/* ============================================================
   w3schools.css — clean recreation of a W3Schools tutorial page
   ============================================================ */
body.w3s {
  --brand: #04AA6D;          /* W3Schools green (drives the rewarded CTA/progress) */
  --brand-ink: #ffffff;
  --green: #04AA6D;
  --green-dark: #059862;
  --dark: #282A35;           /* dark tutorials/nav bar */
  --paper: #ffffff;
  --ink: #000000;
  --muted: #555555;
  --rule: #e2e2e2;
  --side: #f1f1f1;
  margin: 0;
  font-family: "Source Sans 3", "Segoe UI", Verdana, system-ui, sans-serif;
  font-size: 16px; line-height: 1.6; color: var(--ink); background: #fff;
}

/* ---- top white bar ---- */
.w3-topbar {
  display: flex; align-items: center; gap: 22px;
  padding: 8px 16px; border-bottom: 1px solid var(--rule);
  font-size: 15px;
}
.w3-logo { display: inline-flex; align-items: center; gap: 0; text-decoration: none; font-weight: 800; font-size: 22px; color: var(--ink); }
.w3-logo .badge { background: var(--green); color: #fff; font-weight: 800; padding: 2px 7px; border-radius: 5px; letter-spacing: -.5px; }
.w3-logo .word { color: #000; }
.w3-logo .dotcom { color: var(--green); }
.w3-topnav { display: flex; align-items: center; gap: 18px; }
.w3-topnav a { text-decoration: none; color: #000; font-weight: 600; }
.w3-topnav a:hover { color: var(--green); }
.w3-topnav .caret { color: #777; font-size: 11px; }
.w3-search { display: flex; align-items: center; gap: 8px; background: #fff; border: 1px solid #ccc; border-radius: 4px; padding: 7px 10px; color: #9a9a9a; width: 170px; }
.w3-search svg { width: 15px; height: 15px; }
.w3-kebab { color: #000; font-weight: 800; letter-spacing: 1px; }
.w3-spacer { flex: 1; }
.w3-right { display: flex; align-items: center; gap: 18px; }
.w3-right a { text-decoration: none; color: #000; font-weight: 600; }
.w3-right a:hover { color: var(--green); }
.w3-signin { background: var(--green); color: #fff !important; padding: 9px 20px; border-radius: 5px; font-weight: 700; }
.w3-signin:hover { background: var(--green-dark); color: #fff !important; }

/* ---- dark tutorials tab bar ---- */
.w3-tabs { background: var(--dark); position: relative; }
.w3-tabs ul {
  display: flex; align-items: stretch; gap: 0; list-style: none; margin: 0; padding: 0;
  overflow-x: auto; scrollbar-width: none;
}
.w3-tabs ul::-webkit-scrollbar { display: none; }
.w3-tabs a {
  display: flex; align-items: center; height: 42px; padding: 0 15px;
  color: #fff; text-decoration: none; font-size: 14px; font-weight: 700; white-space: nowrap;
}
.w3-tabs a:hover { background: #3a3d4a; }
.w3-tabs li.active a { background: var(--green); color: #fff; }
.w3-tabs .chev { position: absolute; right: 0; top: 0; height: 42px; width: 38px; display: grid; place-items: center; background: var(--dark); color: #fff; font-size: 18px; }

/* ---- layout ---- */
.w3-layout { display: grid; grid-template-columns: 232px minmax(0, 1fr); }
.w3-side {
  background: var(--side); padding: 14px 0 60px; min-height: 100vh;
  font-size: 14.5px;
}
.w3-side a { display: block; padding: 5px 18px; text-decoration: none; color: #000; }
.w3-side a:hover { background: #ddd; }
.w3-side a.active { background: var(--green); color: #fff; font-weight: 700; }
.w3-side .group { padding: 22px 18px 6px; font-weight: 800; font-size: 17px; color: #000; }

.w3-main { padding: 22px 28px 80px; max-width: 920px; }
.w3-main .top-actions { display: flex; align-items: center; justify-content: space-between; }
.w3-h1 { font-size: 42px; font-weight: 400; margin: 4px 0 18px; line-height: 1.1; }
.w3-bookmark { color: var(--green); }
.w3-bookmark svg { width: 26px; height: 26px; }
.w3-pager { display: flex; justify-content: space-between; margin: 0 0 26px; }
.w3-btn { background: var(--green); color: #fff; border: 0; border-radius: 5px; padding: 10px 18px; font-weight: 700; font-size: 15px; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.w3-btn:hover { background: var(--green-dark); }
.w3-btn.ghost { visibility: hidden; }

.w3-main h2 { font-size: 30px; font-weight: 400; margin: 34px 0 14px; }
.w3-main p { margin: 0 0 16px; }
.w3-main a.inline { color: var(--green); }
.w3-main ul { margin: 0 0 18px; padding-left: 22px; }
.w3-main li { margin: 0 0 8px; }
.w3-learn { margin: 8px 0 22px; }

@media (max-width: 900px) {
  .w3-layout { grid-template-columns: 1fr; }
  .w3-side { min-height: 0; padding-bottom: 20px; }
  .w3-topnav, .w3-search, .w3-right { display: none; }
  .w3-topbar { gap: 14px; }
}