:root {
  --background-color: #ffffff;
  --text-color: #000000;
  --primary-color: #2ecc71;
  --input-bg: #ffffff;
  --input-text: #000000;
}

.dark-theme {
  --background-color: #000000;
  --text-color: #ffffff;
  --primary-color: #27ae60;
  --input-bg: #444444;
  --input-text: #ffffff;
}

body {
  font-family: Arial, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  margin: 0;
  padding: 20px;
  min-height: 100vh;
  transition: background-color 0.3s, color 0.3s;
}

.container {
  max-width: 600px;
  margin: 0 auto;
}

/* Stile per input, select e button in tema scuro */
input, select, button {
  background-color: var(--input-bg);
  color: var(--input-text);
  border: 1px solid var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

select option {
  background-color: var(--input-bg);
  color: var(--input-text);
}

/* Header Controls */
.header-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.language-select select {
  padding: 5px;
  font-size: 1rem;
}

.theme-toggle {
  font-size: 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-color);
  transition: color 0.3s;
}

/* Titoli */
h1, h2 {
  text-align: center;
  margin: 10px 0;
  color: var(--text-color);
}

#subtitle.centered {
  font-size: 1rem;
  font-weight: normal;
  color: var(--text-color);
}

/* Logo */
#logo {
  display: block;
  margin: 0 auto 20px;
  max-width: 350px;
  height: auto;
  filter: invert(0%);
  transition: filter 0.3s;
}

.dark-theme #logo {
  filter: invert(100%);
}

.visit-counter {
  position: fixed;
  bottom: 10px;
  right: 10px;
  padding: 5px 10px;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 5px;
  font-size: 0.9em;
  color: #666;
}

.dark-theme .visit-counter {
  background: rgba(255, 255, 255, 0.1);
  color: #ccc;
}

/* Control Boxes */
.control-box {
  background: var(--input-bg);
  padding: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  margin-bottom: 15px;
  transition: background-color 0.3s, color 0.3s;
}

label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  color: var(--text-color);
}

input[type="number"],
input[type="range"],
select {
  width: 100%;
  padding: 8px;
  margin-bottom: 10px;
  font-size: 1rem;
  box-sizing: border-box;
}

button {
  background: var(--primary-color);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  transition: opacity 0.3s, background-color 0.3s;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}