*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }


body.aquarium-page header {
  display: none;
}
body.aquarium-page {
  overflow-x: hidden;
}

h1{
  text-align: center;
  font-size: 1.8em;
}

h2{
  text-align: center;
  font-size: 0.8em;
}
  
  .back-postcard {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 500;
  display: block;
  transition: transform 0.15s ease;
}

  .back-postcard img {
  width: 90px;
  height: auto;
  filter: drop-shadow(2px 3px 5px rgba(0,0,0,0.3));
  transform: rotate(-6deg);
}

.back-postcard:hover img {
  transform: rotate(-2deg) scale(1.05);
}
.back-postcard-label {
  position: absolute;
  bottom: -22px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  background: var(--link-color);
  color: #fff;
  font-size: 0.75em;
  padding: 3px 8px;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.back-postcard:hover .back-postcard-label {
  opacity: 1;
}
  
#aquarium-wrap {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 900px;
  height: 500px;
  margin: 30px auto;
  border-radius: var(--round-borders, 10px);
  overflow: hidden;
  border: 3px solid var(--link-color, #94003A);
  min-width: 0;
}

main {
  overflow-x: hidden;
}

body.aquarium-page .layout {
  width: auto;
  max-width: 1500px;
}

/* ── Toolbar ───────────────────────────────────────────────── */
#toolbar {
  flex-shrink: 0;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 0;
  height: 68px;
  width: 100%;
  max-width: 900px;
  overflow-x: scroll;
  background: rgba(6, 16, 34, 0.97);
  border-bottom: 1px solid rgba(77, 171, 247, 0.25);
  padding: 0 14px;
  overflow-y: hidden;
  scrollbar-width: none;
  color: #fff;
  font-family: 'Segoe UI', Tahoma, sans-serif;
}

#toolbar::-webkit-scrollbar { display: none; }


.toolbar-brand {
  font-size: 15px;
  font-weight: 700;
  font-family: 'Courier New', Courier, monospace;
  color: #4DABF7;
  text-shadow: 0 0 12px rgba(77, 171, 247, 0.6);
  white-space: nowrap;
  padding-right: 14px;
  margin-right: 4px;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.toolbar-section {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  height: 100%;
}

.section-label {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.3);
  white-space: nowrap;
  align-self: center;
}

.toolbar-items {
  display: flex;
  gap: 4px;
  align-items: center;
}

.entity-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-width: 52px;
  padding: 5px 7px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 7px;
  color: inherit;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
  white-space: nowrap;
}
.entity-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}
.entity-btn:active { transform: translateY(0); }

.btn-ascii {
  font-family: 'Courier New', Courier, monospace;
  font-size: 11px;
  line-height: 1;
}

.btn-name {
  font-size: 8.5px;
  color: rgba(255, 255, 255, 0.4);
  font-family: inherit;
  line-height: 1;
}

.action-btn {
  padding: 7px 13px;
  border-radius: 7px;
  border: 1px solid rgba(77, 171, 247, 0.35);
  background: rgba(77, 171, 247, 0.08);
  color: #4DABF7;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
}
.action-btn:hover { background: rgba(77, 171, 247, 0.2); }
.action-btn.danger {
  border-color: rgba(255, 107, 107, 0.35);
  background: rgba(255, 107, 107, 0.08);
  color: #FF6B6B;
}
.action-btn.danger:hover { background: rgba(255, 107, 107, 0.2); }

.rand-btn {
  font-size: 11px;
  padding: 5px 9px;
  border-color: rgba(180, 100, 255, 0.35);
  background: rgba(180, 100, 255, 0.08);
  color: #b47fff;
}
.rand-btn:hover { background: rgba(180, 100, 255, 0.2); }
.rand-btn.active {
  border-color: rgba(180, 100, 255, 0.8);
  background: rgba(180, 100, 255, 0.25);
  box-shadow: 0 0 8px rgba(180, 100, 255, 0.4);
}

.color-section {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 12px;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  white-space: nowrap;
}
.color-section label {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.3);
  cursor: pointer;
}
.color-preview {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
  cursor: pointer;
  transition: border-color 0.15s;
}
.color-preview:hover { border-color: rgba(255, 255, 255, 0.5); }
input[type="color"] {
  width: 0;
  height: 0;
  opacity: 0;
  position: absolute;
  pointer-events: none;
}

#stats {
  padding-left: 12px;
  font-size: 10px;
  color: rgba(255, 255, 255, 0.3);
  font-family: 'Courier New', Courier, monospace;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Canvas ───────────────────────────────────────────────── */
#aquarium-canvas {
  flex: 1;
  display: block;
  width: 100%;
  max-width:1500px;
  min-height: 0;
  cursor: default;
  background: #061420;
}