* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  background: var(--document-bg);
  color: var(--document-text);
}

.page {
  min-height: 100vh;
  padding: 40px 16px 56px;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
}

/* HERO (UPGRADED) */

.hero {
  max-width: 100vw;
  background: radial-gradient(
    circle at top left,
    var(--hero-gradient-start),
    var(--hero-gradient-end)
  );
  border: 1px solid var(--document-border-control);
  border-radius: 14px;
  padding: 18px 18px 24px;
  margin-bottom: 22px;
  box-shadow: var(--document-shadow-soft);
}

.hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.brand img {
  height: 40px;
  display: block;
}

.controls {
  display: flex;
  gap: 10px;
  align-items: center;
}

#languageSelect {
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--document-border-control);
  background: var(--document-panel);
  color: var(--document-text);
  padding: 0 10px;
}

#themeToggle {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--document-border-control);
  background: var(--document-panel);
  color: var(--document-text);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all 140ms ease;
}

#themeToggle:hover {
  background: var(--document-panel-2);
  border-color: var(--document-border-strong);
}

.hero-content {
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--document-accent-soft-bg);
  color: var(--document-accent-soft);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  margin-bottom: 10px;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: 2.5rem;
  font-weight: 700;
  color: #ffffff;
}

.hero-sub {
  margin: 0 auto;
  max-width: 720px;
  color: #b0b4bb;
  font-size: 0.95rem;
  line-height: 1.6;
}

.hero-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 14px;
}

.hero-links a {
  color: var(--document-accent-soft);
  font-size: 0.9rem;
}

.text-minor {
  display: block;
  margin-top: 6px;
  color: var(--document-text-muted-3);
  font-size: 0.85rem;
}

/* SEARCH */

.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--document-panel);
  border: 1px solid var(--document-border-control);
  border-radius: 8px;
  padding: 12px 14px;
  margin: 24px auto 10px;
  max-width: 720px;
  transition: all 140ms ease;
}

.search-box:focus-within {
  border-color: var(--document-accent-soft);
  background: var(--document-panel-2);
}

.search-box i {
  color: var(--document-text-muted-4);
}

.search-box input {
  border: none;
  outline: none;
  width: 100%;
  font-size: 0.95rem;
  background: transparent;
  color: var(--document-text);
}

/* FAQ */

.faq-wrapper {
  background: var(--document-panel);
  border: 1px solid var(--document-border-control);
  border-radius: 10px;
  margin-top: 18px;
  overflow: hidden;
  box-shadow: var(--document-shadow-soft);
}

.faq-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--document-border-subtle);
  background: var(--document-panel-2);
}

.faq-header .icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  background: var(--document-accent-soft-bg);
  color: var(--document-accent-soft);
}

.faq-header h2 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
}

.faq-question {
  width: 100%;
  border: none;
  background: var(--document-panel);
  color: var(--document-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  text-align: left;
  padding: 16px 18px;
  cursor: pointer;
  border-top: 1px solid var(--document-border-subtle);
  transition: background 120ms ease;
}

.faq-question:hover {
  background: var(--document-hover);
}

.faq-question .left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-question .title {
  font-size: 0.95rem;
  font-weight: 500;
}

.faq-question .chevron {
  transition: transform 0.2s ease;
}

.faq-item.active .chevron {
  transform: rotate(180deg);
}

.faq-item i {
  color: var(--document-icon-subtle);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
  background: var(--document-panel-1);
}

.faq-answer-content {
  padding: 0 18px 16px 46px;
  font-size: 0.9rem;
  color: var(--document-text-muted-2);
  line-height: 1.65;
}

.footer-note {
  margin-top: 26px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--document-text-muted-3);
}

a {
  color: var(--document-accent-soft);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

@media (max-width: 640px) {
  .page {
    padding: 24px 12px 40px;
  }

  .hero {
    padding: 14px;
  }

  .hero h1 {
    font-size: 1.5rem;
  }

  .faq-question {
    padding: 14px;
  }

  .faq-answer-content {
    padding: 0 14px 14px 38px;
  }

  .faq-header {
    padding: 14px;
  }
}

.doc-hero {
  padding: 24px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--hero-gradient-start), var(--hero-gradient-end));
  margin-bottom: 24px;
  border: 1px solid var(--document-border-control);
}

.doc-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.doc-logo {
  height: 42px;
}

.doc-sub {
  margin-top: 6px;
  color: var(--document-text-muted-3);
}

.doc-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 20px;
}

.doc-sidebar {
  position: sticky;
  top: 20px;
  height: fit-content;
  background: var(--document-panel);
  border: 1px solid var(--document-border-control);
  border-radius: 10px;
  padding: 16px;
}

.doc-sidebar h3 {
  margin-top: 0;
  font-size: 0.95rem;
}

.doc-sidebar a {
  display: block;
  padding: 6px 0;
  font-size: 0.9rem;
  color: var(--document-text-muted-2);
}

.doc-sidebar a:hover {
  color: var(--document-text);
}

.doc-content section {
  margin-bottom: 28px;
}

.doc-content h2 {
  margin-bottom: 10px;
  font-size: 1.4rem;
}

.doc-content h3 {
  margin-top: 18px;
  margin-bottom: 6px;
  font-size: 1.05rem;
}

.notice {
  border-radius: 8px;
  padding: 12px 14px;
  margin: 14px 0;
  font-size: 0.9rem;
  border: 1px solid transparent;
}

.notice.info {
  background: var(--notice-info-bg);
  border-color: var(--notice-info-border);
  color: var(--notice-info-text);
}

.notice.success {
  background: var(--notice-success-bg);
  border-color: var(--notice-success-border);
  color: var(--notice-success-text);
}

.notice.warning {
  background: var(--notice-warning-bg);
  border-color: var(--notice-warning-border);
  color: var(--notice-warning-text);
}

.notice.danger {
  background: var(--notice-danger-bg);
  border-color: var(--notice-danger-border);
  color: var(--notice-danger-text);
}

.callout {
  padding: 12px 14px;
  border-left: 3px solid var(--document-accent-soft);
  background: var(--document-panel-2);
  border-radius: 6px;
  margin: 14px 0;
  font-size: 0.9rem;
}

.bullet {
  display: inline-block;
  margin: 0 6px;
}

@media (max-width: 900px) {
  .doc-layout {
    grid-template-columns: 1fr;
  }

  .doc-sidebar {
    position: relative;
  }
}