/* =====================================================================
   WaFloat Docs — Layout & Documentation Styles
   Builds on ../colors_and_type.css tokens
   ===================================================================== */

:root {
  --wa-green:      #25D366;
  --wa-green-dark: #128C7E;
  --wa-green-deep: #075E54;
  --wa-green-soft: #DCFCE7;
  --sidebar-w:     260px;
}

*, *::before, *::after { box-sizing: border-box; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; }

/* ---- MOBILE TOP BAR ---- */
.mobile-header {
  display: none;
  position: fixed; top: 0; left: 0; right: 0; height: 56px;
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  align-items: center; padding: 0 16px; gap: 12px;
  z-index: 60;
}
.hamburger {
  background: none; border: none; cursor: pointer;
  padding: 6px; color: var(--color-ink);
  display: grid; place-items: center; border-radius: 6px;
}
.hamburger:hover { background: var(--color-surface); }
.mobile-logo { font: 600 16px/1 var(--font-display); color: var(--color-ink); letter-spacing: -0.3px; }
.mobile-logo .dot { color: var(--wa-green); }

/* ---- OVERLAY ---- */
.sidebar-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,30,43,0.45); z-index: 39;
}
.sidebar-overlay.visible { display: block; }

/* ---- SIDEBAR ---- */
.docs-sidebar {
  position: fixed; top: 0; left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--color-surface);
  border-right: 1px solid var(--color-hairline);
  overflow-y: auto; z-index: 40;
  display: flex; flex-direction: column;
  scrollbar-width: thin;
  scrollbar-color: var(--color-hairline) transparent;
}
.docs-sidebar::-webkit-scrollbar { width: 4px; }
.docs-sidebar::-webkit-scrollbar-thumb { background: var(--color-hairline); border-radius: 2px; }

.sidebar-header {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--color-hairline);
  flex-shrink: 0;
}
.back-link {
  display: inline-flex; align-items: center; gap: 5px;
  font: 500 12px var(--font-body); color: var(--color-slate);
  margin-bottom: 14px; transition: color 150ms;
}
.back-link:hover { color: var(--color-ink); }
.sidebar-brand {
  display: flex; align-items: center; gap: 8px;
  font: 600 15px/1 var(--font-display);
  color: var(--color-ink); letter-spacing: -0.3px;
}
.sidebar-brand .logo-mark {
  width: 24px; height: 24px; border-radius: 6px;
  background: var(--wa-green);
  display: grid; place-items: center; flex-shrink: 0;
}
.sidebar-brand .dot { color: var(--wa-green); }
.docs-badge {
  font: 600 10px var(--font-body); letter-spacing: 0.5px;
  text-transform: uppercase; color: var(--color-slate);
  background: var(--color-hairline-soft);
  border: 1px solid var(--color-hairline);
  padding: 2px 6px; border-radius: 4px;
}

.sidebar-nav { padding: 16px 12px 24px; }
.nav-group { margin-bottom: 24px; }
.nav-group-label {
  display: block;
  font: 600 10px var(--font-body);
  letter-spacing: 1px; text-transform: uppercase;
  color: var(--color-stone);
  padding: 0 8px; margin-bottom: 4px;
}
.nav-link {
  display: block; padding: 7px 10px;
  font: 400 13.5px/1.3 var(--font-body); color: var(--color-slate);
  border-radius: 6px; margin-bottom: 1px;
  transition: background 120ms, color 120ms;
}
.nav-link:hover { background: var(--color-hairline-soft); color: var(--color-ink); }
.nav-link.active { background: var(--wa-green-soft); color: var(--wa-green-deep); font-weight: 500; }

/* ---- CONTENT AREA ---- */
.docs-content { margin-left: var(--sidebar-w); padding: 56px 64px 96px; }
.content-inner { max-width: 720px; }

/* ---- HEADINGS ---- */
.content-inner h1 {
  font: 500 38px/1.15 var(--font-display);
  letter-spacing: -0.8px; color: var(--color-ink);
  margin: 0 0 12px;
}
.page-lead {
  font: 400 17px/1.6 var(--font-body); color: var(--color-slate);
  margin: 0 0 44px; max-width: 600px;
}
.content-inner h2 {
  font: 500 22px/1.3 var(--font-display);
  letter-spacing: -0.3px; color: var(--color-ink);
  margin: 56px 0 16px; padding-top: 56px;
  border-top: 1px solid var(--color-hairline);
}
.content-inner h2.no-border { border-top: none; padding-top: 0; margin-top: 32px; }
.content-inner h3 { font: 600 15px/1.4 var(--font-display); color: var(--color-ink); margin: 28px 0 8px; }

/* ---- BODY TEXT ---- */
.content-inner p { font: 400 15px/1.65 var(--font-body); color: var(--color-charcoal); margin: 0 0 16px; }
.content-inner ul, .content-inner ol {
  font: 400 15px/1.65 var(--font-body); color: var(--color-charcoal);
  margin: 0 0 20px; padding-left: 24px;
}
.content-inner li { margin-bottom: 5px; }
.content-inner strong { font-weight: 600; color: var(--color-ink); }

/* ---- CODE ---- */
.content-inner code {
  font: 400 12.5px var(--font-mono);
  background: var(--color-surface); border: 1px solid var(--color-hairline);
  border-radius: 4px; padding: 2px 6px; color: var(--color-ink);
}
.content-inner pre {
  background: var(--color-canvas-dark);
  border-radius: 8px; padding: 20px 24px;
  overflow-x: auto; margin: 0 0 20px;
}
.content-inner pre code {
  background: none; border: none; padding: 0;
  color: #C8E6D4; font-size: 13px; line-height: 1.65;
}

/* ---- CALLOUTS ---- */
.callout {
  border-left: 3px solid; border-radius: 0 6px 6px 0;
  padding: 14px 16px; margin: 20px 0;
  font: 400 14px/1.55 var(--font-body);
}
.callout-note { background: var(--wa-green-soft); border-color: var(--wa-green); color: var(--wa-green-deep); }
.callout-warning { background: var(--color-warning-bg); border-color: #F4A100; color: var(--color-warning-text); }
.callout strong { font-weight: 600; }

/* ---- STEPS ---- */
.steps { list-style: none; padding: 0; margin: 0 0 24px; counter-reset: step-counter; }
.steps > li {
  counter-increment: step-counter;
  display: flex; gap: 16px; align-items: flex-start;
  padding: 16px 0; border-bottom: 1px solid var(--color-hairline-soft);
  font: 400 15px/1.6 var(--font-body); color: var(--color-charcoal);
}
.steps > li:last-child { border-bottom: none; }
.steps > li::before {
  content: counter(step-counter);
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--wa-green); color: #042F1F;
  font: 700 12px var(--font-body);
  display: grid; place-items: center;
  flex-shrink: 0; margin-top: 2px;
}

/* ---- SETTINGS TABLE ---- */
.settings-table { width: 100%; border-collapse: collapse; margin: 0 0 24px; }
.settings-table th {
  text-align: left; padding: 10px 14px;
  font: 600 11px var(--font-body); text-transform: uppercase; letter-spacing: 0.5px;
  color: var(--color-steel); background: var(--color-surface);
  border-bottom: 2px solid var(--color-hairline); white-space: nowrap;
}
.settings-table td {
  padding: 12px 14px;
  font: 400 14px/1.5 var(--font-body); color: var(--color-charcoal);
  border-bottom: 1px solid var(--color-hairline-soft);
  vertical-align: top;
}
.settings-table tr:last-child td { border-bottom: none; }
.settings-table td:first-child { font-weight: 500; color: var(--color-ink); white-space: nowrap; width: 190px; }

/* ---- PRO BADGE ---- */
.badge-pro {
  display: inline-block;
  background: var(--wa-green); color: #042F1F;
  font: 700 9px var(--font-body); letter-spacing: 0.3px; text-transform: uppercase;
  padding: 2px 7px; border-radius: 9999px;
  vertical-align: middle; margin-left: 6px;
}

/* ---- REQ LIST ---- */
.req-list { list-style: none; padding: 0; margin: 0 0 28px; }
.req-list li {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 0; border-bottom: 1px solid var(--color-hairline-soft);
  font: 400 14px/1.4 var(--font-body); color: var(--color-charcoal);
}
.req-list li:last-child { border-bottom: none; }
.req-icon {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--wa-green-soft); color: var(--wa-green-dark);
  display: grid; place-items: center; flex-shrink: 0;
}

/* ---- CHANGELOG ---- */
.cl-entry { margin-bottom: 48px; padding-bottom: 48px; border-bottom: 1px solid var(--color-hairline); }
.cl-entry:last-child { border-bottom: none; }
.cl-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.cl-version { font: 600 22px var(--font-display); letter-spacing: -0.3px; color: var(--color-ink); }
.cl-date { font: 400 14px var(--font-body); color: var(--color-slate); }
.cl-tag { font: 600 10px var(--font-body); padding: 3px 10px; border-radius: 9999px; letter-spacing: 0.3px; text-transform: uppercase; }
.cl-tag-major { background: var(--wa-green-soft); color: var(--wa-green-deep); }
.cl-tag-minor { background: var(--color-surface); color: var(--color-slate); border: 1px solid var(--color-hairline); }
.cl-tag-patch { background: var(--color-surface-soft); color: var(--color-steel); border: 1px solid var(--color-hairline-soft); }
.cl-changes { list-style: none; padding: 0; margin: 0; }
.cl-changes li {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 8px 0; border-bottom: 1px solid var(--color-hairline-soft);
  font: 400 14px/1.5 var(--font-body); color: var(--color-charcoal);
}
.cl-changes li:last-child { border-bottom: none; }
.cl-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; margin-top: 5px; }
.cl-dot-new { background: var(--wa-green); }
.cl-dot-fix { background: #016BF8; }
.cl-dot-change { background: #FF6B35; }

/* ---- MOBILE ---- */
@media (max-width: 820px) {
  .mobile-header { display: flex; }
  .docs-sidebar {
    top: 56px; bottom: 0;
    transform: translateX(-100%);
    transition: transform 220ms cubic-bezier(0.2,0,0,1);
  }
  .docs-sidebar.open { transform: translateX(0); box-shadow: 4px 0 24px rgba(0,30,43,0.12); }
  .docs-content { margin-left: 0; padding: 72px 20px 64px; }
  .content-inner h1 { font-size: 26px; letter-spacing: -0.4px; }
  .content-inner h2 { font-size: 19px; padding-top: 40px; margin-top: 40px; }
  .page-lead { font-size: 15px; margin-bottom: 32px; }
  .settings-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .settings-table td:first-child { width: 140px; }
  .docs-content { padding: 72px 20px 64px; }
}