/* WebGuideBD AI Academy — W3Schools-inspired learning UI
   Accent green #04AA6D · dark bar #282A35 · sidenav #E7E9EB */

:root {
  --wgba-green: #04aa6d;
  --wgba-green-hover: #059862;
  --wgba-green-soft: #d9eee1;
  --wgba-green-mint: #e7f3ed;
  --wgba-dark: #282a35;
  --wgba-dark-2: #1d2a35;
  --wgba-bg: #ffffff;
  --wgba-sidenav: #e7e9eb;
  --wgba-surface: #ffffff;
  --wgba-ink: #000000;
  --wgba-muted: #555555;
  --wgba-border: #d4d4d4;
  --wgba-example: #e7e9eb;
  --wgba-code-bg: #e7e9eb;
  --wgba-code-ink: #000000;
  --wgba-danger: #a94442;
  --wgba-ok: #04aa6d;
  --wgba-radius: 5px;
  --wgba-max: 1400px;
  --wgba-prose: 900px;
  --wgba-top-h: 90px;
  --wgba-sub-h: 44px;
  --wgba-font: "Source Sans 3", "Noto Sans Bengali", "Segoe UI", Tahoma, Arial, sans-serif;
  --wgba-mono: "Source Code Pro", "IBM Plex Mono", Consolas, "Courier New", monospace;
  color-scheme: light;
}

[data-wgba-theme="dark"] {
  --wgba-bg: #1d2a35;
  --wgba-sidenav: #38444d;
  --wgba-surface: #1d2a35;
  --wgba-ink: #ddd;
  --wgba-muted: #bbb;
  --wgba-border: #4b5a64;
  --wgba-example: #38444d;
  --wgba-code-bg: #38444d;
  --wgba-code-ink: #ddd;
  --wgba-green-soft: #0b3d2e;
  --wgba-green-mint: #0f3328;
  --wgba-dark: #0d1520;
  color-scheme: dark;
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

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

html { scroll-behavior: smooth; }

.wgba-body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--wgba-font);
  font-size: 17px;
  line-height: 1.55;
  background: var(--wgba-bg);
  color: var(--wgba-ink);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

.wgba-body img,
.wgba-body video,
.wgba-body svg,
.wgba-body iframe {
  max-width: 100%;
  height: auto;
}

.wgba-body a {
  color: var(--wgba-ink);
  text-decoration: underline;
}

.wgba-body a:hover {
  color: var(--wgba-green);
}

.wgba-skip {
  position: absolute;
  left: -999px;
  top: 0;
}
.wgba-skip:focus {
  left: 8px;
  top: 8px;
  z-index: 200;
  background: #fff;
  color: #000;
  padding: 8px 12px;
  border: 2px solid var(--wgba-green);
}

.wgba-wrap {
  width: min(100% - 32px, var(--wgba-max));
  margin-inline: auto;
}

/* —— Top bar (white, like W3) —— */
.wgba-top {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #ffffff;
  border-bottom: 1px solid #e7e9eb;
  height: var(--wgba-top-h);
  max-height: var(--wgba-top-h);
  overflow: visible; /* gear dropdown must paint below the bar */
}
.admin-bar .wgba-top { top: 32px; }
@media screen and (max-width: 782px) {
  .admin-bar .wgba-top { top: 46px; }
}

[data-wgba-theme="dark"] .wgba-top {
  background: #1d2a35;
  border-bottom-color: #38444d;
}

.wgba-top-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  height: var(--wgba-top-h);
  max-height: var(--wgba-top-h);
  max-width: var(--wgba-max);
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
  overflow: visible;
  box-sizing: border-box;
}

.wgba-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none !important;
  color: #000 !important;
  font-weight: 700;
  font-size: 18px;
  white-space: nowrap;
  flex: 0 0 auto;
  max-width: min(360px, 52vw);
  max-height: 78px;
  overflow: hidden;
  line-height: 0;
}

[data-wgba-theme="dark"] .wgba-brand { color: #fff !important; }

/* Beat theme/Elementor `img { max-width:100%; height:auto }` which otherwise
   expands the lockup and crushes the nav (page overflow). */
body.wgba-body .wgba-top .wgba-brand img.wgba-brand-logo,
body.wgba-body header.wgba-top a.wgba-brand > img,
.wgba-top .wgba-brand img.wgba-brand-logo,
.wgba-brand img.wgba-brand-logo {
  display: block !important;
  height: 70px !important;
  width: auto !important;
  max-width: 320px !important;
  max-height: 70px !important;
  min-height: 0 !important;
  object-fit: contain !important;
  object-position: left center !important;
  flex-shrink: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
  border: 0 !important;
  box-shadow: none !important;
}

.wgba-brand-logo-dark { display: none !important; }

[data-wgba-theme="dark"] .wgba-brand-logo-light { display: none !important; }
[data-wgba-theme="dark"] .wgba-brand-logo-dark { display: block !important; }

.wgba-brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--wgba-green);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.wgba-brand-text span { color: var(--wgba-green); }

.wgba-nav {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 4px;
  margin-left: auto;
  min-width: 0;
  flex: 0 0 auto;
  justify-content: flex-end;
}
.wgba-nav-meta {
  flex: 0 0 auto;
}

.wgba-nav a,
.wgba-linkish {
  color: #000 !important;
  text-decoration: none !important;
  background: none;
  border: 0;
  font: inherit;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  padding: 7px 10px;
  border-radius: var(--wgba-radius);
}

[data-wgba-theme="dark"] .wgba-nav a,
[data-wgba-theme="dark"] .wgba-linkish { color: #ddd !important; }

.wgba-nav a:hover,
.wgba-nav a.is-active,
.wgba-linkish:hover {
  background: #f1f1f1;
  color: #000 !important;
}

[data-wgba-theme="dark"] .wgba-nav a:hover,
[data-wgba-theme="dark"] .wgba-nav a.is-active,
[data-wgba-theme="dark"] .wgba-linkish:hover {
  background: #38444d;
  color: #fff !important;
}

.wgba-inline-form { display: inline; margin: 0; }

/* Gear account / settings menu (dashboard, logout, theme) */
.wgba-account {
  position: relative;
  flex: 0 0 auto;
  margin-left: 4px;
}
.wgba-gear {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--wgba-border);
  border-radius: 10px;
  background: #fff;
  color: #141c16;
  cursor: pointer;
  flex-shrink: 0;
}
[data-wgba-theme="dark"] .wgba-gear {
  background: #1d2a35;
  color: #f7f1e4;
  border-color: #38444d;
}
.wgba-gear:hover,
.wgba-account.is-open .wgba-gear {
  background: #f1f1f1;
}
[data-wgba-theme="dark"] .wgba-gear:hover,
[data-wgba-theme="dark"] .wgba-account.is-open .wgba-gear {
  background: #38444d;
}
.wgba-gear-ico { display: block; }

.wgba-account-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 70;
  min-width: 200px;
  padding: 8px;
  border: 1px solid var(--wgba-border);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
}
[data-wgba-theme="dark"] .wgba-account-menu {
  background: #1d2a35;
  border-color: #38444d;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}
.wgba-account-menu[hidden] { display: none !important; }

.wgba-account-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  margin: 0;
  padding: 10px 12px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: #141c16 !important;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  text-decoration: none !important;
  cursor: pointer;
  box-sizing: border-box;
}
[data-wgba-theme="dark"] .wgba-account-item { color: #f1f1f1 !important; }
.wgba-account-item:hover,
.wgba-account-item.is-active {
  background: #f1f1f1;
}
[data-wgba-theme="dark"] .wgba-account-item:hover,
[data-wgba-theme="dark"] .wgba-account-item.is-active {
  background: #38444d;
}
.wgba-account-form { margin: 0; }
.wgba-account-sep {
  height: 1px;
  margin: 6px 4px;
  background: var(--wgba-border);
}
[data-wgba-theme="dark"] .wgba-account-sep { background: #38444d; }

.wgba-theme-toggle.wgba-account-item {
  border: 0;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}
.wgba-theme-ico {
  display: none;
  width: 16px;
  height: 16px;
  line-height: 0;
  flex: 0 0 auto;
}
.wgba-theme-ico svg { display: block; }
/* Label shows the mode you can switch TO — show that mode's icon. */
[data-wgba-theme="light"] .wgba-theme-ico-moon { display: block; }
[data-wgba-theme="dark"] .wgba-theme-ico-sun { display: block; }
.wgba-theme-suffix { font-weight: 500; opacity: 0.85; }

.wgba-account-login {
  background: var(--wgba-green) !important;
  color: #fff !important;
  justify-content: center;
}
.wgba-account-login:hover {
  background: var(--wgba-green-hover) !important;
  color: #fff !important;
}
[data-wgba-theme="dark"] .wgba-account-login {
  color: #fff !important;
}

.wgba-gear:focus-visible,
.wgba-account-item:focus-visible {
  outline: 3px solid #ffc107;
  outline-offset: 2px;
}

.wgba-top-inner { position: relative; }

/* —— Second topic bar (W3-style dark strip) —— */
.wgba-subnav {
  position: sticky;
  top: var(--wgba-top-h);
  z-index: 45;
  height: var(--wgba-sub-h);
  background: var(--wgba-dark);
  border-bottom: 1px solid transparent;
}
.admin-bar .wgba-subnav { top: calc(32px + var(--wgba-top-h)); }
@media screen and (max-width: 782px) {
  .admin-bar .wgba-subnav { top: calc(46px + var(--wgba-top-h)); }
}
[data-wgba-theme="dark"] .wgba-subnav {
  background: #0d1520;
  border-bottom-color: #38444d;
}

.wgba-subnav-inner {
  display: flex;
  align-items: center;
  gap: 2px;
  height: var(--wgba-sub-h);
  max-width: var(--wgba-max);
  margin: 0 auto;
  padding: 0 16px;
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  box-sizing: border-box;
  mask-image: linear-gradient(90deg, #000 0%, #000 calc(100% - 28px), transparent 100%);
}
.wgba-subnav-inner::-webkit-scrollbar { display: none; }
.wgba-subnav-inner.is-at-end {
  mask-image: none;
}

.wgba-subnav a {
  flex: 0 0 auto;
  color: #fff !important;
  text-decoration: none !important;
  font-size: 15px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--wgba-radius);
  white-space: nowrap;
}
.wgba-subnav a:hover,
.wgba-subnav a.is-active {
  background: var(--wgba-green);
  color: #fff !important;
}
.wgba-subnav a:focus-visible {
  outline: 2px solid #ffc107;
  outline-offset: 2px;
}

@media (max-width: 900px) {
  .wgba-top-inner { flex-wrap: nowrap; gap: 10px; padding: 0 12px; }
  .wgba-account { margin-left: 0; }
  .wgba-nav-meta { gap: 0; }
  .wgba-nav-meta a { padding: 7px 8px; font-size: 13px; }
  .wgba-top .wgba-brand img.wgba-brand-logo {
    height: 70px !important;
    max-height: 70px !important;
    max-width: min(280px, 48vw) !important;
  }
  .wgba-subnav-inner { padding: 0 10px; }
  .wgba-subnav a { padding: 8px 12px; font-size: 14px; }
}

/* —— Buttons (W3 green) —— */
.wgba-btn {
  display: inline-block;
  background: var(--wgba-green);
  color: #fff !important;
  border: none;
  border-radius: var(--wgba-radius);
  padding: 10px 18px;
  font: inherit;
  font-size: 17px;
  font-weight: 600;
  text-decoration: none !important;
  cursor: pointer;
  text-align: center;
  line-height: 1.3;
}

.wgba-btn:hover {
  background: var(--wgba-green-hover);
  color: #fff !important;
}

.wgba-btn:focus-visible,
.wgba-theme-toggle:focus-visible,
.wgba-sidebar-toggle:focus-visible,
.wgba-body input:focus-visible,
.wgba-body textarea:focus-visible,
.wgba-body button:focus-visible {
  outline: 3px solid #ffc107;
  outline-offset: 2px;
}

.wgba-btn-ghost,
.wgba-btn-prev {
  background: #fff;
  color: #000 !important;
  border: 1px solid #000;
}

.wgba-btn-ghost:hover,
.wgba-btn-prev:hover {
  background: #f1f1f1;
  color: #000 !important;
}

[data-wgba-theme="dark"] .wgba-btn-ghost,
[data-wgba-theme="dark"] .wgba-btn-prev {
  background: transparent;
  color: #ddd !important;
  border-color: #ddd;
}

.wgba-btn-small {
  padding: 8px 16px;
  font-size: 15px;
}

.wgba-btn-login {
  background: var(--wgba-green);
  color: #fff !important;
  border-radius: 25px;
  padding: 8px 20px;
  text-decoration: none !important;
  font-weight: 600;
}
.wgba-btn-login:hover { background: var(--wgba-green-hover); color: #fff !important; }

.wgba-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0;
}

.wgba-pager {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  margin: 28px 0 12px;
  max-width: var(--wgba-prose);
}

/* —— Main —— */
.wgba-main { padding: 0; min-height: 60vh; }

.wgba-body h1,
.wgba-body h2,
.wgba-body h3 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--wgba-ink);
  font-family: var(--wgba-font);
}

.wgba-body h1 {
  font-size: 36px;
  margin: 10px 0 16px;
}

.wgba-body h2 {
  font-size: 26px;
  margin: 28px 0 12px;
}

.wgba-body h3 {
  font-size: 20px;
  margin: 22px 0 10px;
}

.wgba-eyebrow {
  margin: 0 0 6px;
  color: var(--wgba-muted);
  font-size: 15px;
  font-weight: 600;
}

.wgba-lead {
  font-size: 18px;
  max-width: 40rem;
  color: var(--wgba-muted);
  margin: 0 0 12px;
}

.wgba-muted { color: var(--wgba-muted); }

.wgba-breadcrumb {
  font-size: 14px;
  color: var(--wgba-muted);
  margin-bottom: 8px;
}
.wgba-breadcrumb a {
  color: var(--wgba-muted) !important;
  text-decoration: none !important;
}
.wgba-breadcrumb a:hover { color: var(--wgba-green) !important; }

/* —— Home + shared page hero (tutorial hub) —— */
.wgba-home-hero,
.wgba-page-hero {
  background: var(--wgba-green-mint);
  border-bottom: 1px solid var(--wgba-border);
  padding: 36px 0 32px;
}

[data-wgba-theme="dark"] .wgba-home-hero,
[data-wgba-theme="dark"] .wgba-page-hero {
  background: #0f3328;
}

.wgba-home-hero h1,
.wgba-page-hero h1 { margin: 8px 0 0; }
.wgba-home-hero .wgba-lead,
.wgba-page-hero .wgba-lead {
  color: var(--wgba-ink);
  max-width: 46rem;
  overflow-wrap: anywhere;
}
.wgba-page-hero .wgba-breadcrumb { margin: 0 0 4px; }

.wgba-section { padding: 28px 0 40px; }

.wgba-section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--wgba-border);
  padding-bottom: 8px;
}
.wgba-section-head h2 { margin: 0; font-size: 28px; }
.wgba-section-head a {
  text-decoration: none !important;
  font-weight: 600;
  color: var(--wgba-green) !important;
}

.wgba-tut-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.wgba-tut-item {
  display: block;
  text-decoration: none !important;
  color: inherit !important;
  background: var(--wgba-surface);
  border: 1px solid var(--wgba-border);
  border-left: 6px solid var(--wgba-green);
  border-radius: var(--wgba-radius);
  padding: 16px 18px;
}

a.wgba-tut-item:hover {
  background: var(--wgba-green-mint);
  color: inherit !important;
}

.wgba-tut-item strong,
.wgba-tut-item > h2,
.wgba-tut-item > h3 {
  display: block;
  font-size: 20px;
  margin: 0 0 4px;
  font-weight: 700;
}

.wgba-tut-item p {
  margin: 0;
  color: var(--wgba-muted);
  font-size: 16px;
}

.wgba-tut-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 6px;
}

.wgba-coming {
  margin: 18px 0 0;
  padding: 14px 16px;
  background: var(--wgba-example);
  border-left: 6px solid #ffc107;
  border-radius: var(--wgba-radius);
  color: var(--wgba-ink);
}

.wgba-pill,
.wgba-badge {
  display: inline-block;
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: var(--wgba-example);
  color: var(--wgba-ink);
  border: 0;
}

.wgba-badge.is-public {
  background: var(--wgba-green);
  color: #fff;
}

.wgba-badge.is-login {
  background: var(--wgba-dark);
  color: #fff;
}

.wgba-card {
  background: var(--wgba-surface);
  border: 1px solid var(--wgba-border);
  border-left: 6px solid var(--wgba-green);
  border-radius: var(--wgba-radius);
  padding: 18px 20px;
  margin: 16px 0;
}

.wgba-card-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.wgba-card-list .wgba-card,
.wgba-card-list .wgba-tut-item { margin: 0; }

/* —— Lesson layout —— */
.wgba-lesson-shell {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  align-items: stretch;
  min-height: calc(100vh - var(--wgba-top-h) - var(--wgba-sub-h));
}

.wgba-sidebar {
  background: var(--wgba-sidenav);
  border-right: 1px solid var(--wgba-border);
  position: sticky;
  top: calc(var(--wgba-top-h) + var(--wgba-sub-h));
  height: calc(100vh - var(--wgba-top-h) - var(--wgba-sub-h));
  overflow: auto;
  padding: 0;
}

.wgba-sidebar-toggle {
  display: none;
  width: calc(100% - 24px);
  margin: 12px;
  background: var(--wgba-green);
  color: #fff;
  border: 0;
  border-radius: var(--wgba-radius);
  padding: 10px 14px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.wgba-sidebar-panel { padding: 12px 0 24px; }

.wgba-sidebar-title {
  font-size: 18px;
  font-weight: 700;
  padding: 12px 16px 8px;
  margin: 0;
}

.wgba-sidebar details { margin: 0; border: 0; }
.wgba-sidebar summary {
  cursor: pointer;
  padding: 10px 16px;
  font-weight: 700;
  font-size: 15px;
  list-style: none;
}
.wgba-sidebar summary::-webkit-details-marker { display: none; }
.wgba-sidebar summary:hover { background: rgba(0, 0, 0, 0.05); }

.wgba-sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
}

.wgba-sidebar li a {
  display: block;
  padding: 6px 16px 6px 22px;
  color: var(--wgba-ink) !important;
  text-decoration: none !important;
  font-size: 15px;
  border-left: 4px solid transparent;
}

.wgba-sidebar li a:hover {
  background: rgba(0, 0, 0, 0.06);
  color: var(--wgba-ink) !important;
}

.wgba-sidebar .is-current a {
  background: rgba(0, 0, 0, 0.08);
  border-left-color: var(--wgba-green);
  font-weight: 700;
}

.wgba-article {
  min-width: 0;
  padding: 20px 28px 48px;
  background: var(--wgba-bg);
}

.wgba-article-head { margin-bottom: 8px; }
.wgba-article-head h1 { margin-bottom: 8px; }

.wgba-byline,
.wgba-meta {
  margin: 4px 0;
  color: var(--wgba-muted);
  font-size: 14px;
}

.wgba-objectives {
  margin: 16px 0 20px;
  padding: 14px 18px 14px 32px;
  background: var(--wgba-green-mint);
  border-left: 6px solid var(--wgba-green);
  border-radius: var(--wgba-radius);
}

.wgba-prose { max-width: var(--wgba-prose); }
.wgba-prose .wgba-playground.wgba-playground-split {
  max-width: none;
  width: min(100%, calc(var(--wgba-max) - 48px));
}
.wgba-prose p { margin: 12px 0; }
.wgba-prose ul,
.wgba-prose ol { padding-left: 22px; }

.wgba-disclose {
  border: 1px solid var(--wgba-border);
  border-radius: var(--wgba-radius);
  padding: 10px 14px;
  margin: 12px 0;
  background: var(--wgba-surface);
}

/* Example / code — W3 style */
.wgba-example,
.wgba-playground {
  background: var(--wgba-example);
  border-radius: var(--wgba-radius);
  padding: 14px 16px;
  margin: 18px 0;
}

/* Side-by-side playground (desktop) / Code·Output tabs (mobile) */
.wgba-playground.wgba-playground-split {
  padding: 12px;
  max-width: none;
  background: #f3f4f6;
  border: 1px solid var(--wgba-border);
}

[data-wgba-theme="dark"] .wgba-playground.wgba-playground-split {
  background: #15202b;
  border-color: #38444d;
}

.wgba-play-tabs {
  display: none;
  gap: 0;
  margin: 0 0 10px;
  border: 1px solid var(--wgba-border);
  border-radius: var(--wgba-radius);
  overflow: hidden;
  background: #fff;
}

[data-wgba-theme="dark"] .wgba-play-tabs {
  background: #1d2a35;
}

.wgba-play-tab {
  flex: 1 1 50%;
  margin: 0;
  padding: 10px 12px;
  border: 0;
  background: transparent;
  color: var(--wgba-muted);
  font: inherit;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
}

.wgba-play-tab + .wgba-play-tab {
  border-left: 1px solid var(--wgba-border);
}

.wgba-play-tab.is-active {
  background: var(--wgba-green);
  color: #fff;
}

.wgba-play-split {
  display: flex;
  align-items: stretch;
  min-height: 380px;
  height: min(62vh, 560px);
  border: 1px solid var(--wgba-border);
  border-radius: var(--wgba-radius);
  overflow: hidden;
  background: #fff;
}

[data-wgba-theme="dark"] .wgba-play-split {
  background: #1d2a35;
  border-color: #38444d;
}

.wgba-play-split.is-resizing {
  user-select: none;
  cursor: col-resize;
}

.wgba-play-pane {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  height: 100%;
  background: #fff;
}

[data-wgba-theme="dark"] .wgba-play-pane {
  background: #1d2a35;
}

.wgba-play-code {
  flex: 1 1 55%;
  width: 55%;
}

.wgba-play-out {
  flex: 1 1 45%;
  width: 45%;
}

.wgba-play-splitter {
  position: relative;
  flex: 0 0 8px;
  width: 8px;
  cursor: col-resize;
  background: #e5e7eb;
  touch-action: none;
}

.wgba-play-splitter::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 36px;
  margin: -18px 0 0 -2px;
  border-radius: 999px;
  background: #9ca3af;
}

.wgba-play-splitter:hover::after,
.wgba-play-splitter:focus-visible::after {
  background: var(--wgba-green);
}

[data-wgba-theme="dark"] .wgba-play-splitter {
  background: #38444d;
}

.wgba-play-pane-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  min-height: 48px;
  padding: 6px 10px;
  background: #eef0f3;
  border-bottom: 1px solid var(--wgba-border);
}

[data-wgba-theme="dark"] .wgba-play-pane-head {
  background: #24333f;
  border-bottom-color: #38444d;
}

.wgba-play-file {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 6px 6px 0 0;
  background: #fff;
  border: 1px solid var(--wgba-border);
  border-bottom-color: #fff;
  font-family: var(--wgba-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--wgba-ink);
}

[data-wgba-theme="dark"] .wgba-play-file {
  background: #1d2a35;
  border-color: #38444d;
  border-bottom-color: #1d2a35;
  color: #ddd;
}

.wgba-play-out-label {
  font-weight: 700;
  font-size: 14px;
  color: var(--wgba-muted);
  letter-spacing: 0.02em;
}

.wgba-play-toolbar {
  margin: 0;
  justify-content: flex-end;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.wgba-play-login-hint {
  font-size: 12px;
  max-width: 11rem;
  color: var(--wgba-muted);
}

.wgba-play-pane .wgba-editor-label {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  margin: 0;
  height: 100%;
}

.wgba-play-pane .wgba-code-editor {
  flex: 1 1 auto;
  height: 100%;
  min-height: 280px;
  border: 0;
  border-radius: 0;
}

.wgba-play-pane .wgba-kbd-tip {
  margin: 0;
  padding: 6px 10px;
  border-top: 1px solid var(--wgba-border);
  font-size: 12px;
  background: #f8f9fb;
}

[data-wgba-theme="dark"] .wgba-play-pane .wgba-kbd-tip {
  background: #15202b;
  border-top-color: #38444d;
}

.wgba-play-out .wgba-run-status {
  margin: 0;
  font-size: 13px;
}

.wgba-play-out .wgba-console {
  flex: 1 1 auto;
  min-height: 260px;
  margin: 0;
  border-radius: 0;
  border: 0;
  background: #fff;
  color: var(--wgba-ink);
  white-space: pre-wrap;
}

[data-wgba-theme="dark"] .wgba-play-out .wgba-console {
  background: #0f1720;
  color: #e7e9eb;
}

@media (max-width: 768px) {
  .wgba-play-tabs {
    display: flex;
  }

  .wgba-play-split {
    display: block;
    min-height: 0;
    height: auto;
  }

  .wgba-play-splitter {
    display: none;
  }

  .wgba-play-pane {
    display: none;
    width: 100% !important;
    flex-basis: auto !important;
  }

  .wgba-play-pane.is-active {
    display: flex;
    min-height: 360px;
  }

  .wgba-play-pane-head {
    flex-direction: column;
    align-items: stretch;
  }

  .wgba-play-toolbar {
    justify-content: flex-start;
  }

  .wgba-play-pane .wgba-code-editor,
  .wgba-play-out .wgba-console {
    min-height: 300px;
  }
}

.wgba-example-label {
  font-weight: 700;
  margin: 0 0 10px;
  font-size: 18px;
}

.wgba-code,
.wgba-note-body,
.wgba-console,
.wgba-playground textarea,
.wgba-code-editor .wgba-editor,
.wgba-code-hl {
  font-family: var(--wgba-mono);
  font-size: 14px;
  line-height: 1.55;
  tab-size: 2;
}

.wgba-code,
.wgba-note-body,
.wgba-console {
  width: 100%;
  border: 0;
  border-radius: var(--wgba-radius);
  background: #fff;
  color: var(--wgba-code-ink);
  padding: 12px 14px;
  overflow-x: auto;
  white-space: pre-wrap;
}

[data-wgba-theme="dark"] .wgba-code,
[data-wgba-theme="dark"] .wgba-console {
  background: #1d2a35;
  color: #ddd;
}

/* ——— Code editor chrome (playground) ——— */
.wgba-editor-label {
  display: block;
  margin: 0;
}

.wgba-code-editor {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: minmax(0, 1fr) auto;
  border: 1px solid var(--wgba-border);
  border-radius: var(--wgba-radius);
  overflow: hidden;
  background: #0f1720;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  min-height: 280px;
  height: 100%;
  width: 100%;
}

.wgba-code-gutter {
  grid-row: 1;
  grid-column: 1;
  min-width: 2.6rem;
  height: 100%;
  padding: 12px 0;
  text-align: right;
  background: #0b1219;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  color: #5b6b7a;
  font-family: var(--wgba-mono);
  font-size: 13px;
  line-height: 1.55;
  overflow: hidden;
  user-select: none;
}

.wgba-code-gutter span {
  display: block;
  padding: 0 10px 0 8px;
}

.wgba-code-surface {
  grid-row: 1;
  grid-column: 2;
  position: relative;
  min-width: 0;
  min-height: 0;
  height: 100%;
  background: #1d2a35;
}

.wgba-code-hl,
.wgba-code-editor .wgba-editor {
  margin: 0;
  border: 0 !important;
  border-radius: 0;
  outline: none !important;
  box-shadow: none !important;
  width: 100%;
  height: 100%;
  min-height: 0;
  padding: 12px 14px;
  white-space: pre;
  overflow: auto;
  box-sizing: border-box;
  word-wrap: normal;
  overflow-wrap: normal;
}

.wgba-code-hl {
  position: absolute;
  inset: 0;
  pointer-events: none;
  color: #e6edf3;
  background: transparent;
  z-index: 0;
}

.wgba-code-editor .wgba-editor {
  position: absolute;
  inset: 0;
  z-index: 1;
  resize: none !important;
  background: transparent !important;
  color: transparent !important;
  caret-color: #e6edf3;
  -webkit-text-fill-color: transparent;
}

.wgba-code-editor:focus-within {
  border-color: #3d4f5f;
  box-shadow: none;
}

.wgba-playground textarea.wgba-editor:focus,
.wgba-playground textarea.wgba-editor:focus-visible,
.wgba-code-editor .wgba-editor:focus,
.wgba-code-editor .wgba-editor:focus-visible {
  outline: none !important;
  border: 0 !important;
  box-shadow: none !important;
}

.wgba-code-editor .wgba-editor::selection {
  background: rgba(88, 166, 255, 0.35);
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.wgba-code-hl .tok-kw { color: #ff7b72; }
.wgba-code-hl .tok-str { color: #a5d6ff; }
.wgba-code-hl .tok-com { color: #8b949e; font-style: italic; }
.wgba-code-hl .tok-num { color: #79c0ff; }
.wgba-code-hl .tok-id { color: #e6edf3; }

.wgba-code-ac {
  grid-column: 1 / -1;
  grid-row: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 6px 12px;
  background: #141e28;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 12px;
  color: #9aa7b5;
  font-family: var(--wgba-mono);
}

.wgba-code-ac kbd {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: #1d2a35;
  color: #c9d1d9;
  font-size: 11px;
  font-family: inherit;
}

.wgba-code-ac-ghost {
  color: #8b949e;
}

.wgba-code-ac-ghost em {
  color: #7ee787;
  font-style: normal;
  font-weight: 600;
}

.wgba-code-ac-hint {
  margin-left: auto;
  opacity: 0.7;
  font-size: 11px;
  letter-spacing: 0.02em;
}

.wgba-kbd-tip {
  margin: 6px 0 0;
  font-size: 12px;
}

/* Light theme: keep editor dark (code surfaces stay night) */
[data-wgba-theme="light"] .wgba-code-editor {
  border-color: #c5d0da;
}

.wgba-playground-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0;
}

.wgba-lock {
  max-width: 40rem;
  background: var(--wgba-green-mint);
  border-left: 6px solid var(--wgba-green);
}

.wgba-playground-section,
.wgba-quiz,
.wgba-ask,
.wgba-progress-actions {
  margin-top: 28px;
  max-width: var(--wgba-prose);
}

.wgba-playground-section:has(.wgba-playground-split),
.wgba-article .wgba-playground.wgba-playground-split {
  max-width: none;
}

.wgba-q {
  border: 1px solid var(--wgba-border);
  border-radius: var(--wgba-radius);
  padding: 12px 14px;
  margin: 12px 0;
  background: var(--wgba-green-mint);
}

.wgba-q legend { font-weight: 700; padding: 0 4px; }
.wgba-q label { display: block; margin: 6px 0; cursor: pointer; }

.wgba-quiz-result {
  margin-top: 10px;
  padding: 12px 14px;
  background: var(--wgba-green-soft);
  border-left: 6px solid var(--wgba-green);
  border-radius: var(--wgba-radius);
}

.wgba-progress-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.wgba-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 14px;
}

.wgba-quick button {
  border: 1px solid var(--wgba-border);
  background: var(--wgba-green-mint);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--wgba-ink);
  text-align: left;
}
.wgba-quick button:hover {
  background: var(--wgba-green);
  border-color: var(--wgba-green);
  color: #fff;
}
.wgba-quick button:focus-visible {
  outline: 3px solid #ffc107;
  outline-offset: 2px;
}
[data-wgba-theme="dark"] .wgba-quick button {
  background: #243641;
  border-color: #4b5a64;
  color: #e8ecef;
}
[data-wgba-theme="dark"] .wgba-quick button:hover {
  background: var(--wgba-green);
  border-color: var(--wgba-green);
  color: #fff;
}

/* —— Auth —— */
.wgba-auth-shell {
  display: grid;
  place-items: center;
  padding: 0;
  min-height: 0;
  background: transparent;
}

.wgba-auth {
  width: min(100%, 420px);
  background: var(--wgba-surface);
  border: 1px solid var(--wgba-border);
  border-left: 6px solid var(--wgba-green);
  border-radius: var(--wgba-radius);
  padding: 24px;
}

.wgba-auth h1 { text-align: center; font-size: 28px; margin-top: 0; }
.wgba-auth .wgba-card {
  border: 0;
  border-left: 0;
  padding: 0;
  margin: 0;
  box-shadow: none;
  background: transparent;
}

.wgba-auth label,
.wgba-ask label {
  display: block;
  margin: 14px 0;
  font-weight: 600;
}

.wgba-auth input[type="text"],
.wgba-auth input[type="email"],
.wgba-auth input[type="password"],
.wgba-auth input:not([type]),
.wgba-ask input,
.wgba-ask textarea {
  width: 100%;
  margin-top: 6px;
  border: 1px solid #ccc;
  border-radius: var(--wgba-radius);
  padding: 10px 12px;
  font: inherit;
  background: #fff;
  color: inherit;
}

[data-wgba-theme="dark"] .wgba-auth input,
[data-wgba-theme="dark"] .wgba-ask input,
[data-wgba-theme="dark"] .wgba-ask textarea {
  background: #38444d;
  border-color: #4b5a64;
  color: #ddd;
}

.wgba-auth label:has(input[type="checkbox"]) {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 400;
}
.wgba-auth label:has(input[type="checkbox"]) input { width: auto; margin: 0; }

.wgba-auth .wgba-btn { width: 100%; margin-top: 8px; }
.wgba-auth-links { text-align: center; margin-top: 16px; font-size: 15px; }
.wgba-auth-links a { color: var(--wgba-green) !important; }

.wgba-error {
  color: #a94442;
  background: #f2dede;
  border-left: 6px solid #a94442;
  padding: 10px 12px;
  border-radius: var(--wgba-radius);
}
.wgba-ok {
  color: #3c763d;
  background: var(--wgba-green-soft);
  border-left: 6px solid var(--wgba-green);
  padding: 10px 12px;
  border-radius: var(--wgba-radius);
}

/* —— Dashboard / roadmap —— */
.wgba-page-head { display: none; } /* legacy — use .wgba-page-hero */

.wgba-dash-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 16px;
  margin: 0;
}

.wgba-progress-meter {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.wgba-progress-bar {
  width: 100%;
  height: 22px;
  background: var(--wgba-example);
  border-radius: 20px;
  overflow: hidden;
  margin: 10px 0;
}

.wgba-progress-bar > span {
  display: block;
  height: 100%;
  background: var(--wgba-green);
  border-radius: 20px;
}

.wgba-progress-ring { display: none; }
.wgba-progress-ring-label {
  font-size: 32px;
  font-weight: 700;
  color: var(--wgba-green);
}

.wgba-dash-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
}

.wgba-dash-links a {
  display: block;
  padding: 12px 14px;
  background: var(--wgba-green-mint);
  border-left: 4px solid var(--wgba-green);
  text-decoration: none !important;
  color: var(--wgba-ink) !important;
  font-weight: 600;
}
.wgba-dash-links a:hover { background: var(--wgba-green-soft); }

.wgba-roadmap-list { display: flex; flex-direction: column; gap: 12px; margin: 0; }
.wgba-roadmap-list .wgba-card { margin: 0; }
.wgba-roadmap-list h2 {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 22px;
  margin: 0 0 8px;
}
.wgba-roadmap-list ol { margin: 10px 0 0; padding-left: 22px; }
.wgba-roadmap-list li { margin: 6px 0; }
.wgba-roadmap-list li a {
  text-decoration: none !important;
  font-weight: 600;
  color: var(--wgba-ink) !important;
}
.wgba-roadmap-list li a:hover { color: var(--wgba-green) !important; }

.wgba-lesson-list { margin: 8px 0 0; padding-left: 22px; }
.wgba-lesson-list li { margin: 8px 0; }
.wgba-lesson-list a {
  font-weight: 600;
  text-decoration: none !important;
  color: var(--wgba-ink) !important;
}
.wgba-lesson-list a:hover { color: var(--wgba-green) !important; }

/* —— Brand pages: About / Contact (international standard) —— */
.wgba-brand-page { max-width: 1080px; }

.wgba-brand-panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 16px;
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--wgba-border);
}
.wgba-brand-panel-head h2 {
  margin: 0;
  font-size: 22px;
  letter-spacing: -0.02em;
}
.wgba-brand-panel-head .wgba-muted {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
}

.wgba-brand-intro {
  display: grid;
  grid-template-columns: minmax(240px, 340px) minmax(0, 1fr);
  gap: 36px 40px;
  align-items: start;
  margin: 0 0 32px;
}
.wgba-brand-portrait {
  margin: 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--wgba-border);
  background: var(--wgba-example);
  box-shadow: 0 18px 40px rgba(15, 28, 36, 0.12);
  aspect-ratio: 4 / 5;
}
.wgba-brand-portrait img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}
.wgba-brand-kicker {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--wgba-green);
}
.wgba-brand-intro-copy h2 {
  margin: 0 0 10px;
  font-size: clamp(28px, 4vw, 36px);
  letter-spacing: -0.03em;
  line-height: 1.15;
}
.wgba-brand-role {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  color: var(--wgba-muted);
  line-height: 1.45;
  max-width: 36rem;
}
.wgba-brand-loc {
  margin: 0 0 18px;
  font-size: 14px;
  color: var(--wgba-muted);
}
.wgba-brand-highlights {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 8px;
}
.wgba-brand-highlights li {
  position: relative;
  padding: 10px 14px 10px 36px;
  background: var(--wgba-green-mint);
  border: 1px solid var(--wgba-border);
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
}
.wgba-brand-highlights li::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--wgba-green);
  transform: translateY(-50%);
}
.wgba-brand-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 18px;
}
.wgba-brand-social {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.wgba-brand-social a {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border: 1px solid var(--wgba-border);
  border-radius: 999px;
  background: var(--wgba-surface);
  text-decoration: none !important;
  color: var(--wgba-ink) !important;
  font-size: 13px;
  font-weight: 700;
}
.wgba-brand-social a:hover {
  border-color: var(--wgba-green);
  color: var(--wgba-green) !important;
  background: var(--wgba-green-mint);
}

.wgba-brand-panel {
  background: var(--wgba-surface);
  border: 1px solid var(--wgba-border);
  border-radius: 16px;
  padding: 22px 24px;
  margin: 0 0 28px;
}
.wgba-brand-panel.wgba-prose > :first-child { margin-top: 0; }

.wgba-brand-focus { margin: 0 0 28px; }
.wgba-brand-focus-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.wgba-brand-focus-card {
  background: var(--wgba-surface);
  border: 1px solid var(--wgba-border);
  border-radius: 14px;
  padding: 18px 18px 18px 18px;
  min-height: 100%;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.wgba-brand-focus-card:hover {
  border-color: rgba(4, 170, 109, 0.45);
  box-shadow: 0 10px 28px rgba(15, 28, 36, 0.06);
}
.wgba-brand-focus-num {
  display: inline-block;
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--wgba-green);
}
.wgba-brand-focus-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.wgba-brand-focus-card p {
  margin: 0;
  color: var(--wgba-muted);
  font-size: 14px;
  line-height: 1.55;
}

.wgba-brand-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px 28px;
  padding: 24px 26px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--wgba-green-mint) 0%, #fff 55%);
  border: 1px solid var(--wgba-border);
  border-left: 6px solid var(--wgba-green);
}
[data-wgba-theme="dark"] .wgba-brand-cta {
  background: linear-gradient(135deg, #0f3328 0%, var(--wgba-surface) 60%);
}
.wgba-brand-cta h2 { margin: 0 0 8px; font-size: 22px; }
.wgba-brand-cta p { margin: 0; max-width: 40rem; color: var(--wgba-muted); font-size: 15px; line-height: 1.55; }
.wgba-brand-cta .wgba-brand-actions { margin: 0; }

/* Contact */
.wgba-contact-shell {
  display: grid;
  grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}
.wgba-contact-person {
  background: var(--wgba-surface);
  border: 1px solid var(--wgba-border);
  border-radius: 16px;
  padding: 22px 20px;
  position: sticky;
  top: calc(var(--wgba-top-h) + var(--wgba-sub-h) + 12px);
}
.wgba-contact-avatar {
  width: 112px;
  height: 112px;
  border-radius: 18px;
  object-fit: cover;
  object-position: center top;
  border: 2px solid rgba(4, 170, 109, 0.35);
  display: block;
  margin: 0 0 14px;
  background: var(--wgba-example);
}
.wgba-contact-person h2 {
  margin: 0 0 8px;
  font-size: 22px;
  letter-spacing: -0.02em;
}
.wgba-contact-profile-link {
  display: inline-block;
  margin: 4px 0 16px;
  font-weight: 700;
  text-decoration: none !important;
  color: var(--wgba-green) !important;
}
.wgba-contact-main { min-width: 0; }
.wgba-channel-grid {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.wgba-channel-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 16px;
  background: var(--wgba-surface);
  border: 1px solid var(--wgba-border);
  border-radius: 14px;
  min-height: 100%;
}
.wgba-channel-card:hover {
  border-color: rgba(4, 170, 109, 0.45);
}
.wgba-channel-label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--wgba-muted);
}
.wgba-channel-value {
  flex: 1;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none !important;
  color: var(--wgba-ink) !important;
  word-break: break-word;
  line-height: 1.35;
}
.wgba-channel-value:hover { color: var(--wgba-green) !important; }
.wgba-channel-card .wgba-btn { align-self: flex-start; margin-top: auto; }

.wgba-topic-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 10px;
}
.wgba-topic-list li {
  display: grid;
  gap: 2px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--wgba-green-mint);
  border: 1px solid transparent;
}
.wgba-topic-list strong {
  font-size: 15px;
  color: var(--wgba-ink);
}
.wgba-topic-list span {
  font-size: 14px;
  color: var(--wgba-muted);
  line-height: 1.45;
}
.wgba-contact-note {
  margin: 0;
  font-size: 14px;
  color: var(--wgba-muted);
  line-height: 1.5;
}
.wgba-contact-note a { color: var(--wgba-green) !important; font-weight: 600; }

/* Legacy photo class (footer / misc) */
.wgba-author-placeholder,
.wgba-author-photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--wgba-green);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 36px;
  font-weight: 700;
}

/* —— Footer —— */
.wgba-footer {
  position: relative;
  background: linear-gradient(165deg, #0f1c24 0%, #1d2a35 48%, #152028 100%);
  color: #fff;
  padding: 0 16px 0;
  margin-top: 36px;
  overflow: hidden;
}
.wgba-footer-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--wgba-green) 0%, #7dcea0 45%, #c6a15a 100%);
}
.wgba-footer-inner {
  width: min(100%, var(--wgba-max));
  margin: 0 auto;
  padding: 24px 0 0;
}
.wgba-footer a { color: #e8ecef !important; text-decoration: none !important; }
.wgba-footer a:hover { color: var(--wgba-green) !important; }
.wgba-footer-grid {
  display: grid;
  grid-template-columns: minmax(220px, 1.35fr) repeat(3, minmax(0, 1fr));
  gap: 20px 24px;
  align-items: start;
  padding-bottom: 4px;
}
.wgba-footer-logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 12px;
  color: inherit !important;
}
/* Footer chrome is always dark — use the light-on-dark lockup. */
.wgba-footer-logo .wgba-brand-logo-light { display: none !important; }
.wgba-footer-logo img.wgba-brand-logo-dark {
  display: block !important;
  height: 70px !important;
  width: auto !important;
  max-width: 320px !important;
  max-height: 70px !important;
}
.wgba-footer-logo .wgba-footer-tag {
  margin: 0;
}
.wgba-footer-brand {
  display: block;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: #fff;
  margin: 0 0 4px;
}
.wgba-footer-tag {
  display: block;
  margin: 0;
  color: #9aa4ad;
  font-size: 13px;
  line-height: 1.4;
  font-weight: 400;
}
.wgba-footer-founder {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 12px;
  margin: 0;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
}
.wgba-footer-founder img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(4, 170, 109, 0.55);
  box-shadow: 0 0 0 3px rgba(4, 170, 109, 0.12);
  flex-shrink: 0;
}
.wgba-footer-founder strong { display: block; font-size: 14px; color: #fff; }
.wgba-footer-founder span {
  display: block;
  font-size: 12px;
  color: #9aa4ad;
  line-height: 1.35;
  margin-top: 3px;
}
.wgba-footer-heading {
  font-weight: 700;
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7dcea0;
}
.wgba-footer-list { list-style: none; padding: 0; margin: 0; }
.wgba-footer-list li { margin: 0 0 8px; font-size: 14px; }
.wgba-footer-list a { color: #c8d0d6 !important; }
.wgba-footer-list a:hover { color: #fff !important; }
.wgba-footer-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  margin: 18px 0 0;
  padding: 14px 0 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #7a858e;
  font-size: 13px;
}
.wgba-footer-copy-links {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 14px;
}
.wgba-footer-copy-links a {
  color: #9aa4ad !important;
  font-weight: 600;
}
.wgba-footer-copy-links a:hover { color: var(--wgba-green) !important; }

@media (max-width: 900px) {
  .wgba-brand-intro,
  .wgba-contact-shell { grid-template-columns: 1fr; }
  .wgba-contact-person { position: static; }
  .wgba-brand-portrait { max-width: 360px; }
  .wgba-channel-grid { grid-template-columns: 1fr; }
  .wgba-brand-focus-grid { grid-template-columns: 1fr; }
}
/* Keep 4 columns longer; only stack when truly narrow (was 900px — caused tall empty gap). */
@media (max-width: 640px) {
  .wgba-footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 18px 16px;
  }
  .wgba-footer-brand-block { grid-column: 1 / -1; }
}
@media (max-width: 420px) {
  .wgba-footer-grid { grid-template-columns: 1fr; }
  .wgba-footer-copy { flex-direction: column; align-items: flex-start; }
}

/* —— Lesson body components (emitted by scripts/build-content.mjs) —— */
.wgba-prose .wgba-section { padding: 0; margin: 0 0 8px; }
.wgba-prose .wgba-section + .wgba-section { border-top: 1px solid var(--wgba-border); }
.wgba-prose h2 { margin: 28px 0 10px; font-size: 26px; }
.wgba-prose h3 { margin: 24px 0 8px; font-size: 20px; }
.wgba-prose code:not(pre code) {
  font-family: var(--wgba-mono);
  font-size: .92em;
  background: var(--wgba-code-bg);
  color: #dc143c;
  padding: 1px 5px;
  border-radius: 3px;
}
[data-wgba-theme="dark"] .wgba-prose code:not(pre code) { color: #ff8a9a; }

.wgba-note {
  background: var(--wgba-green-mint);
  border-left: 6px solid var(--wgba-green);
  border-radius: 0 var(--wgba-radius) var(--wgba-radius) 0;
  padding: 12px 16px;
  margin: 16px 0;
}
.wgba-note > :first-child { margin-top: 0; }
.wgba-note > :last-child { margin-bottom: 0; }
.wgba-note-warn {
  background: #fff8e1;
  border-left-color: #f0ad4e;
}
[data-wgba-theme="dark"] .wgba-note-warn { background: #3a3220; }

.wgba-ex-intro { margin: 18px 0 6px; }

.wgba-table-wrap {
  overflow-x: auto;
  margin: 16px 0;
  -webkit-overflow-scrolling: touch;
}
.wgba-table-wrap table {
  border-collapse: collapse;
  width: 100%;
  min-width: 420px;
  font-size: 15px;
}
.wgba-table-wrap caption {
  caption-side: top;
  text-align: left;
  font-weight: 700;
  padding: 0 0 8px;
}
.wgba-table-wrap th,
.wgba-table-wrap td {
  border: 1px solid var(--wgba-border);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}
.wgba-table-wrap thead th { background: var(--wgba-example); font-weight: 700; }
.wgba-table-wrap tbody tr:nth-child(even) { background: rgba(0, 0, 0, .025); }
[data-wgba-theme="dark"] .wgba-table-wrap tbody tr:nth-child(even) { background: rgba(255, 255, 255, .04); }

.wgba-prose pre.wgba-code,
.wgba-prose pre.wgba-console-static {
  margin: 10px 0 16px;
  border-left: 4px solid var(--wgba-green);
  background: var(--wgba-code-bg);
}
.wgba-code[data-lang] { position: relative; padding-top: 28px; }
.wgba-code[data-lang]::before {
  content: attr(data-lang);
  position: absolute;
  top: 6px;
  right: 10px;
  font: 700 12px/1 var(--wgba-font);
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--wgba-muted);
}
.wgba-prose pre.wgba-code[data-lang="python"] { border-left-color: #3776ab; }
.wgba-prose pre.wgba-code[data-lang="bash"],
.wgba-prose pre.wgba-code[data-lang="shell"] { background: var(--wgba-dark-2); color: #e7e9eb; border-left-color: var(--wgba-dark); }
.wgba-code[data-lang="bash"]::before,
.wgba-code[data-lang="shell"]::before { color: #9fb3c2; }
.wgba-prose pre.wgba-console-static {
  background: var(--wgba-dark);
  color: #e7e9eb;
  border-left-color: var(--wgba-green);
}

.wgba-playground-slot {
  background: var(--wgba-example);
  border-radius: var(--wgba-radius);
  padding: 14px 16px;
  margin: 12px 0 18px;
}
.wgba-playground-slot > .wgba-code { margin: 0; border-left: 0; }

.wgba-sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.wgba-playground-label { font-weight: 700; font-size: 18px; margin: 0 0 10px; }
.wgba-editor-label { display: block; }
.wgba-kbd-tip { font-size: 13px; margin: -4px 0 6px; }
.wgba-run-status { font-size: 14px; font-weight: 600; min-height: 1.4em; margin: 4px 0; color: var(--wgba-muted); }
.wgba-playground .wgba-console { min-height: 3.2em; background: var(--wgba-dark); color: #e7e9eb; }

/* Playground action buttons — compact tool-bar style */
.wgba-playground-toolbar,
.wgba-play-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.wgba-play-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin: 0;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: 8px;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none !important;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}

.wgba-play-btn:focus-visible {
  outline: 2px solid #94a3b8;
  outline-offset: 2px;
}

.wgba-play-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.wgba-play-btn-run {
  background: var(--wgba-green);
  color: #fff !important;
  border-color: #03965f;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08);
  min-width: 5.5rem;
}

.wgba-play-btn-run:hover:not(:disabled) {
  background: var(--wgba-green-hover);
  color: #fff !important;
}

.wgba-play-btn-run:active:not(:disabled) {
  transform: translateY(1px);
}

.wgba-play-btn-secondary {
  background: #ffffff;
  color: #1f2937 !important;
  border-color: #d1d5db;
}

.wgba-play-btn-secondary:hover:not(:disabled) {
  background: #f3f4f6;
  border-color: #9ca3af;
  color: #111827 !important;
}

[data-wgba-theme="dark"] .wgba-play-btn-secondary {
  background: #24333f;
  color: #e5e7eb !important;
  border-color: #4b5a64;
}

[data-wgba-theme="dark"] .wgba-play-btn-secondary:hover:not(:disabled) {
  background: #2f4250;
  border-color: #6b7c88;
  color: #fff !important;
}

.wgba-play-btn-danger {
  background: transparent;
  color: #b91c1c !important;
  border-color: #f1c0c0;
}

.wgba-play-btn-danger:hover:not(:disabled) {
  background: #fef2f2;
  border-color: #ef4444;
  color: #991b1b !important;
}

[data-wgba-theme="dark"] .wgba-play-btn-danger {
  color: #fca5a5 !important;
  border-color: #7f1d1d;
}

[data-wgba-theme="dark"] .wgba-play-btn-danger:hover:not(:disabled) {
  background: #3f1d1d;
  color: #fecaca !important;
}

.wgba-play-pane-head .wgba-play-btn {
  padding: 7px 12px;
  font-size: 12.5px;
}
.wgba-expected { margin: 10px 0 0; }
.wgba-expected summary { cursor: pointer; font-weight: 600; color: var(--wgba-green-hover); }
.wgba-console-expected { margin-top: 8px; opacity: .9; }
.wgba-hint:empty { display: none; }

/* —— Glossary —— */
.wgba-search {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-weight: 600;
}
.wgba-search input {
  flex: 1 1 220px;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--wgba-border);
  border-radius: var(--wgba-radius);
  font: inherit;
  background: var(--wgba-surface);
  color: var(--wgba-ink);
}
.wgba-glossary {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.wgba-glossary > li {
  background: var(--wgba-surface);
  border: 1px solid var(--wgba-border);
  border-left: 6px solid var(--wgba-green);
  border-radius: var(--wgba-radius);
  padding: 16px 18px;
}
.wgba-glossary > li a {
  text-decoration: none !important;
  color: var(--wgba-ink) !important;
}
.wgba-glossary > li a:hover { color: var(--wgba-green) !important; }
.wgba-glossary .wgba-prose { margin: 6px 0 0; color: var(--wgba-muted); font-size: 15px; }

/* —— Ads (in-content + bottom anchor; no sidebar rail) —— */
.wgba-ad-remove,
.wgba-ad-remove-wrap .wgba-ad-remove {
  display: inline-block;
  margin: 0;
  padding: 4px 10px;
  border: 1px solid var(--wgba-border);
  border-radius: 3px;
  background: #fff;
  color: #666 !important;
  font: inherit;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none !important;
  cursor: pointer;
  text-transform: uppercase;
}

.wgba-ad-remove:hover {
  border-color: var(--wgba-green);
  color: var(--wgba-green) !important;
}

[data-wgba-theme="dark"] .wgba-ad-remove {
  background: #1d2a35;
  color: #bbb !important;
}

.wgba-ad-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 100%;
  max-width: 100%;
}

.wgba-ad-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #9aa0a6;
}

.wgba-ad-ph {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  min-height: 120px;
  max-width: 728px;
  padding: 12px;
  border: 1px dashed #c5ccd3;
  border-radius: 4px;
  background: linear-gradient(160deg, #f7f8fa 0%, #eef1f5 100%);
  color: #6b7280;
  text-align: center;
  font-size: 12px;
  line-height: 1.35;
}

.wgba-ad-unit--incontent .wgba-ad-ph {
  width: 100%;
  min-height: 120px;
  max-width: 728px;
}

.wgba-ad-unit--anchor .wgba-ad-ph {
  width: min(728px, 92vw);
  min-height: 90px;
}

.wgba-ad-ph strong {
  font-size: 13px;
  color: #374151;
}

[data-wgba-theme="dark"] .wgba-ad-ph {
  background: linear-gradient(160deg, #24333f 0%, #1d2a35 100%);
  border-color: #4b5a64;
  color: #9aa7b5;
}

[data-wgba-theme="dark"] .wgba-ad-ph strong { color: #ddd; }

.wgba-ad-incontent {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin: 28px 0;
  padding: 16px 12px;
  border-top: 1px solid var(--wgba-border);
  border-bottom: 1px solid var(--wgba-border);
  background: var(--wgba-example);
}

.wgba-ad-remove-wrap {
  margin: 0;
  text-align: center;
}

.wgba-ad-anchor {
  position: fixed;
  left: 50%;
  bottom: 0;
  z-index: 80;
  transform: translateX(-50%);
  display: flex;
  align-items: flex-start;
  gap: 0;
  padding: 8px 10px 10px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid #d0d5dd;
  border-bottom: 0;
  border-radius: 8px 8px 0 0;
  box-shadow: 0 -4px 24px rgba(15, 23, 32, 0.12);
  max-width: calc(100vw - 16px);
}

.wgba-ad-anchor[hidden] { display: none !important; }

[data-wgba-theme="dark"] .wgba-ad-anchor {
  background: rgba(29, 42, 53, 0.96);
  border-color: #4b5a64;
}

.wgba-ad-anchor-close {
  position: absolute;
  top: 4px;
  left: 6px;
  z-index: 2;
  width: 22px;
  height: 22px;
  border: 0;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
}

.wgba-ad-anchor-inner {
  padding: 4px 4px 0 18px;
}

body.wgba-ads-on.wgba-ads-anchor-open {
  padding-bottom: 110px;
}

body.wgba-ads-hidden .wgba-ad-incontent,
body.wgba-ads-hidden .wgba-ad-anchor {
  display: none !important;
}

/* —— Responsive —— */
@media (max-width: 960px) {
  .wgba-lesson-shell { grid-template-columns: 1fr; }
  .wgba-sidebar {
    position: static;
    height: auto;
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--wgba-border);
  }
  .wgba-sidebar-toggle { display: block; }
  .wgba-sidebar-panel { display: none; }
  .wgba-sidebar.is-open .wgba-sidebar-panel { display: block; max-height: 55vh; overflow: auto; }
  .wgba-article { padding: 16px; }
  .wgba-dash-grid { grid-template-columns: 1fr; }
  .wgba-body h1 { font-size: 28px; }
  .wgba-top-inner { gap: 6px; padding: 0 10px; }
  .wgba-top-inner .wgba-btn-login {
    margin-left: 0;
    flex-shrink: 0;
    padding: 7px 12px;
    font-size: 13px;
  }
  .wgba-top .wgba-brand img.wgba-brand-logo {
    height: 70px !important;
    max-height: 70px !important;
    max-width: min(280px, 48vw) !important;
  }
  .wgba-brand-text { font-size: 14px; }
  .wgba-brand-mark { width: 30px; height: 30px; font-size: 11px; }
  .wgba-section-head h2 { font-size: 22px; }
  .wgba-home-hero,
  .wgba-page-hero { padding: 24px 0 20px; }
  .wgba-section { padding: 20px 0 28px; }
}

@media (max-width: 640px) {
  .wgba-wrap { width: min(100% - 24px, var(--wgba-max)); }
  .wgba-body { font-size: 16px; }
  .wgba-body h1 { font-size: 24px; margin: 6px 0 12px; }
  .wgba-body h2 { font-size: 21px; }
  .wgba-body h3 { font-size: 18px; }
  .wgba-lead { font-size: 16px; }
  .wgba-top .wgba-brand img.wgba-brand-logo {
    height: 70px !important;
    max-height: 70px !important;
    max-width: min(240px, 52vw) !important;
  }
  .wgba-brand-text { max-width: none; overflow: visible; text-overflow: unset; white-space: nowrap; }
  .wgba-top-inner { gap: 6px; }
  .wgba-tut-item { padding: 14px; }
  .wgba-tut-item strong { font-size: 17px; }
  .wgba-card { padding: 14px 14px; margin: 12px 0; }
  .wgba-actions .wgba-btn { flex: 1 1 auto; text-align: center; justify-content: center; }
  .wgba-pager { flex-direction: column; }
  .wgba-pager .wgba-btn { width: 100%; text-align: center; }
  .wgba-article { padding: 12px 12px 36px; }
  .wgba-article-head h1 { font-size: 24px; }
  .wgba-objectives { padding: 12px 14px 12px 28px; }
  .wgba-example,
  .wgba-playground,
  .wgba-playground-slot { padding: 12px; margin: 14px 0; }
  .wgba-playground textarea {
    min-height: 168px;
    font-size: 16px; /* iOS: avoid input zoom */
  }
  .wgba-auth input[type="text"],
  .wgba-auth input[type="email"],
  .wgba-auth input[type="password"],
  .wgba-auth input:not([type]),
  .wgba-search input {
    font-size: 16px;
  }
  .wgba-code,
  .wgba-console,
  .wgba-note-body { font-size: 13px; padding: 10px; }
  .wgba-table-wrap { margin-inline: -4px; }
  .wgba-dash-links { grid-template-columns: 1fr; }
  .wgba-roadmap-list h2 { font-size: 18px; }
  .wgba-coming { padding: 12px; font-size: 15px; }
  .wgba-brand-panel { padding: 16px; }
  .wgba-brand-cta { padding: 18px; }
  .wgba-brand-cta .wgba-brand-actions { width: 100%; }
  .wgba-brand-cta .wgba-btn { flex: 1 1 auto; text-align: center; }
  .wgba-channel-card .wgba-btn { width: 100%; text-align: center; }
}

@media (max-width: 480px) {
  .wgba-wrap { width: min(100% - 20px, var(--wgba-max)); }
  .wgba-top-inner { padding: 0 8px; }
  .wgba-nav a,
  .wgba-nav-meta a { font-size: 12px; padding: 6px 6px; }
  .wgba-gear { width: 36px; height: 36px; }
  .wgba-btn-login { padding: 6px 10px; font-size: 12px; }
  .wgba-brand-text { font-size: 13px; max-width: 36vw; }
  .wgba-home-hero .wgba-actions,
  .wgba-page-hero .wgba-actions { flex-direction: column; }
  .wgba-home-hero .wgba-actions .wgba-btn,
  .wgba-page-hero .wgba-actions .wgba-btn { width: 100%; text-align: center; }
  .wgba-footer-inner { padding-top: 20px; }
}

/* Safe area (notched phones) */
@supports (padding: max(0px)) {
  .wgba-top-inner {
    padding-left: max(10px, env(safe-area-inset-left));
    padding-right: max(10px, env(safe-area-inset-right));
  }
  .wgba-footer { padding-bottom: env(safe-area-inset-bottom); }
}