/* Shared styles */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #080b20;
  color: white;
  font-family: Arial, sans-serif;
  isolation: isolate;
}

main {
  margin: 0;
  padding: 0;
}

button {
  font-family: inherit;
  font-size: 24px;
  font-weight: bold;
  padding: 18px 36px;
  background: #c4b5fd;
  color: #10102b;
  border: none;
  border-radius: 16px;
  cursor: pointer;
}

button:hover {
  background: #ddd6fe;
}

button:focus-visible {
  outline: 3px solid white;
  outline-offset: 5px;
}

[hidden] {
  display: none !important;
}

/* Starry background */
#stars {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-color: #080b20;

  background-image:
    radial-gradient(2px 2px at 30px 40px, white 99%, transparent),
    radial-gradient(1px 1px at 80px 160px, white 99%, transparent),
    radial-gradient(2px 2px at 150px 90px, #ddd6fe 99%, transparent),
    radial-gradient(1px 1px at 220px 30px, white 99%, transparent),
    radial-gradient(2px 2px at 270px 180px, white 99%, transparent),
    radial-gradient(1px 1px at 340px 120px, white 99%, transparent);

  background-size: 400px 240px;
}

/* Larger glowing stars */
.star {
  position: absolute;
  color: #fff5ce;
  font-size: 20px;
  text-shadow: 0 0 12px #fff5ce;
  animation: twinkle 3s ease-in-out infinite alternate;
}

.star:nth-child(1) { top: 12%; left: 15%; }
.star:nth-child(2) { top: 22%; left: 75%; }
.star:nth-child(3) { top: 65%; left: 10%; }
.star:nth-child(4) { top: 80%; left: 70%; }
.star:nth-child(5) { top: 10%; left: 48%; }
.star:nth-child(6) { top: 48%; left: 88%; }
.star:nth-child(7) { top: 88%; left: 35%; }
.star:nth-child(8) { top: 38%; left: 25%; }

@keyframes twinkle {
  from { opacity: 0.4; }
  to { opacity: 1; }
}

/* Homepage */
header {
  position: absolute;
  top: 0;
  left: 0;
  padding: 24px;
}

.logo {
  color: white;
  text-decoration: none;
  font-size: 26px;
  font-weight: bold;
}

#home-page {
  min-height: 100svh;
  padding: 100px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

#home-page h1 {
  margin: 0 0 20px;
  font-size: clamp(56px, 10vw, 96px);
  color: #eee8ff;
}

#home-page p {
  max-width: 550px;
  margin: 0 0 32px;
  color: white;
  font-size: 24px;
  line-height: 1.6;
}

#start-button {
  border-radius: 30px;
}

/* Black background during all tests */
body.pvt-mode {
  background: black;
}

body.pvt-mode #stars,
body.pvt-mode header {
  display: none;
}

/* Test layout */
body.pvt-mode #test-page {
  min-height: 100svh;
  max-width: none;
  margin: 0;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

#test-progress {
  margin: 0;
  color: white;
  font-size: 20px;
}

#test-title {
  margin: 20px 0;
  color: white;
  font-size: clamp(30px, 4vw, 44px);
}

/* Instructions begin around 1/8 down the screen.
   Normal flow keeps longer text from overlapping. */
#test-instructions {
  width: min(100%, 850px);
  margin: max(16px, calc(12.5svh - 125px)) 0 32px;
  color: white;
  font-size: clamp(22px, 2.5vw, 28px);
  line-height: 1.6;
}

#test-area {
  width: 100%;
  margin: 24px 0;
  padding: 0;
  border: none;
}

#test-feedback {
  color: white;
  font-size: 24px;
  line-height: 1.5;
}

/* Large test letters and words */
.stimulus {
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(60px, 12vw, 120px);
  font-weight: bold;
}

/* Yellow PVT counter */
#box,
#box:hover {
  display: block;
  width: min(90%, 500px);
  height: 220px;
  margin: 0 auto;
  background: black;
  color: #ffdf00;
  border: 2px solid #777;
  font-family: inherit;
  font-size: clamp(48px, 10vw, 96px);
}

#color-buttons button {
  margin: 6px;
}

/* Results */
#results-page {
  min-height: 100svh;
  padding: 100px 24px 40px;
  text-align: center;
}

#results-page h1 {
  font-size: 44px;
}

#results-page p,
#results-page li {
  font-size: 22px;
  line-height: 1.6;
}

#results-tips {
  display: inline-block;
  text-align: left;
}

#constellation {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  margin: 30px 0;
}

.result-star {
  color: #ffdf00;
  font-size: 26px;
  line-height: 1.8;
}

@media (prefers-reduced-motion: reduce) {
  .star {
    animation: none;
  }
}

/* Four stars, each with its own explanation underneath */
#constellation {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  max-width: 1100px;
  margin: 40px auto;
}

.star-card {
  padding: 28px;
  border: 1px solid #655b91;
  border-radius: 24px;
  background: rgba(16, 16, 43, 0.9);
  text-align: center;
}

.score-star {
  color: #ffdf00;
  font-size: 90px;
  text-shadow: 0 0 24px rgba(255, 223, 0, 0.45);
}

.star-card h2 {
  margin: 12px 0;
  color: white;
  font-size: 30px;
}

.star-score {
  color: #ffdf00;
  font-size: 28px;
  font-weight: bold;
}

.star-card h3 {
  color: #ddd6fe;
  font-size: 21px;
  line-height: 1.5;
}

#results-page .star-card p {
  color: white;
  font-size: 20px;
  line-height: 1.7;
}

.results-note {
  max-width: 850px;
  margin: 36px auto;
  padding: 24px;
  border-radius: 20px;
  background: rgba(16, 16, 43, 0.9);
}

#reflection-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

#reflection-buttons button[aria-pressed="true"] {
  background: #ffdf00;
  color: #10102b;
}

@media (max-width: 700px) {
  #constellation {
    grid-template-columns: 1fr;
  }
}

#medical-note {
  position: fixed;
  bottom: 12px;
  left: 16px;
  margin: 0;
  z-index: 100;
  color: white;
  font-family: inherit;
  font-size: 14px;
  line-height: 1.4;
  pointer-events: none;
}





/* Results-only constellation layout */
#results-page #constellation {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 50px 24px;
  max-width: 1200px;
  margin: 60px auto;
}


/* Place the four stars in a diamond */
#constellation .star-card:nth-child(1) {
  grid-column: 2;
  grid-row: 1;
}


#constellation .star-card:nth-child(2) {
  grid-column: 1;
  grid-row: 2;
}


#constellation .star-card:nth-child(3) {
  grid-column: 3;
  grid-row: 2;
}


#constellation .star-card:nth-child(4) {
  grid-column: 2;
  grid-row: 3;
}


/* Remove card boxes so stars sit directly in the sky */
#results-page .star-card {
  position: relative;
  min-width: 0;
  padding: 0 12px 20px;
  border: none;
  background: transparent;
  transform: none;
}


/* Glowing stars */
#results-page .score-star {
  position: relative;
  z-index: 1;
  height: 110px;
  font-size: 100px;
  line-height: 110px;
  color: #fff1a8;
  text-shadow:
    0 0 12px #ffdf00,
    0 0 35px rgba(255, 223, 0, 0.6);
}


/* Draw two lines from each side star to the top and bottom stars.
   Their lengths follow the actual grid rows. */
#constellation .star-card:nth-child(2)::before,
#constellation .star-card:nth-child(3)::before {
  content: "";
  position: absolute;
  top: 55px;
  width: calc(100% + 24px);
  height: calc(100% + 50px);
  border-top: 1px solid #a99de0;
  pointer-events: none;
  opacity: 0.7;
  z-index: -1;
}


#constellation .star-card:nth-child(2)::before {
  left: 50%;
  transform: skewY(-35deg);
  transform-origin: top left;
}


#constellation .star-card:nth-child(3)::before {
  right: 50%;
  transform: skewY(35deg);
  transform-origin: top right;
}


/* Keep explanations readable against the stars */
#results-page .star-card p {
  position: relative;
  padding: 16px;
  border-radius: 16px;
  background: rgba(8, 11, 32, 0.92);
}


/* On smaller screens, connect stars vertically */
@media (max-width: 900px) {
  #results-page #constellation {
    grid-template-columns: 1fr;
    gap: 48px;
    max-width: 550px;
  }


  #constellation .star-card:nth-child(n) {
    grid-column: 1;
    grid-row: auto;
  }


  #constellation .star-card:nth-child(2)::before,
  #constellation .star-card:nth-child(3)::before {
    display: none;
  }


  #results-page #constellation::before {
    content: "";
    position: absolute;
    top: 55px;
    bottom: 55px;
    left: 50%;
    border-left: 1px solid #a99de0;
    opacity: 0.5;
    z-index: -1;
  }


  #results-page .star-card {
    background: rgba(8, 11, 32, 0.85);
    border-radius: 20px;
  }
}

/* Use equal grid rows so all four connections line up */
#results-page #constellation {
  --star-gap: 50px;

  grid-auto-rows: 1fr;
  row-gap: var(--star-gap);
  isolation: isolate;
}

/* Four lines: two from the left star, two from the right */
#constellation .star-card:nth-child(2)::before,
#constellation .star-card:nth-child(2)::after,
#constellation .star-card:nth-child(3)::before,
#constellation .star-card:nth-child(3)::after {
  content: "";
  position: absolute;
  top: 55px;
  width: calc(100% + 24px);
  height: calc(100% + var(--star-gap));
  border: none;
  transform: none;
  pointer-events: none;
  z-index: -1;
  opacity: 0.75;

  background: linear-gradient(
    to bottom right,
    transparent calc(50% - 1px),
    #a99de0 50%,
    transparent calc(50% + 1px)
  );
}

/* Left → top */
#constellation .star-card:nth-child(2)::before {
  left: 50%;
  top: calc(55px - 100% - var(--star-gap));

  background: linear-gradient(
    to top right,
    transparent calc(50% - 1px),
    #a99de0 50%,
    transparent calc(50% + 1px)
  );
}

/* Left → bottom */
#constellation .star-card:nth-child(2)::after {
  left: 50%;
}

/* Right → top */
#constellation .star-card:nth-child(3)::before {
  right: 50%;
  top: calc(55px - 100% - var(--star-gap));
}

/* Right → bottom */
#constellation .star-card:nth-child(3)::after {
  right: 50%;

  background: linear-gradient(
    to top right,
    transparent calc(50% - 1px),
    #a99de0 50%,
    transparent calc(50% + 1px)
  );
}

/* Keep the vertical layout on smaller screens */
@media (max-width: 900px) {
  #results-page #constellation {
    grid-auto-rows: auto;
  }

  #constellation .star-card:nth-child(2)::before,
  #constellation .star-card:nth-child(2)::after,
  #constellation .star-card:nth-child(3)::before,
  #constellation .star-card:nth-child(3)::after {
    display: none;
  }
}