:root {
  --black: #020403;
  --green: #b7ff3c;
  --green-soft: #7ccf24;
  --gold: #d8c678;
  --glass: rgba(5, 14, 8, 0.84);
  --line: rgba(183, 255, 60, 0.25);
  --text: #edf7dd;
  --muted: #9fae91;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: radial-gradient(circle at center, #071007 0%, var(--black) 58%, #000 100%);
  color: var(--text);
  font-family: Georgia, "Times New Roman", serif;
}

body.modal-open {
  overflow: hidden;
}

.duckium-stage {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  display: grid;
  place-items: center;
  padding: 7rem 2rem;
}

.duckium-stage::before {
  content: "";
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(circle at 50% 38%, rgba(183, 255, 60, 0.09), transparent 22%),
    radial-gradient(circle at 50% 82%, rgba(216, 198, 120, 0.06), transparent 26%);
  pointer-events: none;
}

.hero {
  position: relative;
  z-index: 2;
  width: min(920px, 92vw);
  text-align: center;
}

.hero-logo {
  display: block;
  width: min(30vw, 320px);
  min-width: 190px;
  margin: 0 auto 1.2rem;
  filter: drop-shadow(0 0 22px rgba(183, 255, 60, 0.22));
}

.tagline {
  display: inline-block;
  position: relative;
  margin-bottom: 4.25rem;
  color: var(--gold);
  font-size: clamp(1rem, 2.1vw, 1.45rem);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-shadow: 0 0 16px rgba(216, 198, 120, 0.3);
}

.tagline::after {
  content: "";
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: -0.85rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--green), var(--gold), transparent);
  animation: shimmer 4s ease-in-out infinite;
}

.growth-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: clamp(0.7rem, 1.8vw, 1.5rem);
  align-items: end;
}

.growth-row img {
  width: 100%;
  aspect-ratio: 1 / 1.08;
  object-fit: contain;
  opacity: 0.9;
  filter:
    drop-shadow(0 0 12px rgba(183, 255, 60, 0.12))
    drop-shadow(0 10px 18px rgba(0, 0, 0, 0.75));
  transition: transform 0.35s ease, opacity 0.35s ease, filter 0.35s ease;
}

.growth-row img:hover {
  transform: translateY(-6px) scale(1.03);
  opacity: 1;
  filter:
    drop-shadow(0 0 20px rgba(183, 255, 60, 0.28))
    drop-shadow(0 14px 22px rgba(0, 0, 0, 0.82));
}

.corner-button {
  position: fixed;
  z-index: 5;
  width: clamp(58px, 7vw, 86px);
  height: clamp(58px, 7vw, 86px);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: radial-gradient(circle at center, rgba(183, 255, 60, 0.08), rgba(0, 0, 0, 0.72));
  color: var(--green);
  cursor: pointer;
  display: grid;
  place-items: center;
  box-shadow: 0 0 22px rgba(183, 255, 60, 0.08);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.corner-button:hover {
  transform: scale(1.06);
  border-color: rgba(183, 255, 60, 0.62);
  box-shadow: 0 0 28px rgba(183, 255, 60, 0.18);
}

.corner-button img {
  width: 68%;
  height: 68%;
  object-fit: contain;
}

.corner-left-top {
  top: 1.25rem;
  left: 1.25rem;
}

.corner-right-top {
  top: 1.25rem;
  right: 1.25rem;
}

.corner-left-bottom {
  bottom: 1.25rem;
  left: 1.25rem;
}

.corner-right-bottom {
  bottom: 1.25rem;
  right: 1.25rem;
}

.info-button {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-style: italic;
  line-height: 1;
}

.modal-shell {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: none;
}

.modal-shell[aria-hidden="false"] {
  display: block;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(8px);
}

.modal-card {
  position: relative;
  width: min(760px, calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  overflow: auto;
  margin: 1rem auto;
  top: 50%;
  transform: translateY(-50%);
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid rgba(183, 255, 60, 0.26);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(9, 18, 11, 0.96), rgba(0, 0, 0, 0.96)),
    var(--glass);
  box-shadow:
    0 0 60px rgba(183, 255, 60, 0.09),
    0 30px 80px rgba(0, 0, 0, 0.8);
}

.modal-card h2 {
  margin: 0 0 1rem;
  color: var(--gold);
  font-weight: normal;
  font-size: clamp(1.8rem, 4vw, 3rem);
  letter-spacing: 0.08em;
}

.modal-card p,
.modal-card li {
  color: var(--text);
  font-size: 1.05rem;
  line-height: 1.7;
}

.modal-card a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(183, 255, 60, 0.35);
}

.modal-card a:hover {
  border-bottom-color: var(--green);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(183, 255, 60, 0.22);
  background: rgba(0, 0, 0, 0.35);
  color: var(--green);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.modal-actions a {
  padding: 0.75rem 1rem;
  border: 1px solid rgba(183, 255, 60, 0.28);
  border-radius: 999px;
  background: rgba(183, 255, 60, 0.05);
}

@keyframes shimmer {
  0%, 100% {
    opacity: 0.35;
    transform: scaleX(0.72);
  }
  50% {
    opacity: 1;
    transform: scaleX(1);
  }
}

@media (max-width: 760px) {
  .duckium-stage {
    padding: 7rem 1rem 8rem;
  }

  .growth-row {
    grid-template-columns: repeat(5, minmax(62px, 1fr));
    gap: 0.45rem;
  }

  .tagline {
    letter-spacing: 0.12em;
    margin-bottom: 3rem;
  }
}





//--  /assets/js/left_top_mod.js --//


window.duckiumLeftTopModal = {
  title: "Duckium",
  content: `
    <p>
      Duckium is a living-system project built around the cultivation,
      display, and use of duckweed.
    </p>

    <p>
      This space will introduce the Duckium concept, the mission,
      future visits, demonstrations, contact information, and project updates.
    </p>

    <div class="modal-actions">
      <a href="#">Visit a Duckium</a>
      <a href="#">About Duckium</a>
      <a href="#">Contact</a>
    </div>
  `
};