*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body.docs-body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

/* ── Topbar ── */
.docs-topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-height);
  background: var(--color-brand-dark);
  display: flex;
  align-items: center;
  padding: 0 var(--sp-lg);
  z-index: 200;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.topbar-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  text-decoration: none;
  color: #fff;
}

.topbar-logo img {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
}

.topbar-logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #fff;
}

.topbar-tagline {
  margin-left: auto;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.03em;
}

.topbar-app-link {
  margin-left: var(--sp-lg);
  padding: 6px 14px;
  background: var(--color-brand-primary);
  color: #fff;
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  transition: background 0.15s;
  white-space: nowrap;
}
.topbar-app-link:hover { background: var(--color-brand-secondary); }

/* Hamburger (mobile only) */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-right: var(--sp-md);
  color: #fff;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}
.nav-hamburger svg { display: block; }

/* Overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 140;
}
.nav-overlay.is-visible { display: block; }

/* ── Shell ── */
.docs-shell {
  display: flex;
  margin-top: var(--topbar-height);
  min-height: calc(100vh - var(--topbar-height));
}

/* ── Sidebar ── */
.docs-sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--color-sidebar-bg);
  position: sticky;
  top: var(--topbar-height);
  height: calc(100vh - var(--topbar-height));
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--sp-lg) 0 var(--sp-xxl);
}

.docs-sidebar::-webkit-scrollbar { width: 4px; }
.docs-sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 2px; }

.sidebar-section-label {
  display: block;
  padding: var(--sp-lg) var(--sp-lg) var(--sp-xs);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-sidebar-section);
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 9px var(--sp-lg);
  color: var(--color-sidebar-text);
  text-decoration: none;
  font-size: 0.875rem;
  transition: background 0.12s, color 0.12s;
  border-left: 3px solid transparent;
}

.sidebar-link:hover {
  background: var(--color-sidebar-hover-bg);
  color: #fff;
}

.sidebar-link.is-active {
  color: #fff;
  border-left-color: var(--color-sidebar-active);
  background: rgba(209, 20, 91, 0.12);
  font-weight: 600;
}

.sidebar-link .link-icon {
  width: 18px;
  text-align: center;
  opacity: 0.7;
  flex-shrink: 0;
}

/* ── Content ── */
.docs-content {
  flex: 1;
  min-width: 0;
  padding: var(--sp-xl) var(--sp-xl) var(--sp-xxl);
  background: var(--color-bg);
}

.docs-content-inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

/* ── Typography ── */
.docs-content h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--sp-md);
  line-height: 1.25;
  border-bottom: 3px solid var(--color-brand-primary);
  padding-bottom: var(--sp-md);
}

.docs-content h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  margin: var(--sp-xl) 0 var(--sp-md);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border);
}

.docs-content h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  margin: var(--sp-lg) 0 var(--sp-sm);
}

.docs-content p { margin-bottom: var(--sp-md); color: var(--color-text-soft); }
.docs-content li { color: var(--color-text-soft); margin-bottom: var(--sp-xs); }
.docs-content ul, .docs-content ol { padding-left: var(--sp-xl); margin-bottom: var(--sp-md); }
.docs-content a { color: var(--color-brand-primary); text-decoration: none; }
.docs-content a:hover { text-decoration: underline; }
.docs-content strong { color: var(--color-text); font-weight: 600; }

.docs-content code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: #f0f0f0;
  padding: 1px 5px;
  border-radius: 3px;
  color: #c7254e;
}

/* ── Page header ── */
.page-meta { margin-bottom: var(--sp-xl); }
.page-meta .subtitle {
  color: var(--color-text-mute);
  font-size: 1.05rem;
  margin-top: 4px;
}

/* ── Footer ── */
.docs-footer {
  background: var(--color-brand-dark);
  color: rgba(255,255,255,0.45);
  text-align: center;
  padding: var(--sp-lg);
  font-size: 0.8rem;
}
.docs-footer a { color: rgba(255,255,255,0.6); text-decoration: none; }
.docs-footer a:hover { color: #fff; }

/* ── Mobile ── */
@media (max-width: 768px) {
  .nav-hamburger { display: flex; }
  .topbar-tagline { display: none; }

  .docs-sidebar {
    position: fixed;
    left: 0;
    top: var(--topbar-height);
    z-index: 150;
    height: calc(100vh - var(--topbar-height));
    transform: translateX(-100%);
    transition: transform 0.25s ease;
  }
  .docs-sidebar.is-open { transform: translateX(0); }

  .docs-content { padding: var(--sp-lg) var(--sp-md) var(--sp-xxl); }
  .docs-content h1 { font-size: 1.5rem; }
}