/* PROFESSIONAL THEME */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&family=Manrope:wght@600;800&display=swap');

:root {
  /* Kolory */
  --bg-body: #f5f7fa;
  --bg-surface: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --accent: #0ea5e9;
  --accent-hover: #0284c7;

  /* Typografia */
  --font-header: 'Manrope', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* UI */
  --radius: 10px;
  --shadow: 0 4px 12px rgba(15,23,42,.08);
}

/* Reset */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Typografia */
h1, h2, h3 { font-family: var(--font-header); font-weight: 800; }
h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.125rem, 3vw, 1.5rem); }
p  { font-size: 1rem; color: var(--text-muted); }

a { color: inherit; text-decoration: none; }

/* Layout helpers */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Nagłówek */
.site-header {
  background: var(--bg-surface);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}
.logo {
  font-family: var(--font-header);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--accent);
}

/* Nawigacja – desktop */
.main-nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.main-nav a {
  font-weight: 500;
  color: var(--text-main);
  position: relative;
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width .25s;
}
.main-nav a:hover::after,
.main-nav a:focus::after { width: 100%; }

/* Hamburger – mobile */
#menu-toggle { display: none; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}
.hamburger span {
  width: 24px; height: 3px;
  background: var(--text-main);
  border-radius: 2px;
  transition: .3s;
}
#menu-toggle:checked ~ .main-nav { transform: translateX(0); }
#menu-toggle:checked + .hamburger span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
#menu-toggle:checked + .hamburger span:nth-child(2) { opacity: 0; }
#menu-toggle:checked + .hamburger span:nth-child(3) { transform: rotate(-45deg) translate(7px,-6px); }

/* Gridy */
.offers-grid,
.partners-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 768px) {
  .offers-grid,
  .partners-grid { grid-template-columns: 1fr; }

  .hamburger { display: flex; }
  .main-nav {
    position: fixed;
    inset: 0 0 0 40%;
    background: var(--bg-surface);
    padding: 5rem 2rem;
    transform: translateX(100%);
    transition: transform .3s;
  }
  .main-nav ul { flex-direction: column; gap: 1.5rem; }
}

/* Karty */
.job-card,
.partner-link {
  background: var(--bg-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  transition: transform .2s, box-shadow .2s;
}
.job-card:hover,
.partner-link:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(15,23,42,.1);
}

/* Przyciski */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: .75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 500;
  transition: background .2s;
}
.btn:hover,
.btn:focus { background: var(--accent-hover); }

/* Stopka */
.site-footer {
  background: var(--text-main);
  color: var(--bg-body);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}
.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}
.footer-section h4 {
  font-family: var(--font-header);
  margin-bottom: .75rem;
}
.footer-section a { color: var(--text-muted); }
.footer-section a:hover { color: var(--accent); }

/* Akordeon FAQ */
details {
  background: var(--bg-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
}
summary {
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
summary::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--accent);
  transition: transform .2s;
}
details[open] summary::after { transform: rotate(45deg); }
details > *:not(summary) { margin-top: .75rem; }

/* Partnerzy – pokaż więcej */
.partners-wrapper .partners-hidden { display: none; }
.partners-wrapper .show-more-checkbox:checked ~ .partners-hidden { display: grid; }
.partners-wrapper .show-more-checkbox:checked ~ .show-more-container { display: none; }
.show-more-checkbox { display: none; }
.show-more-container { text-align: center; margin-top: 1.5rem; }

/* Subtelna dekoracja – radial dots */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 20% 30%, rgba(14,165,233,.03) 0, transparent 25%),
              radial-gradient(circle at 80% 70%, rgba(14,165,233,.03) 0, transparent 25%);
  pointer-events: none;
  z-index: -1;
}