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

/* Smooth scrolling for anchor links */
html {
  scroll-behavior: smooth;
}

/* Her definerer vi variabler, som vi kan genbruge i hele CSS-filen.
Det gør det super nemt at ændre f.eks. farver eller skrifttyper. */
:root {
  /*Primære farver */
  --sort: #000; /* brødtekst og titler */
  --koksgrå: #1a1a1a; /* tekst på mørke baggrund */
  --lys-grå: #e5e5e5; /* sektioner, paneler */
  --hvid: #fff; /* primær baggrund */

  /* Accent farver */
  --rød: #c62828; /* Primær knapper og links */
  --grøn: #2e7d32; /* Hover knapper og links */
  --max-width: 1200px;
  --font-stack: "Roboto", "Franklin Gothic Medium", Tahoma, sans-serif;
}

/* hele sidens indhold*/
body {
  font-family: var(--font-stack);
  color: var(--sort);
  background-color: var(--hvid);
  line-height: 1.6;
  font-size: 16px;
  scroll-behavior: smooth;
}

/* Header og container til at centrere indholdet */
header {
  display: flex;
  background: var(--lys-grå);
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100; /* Sørger for, at headeren ligger ovenover alt andet indhold */
}

.container {
  display: flex;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Standard sektioner */
section {
  margin: 4rem auto;
  padding: 2rem;
  max-width: var(--max-width);
  border-left: 4px solid var(--rød);
}

/* Ensartede white-box sektioner */
section:not(.hero):not(.banner):not(.værktøjer):not(.about):not(
    .dokumentation-link
  ) {
  background: var(--hvid);
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}

/* Overskrifter */
section h1,
section h2 {
  border-bottom: 3px solid var(--rød);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
}

/* Navigation */
.navigation {
  display: flex;
  gap: 2rem;
}

.navigation a {
  color: var(--sort);
  font-weight: 500;
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
  transition: color 0.25s ease-in-out;
}

/* Hover underline */
.navigation a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 0%;
  height: 3px;
  background: var(--rød);
  transition: width 0.25s ease-in-out;
}

.navigation a:hover {
  color: var(--rød);
}

.navigation a:hover::after {
  width: 100%;
}

/* Active state */
.navigation a.active {
  color: var(--rød);
  font-weight: 600;
}

.navigation a.active::after {
  width: 100%;
}

.værktøjer {
  margin: 4rem auto;
  max-width: 1100px;
  padding: 0 2rem;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.tool-card {
  background: var(--lys-grå);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid #ddd;
}

.tool-card h3 {
  margin-bottom: 1rem;
}

.tool-list li {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
}

.tool-list img {
  width: 28px;
  height: 28px;
  filter: grayscale(1);
  transition: 0.25s;
}

.tool-list img:hover {
  filter: grayscale(0);
  transform: scale(1.1);
}

.logo {
  display: flex;
}

.logo a {
  text-decoration: none;
  color: var(--sort);
  font-size: 1.4rem;
  font-weight: 700;
}

.btn-primary {
  display: inline-block;
  background: var(--rød);
  padding: 0.8rem 1.8rem;
  border-radius: 4px;
  font-size: 18px;
  text-decoration: none;
  font-weight: 600;
  transition: 0.2s ease-in-out;
}

.btn-primary:hover {
  background: var(--grøn);
}

.btn-secondary {
  display: inline-block;
  background: var(--grøn);
  color: var(--hvid);
  padding: 0.8rem 1.8rem;
  border-radius: 4px;
  font-size: 18px;
  text-decoration: none;
  font-weight: 600;
  transition: 0.2s ease-in-out;
}

.btn-secondary:hover {
  background: var(--rød);
}

.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--lys-grå);
  overflow: hidden;
}

.banner {
  max-width: 800px;
  margin: 25px auto;
  text-align: center;
}

.banner img {
  width: 100%;
  max-width: 320px;
  height: auto;
  opacity: 0.8;
  border-radius: 50%;
  object-fit: cover;
  margin: 1rem auto 0;
  display: block;
}

/* Skriften */
h1 {
  font-size: 56px;
  font-weight: 700;
  margin-bottom: 1rem;
}

h2 {
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 1rem;
}

h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

p {
  font-size: 16px;
  margin-bottom: 1.5rem;
}

a {
  position: relative;
}

a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--rød);
  transition: width 0.3s;
}

a:hover::after {
  width: 100%;
}

/* Video sektion */
.video {
  position: relative;
  text-align: center;
  padding: 2rem;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
}

.video video {
  width: 85%;
  max-width: 650px;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
  display: block;
}

/* Når videoen afspilles */
.video video:fullscreen {
  width: 100%;
  max-width: none;
}

.video .btn-primary {
  margin-top: 1rem;
}

.card-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 6px;
}

/* === Mobiloptimering === */
@media (max-width: 768px) {
  h1 {
    font-size: 40px;
  }

  h2 {
    font-size: 28px;
  }

  .banner img {
    max-width: 250px;
  }

  .video {
    padding: 1.5rem 1rem;
  }

  .video video {
    width: 90%;
    max-width: 100%;
  }
}

@media (max-width: 600px) {
  header {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }

  .navigation {
    gap: 1.2rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  .navigation a {
    font-size: 0.95rem;
  }

  .banner img {
    max-width: 200px;
  }

  .video video {
    width: 95%;
  }

  h1 {
    font-size: 32px;
  }

  h2 {
    font-size: 24px;
  }
}