/* ========================= */
/* Variabili Globali         */
/* ========================= */
:root {
  --background-color: #000;     /* Sfondo principale */
  --form-background: #2a2a2a;     /* Sfondo del form */
  --text-color: #fff;           /* Testo generico */
  --placeholder-color: #b0b0b0; /* Testo placeholder / etichette */
  --border-color: #444;         /* Bordo input */
  --focus-color: transparent;   /* Colore al focus (qui trasparente) */
  --button-bg: #ffffff;         /* Sfondo pulsanti */
  --button-text: #000;          /* Testo pulsanti */
  --disabled-bg: #666;          /* Sfondo pulsanti disabilitati */
  --disabled-text: #bbb;        /* Testo pulsanti disabilitati */
  --navbar-bg: #333;            /* Sfondo navbar */
  --navbar-text: #fff;          /* Testo navbar */

  /* Variabili dedicate al footer */
  --footer-bg: #111;            /* Sfondo footer */
  --footer-text: #ffffff;       /* Testo footer */
}

/* ========================= */
/* Stile Generale            */
/* ========================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--background-color);
  color: var(--text-color);
  font-family: 'Montserrat', Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}

/* ========================= */
/* Navbar Unica              */
/* ========================= */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--navbar-bg);
  color: var(--navbar-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  z-index: 1000;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar .logo img {
  max-height: 50px;
  display: block;
  height: auto;
  width: auto;
}

/* Icona hamburger */
.hamburger-menu {
  display: none; /* Mostrata solo da media query (mobile) */
  width: 30px;
  height: 25px;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
}

.hamburger-menu span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: #fff;
  border-radius: 2px;
}

/* Menu link in linea su desktop */
.nav-links {
  list-style: none;
  display: flex;
  gap: 20px;
}

.nav-links li a {
  text-decoration: none;
  color: var(--navbar-text);
  font-size: 16px;
}

/* ========================= */
/* Form Container            */
/* ========================= */
.form-container {
  background-color: var(--form-background);
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.5);
  width: 90%;
  max-width: 400px;
  margin-top: 80px; /* Spazio sotto la navbar fissa */
  text-align: left;
}

.form-container h2, 
.form-container h3 {
  text-align: center;
  margin-bottom: 20px;
  font-weight: 700;
}

/* Titolo principale */
.form-container h2 {
  font-size: 1.8rem;
}

/* Sottotitolo */
.form-container h3 {
  font-size: 1.1rem;
  color: var(--placeholder-color);
}

/* ========================= */
/* Input e Select            */
/* ========================= */
input, select {
  width: 100%;
  padding: 12px;
  margin-bottom: 15px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background-color: var(--background-color);
  color: var(--text-color);
  font-size: 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

input::placeholder,
select::placeholder {
  color: var(--placeholder-color);
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--focus-color);
  box-shadow: none;
}

/* ========================= */
/* Checkbox                  */
/* ========================= */
label {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
  color: var(--text-color);
}

label p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.4;
}

label input[type="checkbox"] {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid var(--placeholder-color);
  border-radius: 3px;
  background-color: var(--form-background);
  cursor: pointer;
  margin-right: 10px;
  position: relative;
}

label input[type="checkbox"]:checked {
  background-color: var(--button-bg);
  border-color: var(--button-bg);
}

label input[type="checkbox"]:checked::after {
  content: "✓";
  position: absolute;
  top: -2px; 
  left: 3px;
  color: #000;
  font-size: 30px;
}

/* ========================= */
/* Pulsante Invia            */
/* ========================= */
button {
  background: var(--button-bg);
  color: var(--button-text);
  font-weight: bold;
  font-size: 1rem;
  padding: 12px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  width: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(255, 193, 7, 0.5);
}

button:disabled {
  background: var(--disabled-bg);
  color: var(--disabled-text);
  cursor: not-allowed;
}

/* ========================= */
/* Footer                    */
/* ========================= */
.site-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: var(--footer-bg);
  color: var(--footer-text);
  text-align: center;
  padding: 20px;
  font-size: 0.9rem;
  z-index: 0; /* Assicurati che il footer sia in primo piano se necessario */
}

.site-footer p {
  margin: 0;
  line-height: 1.4;
}

/* ========================= */
/* Stile Link                */
/* ========================= */
a {
  color: var(--text-color);
  text-decoration: none;
  border-bottom: 1px solid var(--text-color);
}

a:hover {
  text-decoration: underline;
  color: var(--text-color);
}

/* ========================= */
/* Regole per messageBox     */
/* ========================= */
#messageBox {
  position: fixed;         /* Posizione fissa */
  top: 100px;              /* Posizionato 100px sotto il top, per evitare la navbar */
  left: 50%;               /* Centrato orizzontalmente */
  transform: translateX(-50%); /* Centra il div */
  display: none;           /* Inizialmente nascosto */
  font-size: 16px;
  padding: 10px;
  text-align: center;
  border-radius: 5px;
  background-color: var(--form-background); /* Usa lo stesso sfondo del form */
  z-index: 2000;           /* Valore elevato per essere visibile sopra altri elementi */
}

/* ========================= */
/* Media Queries             */
/* ========================= */
@media (max-width: 1024px) {
  .hamburger-menu {
    display: flex;
  }
  
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    right: 20px;
    background-color: var(--navbar-bg);
    flex-direction: column;
    gap: 15px;
    padding: 15px;
    border-radius: 5px;
  }

  .nav-links.open {
    display: flex;
  }
}

@media (max-width: 768px) {
  .form-container {
    padding: 20px;
  }
  input, select, button {
    font-size: 0.9rem;
  }
  .site-footer {
    position: static;
    margin-top: 20px; /* opzionale: per aggiungere uno spazio tra il form e il footer */
  }
}


@media (max-width: 480px) {
  .form-container {
    padding: 15px;
  }
  input, select, button {
    font-size: 0.8rem;
  }
  button {
    padding: 10px;
  }
}