/* =========================== */
/* Mint card styling (matches your tool cards) */
/* =========================== */
.card-section,
.card-section-small {
  background-color: #E6F1F1 !important; /* pale green */
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 2rem;
  border-radius: var(--size-one);
  border: 1px solid #DCE9E9; /* pale sage green */
  box-shadow: 0 4px 8px rgba(0,0,0,0.04);
  transition: all 0.3s ease;
}
.card-section:hover,
.card-section-small:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

/* =========================== */
/* Accordion (mint/base color) */
/* =========================== */
.accordion-solids {
  background-color: var(--base-color);
  border-radius: 1.25rem;
  box-shadow: 0 5px 15px rgba(0,0,0,.10);
  overflow: hidden;

  --bs-accordion-border-color: transparent;
  --bs-accordion-border-width: 0;
  --bs-accordion-btn-focus-border-color: transparent;
  --bs-accordion-btn-focus-box-shadow: none;
}

/* Remove default borders/spacers */
.accordion-solids .accordion-item {
  border: 0;
  margin: 0;
  border-radius: 0;
}

/* Collapsed header = base color */
.accordion-solids .accordion-button {
  background: var(--base-color) !important;
  color: var(--color-grey) !important;
  font-weight: 500;
  padding: 1rem 1.25rem;
  box-shadow: none !important;
  border: 0 !important;
  border-radius: 0;
  outline: none !important;
}

/* Open header = mint-white panel */
.accordion-solids .accordion-button:not(.collapsed) {
  background: #ffffff !important;
  color: var(--color-grey) !important;
}

/* Body (white) */
.accordion-solids .accordion-body {
  background: #ffffff !important;
  color: var(--color-muted-grey);
  padding: 1rem 1.25rem 1.25rem;
  border-top: 0 !important;
}

/* Chevron (dark grey) */
.accordion-solids .accordion-button::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' viewBox='0 0 16 16'%3E%3Cpath d='M3 6l5 5 5-5' stroke='%23333333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  transform: rotate(0deg);
}
.accordion-solids .accordion-button:not(.collapsed)::after {
  transform: rotate(180deg);
}

/* =========================== */
/* Approach selector (mint)    */
/* =========================== */
.choose-approach-box {
  background: var(--base-color);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  border: 1px solid #E9EFEF; /* minty edge */
}
.approach-option {
  background: #fff;
  border: 1px solid #DCE9E9;
  border-radius: 999px;
  padding: 0.5rem 1.25rem;
  cursor: pointer;
  font-weight: 500;
  color: var(--color-grey);
  transition: all 0.2s ease-in-out;
  display: inline-flex; align-items: center; gap: .4rem;
}
.approach-option input { display: none; }
.approach-option:hover {
  background: #E6F1F1;          /* mint hover */
  border-color: #D0E6E3;
}
.approach-option:has(input:checked) {
  background: #D5ECE7;          /* selected mint */
  color: var(--color-grey);
  border-color: #C3E3DC;
}

/* =========================== */
/* Tables & badges polish      */
/* =========================== */
.solids-table th, .solids-table td { vertical-align: middle; }
.solids-table thead th { font-weight: 700; }

/* Optional method/principle badges (keep if you used them elsewhere) */
.method .accordion-button { position: relative; padding-left: 3.25rem; }
.method-badge {
  position: absolute; left: 1rem; top: 50%; transform: translateY(-50%);
  width: 28px; height: 28px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: #D5ECE7; color: var(--color-grey); font-size: .9rem; font-weight: 700;
  border: 1px solid #C3E3DC;
}
.principle .accordion-button { position: relative; padding-left: 7.25rem; }
.principle-badge {
  position: absolute; left: 1rem; top: 50%; transform: translateY(-50%);
  padding: .15rem .6rem; border-radius: 999px;
  background: #E6F1F1; color: var(--color-grey); font-weight: 700; border: 1px solid #DCE9E9;
}

/* Mobile spacing */
@media (max-width: 576px) {
  .accordion-solids .accordion-button { padding: .85rem 1rem; }
  .accordion-solids .accordion-body { padding: .85rem 1rem 1rem; }
}