@import url("https://fonts.googleapis.com/css2?family=Roboto+Condensed:wght@400;700&display=swap");

:root {
  --background-color: #e9ecef;
  --text-color: #212529;
  --header-bg: #ffffff;
  --header-text: #212529;
  --category-box-bg-start: #ffffff;
  --category-box-bg-end: #ffffff;
  --category-box-border: #ced4da;
  --category-box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  --category-title-bg: #ffffff;
  --category-title-color: #212529;
  --category-title-border: #ced4da;
  --category-title-shadow: rgba(0, 0, 0, 0.05);
  --catalogo-bg: #ffffff;
  --catalogo-border: #dee2e6;
  --catalogo-shadow: rgba(0, 0, 0, 0.1);
  --catalogo-title-color: #212529;
  --catalogo-text-color: #495057;
  --link-bg: #007bff;
  --link-color: white;
  --link-hover-bg: #0056b3;
  --footer-color: #6c757d;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background-color: #121212;
    --text-color: #e0e0e0;
    --header-bg: #1f1f1f;
    --header-text: #ffffff;
    --category-box-bg-start: #1e1e1e;
    --category-box-bg-end: #242424;
    --category-box-border: #333;
    --category-box-shadow: rgba(0, 0, 0, 0.3);
    --category-title-bg: #1a1a1a;
    --category-title-color: #f0f0f0;
    --category-title-border: #333;
    --category-title-shadow: rgba(0, 0, 0, 0.2);
    --catalogo-bg: #1e1e1e;
    --catalogo-border: #333;
    --catalogo-shadow: rgba(0, 0, 0, 0.2);
    --catalogo-title-color: #f0f0f0;
    --catalogo-text-color: #c0c0c0;
    --link-bg: #007bff;
    --link-color: white;
    --link-hover-bg: #0056b3;
    --footer-color: #a0a0a0;
  }
}

body {
  font-family: "Roboto Condensed", sans-serif;
  background: var(--background-color);
  margin: 0;
  padding: 0;
  color: var(--text-color);
}

header {
  background: var(--header-bg);
  color: var(--header-text);
  padding: 20px 30px;
  margin: 20px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  box-shadow: var(--category-box-shadow);
  border: 1px solid var(--category-box-border);
}

header img {
  height: 40px;
  width: 40px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid var(--header-text);
}

h1 {
  margin: 0;
  font-size: 28px;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}

.cataloghi {
  max-width: 1000px;
  margin: 40px auto;
  padding: 0 20px;
}

/* CATEGORIE */
.categoria-box {
  background: linear-gradient(to right, var(--category-box-bg-start), var(--category-box-bg-end));
  border: 1px solid var(--category-box-border);
  border-radius: 14px;
  margin-bottom: 30px;
  box-shadow: var(--category-box-shadow);
  transition: all 0.2s ease-in-out;
}

/* Titolo categoria: sticky + interattivo */
.categoria-titolo {
  font-size: 26px;
  margin: 0;
  color: var(--category-title-color);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  cursor: pointer;
  background: var(--category-title-bg);
  position: sticky;
  top: 0;
  z-index: 1;
  border-radius: 14px 14px 0 0;
  border-bottom: 1px solid var(--category-title-border);
  box-shadow: var(--category-title-shadow);
}

.categoria-titolo::before {
  content: "📁";
  font-size: 24px;
}

/* Contenitore dei cataloghi: animazione apertura/chiusura */
.cataloghi-interni {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.5s ease, opacity 0.4s ease;
  padding: 0 24px;
}

.cataloghi-interni.aperta {
  max-height: 2000px; /* abbastanza per contenere tutto */
  opacity: 1;
  padding-bottom: 20px;
}

.cataloghi-interni .catalogo {
  margin-top: 20px;
}

/* CATALOGO */
.catalogo {
  background: var(--catalogo-bg);
  padding: 20px;
  margin-bottom: 24px;
  border-radius: 12px;
  box-shadow: var(--catalogo-shadow);
  border: 1px solid var(--catalogo-border);
  transition: transform 0.2s ease;
  display: flex;
  align-items: center;
  gap: 20px;
}

.catalogo:hover {
  transform: scale(1.01);
}

.catalogo img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid var(--catalogo-border);
  flex-shrink: 0;
}

.catalogo h2,
.catalogo h3 {
  margin: 0 0 8px;
  font-size: 20px;
  color: var(--catalogo-title-color);
}

.catalogo p {
  margin: 0 0 12px;
  line-height: 1.5;
  color: var(--catalogo-text-color);
  font-size: 15px;
}

.catalogo a {
  display: inline-block;
  padding: 8px 16px;
  background-color: var(--link-bg);
  color: var(--link-color);
  text-decoration: none;
  border-radius: 4px;
  font-weight: bold;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 13px;
}

.catalogo a:hover {
  background-color: var(--link-hover-bg);
}

/* FOOTER */
footer {
  text-align: center;
  margin-top: 60px;
  padding: 20px;
  font-size: 14px;
  color: var(--footer-color);
}