/* From the :root element you can easily change the colors of the design, its size and so on. */
:root {

  /* Font family */
  --font_family: 'Inter', sans-serif;

  /* Font size */
  --font_size: 16px;

  /* Background color or image */
  --background_color: #ffffff;
  --background_image: url("../img/wallpaper.jpg");

  /* Image frame */
  --image_border_color: #ffffff;
  --image_border_px: 3px;

  /* Image size */
  --image_width: 140px;
  --image_height: 140px;

  /* Title and description colors */
  --title_color: #fff;
  --description_color: #e60f0f;

  /* Social icons */
  --svg_color: #fff;

  /* Menu colors */
  --menu_background_color: #ffffff;
  --menu_text_color: #3285bd;
  --menu_active_text_color: #f1c40f;

  /* Buttons */
  --button_background_color: #ffffff;
  --button_text_color: #ffffff;
  --button_text_hover_color: #f1c40f;

  /* Textareas */
  --textarea_background_color: #ffffff;
  --textarea_text_color: #3285bd;
  --textarea_link_text_color: #f1c40f;

  /* Footer */
  --footer_background_color: #ffffff;
  --footer_text_color: #3285bd;
  --footer_link_text_color: #f1c40f;
}

/* --- Layout Base --- */
body {
  font: var(--font_size) var(--font_family);
  font-weight: 400;
  line-height: 1.5;
  background: var(--background_color) var(--background_image) no-repeat center center;
  background-size: cover;
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  justify-content: center; /* centra verticalmente */
  align-items: center; /* centra orizzontalmente */
}

/* --- Quando il telefono è in verticale (portrait) --- */
@media screen and (orientation: portrait) {
  body {
    background-size: cover;
    background-position: center center;
    background-attachment: fixed;
  }
}

/* --- Header e Main centrati insieme --- */
.centered {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center; /* centratura verticale */
  gap: 1rem;
  width: 100%;
  text-align: center;
}

/* --- Utilities --- */
.flex_column_center {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.flex_row_center {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
}

.flex_no_wrap_row_center {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: center;
}

/* --- Header --- */
header {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.header_img {
  padding-top: 1em;
}

.header_img img {
  height: var(--image_height);
  width: var(--image_width);
  border: var(--image_border_px) solid var(--image_border_color);
  border-radius: 50%;
  margin-bottom: 0.5em;
}

.header_text {
  text-align: center;
}

.header_text h1 {
  color: var(--title_color);
  font-size: 2em;
  margin: 0.2em 0;
}

.header_text h2 {
  color: var(--description_color);
  font-size: 1.5em;
  margin: 0;
}

/* --- Social Icons --- */
.header_svg_list {
  padding-top: 1em;
}

.header_svg_item {
  width: 2.1em;
  height: 2.1em;
  cursor: pointer;
}

.header_svg_item:hover {
  transform: scale(1.10);
  transition: 0.10s ease;
}

.header_svg_item + .header_svg_item {
  margin-left: 1em;
}

.header_svg_item svg {
  fill: var(--svg_color);
}

/* --- Menu --- */
#header_nav_menu_item_1 {
  color: var(--menu_active_text_color);
}

#header_nav_menu_item_2,
#header_nav_menu_item_3 {
  color: var(--menu_text_color);
}

.header_nav_menu_list {
  padding-top: 1em;
  margin-left: 1em;
  margin-right: 1em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4em;
}

.header_nav_menu_item {
  color: var(--menu_text_color);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  text-align: center;
  list-style-type: none;
  cursor: pointer;
  padding: 0.5em 0.9em;
  border-radius: 0.7em;
  transition: 0.10s ease;
  font-size: 1.1em;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 12px rgba(0,0,0,0.18);
}

/* --- Main --- */
main {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#main_section_container_2,
#main_section_container_3 {
  display: none;
}

.main_a_item {
  margin-top: 1em;
  text-decoration: none;
}

/* --- Glass Buttons (white text) --- */
.main_button_item,
.main_small_button_item,
.main_text_item {
  color: var(--button_text_color);
  
  background: rgba(0, 80, 126, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.219);
  border-radius: 1em;
  min-height: 3.7em;
  text-align: center;
  cursor: pointer;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.main_button_item:hover,
.main_small_button_item:hover,
.main_text_item:hover {
  color: var(--button_text_hover_color);
  background: rgba(255, 255, 255, 0.18);
  transform: scale(1.03);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
}

.main_small_button_list {
  display: flex;
  flex-direction: row;
}

.main_small_a_item {
  margin-top: 1em;
  text-decoration: none;
}

.main_small_a_item + .main_small_a_item {
  margin-left: 10px;
}

.main_small_button_item {
  width: calc(41em / 2 - 5px);
  border-radius: 1em;
  min-height: 3.7em;
  text-align: center;
  cursor: pointer;
}

.main_text_item {
  width: 41em;
  margin-top: 1em;
  padding: 0.8em;
  border-radius: 1em;
  text-align: center;
  min-height: 3.7em;
}

.main_button_item {
  width: 41em;
  border-radius: 1em;
  min-height: 3.7em;
}

/* --- Footer Glass --- */
footer {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem 0 1.5rem;
  position: relative;
}

.footer_div_item {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  padding: 1em 1.2em;
  border-radius: 1em;
}

.footer_a_item {
  color: var(--footer_link_text_color);
  text-decoration: none;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .main_text_item {
    width: 92vw;
  }

  .main_small_button_item {
    width: calc(92vw / 2 - 5px);
  }

  .main_button_item {
    width: 92vw;
  }

  .header_h_item {
    width: 92vw;
    text-align: center;
    font-weight: bolder!important;
  }
}