* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family:
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto;
  background: #f4f6fb;
  color: #1f2937;
}
/* HEADER */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  background: white;
  border-bottom: 1px solid #e5e7eb;
}
.logo {
  font-weight: 700;
  font-size: 20px;
  text-decoration: none;
  color: inherit;
}
.logo:hover {
  opacity: 0.8;
}
nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #374151;
  font-weight: 500;
}
nav a:hover {
  color: #2563eb;
}
/* HERO */
.hero {
  text-align: center;
  padding: 60px 20px;
}
.hero h1 {
  font-size: 34px;
  margin-bottom: 10px;
}
.hero p {
  color: #6b7280;
}
/* GRID */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  max-width: 900px;
  margin: auto;
  padding: 40px 20px;
}
/* KÁRTYA FIX */
.card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%; /* fontos */
  background: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.06);
  min-height: 220px;
}
/* GOMB ALUL */
.card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: auto;
  padding: 10px 16px;
  background: #2563eb;
  color: white;
  border-radius: 6px;
  text-decoration: none;
  font-size: 14px;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.1);
}
/* ICON */
.icon {
  font-size: 40px;
  margin-bottom: 15px;
}
/* CARD BUTTON LINK */
.card a {
  display: inline-block;
  margin-top: 15px;
  padding: 10px 16px;
  background: #2563eb;
  color: white;
  border-radius: 6px;
  text-decoration: none;
  font-size: 14px;
}
.card a:hover {
  background: #1d4ed8;
}
/* CALCULATOR GRID */
.calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}
.calc-grid label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
}
/* INPUT */
input {
  width: 100%;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #d1d5db;
  font-size: 14px;
}
input:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}
/* BUTTON */
button {
  display: block;
  margin: 20px auto;
  background: #2563eb;
  color: white;
  border: none;
  padding: 12px 25px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s;
  max-width: 300px;
  width: 100%;
}
button:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
}
button:active {
  transform: translateY(0);
}
/* RESULT BOX */
.result-box {
  margin-top: 25px;
  padding: 20px;
  background: #f0f6ff;
  border: 1px solid #dbeafe;
  border-radius: 10px;
  text-align: center;
  transition: 0.3s;
}
.result-box:hover {
  transform: scale(1.02);
}
.result-box p:first-child {
  font-size: 14px;
  color: #6b7280;
}
#result-value {
  font-size: 28px;
  font-weight: 700;
  color: #2563eb;
  margin-top: 5px;
}
/* ARTICLE TEXT */
.article {
  max-width: 700px;
  margin: 40px auto;
  color: #4b5563;
}
/* POPULAR KEYWORD BLOCK */
.popular {
  max-width: 900px;
  margin: 40px auto;
  padding: 20px;
}
.popular h2 {
  margin-bottom: 15px;
}
.popular-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.popular-grid a {
  background: white;
  padding: 8px 14px;
  border-radius: 20px;
  text-decoration: none;
  color: #2563eb;
  font-size: 14px;
  border: 1px solid #e5e7eb;
}
.popular-grid a:hover {
  background: #2563eb;
  color: white;
}
/* FOOTER */
footer {
  text-align: center;
  padding: 30px;
  color: #6b7280;
}
#cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: #1f2937;
  color: white;
  padding: 15px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
}
#cookie-banner p {
  margin: 0;
  font-size: 14px;
}
#cookie-banner button {
  background: #2563eb;
  color: white;
  border: none;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
}
.back-btn {
  background: none;
  border: none;
  font-size: 14px;
  color: #2563eb;
  cursor: pointer;
  margin-right: 15px;
}
.back-btn:hover {
  text-decoration: underline;
}
/* hamburger gomb */
.menu-toggle {
  display: none;
  font-size: 24px;
  background: none;
  border: none;
  cursor: pointer;
  width: 60px;
  height: 60px;
}

/* mobil */
@media (max-width: 768px) {
  nav {
    display: none;
    flex-direction: column;
    background: rgb(255, 255, 255);
    position: absolute;
    top: 70px;
    right: 20px;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  }

  nav a {
    margin: 10px 0;
  }

  nav.active {
    display: flex;
  }

  .menu-toggle {
    display: block;
    background: #456cd8;
  }
}
.section-title {
  text-align: center;
  margin-bottom: 20px;
}
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}
@media (max-width: 768px) {
  .menu-toggle {
    font-size: 20px;
    padding: 5px 8px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}
.menu-toggle {
  border-radius: 8px;
  transition: 0.2s;
}

.menu-toggle:hover {
  background: #f3f4f6;
}