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

:root {
  /* Kolory */
  --bg-body: #f5f7fa;
  --bg-surface: #ffffff;
  --text-main: #111827;
  --text-muted: #6b7280;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;

  /* Czcionki */
  --font-header: 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Wymiary */
  --radius: 6px;
  --shadow: 0 4px 12px rgba(0,0,0,.05);
  --max-width: 1200px;
  --gap: 1.5rem;
}

/* Reset i bazowe style */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-main);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
}

/* Hierarchia typografii */
h1, h2, h3, h4, h5, h6 { font-family: var(--font-header); font-weight: 700; line-height: 1.2; }
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); }
p { margin-bottom: 1rem; }

/* Kontenery */
.container { width: 90%; max-width: var(--max-width); margin-inline: auto; }

/* Subtelne tło kropek */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, var(--accent) 1px, transparent 0);
  background-size: 24px 24px;
  opacity: .01;
  pointer-events: none;
  z-index: -1;
}

/* ---------- HEADER ---------- */
.site-header {
  background: var(--bg-surface);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}
.utility-bar {
  font-size: .75rem;
  background: #eef2f6;
  color: var(--text-muted);
  padding: .25rem 0;
}
.utility-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .75rem 0;
}
.logo {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--accent);
  text-decoration: none;
}
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}
.main-nav a {
  text-decoration: none;
  color: var(--text-main);
  font-weight: 500;
  transition: color .2s;
}
.main-nav a:hover { color: var(--accent); }

/* CTA przyciski w headerze */
.header-actions { display: flex; gap: .75rem; }
.btn {
  display: inline-block;
  padding: .5rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 500;
  text-decoration: none;
  transition: background .2s, color .2s;
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-secondary:hover {
  background: var(--accent);
  color: #fff;
}

/* ---------- MOBILE MENU (checkbox hack) ---------- */
#menu-toggle { display: none; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-main);
  transition: transform .3s;
}
@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;
    padding: 1rem 0;
  }
  .main-nav ul { flex-direction: column; padding: 0 1rem; }
  #menu-toggle:checked ~ .main-nav { transform: translateY(0); }
}

/* ---------- MAIN SECTIONS ---------- */
section { padding: 3rem 0; }
.bg-surface { background: var(--bg-surface); }

/* ---------- JOB CARD ---------- */
.job-card {
  background: var(--bg-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.job-card h3 { margin-bottom: .25rem; }
.job-card .meta {
  font-size: .875rem;
  color: var(--text-muted);
  display: flex;
  gap: 1rem;
}
.job-card .btn { align-self: flex-start; }

/* ---------- 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: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .offers-grid,
  .partners-grid { grid-template-columns: 1fr; }
}

/* ---------- PARTNER LINK ---------- */
.partner-link {
  display: block;
  background: var(--bg-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem 1rem;
  text-align: center;
  text-decoration: none;
  color: var(--text-main);
  transition: transform .2s, box-shadow .2s;
}
.partner-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0,0,0,.08);
}
.partner-link strong { display: block; margin-bottom: .25rem; }

/* ---------- SHOW MORE PARTNERS (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; }
.show-more-container { text-align: center; margin-top: 1.5rem; }

/* ---------- CARD-STACK TIMELINE ---------- */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.timeline-item {
  background: var(--bg-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
  max-width: 720px;
  position: relative;
  transition: transform .3s;
}
.timeline-item:nth-child(odd) { transform: translateX(-1rem); }
.timeline-item:nth-child(even) { transform: translateX(1rem); }
@media (max-width: 600px) {
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) { transform: none; }
}

/* ---------- FAQ ACCORDION ---------- */
details {
  background: var(--bg-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.5rem;
  cursor: pointer;
}
summary {
  font-weight: 500;
  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 > *:not(summary) { margin-top: 1rem; }

/* ---------- FOOTER ---------- */
.site-footer {
  background: #0f172a;
  color: #cbd5e1;
  font-size: .875rem;
  padding: 2.5rem 0 1.5rem;
}
.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}
.footer-section h4 {
  font-size: 1rem;
  margin-bottom: .75rem;
  color: #fff;
}
.footer-section a {
  color: #94a3b8;
  text-decoration: none;
  transition: color .2s;
}
.footer-section a:hover { color: var(--accent); }
.footer-bottom {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid #1e293b;
  text-align: center;
  color: #64748b;
}