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

:root {
  /* Kolory */
  --bg-body: #f7f9fb;
  --bg-surface: #ffffff;
  --text-main: #1c1e21;
  --text-muted: #6b7280;
  --accent: #2a9d8f;
  --accent-hover: #21867a;

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

  /* Cienie */
  --shadow: 0 4px 12px -2px rgba(0, 0, 0, .06), 0 2px 4px -2px rgba(0, 0, 0, .04);
}

/* Global */
*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-main);
  background: var(--bg-body);
}

h1, h2, h3 {
  font-family: var(--font-header);
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 .4em;
}

h1 { font-size: clamp(2rem, 3vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 2.2vw, 2rem); }
h3 { font-size: clamp(1.125rem, 1.6vw, 1.375rem); }

p { margin: 0 0 1em; }

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

/* Layout helpers */
.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.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: 16px 0;
}

.logo {
  font-family: var(--font-header);
  font-weight: 700;
  font-size: 1.375rem;
  color: var(--text-main);
}

/* Desktop nav */
.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 28px;
}

.main-nav a {
  font-weight: 500;
  color: var(--text-main);
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform .25s ease;
}

.main-nav a:hover::after { transform: scaleX(1); }

/* Mobile menu (checkbox hack) */
#menu-toggle { display: none; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-main);
  transition: transform .3s ease;
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .main-nav {
    position: fixed;
    inset: 60px 0 0;
    background: var(--bg-surface);
    transform: translateX(100%);
    transition: transform .3s ease;
    padding: 32px 20px;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 24px;
  }
  #menu-toggle:checked ~ .main-nav { transform: translateX(0); }
  #menu-toggle:checked + .hamburger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  #menu-toggle:checked + .hamburger span:nth-child(2) { opacity: 0; }
  #menu-toggle:checked + .hamburger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  font-weight: 600;
  font-size: 1rem;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  transition: background .25s ease;
}

.btn:hover { background: var(--accent-hover); color: #fff; }

/* Cards */
.job-card,
.partner-link {
  background: var(--bg-surface);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 24px;
  transition: box-shadow .25s ease;
}

.job-card:hover,
.partner-link:hover { box-shadow: 0 6px 20px -2px rgba(0, 0, 0, .08); }

/* Grids */
.offers-grid,
.partners-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(3, 1fr);
}

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

@media (max-width: 600px) {
  .offers-grid,
  .partners-grid { grid-template-columns: 1fr; }
}

/* Partners show-more */
.partners-hidden { display: none; }
.show-more-checkbox { display: none; }
.show-more-checkbox:checked ~ .partners-hidden { display: grid; }
.show-more-checkbox:checked ~ .show-more-container { display: none; }

/* FAQ accordion */
details {
  background: var(--bg-surface);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 16px;
}

summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text-main);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

summary::after {
  content: '+';
  font-size: 1.25rem;
  transition: transform .25s ease;
}

details[open] summary::after { transform: rotate(45deg); }

details > *:not(summary) {
  margin-top: 12px;
  color: var(--text-muted);
}

/* Footer */
.site-footer {
  background: var(--text-main);
  color: var(--bg-surface);
  padding: 48px 0 24px;
  margin-top: 80px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 40px;
}

.footer-section h4 {
  font-family: var(--font-header);
  font-size: 1.125rem;
  margin-bottom: 12px;
}

.footer-section a {
  color: #cbd5e1;
  font-size: .9375rem;
}

.footer-section a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid #334155;
  margin-top: 40px;
  padding-top: 24px;
  text-align: center;
  font-size: .875rem;
  color: #94a3b8;
}