/* Updated: Persian pattern v3 */
.etymology {
  max-width: 1200px;
  margin: 1em auto;
  padding: var(--space-xx-large) var(--space-xxx-large);
  position: relative;
  background:
    linear-gradient(135deg,
      rgba(247, 244, 255, 0.6) 0%,
      rgba(245, 250, 255, 0.5) 50%,
      rgba(255, 250, 245, 0.6) 100%);
  border-radius: 24px;
  border: 1px solid rgba(178, 157, 219, 0.2);
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.02),
    0 4px 12px rgba(178, 157, 219, 0.08);
}

.etymology::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 1;
  pointer-events: none;
  border-radius: 24px;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(178, 157, 219, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(135, 206, 235, 0.3) 0%, transparent 50%);
  z-index: 0;
}

.etymology::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 1;
  pointer-events: none;
  border-radius: 24px;
  background-image:
    radial-gradient(circle, #B29DDB 2px, transparent 2px),
    radial-gradient(circle, #87CEEB 1.5px, transparent 1.5px);
  background-size: 50px 50px, 50px 50px;
  background-position: 0 0, 25px 25px;
  z-index: 0;
}

.etymology > * {
  position: relative;
  z-index: 1;
}

.etymology__title {
    font-family: var(--font-family-scorekard), serif;
  font-size: var(--font-size-xx-large);
  font-weight: 700;
  color: var(--color-ink-darkest);
  text-align: center;
  margin-bottom: var(--space-xx-small);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
}

.etymology__hero {
  max-width: 800px;
  margin: 0 auto var(--space-xx-large);
  text-align: center;
}

.etymology__hero p {
    font-family: var(--font-family-inter), serif;
  font-weight: 400;
  font-size: var(--font-size-large);
  color: var(--color-ink-darker);
  line-height: var(--line-height-loose);
}

.etymology__tree {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  position: relative;
  margin-bottom: var(--space-xx-large);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.tree-node {
  background: var(--color-canvas-light);
  border: 2px solid rgba(178, 157, 219, 0.25);
  border-radius: 12px;
  padding: var(--space-large) var(--space-large) var(--space-medium) var(--space-large);
  width: 100%;
  max-width: 600px;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  opacity: 0;
  transform: translateY(20px);
  box-shadow:
    0 1px 3px rgba(178, 157, 219, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  overflow: visible;
}

.tree-node::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 12px;
  pointer-events: none;
  opacity: 0.35;
  /*
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='70' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%23B29DDB' stroke-width='0.8' stroke-linecap='round'%3E%3Cpath d='M 10,0 Q 25,15 10,35 Q -5,15 10,0 M 10,0 Q 25,15 10,35 Q -5,15 10,0' /%3E%3Cpath d='M 60,0 Q 75,15 60,35 Q 45,15 60,0 M 60,0 Q 75,15 60,35 Q 45,15 60,0' /%3E%3Cpath d='M 35,35 Q 50,50 35,70 Q 20,50 35,35 M 35,35 Q 50,50 35,70 Q 20,50 35,35' /%3E%3Cpath d='M 85,35 Q 100,50 85,70 Q 70,50 85,35 M 85,35 Q 100,50 85,70 Q 70,50 85,35' /%3E%3C/g%3E%3C/svg%3E");
  */
  background-size: 100px 70px;
  background-position: 0 0;
  z-index: 1;
}

.tree-node.visible {
  opacity: 1;
  transform: translateY(0);
}

.tree-node:hover {
  box-shadow:
    0 4px 12px rgba(178, 157, 219, 0.2),
    0 8px 24px rgba(135, 206, 235, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  border-color: rgba(178, 157, 219, 0.4);
}

.tree-node:hover::before {
  opacity: 0.5;
}

.tree-node__header {
  display: flex;
  flex-direction: column;
  gap: var(--space-xxx-small);
  position: relative;
  z-index: 2;
}

.tree-node__language {
    font-family: var(--font-family-scorekard), serif;
    font-size: var(--font-size-small);
    font-weight: 600;
    color: var(--color-ink-darker);
    letter-spacing: var(--letter-spacing-looser);
}

.tree-node__language {
  font-family: var(--font-family-scorekard), serif;
  font-size: var(--font-size-small);
  font-weight: 600;
  color: var(--color-blue-darker);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-looser);
}

.tree-node__term {
    font-family: var(--font-family-scorekard), serif;
  font-size: var(--font-size-x-large);
  font-weight: 700;
  color: var(--color-ink-darkest);
  display: block;
  margin: var(--space-xx-small) 0;
  letter-spacing: var(--letter-spacing-tight);
}

.tree-node__date {
    font-family: var(--font-family-scorekard), serif;
  position: absolute;
  top: var(--space-x-large);
  left: 0;
  font-size: var(--font-size-xx-small);
  color: var(--color-ink-darkest);
  font-style: normal;
  font-weight: 600;
  background: rgba(178, 157, 219, 0.25);
  padding: var(--space-xxx-small) var(--space-xx-small);
  border-radius: 4px;
  border: 1px solid rgba(178, 157, 219, 0.4);
  transform: rotate(-90deg) translateY(-100%) translateX(-100%);
  transform-origin: left top;
  z-index: 3;
  white-space: nowrap;
}

.tree-node__detail {
    font-family: var(--font-family-inter), serif;
    font-weight: 400;
    margin-top: var(--space-xxx-small);
    padding-top: var(--space-medium);
    border-top: 4px double var(--color-ink-light);
    color: var(--color-ink-darker);
    line-height: var(--line-height-loose);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.tree-node__detail {
    font-family: var(--font-family-inter), serif;
  font-weight: 400;
  margin-top: var(--space-xxx-small);
  padding-top: var(--space-medium);
  border-top: 1px solid var(--color-ink-lighter);
  color: var(--color-ink-dark);
  line-height: var(--line-height-loose);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: all 0.3s ease;
  position: relative;
  z-index: 2;
}

.tree-node.expanded .tree-node__detail {
  max-height: 500px;
  opacity: 1;
}

.tree-node__arrow {
  position: absolute;
  bottom: -2.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 2rem;
  color: var(--color-blue-medium);
  line-height: 1;
  pointer-events: none;
}

.tree-node:last-of-type .tree-node__arrow {
  display: none;
}

.tree-connector {
  height: 2.5rem;
  width: 2px;
  background: var(--color-blue-light);
  margin: 0 auto;
}

@media (prefers-color-scheme: dark) {
  .etymology {
    background: linear-gradient(135deg,
      rgba(40, 35, 60, 0.4) 0%,
      rgba(30, 40, 50, 0.35) 50%,
      rgba(45, 35, 40, 0.4) 100%);
    border-color: rgba(178, 157, 219, 0.15);
    box-shadow:
      0 1px 3px rgba(0, 0, 0, 0.3),
      0 4px 12px rgba(178, 157, 219, 0.06);
  }

  .etymology::before {
    background-image:
      radial-gradient(circle at 20% 30%, rgba(178, 157, 219, 0.1) 0%, transparent 50%),
      radial-gradient(circle at 80% 70%, rgba(135, 206, 235, 0.1) 0%, transparent 50%);
  }

  .etymology::after {
    background-image:
      radial-gradient(circle, rgba(178, 157, 219, 0.15) 1.5px, transparent 1.5px),
      radial-gradient(circle, rgba(135, 206, 235, 0.12) 1px, transparent 1px);
  }

  .tree-node {
    border-color: rgba(178, 157, 219, 0.2);
    box-shadow:
      0 1px 3px rgba(0, 0, 0, 0.2),
      inset 0 1px 0 rgba(255, 255, 255, 0.05);
  }

  .tree-node::before {
    opacity: 0.25;
  }

  .tree-node:hover {
    border-color: rgba(178, 157, 219, 0.3);
    box-shadow:
      0 4px 12px rgba(178, 157, 219, 0.15),
      0 8px 24px rgba(0, 0, 0, 0.3),
      inset 0 1px 0 rgba(255, 255, 255, 0.08);
  }

  .tree-node:hover::before {
    opacity: 0.35;
  }
}

:root[data-theme="dark"] .etymology {
  background: linear-gradient(135deg,
    rgba(40, 35, 60, 0.4) 0%,
    rgba(30, 40, 50, 0.35) 50%,
    rgba(45, 35, 40, 0.4) 100%);
  border-color: rgba(178, 157, 219, 0.15);
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.3),
    0 4px 12px rgba(178, 157, 219, 0.06);
}

:root[data-theme="dark"] .etymology::before {
  background-image:
    radial-gradient(circle at 20% 30%, rgba(178, 157, 219, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(135, 206, 235, 0.1) 0%, transparent 50%);
}

:root[data-theme="dark"] .etymology::after {
  background-image:
    radial-gradient(circle, rgba(178, 157, 219, 0.15) 1.5px, transparent 1.5px),
    radial-gradient(circle, rgba(135, 206, 235, 0.12) 1px, transparent 1px);
}

:root[data-theme="dark"] .tree-node {
  border-color: rgba(178, 157, 219, 0.2);
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

:root[data-theme="dark"] .tree-node::before {
  opacity: 0.25;
}

:root[data-theme="dark"] .tree-node:hover {
  border-color: rgba(178, 157, 219, 0.3);
  box-shadow:
    0 4px 12px rgba(178, 157, 219, 0.15),
    0 8px 24px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

:root[data-theme="dark"] .tree-node:hover::before {
  opacity: 0.35;
}

@media (max-width: 768px) {
  .etymology {
    padding: var(--space-x-large) var(--space-medium);
    margin: var(--space-x-large) var(--space-medium);
    border-radius: 16px;
  }

  .etymology::before {
    border-radius: 16px;
  }

  .etymology__title {
    font-size: var(--font-size-x-large);
  }

  .etymology__hero p {
    font-size: var(--font-size-medium);
  }

  .tree-node {
    padding: var(--space-medium);
  }

  .tree-node__term {
    font-size: var(--font-size-large);
  }
}