/* ───────── Global Variables ───────── */
:root {
  --neon-pink: #ff1493;
  --terminal-green: #00cc00;
  --main-font: "VT323-Regular", sans-serif;

  /* custom corner radius */
  --corner-base: 20px; /* base radius for TR/BL */
  --corner-prop: calc(
    var(--corner-base) * 0.4
  ); /* 40% of base = 8px for TL/BR */
  --corner-med: 15px; /* 0.75× scale */
  --corner-small: 15px; /* 0.5× scale */
}

/* ───────── Base Styles & Resets ───────── */
/* Import custom retro font (VCR-OSD-Mono) */
@font-face {
  font-family: "VT323-Regular";
  src: url(/assets/fonts/VT323-Regular.ttf);
  font-weight: normal;
}

* {
  /* Universal Reset */
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  /* Remove touch highlight everywhere */
  /* Prevent the default semi-transparent overlay that appears on touch (tap highlight)
   across all elements in mobile browsers (iOS Safari, Chrome for Android, etc.) */
  -webkit-tap-highlight-color: transparent;
}

/* Body styling */
body {
  /* fallback static background */
  background-color: black;
  height: 100dvh;
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  user-select: none;
  font-family: var(--main-font);

  /* hide scroll bar  */
  scrollbar-width: none;
  scrollbar-color: transparent transparent;
  -ms-overflow-style: none;
}

/* ───────── Layout Styles ───────── */
/* the canvas is always positioned behind content */
video#bg-video {
  position: absolute;
  width: 100%;
  height: 100dvh;
  top: 0;
  left: 0;
  object-fit: fill;
  z-index: -1;
}

main#main-container {
  height: 85%;
  width: 85%;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  line-height: 1.1;
}

section#section-global-container {
  height: 95%;
  width: 95%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

div#div-section-container {
  height: 95%;
  width: 95%;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* ───────── Link Styles ───────── */
a {
  text-decoration: none;
  color: var(--neon-pink);
  transition: color 0.5s ease-in-out;
}

a:hover {
  color: var(--terminal-green);
}

/* ───────── Footer Styles ───────── */
footer {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  display: flex;
  justify-content: space-around;
  align-items: center;
}

img.footer-ico {
  transition: transform 0.3s ease-in-out;
  height: 3rem;
}

img.footer-ico:hover {
  border-radius: 100%;
  transform: translateY(-4px);
}

ul#ul-footer {
  display: flex;
  list-style: none;
}

footer a {
  font-size: 1.2rem;
}

/* ───────── Coming Soon Figure Styles ───────── */
figure#coming-soon-figure {
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin-left: 2rem;
  height: 100%;
  width: 100%;
  text-align: center;
}

figure#coming-soon-figure video {
  width: 85%;
  height: auto;
  border-radius: 75%;
  opacity: 0.5;
}

figure#coming-soon-figure figcaption {
  margin-top: 2rem;
  padding-left: 0.5rem;
  font-size: 1.5rem;
  color: var(--terminal-green);
  margin-bottom: 1rem;
}

/* ───────── Typewriter Effect ───────── */
/* Retro Terminal Typewriter Effect (terminal green to neon pink) */
.typewriter-class-1 {
  color: var(--terminal-green);
  transition: color 1s ease-in-out;
}

figure#coming-soon-figure .typewriter-class-2 {
  color: var(--neon-pink);
}

/* Balancing lines */
#typewriter-text {
  line-height: 1.5;
  word-break: break-word;
  text-align: left;
}

/* ───────── Navigation Styles ───────── */
#nav-buttons,
#change-style-button-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  margin-top: 1rem;
  transition: opacity 0.5s ease;
  pointer-events: none;
}

#change-style-button-nav {
  width: 100%;
  align-items: center;
  justify-content: space-between;
}

#nav-buttons.visible,
#change-style-button-nav.visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

#nav-back-button {
  position: sticky;
  top: 0; /* Offset: distance (in px) from the top edge of its container at which it becomes fixed */
  z-index: 10; /* Ensure the button stays above other content */
}

/* nav buttons */
.nav-button {
  display: flex;
  background-color: var(--neon-pink);
  color: black;
  font-weight: 700;
  font-family: var(--main-font);
  font-size: 1.5rem;
  padding: 0.5rem 1.5rem;
  margin: 0.75rem;
  border: none;
  /* TL TR BR BL */
  border-radius: var(--corner-prop) var(--corner-base) var(--corner-prop)
    var(--corner-base);
  cursor: pointer;
  box-shadow: 0 0 0.625rem var(--neon-pink);
  transition: background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
  white-space: nowrap;
}

.nav-button:hover {
  background-color: var(--terminal-green);
  color: black;
  box-shadow: 0 0 15px var(--terminal-green);
}

.nav-button:active {
  background-color: #008800;
  box-shadow: 0 0 8px #008800;
}

.nav-button:focus {
  outline: 2px solid var(--terminal-green);
  outline-offset: 2px;
}

/* ───────── Change Theme Button Styling ───────── */

#change-style-button {
  height: 3rem;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Theme icon image inside the button */

#change-style-button img {
  height: 1.2rem;
  width: auto;
}

/* Container for the animated bars (equalizer style) */

.changer {
  display: flex;
  gap: 5px;
  align-items: center;
}

/* Animated bar (individual vertical line) */

.bar {
  width: 4px;
  height: 10px;
  border-radius: 3px;
  background: var(--terminal-green);
  animation: wave 15s ease-in-out infinite;
  animation-delay: var(--bar-delay);
}

/* Individual delay for each bar to create a wave effect */

.bar:nth-child(1) {
  --bar-delay: 0s;
}
.bar:nth-child(2) {
  --bar-delay: 0.1s;
}
.bar:nth-child(3) {
  --bar-delay: 0.2s;
}
.bar:nth-child(4) {
  --bar-delay: 0.3s;
}
.bar:nth-child(5) {
  --bar-delay: 0.4s;
}

/* Wave animation definition */

@keyframes wave {
  0%,
  40%,
  100% {
    height: 10px; /* Start and end with base height */
    opacity: 0;
  }
  5% {
    height: 30px; /* Midpoint peak for wave pulse */
    opacity: 1;
  }
}

/* ───────── Smooth Effects ───────── */
/* Fade-in with upward slide */
.smooth-fade-in-upward {
  opacity: 0;
  transform: translateY(10px);
  animation: fadeInSlide 1s ease forwards;
}

@keyframes fadeInSlide {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade-out with downward slide (inverse of fade-in) */
.smooth-fade-out-upward {
  animation: fadeOutSlide 1s ease forwards;
}

@keyframes fadeOutSlide {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(10px);
  }
}

/* *********************************
 * ───────── Media Queries ─────────
 * ********************************* */

/*───────────── Adapt layout for horizontal or larger screens───────────── */

@media (orientation: landscape) {
  /* initial video  */

  figure#coming-soon-figure {
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 5rem;
  }

  figure#coming-soon-figure video {
    width: 30%;
  }

  figure#coming-soon-figure figcaption {
    font-size: 3rem;
  }

  /* footer  */

  footer a {
    font-size: 2rem;
  }

  footer {
    justify-content: center;
    gap: 4rem;
  }

  ul#ul-footer {
    gap: 1rem;
  }

  /* nav buttons  */

  .nav-button {
    font-size: 2rem;
    padding: 1rem 2rem;
  }

  #nav-buttons {
    gap: 2rem;
  }

  /* Custom Scrollbar */

  body {
    scrollbar-width: auto;
    scrollbar-color: var(--neon-pink);
  }

  /* WebKit browsers (Chrome, Safari, Edge) */
  ::-webkit-scrollbar {
    width: 12px; /* width of the scrollbar */
  }

  ::-webkit-scrollbar-track {
    background: transparent; /* transparent track */
  }

  ::-webkit-scrollbar-thumb {
    background: var(--neon-pink);
    border-radius: 6px;
    border: 3px solid transparent; /* inner margin for padding effect */
    /* Limit the background to the content box so the transparent border acts as inner padding */
    background-clip: content-box;
    /* Add a 100px transparent top border to shift the thumb down inside its track */
    border-top: 100px solid transparent;
  }
}

/* minor resolution screens  */

@media screen and (max-width: 1920px) and (orientation: landscape) {
  figcaption#typewriter-text.typewriter-class-1 {
    font-size: 2rem;
  }

  button.nav-button {
    font-size: 1.5rem;
    letter-spacing: 1px;
  }
  figure#coming-soon-figure video {
    width: 25%;
  }
}