/* ==========================================================================
   InvestQ FAQ – Design tokens & c-faq component
   Based on faq-filtering-design.md (Chip, Search input, Accordion)
   ========================================================================== */

:root {
  /* Colors */
  --c-faq-surface: #FAF9F9;
  --c-faq-surface-container-high: #E8E8E8;
  --c-faq-on-surface: #1A1C1C;
  --c-faq-on-surface-variant: #50525B;
  --c-faq-primary: #1A1C1C;
  --c-faq-accent-a1: #0047F8;
  --c-faq-accent-container: #DDE1FF;
  --c-faq-on-accent-container: #001356;
  --c-faq-outline-variant: #C5C6D1;
  --c-faq-inverted: #FFFFFF;
  --c-faq-error: #B00020;

  /* Spacing */
  --c-faq-space-02: 4px;
  --c-faq-space-03: 8px;
  --c-faq-space-04: 12px;
  --c-faq-space-05: 16px;
  --c-faq-space-06: 20px;
  --c-faq-space-07: 32px;
  --c-faq-space-09: 64px;
  --c-faq-paragraph: 24px;

  /* Border radius */
  --c-faq-radius-xs: 4px;
  --c-faq-radius-lg: 16px;
  --c-faq-radius-xl: 24px;
  --c-faq-radius-capsule: 99999px;

  /* Typography */
  --c-faq-font: "Nimbus Sans D OT", system-ui, -apple-system, sans-serif;
  --c-faq-label-01: 18px;
  --c-faq-label-01-lh: 22.79px;
  --c-faq-body-compact: 16px;
  --c-faq-body-compact-lh: 22px;
  --c-faq-heading-06: 20.26px;
  --c-faq-heading-06-lh: 24.31px;
  --c-faq-heading-07: 16.24px;
  --c-faq-helper: 14.22px;
  --c-faq-helper-lh: 18px;

  /* Focus */
  --c-faq-focus-ring: 0 0 0 4px var(--c-faq-accent-a1), 0 0 0 2px var(--c-faq-inverted);
}

/* --------------------------------------------------------------------------
   Base & layout
   -------------------------------------------------------------------------- */

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

body {
  margin: 0;
  font-family: var(--c-faq-font);
  font-size: var(--c-faq-body-compact);
  line-height: var(--c-faq-body-compact-lh);
  color: var(--c-faq-on-surface);  
  min-height: 100vh;
}

.c-faq__item-content ul {
    margin-bottom: 0;
}

.c-faq__item-content ul li{
    margin-bottom: 4px;
    font-size: 16px;
    line-height: 24px;
}
.c-faq__h2 {
  font-size: var(--c-faq-heading-06);
}

.c-faq {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--c-faq-space-07) var(--c-faq-space-05);
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.c-faq__header {
  margin-bottom: var(--c-faq-paragraph);
}

.c-faq__title {
  margin: 0 0 var(--c-faq-space-03);
  font-size: var(--c-faq-heading-06);
  line-height: var(--c-faq-heading-06-lh);
  font-weight: 600;
  color: var(--c-faq-on-surface);
}

.c-faq__desc {
  margin: 0;
  font-size: var(--c-faq-body-compact);
  color: var(--c-faq-on-surface-variant);
}

/* --------------------------------------------------------------------------
   Controls: search + categories
   -------------------------------------------------------------------------- */

.c-faq__controls {
  display: flex;
  flex-direction: column;
  gap: var(--c-faq-space-05);
  margin-bottom: var(--c-faq-space-05);
}

/* Search (design: Search input – white bg, 4px radius, leading icon, clear) */
.c-faq__search {
  display: flex;
  align-items: center;
  gap: var(--c-faq-space-03);
  padding: var(--c-faq-space-02) var(--c-faq-space-03);
  background: var(--c-faq-inverted);
  border: 1px solid var(--c-faq-outline-variant);
  border-radius: var(--c-faq-radius-xs);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.c-faq__search:hover {
  border-color: var(--c-faq-on-surface-variant);
}

.c-faq__search:focus-within {
  border-color: var(--c-faq-accent-a1);
  box-shadow: var(--c-faq-focus-ring);
}

.c-faq__search-icon {
  flex-shrink: 0;
  font-size: var(--c-faq-helper);
  color: var(--c-faq-on-surface-variant);
}

.c-faq__search-input {
  flex: 1;
  min-width: 0;
  padding: var(--c-faq-space-02) 0;
  font-family: inherit;
  font-size: var(--c-faq-body-compact);
  line-height: var(--c-faq-body-compact-lh);
  color: var(--c-faq-on-surface);
  background: transparent;
  border: none;
  outline: none;
}

.c-faq__search-input::placeholder {
  color: var(--c-faq-on-surface-variant);
}

.c-faq__search-clear {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  line-height: 1;
  color: var(--c-faq-on-surface-variant);
  background: transparent;
  border: none;
  border-radius: var(--c-faq-radius-xs);
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease;
}

.c-faq__search-clear:hover {
  color: var(--c-faq-on-surface);
  background: var(--c-faq-surface-container-high);
}

.c-faq__search-clear:focus-visible {
  outline: none;
  box-shadow: var(--c-faq-focus-ring);
}

/* Category pills (design: Chip – capsule, surface-container-high, active = accent) */
.c-faq__categories {
  display: flex;
  flex-wrap: wrap;
  gap: var(--c-faq-space-03);
}

.c-faq__category {
  padding: var(--c-faq-space-02) var(--c-faq-space-03);
  font-family: inherit;
  font-size: var(--c-faq-body-compact);
  line-height: var(--c-faq-body-compact-lh);
  color: var(--c-faq-on-surface);
  background: var(--c-faq-surface-container-high);
  border: 1px solid var(--c-faq-outline-variant);
  border-radius: var(--c-faq-radius-capsule);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: var(--c-faq-space-02);
}

.c-faq__category:hover {
  background: #ddd;
  border-color: var(--c-faq-on-surface-variant);
}

.c-faq__category.is-active {
  background: var(--c-faq-accent-container);
  border-color: var(--c-faq-accent-a1);
  color: var(--c-faq-on-accent-container);
}

.c-faq__category:focus-visible {
  outline: none;
  box-shadow: var(--c-faq-focus-ring);
}

.c-faq__category:has(.is-zero) {
  opacity: 0.5;
}

.c-faq__category-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  color: var(--c-faq-on-surface);
  background: var(--c-faq-inverted);
  border-radius: var(--c-faq-radius-capsule);
  transition: background 0.15s ease, color 0.15s ease;
  margin-left: 4px;
}

.c-faq__category.is-active .c-faq__category-count {
  background: var(--c-faq-inverted);
  color: var(--c-faq-on-accent-container);
}

.c-faq__category-count.is-zero {
  color: var(--c-faq-on-surface-variant);
  opacity: 0.6;
}

/* --------------------------------------------------------------------------
   Results summary
   -------------------------------------------------------------------------- */

.c-faq__results {
  margin-bottom: var(--c-faq-space-03);
}

.c-faq__count {
  font-size: var(--c-faq-helper);
  line-height: var(--c-faq-helper-lh);
  color: var(--c-faq-on-surface-variant);
}

/* --------------------------------------------------------------------------
   FAQ list & items (Accordion)
   design: header surface-container-high, active = accent-container, content inverted
   -------------------------------------------------------------------------- */

.c-faq__list {
  display: flex;
  flex-direction: column;
  gap: 8px
}

.c-faq__list section {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-bottom: 2px solid var(--c-faq-surface-container-high);
}

.c-faq__list section[hidden] {
  display: none;
}

.c-faq__item {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--c-faq-outline-variant);
  background: var(--c-faq-inverted);
}

.c-faq__item[hidden] {
  display: none !important;
}

.c-faq__item-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--c-faq-space-03);
  /* padding: var(--c-faq-space-05) var(--c-faq-space-05); */
  padding: 8px 16px;
  font-family: inherit;
  font-size: var(--c-faq-label-01);
  line-height: var(--c-faq-label-01-lh);
  font-weight: 500;
  text-align: left;
  color: var(--c-faq-on-surface);
  background: var(--c-faq-surface-container-high);
  border: none;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.c-faq__item-trigger:hover {
  background: #ddd;
}

.c-faq__item-trigger:focus-visible {
  outline: none;
  box-shadow: var(--c-faq-focus-ring);
}

/* .c-faq__item.is-open .c-faq__item-trigger {
  background: var(--c-faq-accent-container);
  border-color: var(--c-faq-accent-a1);
  color: var(--c-faq-on-accent-container);
} */

.c-faq__item-q {
  flex: 1;
  min-width: 0;
}

.c-faq__item-chevron {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  position: relative;
}

.c-faq__item-chevron::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  margin: -4px 0 0 -4px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.c-faq__item.is-open .c-faq__item-chevron::after {
  transform: rotate(-135deg);
}

.c-faq__item-content {
  padding: var(--c-faq-space-05);
  background: var(--c-faq-inverted);
  border: none;
  
}

.c-faq__item-content p {
  margin: 0;
  font-size: var(--c-faq-body-compact);
  line-height: var(--c-faq-body-compact-lh);
  color: var(--c-faq-on-surface);
}

.c-faq__item-content p + p {
  margin-top: var(--c-faq-space-03);
}

/* --------------------------------------------------------------------------
   Category collapsible headers
   -------------------------------------------------------------------------- */

.c-faq__category-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--c-faq-space-05) 0;
  background: none;
  border: none;
  /* border-bottom: 2px solid var(--c-faq-surface-container-high); */
  cursor: pointer;
  text-align: left;
  margin-bottom: 0;
  transition: opacity 0.2s;
}

.c-faq__category-header:hover {
  opacity: 0.7;
}

.c-faq__category-header:focus-visible {
  outline: 2px solid var(--c-faq-accent-a1);
  outline-offset: 2px;
}

.c-faq__category-header .c-faq__h2, .c-faq__category-header .c-faq__h3 {
  margin: 0;
  flex: 1;
}

.c-faq__category-chevron {
  width: 24px;
  height: 24px;
  position: relative;
  flex-shrink: 0;
  margin-left: var(--c-faq-space-04);
}

.c-faq__category-chevron::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--c-faq-on-surface);
  border-bottom: 2px solid var(--c-faq-on-surface);
  transform: translate(-50%, -75%) rotate(45deg);
  transition: transform 0.3s ease;
}

.c-faq__category-header[aria-expanded="false"] .c-faq__category-chevron::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.c-faq__category-content {
  overflow: hidden;
  transition: max-height 0.3s ease, opacity 0.3s ease;
  margin-top: 8px;
}

.c-faq__category-content.is-collapsed {
  max-height: 0 !important;
  opacity: 0;
  margin-bottom: 0;
  margin-top: 0;
}

.c-faq__category-content .c-faq__h2 {
  font-size: var(--c-faq-heading-07);
  margin-left : 16px;
}

.c-faq__category-content .c-faq__h3 {
  font-size: var(--c-faq-heading-07);
  margin-left : 16px;
}

.c-faq__category-content > .c-faq__category-content { 
  margin-left : 16px; 

}

.c-faq__category-content .c-faq__item {
  margin-bottom: var(--c-faq-space-04);
}

/* --------------------------------------------------------------------------
   Hidden attribute override
   -------------------------------------------------------------------------- */

[hidden] {
  display: none !important;
}

.c-faq__list section[hidden] {
  display: none !important;
}

/* --------------------------------------------------------------------------
   Empty state
   -------------------------------------------------------------------------- */

.c-faq__empty {
  padding: var(--c-faq-space-07);
  text-align: center;
  background: var(--c-faq-surface-container-high);
  border: 1px dashed var(--c-faq-outline-variant);
  border-radius: var(--c-faq-radius-xs);
}

.c-faq__empty[hidden] {
  display: none !important;
}

.c-faq__empty-text {
  margin: 0 0 var(--c-faq-space-03);
  font-size: var(--c-faq-label-01);
  color: var(--c-faq-on-surface);
}

.c-faq__empty-hint {
  margin: 0;
  font-size: var(--c-faq-helper);
  color: var(--c-faq-on-surface-variant);
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (min-width: 600px) {
  .c-faq {
    padding: 16px 32px;
  }

  .c-faq__title {
    font-size: 36px;
  }

  .c-faq__h2 {
    font-size: 18px;
}
}

@media (max-width: 599px) {  
  .c-faq__h2 {
    font-size: 18px;
}

.c-faq__category-content .c-faq__h2 {
    font-size: 16;
    
}

.c-faq__category { 
    font-size: 14px;
  
  }

  .c-faq__category-count {
    padding: 0px 3px;
    font-size: 10px;  
    line-height: 1;
    margin-left: 2px;
}

.c-faq {    
    padding: 16px 0;
}

}