:root {
  --s: clamp(37.5px, 5vw, 75px);

  /* Loader background variable - Defaults to Dark */
  --loader-bg: #000000;
  --page-bg-l: 20%;
  /* Dark mode background lightness */
  --page-text: #FFFFFF;
  /* Dark mode text */
  --dominant-h: 0;
  --dominant-s: 0%;
}

/* Update loader background only if user is in Light Mode */
@media (prefers-color-scheme: light) {
  :root {
    --loader-bg: #FFFFFF;
    --page-bg-l: 90%;
    /* Light mode background lightness */
    --page-text: #000000;
    /* Light mode text */
  }
}

body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  overflow-y: auto;
  background-color: #121212;
  min-height: 100vh;
  font-family: "Google Sans Flex", 'Segoe UI Variable', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-optical-sizing: auto;
  font-style: normal;
  font-variation-settings:
    "slnt" 0,
    "wdth" 100,
    "GRAD" 0,
    "ROND" 0;
  color: #EAEAEA;
}

html,
body {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

html::-webkit-scrollbar,
body::-webkit-scrollbar {
  display: none;
}

#site-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--loader-bg);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

#loader-video {
  width: 100px;
  height: 100px;
  object-fit: cover;
  /* Disable right-click options/interaction */
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

.loader-finished {
  opacity: 0;
  pointer-events: none;
}

/* --- FIRST PAGE CONTAINER --- */
.first-page {
  position: relative;
  width: 100%;
  min-height: 100vh;
  padding-bottom: 20vh;
}

/* --- SCENE CONTAINER --- */
#scene-container {
  width: 100vw;
  height: max(150vh, 100%);
  position: absolute;
  top: 0;
  left: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

#scene-container.no-transition::before {
  transition: none !important;
}

/* --- BLUR LAYERS --- */
.blur-layer {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

#blur-layer-1 {
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}

/* --- CANVAS + PIXEL RENDERING --- */
canvas,
.small-cake-layer {
  display: block;
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
}

/* --- SIGNATURE --- */
.signature-container {
  position: fixed;
  top: 0;
  left: 0;
  padding: var(--s);
  z-index: 100;
  pointer-events: none;
  width: 100%;
  box-sizing: border-box;
  display: flex;
  justify-content: flex-start;
}

.signature-container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: max(25vh, calc(var(--s) + 100px));
  /* Enforces enough room for the gradient to fade cleanly */
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  -webkit-mask-image: linear-gradient(to bottom, black calc(var(--s) + 25px), transparent 100%);
  mask-image: linear-gradient(to bottom, black calc(var(--s) + 25px), transparent 100%);
  z-index: -1;
  transform: translate3d(0, 0, 0);
  /* Hardware accelerates the blur over the pixelated canvas */
}

.signature {
  height: var(--s);
  width: auto;
  user-select: none;
  opacity: 0.8;
  filter: drop-shadow(0 2px 5px rgba(0, 0, 0, 0.3));
  pointer-events: none;
  transform-origin: left top;
  will-change: transform;
}

/* --- BUTTON CONTAINER --- */
.b-c {
  position: relative;
  top: 0;
  left: 0;
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: flex-start !important;
  justify-content: flex-end !important;
  z-index: 3;
  padding: var(--s);
  padding-top: calc(var(--s) * 2.5);
  gap: 0;
  --mask-y: 0px;
  -webkit-mask-image: linear-gradient(to bottom, transparent var(--mask-y), transparent calc(var(--mask-y) + 15px), black calc(var(--mask-y) + var(--s) + 25px), black 100%);
  mask-image: linear-gradient(to bottom, transparent var(--mask-y), transparent calc(var(--mask-y) + 15px), black calc(var(--mask-y) + var(--s) + 25px), black 100%);
  box-sizing: border-box;
  pointer-events: none;
}

/* --- BUTTONS --- */
.b {
  opacity: 0.8;

  will-change: transform, opacity;

  margin: 0;
  font-size: var(--s);
  cursor: pointer;
  transform-origin: left;
  text-align: left;
  text-decoration: none;
  color: inherit;

  max-width: 100%;
  padding-right: 20px;
  box-sizing: border-box;
  padding-left: 5px;
  text-transform: lowercase;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: auto;

  font-weight: 300;

  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  position: relative;
}

#lastfm-button {
  word-wrap: break-word;
  white-space: normal;
}

.button-text {
  pointer-events: none;
}

/* --- RAINING CAKE --- */
#raining-cakes-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: max(150vh, 100%);
  pointer-events: none;
  z-index: 2;
  overflow: hidden;
}

.small-cake {
  position: absolute;
  width: 60px;
  height: 80px;
}

.small-cake-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.small-cake-base {
  background-image: url('./assets/bday/cakebase.png');
  -webkit-mask-image: url('./assets/bday/cakebase_mask.png');
  mask-image: url('./assets/bday/cakebase_mask.png');
}

.small-cake-frosting {
  background-image: url('./assets/bday/cakefrosting.png');
  -webkit-mask-image: url('./assets/bday/cakefrosting_mask.png');
  mask-image: url('./assets/bday/cakefrosting_mask.png');
}

.small-cake-cherries {
  background-image: url('./assets/bday/cakecherries.png');
  -webkit-mask-image: url('./assets/bday/cakecherries_mask.png');
  mask-image: url('./assets/bday/cakecherries_mask.png');
}

/* --- MOBILE ADJUSTMENTS --- */
@media (max-width: 768px) {
  :root {
    --s: 37.5px;
  }

  .signature-container {
    left: 0;
    transform: none;
    justify-content: center;
  }

  .signature {
    transform-origin: center top;
  }

  .b-c {
    position: relative;
    top: 0;
    left: 0;
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center !important;
    justify-content: center !important;
    padding: 0;
    padding-bottom: 0;
    padding-top: calc(var(--s) * 1.5);
    box-sizing: border-box;
  }

  .b {
    transform-origin: center;
    text-align: center;
    flex-shrink: 0;
    width: auto;
    max-width: 90%;
    padding: 5px 0;
    padding-left: 0 !important;
    padding-right: 0 !important;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 480px) {
  :root {
    --s: 37.5px;
  }

  .b-c {
    gap: 0;
  }

  .b {
    max-width: 95%;
    padding: 2px 0;
  }
}

/* --- SCROLL INDICATOR --- */
.scroll-indicator {
  position: fixed;
  bottom: 25px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  width: 35px;
  height: 35px;
  animation: bounce 2s infinite cubic-bezier(0.445, 0.05, 0.55, 0.95);
  pointer-events: auto;
  cursor: pointer;
  isolation: isolate;
  will-change: opacity, transform;
}

.scroll-indicator-svg {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  transition: opacity 0.3s ease;
}

.normal-arrow {
  opacity: 1;
}

.scroll-indicator::before {
  content: "";
  position: absolute;
  top: -5px;
  left: -5px;
  right: -5px;
  bottom: -5px;
  background-color: currentColor;
  border-radius: 50%;
  opacity: 0;
  transform: scale(0.5);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: -1;
  -webkit-mask-image: linear-gradient(white, white), url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  -webkit-mask-size: 100% 100%, 35px 35px;
  -webkit-mask-position: center, center;
  -webkit-mask-repeat: no-repeat, no-repeat;
  -webkit-mask-composite: destination-out;
  mask-image: linear-gradient(white, white), url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  mask-size: 100% 100%, 35px 35px;
  mask-position: center, center;
  mask-repeat: no-repeat, no-repeat;
  mask-composite: subtract;
}

.scroll-indicator:active .normal-arrow {
  opacity: 0;
}

.scroll-indicator:active::before {
  opacity: 0.8;
  transform: scale(0.9);
}

.scroll-indicator:active,
.scroll-indicator.pause-bounce {
  animation-play-state: paused;
}

@media (hover: hover) {
  .scroll-indicator:hover .normal-arrow {
    opacity: 0;
  }

  .scroll-indicator:hover::before {
    opacity: 1;
    transform: scale(1);
  }

  .scroll-indicator:hover {
    animation-play-state: paused;
  }
}

@keyframes bounce {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(10px);
  }
}

/* --- NEW CONTENT AREA --- */
.new-white-page {
  /* 10-step cubic ease-in-out interpolation curve for maximum smoothness */
  background: linear-gradient(to bottom,
      hsla(var(--dominant-h), var(--dominant-s), var(--page-bg-l), 0) 0%,
      hsla(var(--dominant-h), var(--dominant-s), var(--page-bg-l), 0.004) 7.5vh,
      hsla(var(--dominant-h), var(--dominant-s), var(--page-bg-l), 0.032) 15vh,
      hsla(var(--dominant-h), var(--dominant-s), var(--page-bg-l), 0.108) 22.5vh,
      hsla(var(--dominant-h), var(--dominant-s), var(--page-bg-l), 0.256) 30vh,
      hsla(var(--dominant-h), var(--dominant-s), var(--page-bg-l), 0.5) 37.5vh,
      hsla(var(--dominant-h), var(--dominant-s), var(--page-bg-l), 0.744) 45vh,
      hsla(var(--dominant-h), var(--dominant-s), var(--page-bg-l), 0.892) 52.5vh,
      hsla(var(--dominant-h), var(--dominant-s), var(--page-bg-l), 0.968) 60vh,
      hsla(var(--dominant-h), var(--dominant-s), var(--page-bg-l), 0.996) 67.5vh,
      hsla(var(--dominant-h), var(--dominant-s), var(--page-bg-l), 1) 75vh,
      hsla(var(--dominant-h), var(--dominant-s), var(--page-bg-l), 1) 100%);
  color: var(--page-text);
  margin-top: -15vh;
  padding-top: 15vh;
  box-sizing: border-box;
  min-height: 115vh;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 10;
  pointer-events: none;
}

.new-white-page>* {
  pointer-events: auto;
}

.new-white-page h1 {
  opacity: 1;
}

.bouncing-text span {
  display: inline-block;
  /* 4.5s total duration ensures a ~3 second wait after the letters finish bouncing */
  animation: bounce-wave 4.5s infinite;
  animation-delay: calc(var(--i) * 0.08s);
}

@keyframes bounce-wave {
  0% {
    transform: translateY(0);
    animation-timing-function: ease-out;
    /* Smooth deceleration as it goes up */
  }

  7.5% {
    transform: translateY(-12px);
    animation-timing-function: ease-in;
    /* Smooth acceleration as it falls down */
  }

  15%,
  100% {
    transform: translateY(0);
  }
}