:root {
  --bg: #0b0f14;
  --panel: #111826;
  --panel-2: #0f1622;
  --text: #e7eef7;
  --muted: #9fb0c3;
  --accent: #4da3ff;
  --accent-2: #2dd4bf;
  --border: rgba(255,255,255,0.08);
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* Layout */
.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

/* Header */
.topbar {
  background: linear-gradient(180deg, #0f1622, #0b0f14);
  padding: 40px 0 20px;
  border-bottom: 1px solid var(--border);
}

h1 {
  margin: 0;
  font-size: 2.2rem;
  letter-spacing: 0.5px;
}

.subtitle {
  color: var(--muted);
  margin-top: 6px;
}

/* Search */
.search-wrapper {
  display: flex;
  gap: 10px;
  margin-top: 20px;
  flex-wrap: wrap;
}

#faqSearch {
  flex: 1;
  min-width: 240px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  outline: none;
  transition: border 0.2s ease;
}

#faqSearch:focus {
  border-color: var(--accent);
}

button {
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
  transition: 0.2s ease;
}

button:hover {
  border-color: var(--accent);
}

/* Filters */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.filter-pill {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.filter-pill:hover {
  border-color: var(--accent);
  color: var(--text);
}

.filter-pill.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Intro */
.intro {
  margin: 30px 0;
  color: var(--muted);
}

/* FAQ Container */
.faq-container {
  margin: 30px 0 80px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* FAQ Item */
.faq-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

/* Question */
.faq-question {
  padding: 16px 18px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  gap: 12px;
}

.faq-question:hover {
  background: rgba(255,255,255,0.03);
}

.faq-question::after {
  content: "+";
  font-size: 1.2rem;
  color: var(--accent);
  transition: transform 0.2s ease;
}

.faq-item.open .faq-question::after {
  content: "-";
}

/* Answer */
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.25s ease;
  padding: 0 18px;
  color: var(--muted);
}

.faq-item.open .faq-answer {
  padding: 0 18px 16px;
  max-height: 500px;
}

/* Category tag */
.faq-category {
  font-size: 0.75rem;
  color: var(--accent-2);
  margin-top: 6px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 30px 0;
  color: var(--muted);
  text-align: center;
}

/* Responsive */
@media (max-width: 600px) {
  h1 {
    font-size: 1.6rem;
  }

  .faq-question {
    font-size: 0.95rem;
  }
}

/* Accessibility focus */
.faq-question:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Smooth fade-in (for JS-rendered items) */
.faq-item {
  animation: fadeIn 0.25s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}