:root {
  --bg: #0f1b24;
  --bg-2: #142432;
  --card: #1b2f3d;
  --text: #e9f1f7;
  --muted: #b8c7d6;
  --accent: #ffb347;
  --accent-2: #55d6be;
  --danger: #ff6b6b;
  --grid: rgba(255, 255, 255, 0.08);
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

html {
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Sora", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 700px at 10% 10%, #1f3a4d 0%, var(--bg) 50%),
    radial-gradient(900px 600px at 90% 20%, #2d4f63 0%, transparent 55%),
    linear-gradient(160deg, var(--bg) 0%, #0b131a 100%);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(15, 27, 36, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--grid);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 12px;
}

.brand {
  --brand-row-height: 56px;
  --logo-slot: 128px;
  --logo-size: 164px;
  position: relative;
  display: flex;
  align-items: center;
  height: var(--brand-row-height);
  padding-left: var(--logo-slot);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.5px;
}

.brand-logo {
  position: absolute;
  left: -30px;
  top: 50%;
  transform: translateY(-50%);
  width: var(--logo-size);
  height: var(--logo-size);
  object-fit: contain;
  display: block;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.02;
  align-items: flex-start;
}

.brand-title {
  font-weight: 700;
  font-size: 1.42rem;
  letter-spacing: 0.2px;
}

.brand-subtitle {
  font-size: 0.76rem;
  color: var(--muted);
  letter-spacing: 0.6px;
  text-transform: lowercase;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
  color: var(--muted);
  align-items: center;
}

.nav-links a {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
}

.nav-group {
  position: relative;
}

.nav-group-title {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
  transition: 0.2s ease;
}

.nav-group-title::after {
  content: "▾";
  font-size: 12px;
  opacity: 0.9;
}

.nav-group-title:hover,
.nav-group.open .nav-group-title {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
}

.nav-submenu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 220px;
  padding: 8px;
  display: none;
  flex-direction: column;
  gap: 6px;
  background: var(--bg-2);
  border: 1px solid var(--grid);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.nav-group.open .nav-submenu,
.nav-group:focus-within .nav-submenu {
  display: flex;
}

.nav-submenu a {
  border-radius: 8px;
}

.nav-dropdown {
  display: none;
  background: var(--bg-2);
  color: var(--text);
  border: 1px solid var(--grid);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 14px;
  min-width: 190px;
}

.hero {
  padding: 72px 0 48px;
  display: grid;
  gap: 32px;
  align-items: center;
}

.hero h1 {
  font-family: "Playfair Display", "Times New Roman", serif;
  font-size: clamp(2.4rem, 2vw + 2rem, 4rem);
  margin: 0 0 12px;
}

.hero p {
  color: var(--muted);
  max-width: 720px;
  line-height: 1.6;
}

.hero .cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  background: var(--accent);
  color: #1c1408;
  border-radius: 999px;
  font-weight: 600;
  box-shadow: 0 12px 24px rgba(255, 179, 71, 0.35);
}

.section {
  padding: 36px 0 60px;
}

#elorejelzes {
  scroll-margin-top: 84px;
}

#felmelegedes {
  scroll-margin-top: 84px;
}

.grid {
  display: grid;
  gap: 18px;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: var(--card);
  border: 1px solid var(--grid);
  border-radius: 18px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.card .value {
  font-size: 28px;
  font-weight: 700;
}

.card .muted {
  color: var(--muted);
  font-size: 13px;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.control {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}

.control select {
  background: var(--bg-2);
  color: var(--text);
  border: 1px solid var(--grid);
  border-radius: 10px;
  padding: 10px 12px;
  min-width: 160px;
  width: 100%;
}

.control input {
  background: var(--bg-2);
  color: var(--text);
  border: 1px solid var(--grid);
  border-radius: 10px;
  padding: 10px 12px;
  min-width: 160px;
  width: 100%;
}

.compare {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
}

.compare .delta {
  color: var(--accent-2);
  font-weight: 600;
}

.chart-wrap {
  background: var(--card);
  border: 1px solid var(--grid);
  border-radius: 18px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend .swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.map-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.map-box {
  min-height: 360px;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--grid);
  background: #10202b;
}

.info-panel {
  background: var(--card);
  border-radius: 18px;
  padding: 18px;
  border: 1px solid var(--grid);
}

.footer {
  padding: 32px 0 48px;
  color: var(--muted);
  font-size: 13px;
}

.fade-up {
  animation: fadeUp 0.7s ease both;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.form-actions {
  margin-top: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  background: var(--accent);
  color: #1c1408;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(255, 179, 71, 0.25);
}

.btn:hover {
  filter: brightness(1.05);
}

.stack {
  display: grid;
  gap: 10px;
}

.pill {
  padding: 12px 14px;
  border-radius: 12px;
  background: #162833;
  border: 1px solid var(--grid);
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 720px) {
  .container {
    width: min(1200px, 94vw);
  }

  .nav-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
  }

  .nav-dropdown {
    display: inline-block;
  }

  .nav-links {
    display: none;
  }

  .brand {
    --brand-row-height: 48px;
    --logo-slot: 88px;
    --logo-size: 120px;
    font-size: 1rem;
  }

  .brand-title {
    font-size: 1.2rem;
  }

  .brand-subtitle {
    font-size: 0.65rem;
  }

  .hero {
    padding-top: 48px;
  }

  .hero h1 {
    font-size: clamp(1.9rem, 5vw + 0.8rem, 2.6rem);
  }

  .section {
    padding: 26px 0 42px;
  }

  .card,
  .chart-wrap,
  .info-panel {
    padding: 14px;
    border-radius: 14px;
  }

  .controls {
    flex-direction: column;
    gap: 10px;
  }

  .control {
    width: 100%;
  }

  .control select,
  .control input {
    min-width: 0;
  }

  .map-panel {
    grid-template-columns: 1fr;
  }

  .map-box {
    min-height: 300px;
  }

  .legend {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .value {
    font-size: 24px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 420px) {
  .map-box {
    min-height: 250px;
  }

  .hero h1 {
    font-size: 1.85rem;
  }
}