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--stroke);
  background: var(--card);
  border-radius: var(--radius);
}
.step__n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: color-mix(in srgb, var(--red) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--red) 35%, transparent);
  color: var(--red);
  font-weight: 800;
}
.step p { margin: 0; color: var(--muted); }

/* Split */
.split {
  margin-top: 22px;
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 22px;
  align-items: start;
}

.bullets { margin: 14px 0 0; color: var(--muted); }
.bullets li { margin: 8px 0; }

.callout {
  border-radius: var(--radius);
  border: 1px solid var(--stroke);
  background: linear-gradient(180deg, color-mix(in srgb, var(--red) 10%, transparent), var(--card));
  padding: 18px;
  box-shadow: var(--shadow);
}
.callout__kicker { margin: 0 0 10px; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 800; font-size: 12px; color: var(--muted); }
.callout__title { margin: 0 0 10px; font-size: 22px; font-weight: 900; }
.callout__text { margin: 0; color: var(--muted); }

/* Stats */
.stats {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}
.stat {
  padding: 18px;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  background: var(--card);
}
.stat__n { font-weight: 900; font-size: 28px; margin-bottom: 8px; }
.stat__t { color: var(--muted); }

/* Checks */
.checks {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap);
}
.check {
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--stroke);
  background: var(--card);
  position: relative;
  color: var(--muted);
}
.check::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 18px;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--red);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--red) 14%, transparent);
}
.check { padding-left: 40px; }

/* Contact */
.contact {
  margin-top: 22px;
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 22px;
  align-items: start;
}
.contact__grid { margin-top: 14px; display: grid; gap: 12px; }
.contact__item {
  padding: 14px 16px;
  border: 1px solid var(--stroke);
  background: var(--card);
  border-radius: var(--radius);
  display: grid;
  gap: 6px;
}
.contact__item span { color: var(--muted2); font-size: 13px; }
.contact__item a { font-weight: 800; }

.form {
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--stroke);
  background: var(--card);
}
label { display: grid; gap: 6px; margin-bottom: 12px; }
label span { color: var(--muted2); font-size: 13px; }
input, textarea {
  width: 100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid var(--stroke);
  background: color-mix(in srgb, var(--bg) 86%, white);
  color: var(--fg);
  outline: none;
}
input:focus, textarea:focus {
  border-color: color-mix(in srgb, var(--red) 60%, var(--stroke));
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--red) 12%, transparent);
}

.form__note { margin: 12px 0 0; color: var(--muted2); font-size: 13px; }

.accent { color: var(--red); }

/* Footer */
.footer {
  border-top: 1px solid var(--stroke);
  padding: 30px 0;
  background: color-mix(in srgb, var(--bg) 92%, black);
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.6fr;
  gap: 22px;
  align-items: start;
}
.footer__logo { display: block; margin-bottom: 12px; }
.footer__links { display: grid; gap: 8px; }
.footer__meta { color: var(--muted2); }

/* Responsive */
@media (max-width: 980px) {
  .hero__inner { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav { display: none; }
  .hamburger { display: inline-block; }
  .hero { padding-top: 52px; }
  .panel__grid { grid-template-columns: 1fr; }
  .panel__item { border-right: none; }
  .cards { grid-template-columns: 1fr; }
  .checks { grid-template-columns: 1fr; }
  .step { grid-template-columns: 56px 1fr; }
}