/* PROFESSIONAL THEME */
@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;500&family=Inter:wght@400;500;600&display=swap');
:root {
  /* Kolory */
  --bg-body: #f5f6f7;
  --bg-surface: #ffffff;
  --text-main: #1e1e1e;
  --text-muted: #6b7280;
  --accent: #d50000;
  --accent-hover: #a20000;
  --border-radius: 4px;
  --shadow: 0 2px 6px rgba(0,0,0,.08);
  /* Typografia */
  --font-header: 'Oswald', sans-serif;
  --font-body: 'Inter', sans-serif;
  /* Spacing */
  --section-pad: clamp(2rem, 4vw, 4rem);
  --container-max: 1200px;
}

*,
*::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;
}

h1, h2, h3, h4 {
  font-family: var(--font-header);
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: .5em;
}
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 1rem;
}

/* ---------- HEADER ---------- */
.site-header {
  background: var(--bg-surface);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}
.logo {
  font-family: var(--font-header);
  font-size: 1.5rem;
  color: var(--text-main);
  letter-spacing: .5px;
}
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}
.main-nav a {
  font-weight: 500;
  color: var(--text-main);
  transition: color .2s;
}
.main-nav a:hover { color: var(--accent); }

/* 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;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-block;
  padding: .75rem 1.5rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  background: var(--accent);
  color: #fff;
  transition: background .2s;
}
.btn:hover { background: var(--accent-hover); color: #fff; }

/* ---------- SECTIONS ---------- */
section {
  padding-block: var(--section-pad);
}
.bg-surface { background: var(--bg-surface); }

/* ---------- GRIDS ---------- */
.offers-grid,
.partners-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 900px) {
  .offers-grid,
  .partners-grid { grid-template-columns: 1fr; }
}

/* ---------- CARDS ---------- */
.job-card,
.partner-link {
  background: var(--bg-surface);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  transition: transform .2s, box-shadow .2s;
}
.job-card:hover,
.partner-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,.1);
}
.job-card h3 { margin-bottom: .75rem; }
.job-card p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* ---------- PARTNERS – SHOW MORE ---------- */
.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-container {
  text-align: center;
  margin-top: 1.5rem;
}
.show-more-label {
  cursor: pointer;
  font-weight: 600;
  color: var(--accent);
}

/* ---------- ACCORDION (FAQ) ---------- */
details {
  background: var(--bg-surface);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.5rem;
  margin-bottom: 1rem;
}
summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
summary::after {
  content: '+';
  font-size: 1.25rem;
  transition: transform .2s;
}
details[open] summary::after { transform: rotate(45deg); }
details p {
  margin-top: 1rem;
  color: var(--text-muted);
}

/* ---------- FOOTER ---------- */
.site-footer {
  background: #111;
  color: #e5e5e5;
  padding-block: 3rem 2rem;
}
.footer-content {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.footer-section h4 {
  margin-bottom: 1rem;
  color: #fff;
}
.footer-section a { color: #ccc; }
.footer-section a:hover { color: var(--accent); }

/* ---------- RESPONSIVE NAV ---------- */
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    box-shadow: var(--shadow);
    transform: translateY(-150%);
    transition: transform .3s;
  }
  .main-nav ul {
    flex-direction: column;
    padding: 1.5rem 1rem;
  }
  #menu-toggle:checked ~ .main-nav { transform: translateY(0); }
}