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

:root {
  /* Kolory */
  --bg-body: #f5f7fa;
  --bg-surface: #ffffff;
  --text-main: #111827;
  --text-muted: #6b7280;
  --accent: #ff5a00;
  --accent-hover: #e64a00;
  --border-radius: 6px;
  --shadow: 0 2px 4px rgba(0,0,0,.05);
  --shadow-hover: 0 4px 12px rgba(0,0,0,.08);
  --max-width: 1200px;
  --gap: 24px;

  /* Typografia */
  --font-header: 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'Roboto Mono', monospace;
  --fs-base: clamp(.9375rem, .9rem + .18vw, 1rem);
  --fs-h1: clamp(1.75rem, 1.5rem + 1.1vw, 2.5rem);
  --fs-h2: clamp(1.375rem, 1.2rem + .8vw, 2rem);
  --fs-h3: clamp(1.125rem, 1rem + .5vw, 1.375rem);
  --lh: 1.6;
}

/* Global Reset & Base */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh);
  color: var(--text-main);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* Layout Helpers */
.wrapper {
  width: min(var(--max-width), 100% - 2rem);
  margin-inline: auto;
}

/* 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: .75rem 0;
}
.logo {
  font-family: var(--font-header);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--text-main);
  letter-spacing: -.02em;
}
.main-nav ul {
  display: flex;
  gap: 1.5rem;
}
.main-nav a {
  font-weight: 500;
  color: var(--text-muted);
  transition: color .2s;
}
.main-nav a:hover,
.main-nav a:focus { color: var(--accent); }

/* 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 .25s;
}
#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); }

/* Footer */
.site-footer {
  background: var(--text-main);
  color: #e5e7eb;
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}
.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}
.footer-section h4 {
  font-size: var(--fs-h3);
  margin-bottom: .75rem;
  color: #fff;
}
.footer-section a {
  color: #9ca3af;
  transition: color .2s;
}
.footer-section a:hover { color: var(--accent); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .6em 1.4em;
  font-weight: 500;
  border-radius: var(--border-radius);
  background: var(--accent);
  color: #fff;
  transition: background .2s, box-shadow .2s;
}
.btn:hover,
.btn:focus { background: var(--accent-hover); box-shadow: var(--shadow-hover); }

/* Cards */
.job-card {
  background: var(--bg-surface);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  transition: box-shadow .25s;
}
.job-card:hover { box-shadow: var(--shadow-hover); }
.job-card h3 {
  font-size: var(--fs-h3);
  margin-bottom: .5rem;
}
.job-card .meta {
  font-size: .875rem;
  color: var(--text-muted);
  margin-bottom: .75rem;
}

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

/* Partner Links */
.partner-link {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: 1rem;
  background: var(--bg-surface);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: box-shadow .25s;
}
.partner-link:hover { box-shadow: var(--shadow-hover); }

/* Subtle Background Pattern */
.section-pattern {
  position: relative;
}
.section-pattern::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(0,0,0,.04) 1px, transparent 0);
  background-size: 24px 24px;
  pointer-events: none;
  z-index: 0;
}
.section-pattern > * { position: relative; z-index: 1; }

/* FAQ Accordion */
details {
  background: var(--bg-surface);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 1rem;
}
summary {
  font-weight: 600;
  cursor: pointer;
  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: 1rem;
  padding-top: 1rem;
  border-top: 1px solid #e5e7eb;
}

/* Partners Show-More (Checkbox Hack) */
.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; }

/* Mobile-only tweaks */
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .main-nav {
    position: fixed;
    inset: 0 0 0 30%;
    background: var(--bg-surface);
    transform: translateX(100%);
    transition: transform .3s;
    padding: 5rem 2rem;
    box-shadow: var(--shadow-hover);
  }
  .main-nav ul {
    flex-direction: column;
    gap: 1.25rem;
  }
}