/* sections.css */
.sections-area {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--c-page);
}

.form-section {
  background: var(--c-bg);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-sec);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--c-line-md);
  transition: box-shadow 0.2s, border-color 0.2s;
}
.form-section.open {
  box-shadow: 0 4px 24px rgba(26,143,209,0.14);
  border-color: var(--c-blue-pale);
}

.section__header {
  display: flex;
  align-items: stretch;
  cursor: pointer;
  user-select: none;
  min-height: 48px;
  transition: background 0.15s;
  position: relative;
}
.section__header:hover { background: var(--c-blue-lt); }
.form-section.open .section__header {
  background: var(--c-blue-lt);
  border-bottom: 2px solid var(--c-blue-pale);
}

.sec-num {
  width: 56px;
  background: var(--c-line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--ff-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--c-ink-3);
  flex-shrink: 0;
  border-right: 2px solid var(--c-line-md);
  transition: all 0.2s;
  letter-spacing: 0.04em;
}
.form-section.open .sec-num {
  background: linear-gradient(135deg, var(--c-blue) 0%, var(--c-green) 100%);
  color: #fff;
  border-right-color: transparent;
}

.sec-title {
  font-family: var(--ff-title);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--c-ink-2);
  flex: 1;
  display: flex;
  align-items: center;
  padding: 0 16px;
  transition: color 0.15s;
}
.form-section.open .sec-title { color: var(--c-blue-dk); }

.sec-chevron {
  width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.sec-chevron svg {
  transition: transform 0.25s ease;
  color: var(--c-ink-4);
}
.form-section.open .sec-chevron svg {
  transform: rotate(180deg);
  color: var(--c-blue);
}

.section__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.form-section.open .section__body { max-height: 5000px; }
.section__inner { padding: 16px 18px 20px; }