/**
 * IW — Instruction Layout (Section 2).
 *
 * Compose: <section.iw-instruction-layout> > <div.iw-instruction-layout__inner>
 *   ├─ <aside.iw-instruction-sidebar>
 *   └─ <div.iw-instruction-main>
 *
 * Design: Figma 407:59031 (overview), 407:59033 (sidebar), 407:59039 (main).
 */

/* ─────────────────────────── Layout ─────────────────────────── */

.iw-instruction-layout {
  width: 100%;
  background: #ffffff;
  /* Break-out khỏi page.php .row-main wrapper. */
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
}

.iw-instruction-layout__inner {
  max-width: var(--iw-container-max);
  margin: 0 auto;
  padding: 72px var(--iw-container-pad-x) 80px;
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

/* ─────────────────────────── Sidebar ─────────────────────────── */

.iw-instruction-sidebar {
  flex-shrink: 0;
  width: 342px;
  background: #ffffff;
  border: 1px solid #e7e7e7;
  border-radius: 16px;
  padding: 24px;
  position: sticky;
  top: 24px;
  align-self: flex-start;
}

.iw-instruction-sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* Toggle button — chỉ hiện ở mobile (xem media query).
   Specificity bumped + reset margin/box-shadow vì Flatsome `button { margin-bottom: 1em }`
   (selector tag — same spec với class đơn nhưng đến trước trong cascade). */
.iw-instruction-sidebar button.iw-instruction-sidebar__toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  margin: 0;
  padding: 12px 16px;
  background: #f0f3fe;
  border: 0;
  border-radius: 8px;
  box-shadow: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 22px;
  color: #4564ed;
  cursor: pointer;
  text-align: left;
}

.iw-instruction-sidebar__toggle-label {
  flex: 1 1 0;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.iw-instruction-sidebar__toggle-icon {
  flex-shrink: 0;
  width: 12px;
  height: 12px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.18s ease-out;
}

.iw-instruction-sidebar__toggle[aria-expanded="true"] .iw-instruction-sidebar__toggle-icon {
  transform: rotate(-135deg) translate(-2px, -2px);
}

.iw-instruction-sidebar__item {
  display: block;
  padding: 13px 16px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 510; /* SF Pro Medium 510 */
  line-height: 22px;
  color: #3d3d3d;
  text-decoration: none;
  transition: background 0.12s, color 0.12s;
}

.iw-instruction-sidebar__item:hover {
  background: #f7f7f8;
  color: #4564ed;
}

.iw-instruction-sidebar__item--active,
.iw-instruction-sidebar__item--active:hover {
  background: #f0f3fe;
  color: #4564ed;
}

/* ─────────────────────────── Main ─────────────────────────── */

.iw-instruction-main {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.iw-instruction-main__header {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  justify-content: space-between;
}

.iw-instruction-main__title {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  line-height: 32px;
  color: #3d3d3d;
  flex: 1 1 0;
  min-width: 0;
}

.iw-instruction-main__share {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 8px 16px;
  margin: 0;
  background: #f7f7f8;
  border: 0;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 510;
  line-height: 20px;
  color: #3d3d3d;
  cursor: pointer;
  transition: background 0.12s;
}

.iw-instruction-main__share:hover {
  background: #e7e7e7;
}

.iw-instruction-main__share-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.iw-instruction-main__divider {
  margin: 0;
  border: 0;
  border-top: 1px solid #e7e7e7;
  opacity: 1;
}

.iw-instruction-main__body {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ─────────────────────────── Section block ─────────────────────────── */

.iw-instruction-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
  scroll-margin-top: 24px; /* anchor scroll offset */
}

.iw-instruction-section__heading {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  line-height: 28px;
  color: #3d3d3d;
  text-transform: uppercase;
}

.iw-instruction-section__card {
  background: #ffffff;
  border: 1px solid #e7e7e7;
  border-radius: 16px;
  overflow: hidden;
}

.iw-instruction-section__body {
  padding: 28px 40px;
  font-size: 16px;
  line-height: 1.5;
  color: #3d3d3d;
}

/* Rich text inside body — match Figma typography. */
.iw-instruction-section__body p {
  margin: 0 0 16px;
}

.iw-instruction-section__body p:last-child {
  margin-bottom: 0;
}

.iw-instruction-section__body a {
  color: #4564ed;
  text-decoration: underline;
}

.iw-instruction-section__body ul,
.iw-instruction-section__body ol {
  margin: 0 0 16px;
  padding-left: 24px;
}

.iw-instruction-section__body li {
  margin-bottom: 4px;
  line-height: 1.5;
}

.iw-instruction-section__body strong,
.iw-instruction-section__body b {
  font-weight: 700;
}

/* ─────────────────────────── Responsive ─────────────────────────── */

@media (max-width: 991px) {
  .iw-instruction-layout__inner {
    flex-direction: column;
    padding: 32px var(--iw-container-pad-x) 48px;
    gap: 16px;
  }
  .iw-instruction-sidebar {
    width: 100%;
    position: static;
    padding: 12px;
  }
  .iw-instruction-sidebar button.iw-instruction-sidebar__toggle {
    display: flex;
  }
  /* Nav ẩn mặc định, mở qua aria-expanded trên button anh em (sibling). */
  .iw-instruction-sidebar__toggle[aria-expanded="false"] + .iw-instruction-sidebar__nav {
    display: none;
  }
  .iw-instruction-sidebar__toggle[aria-expanded="true"] + .iw-instruction-sidebar__nav {
    margin-top: 8px;
  }
  .iw-instruction-main__title {
    font-size: 20px;
    line-height: 28px;
  }
  .iw-instruction-section__heading {
    font-size: 18px;
    line-height: 24px;
  }
  .iw-instruction-section__body {
    padding: 20px 24px;
    font-size: 14px;
  }
}

@media (max-width: 575px) {
  .iw-instruction-main__header {
    flex-direction: column;
  }
  .iw-instruction-main__share {
    align-self: flex-start;
  }
}