/* ==========================================================================
   Zakupowicz - Main stylesheet
   ========================================================================== */

:root {
  --primary-green: #2E8B57;
  --secondary-green: #3CB371;
  --dark-green: #1E5C3A;
  --light-green: #90EE90;
  --lighter-green: #E8F5E9;
  --accent-gold: #FFD700;
  --white: #FFFFFF;
  --black: #333333;
  --gray: #5a5a5a;
  --light-gray: #f5f5f5;
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--light-gray);
  color: var(--black);
  font-family: 'Open Sans', sans-serif;
  line-height: 1.6;
}

/* Header */
header {
  background-color: var(--primary-green);
  color: var(--white);
  padding: 1rem;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: relative;
  z-index: 100;
}

.header-content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.date {
  font-size: 0.9rem;
  opacity: 0.95;
  font-weight: 400;
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.2rem);
  margin: 0;
  font-weight: 700;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
}

/* Navigation */
nav {
  background-color: var(--secondary-green);
  padding: 0.5rem 1rem;
  position: sticky;
  top: 0;
  z-index: 90;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.menu {
  display: flex;
  list-style: none;
  gap: 1rem;
  align-items: center;
  margin: 0;
  padding: 0;
}

.menu li {
  display: flex;
  align-items: center;
}

.menu li a {
  color: var(--white);
  text-decoration: none;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: var(--transition);
  font-size: 0.95rem;
}

.menu li a:hover,
.menu li a:focus {
  background-color: var(--dark-green);
  outline: none;
}

.hamburger {
  display: none;
  cursor: pointer;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.8rem;
  padding: 0.5rem;
  transition: var(--transition);
}

.hamburger:hover {
  transform: scale(1.1);
}

/* Dropdown submenu */
.menu .has-submenu {
  position: relative;
}

/* Trigger podmenu - wyglada identycznie jak link .menu li a */
.submenu-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: none;
  color: var(--white);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.6;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
}

.submenu-trigger:hover,
.submenu-trigger:focus,
.has-submenu.open > .submenu-trigger,
.has-submenu:hover > .submenu-trigger {
  background-color: var(--dark-green);
  outline: none;
}

.submenu-arrow {
  font-size: 0.7rem;
  transition: transform 0.2s ease;
  display: inline-block;
}

.has-submenu.open > .submenu-trigger .submenu-arrow,
.has-submenu:hover > .submenu-trigger .submenu-arrow {
  transform: rotate(180deg);
}

.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--secondary-green);
  list-style: none;
  min-width: 260px;
  padding: 0.5rem 0;
  margin: 0;
  border-radius: 0 0 6px 6px;
  box-shadow: 0 6px 14px rgba(0,0,0,0.18);
  display: none;
  flex-direction: column;
  gap: 0;
  z-index: 95;
}

.has-submenu:hover > .submenu,
.has-submenu:focus-within > .submenu,
.has-submenu.open > .submenu {
  display: flex;
}

.submenu li {
  list-style: none;
}

.submenu li a {
  display: block;
  padding: 0.55rem 1.1rem;
  border-radius: 0;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--white);
  text-decoration: none;
  transition: var(--transition);
}

.submenu li a:hover,
.submenu li a:focus {
  background-color: var(--dark-green);
  outline: none;
}

/* Main */
main {
  flex: 1;
  padding: 2rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* Product cards */
.products {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.product-card {
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

.product-image {
  height: 180px;
  background-color: var(--lighter-green);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 20px;
  transition: var(--transition);
}

.product-card:hover .product-image img {
  transform: scale(1.05);
}

.product-info {
  padding: 1.2rem;
  text-align: center;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.product-title {
  font-size: 1.1rem;
  margin: 0;
  font-weight: 600;
  color: var(--dark-green);
}

.nav-button {
  background-color: var(--dark-green);
  color: var(--white);
  border: none;
  padding: 0.6rem 1rem;
  border-radius: 4px;
  margin-top: auto;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
  text-decoration: none;
  text-align: center;
  font-size: 0.95rem;
}

.nav-button:hover,
.nav-button:focus {
  background-color: var(--primary-green);
  outline: none;
  box-shadow: 0 2px 8px rgba(46, 139, 87, 0.4);
}

/* About */
.about-section {
  background-color: var(--lighter-green);
  padding: 3rem 1rem;
  margin: 2rem -1rem 0;
}

.about-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.section-title {
  color: var(--primary-green);
  margin-bottom: 1.5rem;
  font-size: 1.8rem;
  font-weight: 700;
}

.about-section p {
  margin-bottom: 1.2rem;
  line-height: 1.7;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.about-features {
  list-style: none;
  padding: 0;
  margin: 2rem auto;
  max-width: 700px;
  text-align: left;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.2rem;
}

.about-features li {
  padding: 0.5rem 0;
  position: relative;
  padding-left: 2rem;
  display: flex;
  align-items: center;
}

.about-features li::before {
  content: "\2713";
  color: var(--primary-green);
  font-size: 1.2rem;
  font-weight: bold;
  position: absolute;
  left: 0;
}

/* Footer */
footer {
  background-color: var(--primary-green);
  color: var(--white);
  padding: 2rem 1rem;
  text-align: center;
  margin-top: auto;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.footer-links a {
  color: var(--white);
  text-decoration: none;
  transition: var(--transition);
  font-weight: 600;
  padding: 0.3rem 0;
  position: relative;
}

.footer-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-gold);
  transition: var(--transition);
}

.footer-links a:hover,
.footer-links a:focus {
  color: var(--accent-gold);
  outline: none;
}

.footer-links a:hover::after,
.footer-links a:focus::after {
  width: 100%;
}

.copyright {
  font-size: 0.9rem;
  opacity: 0.95;
}

/* Skip link (a11y) */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--dark-green);
  color: white;
  padding: 0.8rem;
  z-index: 100;
  transition: top 0.3s;
}

.skip-link:focus {
  top: 0;
}

/* Focus styles */
a:focus,
button:focus {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

/* Article / static pages */
.article {
  background: var(--white);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
  margin-bottom: 2rem;
}

.article h2 {
  color: var(--primary-green);
  margin: 1.5rem 0 0.8rem;
  font-size: 1.5rem;
}

.article h3 {
  color: var(--dark-green);
  margin: 1.2rem 0 0.6rem;
  font-size: 1.2rem;
}

.article p,
.article li {
  margin-bottom: 0.8rem;
}

.article ul,
.article ol {
  margin: 0.8rem 0 0.8rem 1.5rem;
}

.article table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}

.article th,
.article td {
  border: 1px solid #ddd;
  padding: 0.6rem;
  text-align: left;
  vertical-align: top;
}

.article th {
  background: var(--lighter-green);
  color: var(--dark-green);
  font-weight: 600;
}

.article a {
  color: var(--primary-green);
  font-weight: 600;
}

.last-update {
  color: var(--gray);
  font-size: 0.9rem;
  font-style: italic;
  margin-bottom: 1.5rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    align-items: stretch;
  }

  .menu {
    display: none;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem 0 0;
  }

  .menu.active {
    display: flex;
  }

  .hamburger {
    display: block;
    align-self: flex-end;
  }

  /* Mobile: submenu inline, nie pop-up */
  .menu .has-submenu {
    position: static;
  }

  .submenu-trigger {
    width: 100%;
    justify-content: space-between;
    text-align: left;
  }

  .submenu {
    position: static;
    box-shadow: none;
    background-color: rgba(0,0,0,0.15);
    min-width: 0;
    padding: 0.3rem 0 0.3rem 1.2rem;
    border-radius: 0;
  }

  .products {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }

  .footer-links {
    gap: 1.5rem;
  }

  .article {
    padding: 1.2rem;
  }
}

@media (max-width: 480px) {
  .products {
    grid-template-columns: 1fr;
  }

  .about-features {
    grid-template-columns: 1fr;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}