:root {
  --blue: #417AAB;
  --blue-dark: #35638b;
  --green: #9ABD32;
  --ink: #22303c;
  --dim: #5c6b7a;
  --ground: #f5f8fb;
  --panel: #ffffff;
  --line: #dde4ec;
  --img-bg: #ffffff;
  --bg-blue-tint: #eef4f9;
  --bg-green-tint: #f5f9ec;
  --bg-error: #faf0ed;
  --border-error: #c0563c;
}
[data-theme="dark"] {
  --blue: #5b9fd4;
  --blue-dark: #4a87bb;
  --green: #a8cf35;
  --ink: #e4edf5;
  --dim: #8fa0b3;
  --ground: #0f1923;
  --panel: #192636;
  --line: #283a4e;
  --img-bg: #1e2e3e;
  --bg-blue-tint: #0a1e2e;
  --bg-green-tint: #0c1a06;
  --bg-error: #1e0e0a;
  --border-error: #d06550;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--ground); color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif; line-height: 1.55;
}
a { color: var(--blue); }
/* Branded keyboard-focus ring (only on keyboard focus, not mouse clicks).
   Outline follows each control's own border-radius, so pills stay round. */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}
.site-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 24px; background: var(--panel); border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; text-decoration: none; color: var(--blue); font-size: 1.05rem; }
.site-header nav { display: flex; gap: 18px; align-items: center; }
.site-header nav a { color: var(--dim); text-decoration: none; }
.theme-btn {
  background: none; border: none; cursor: pointer; color: var(--dim);
  font-size: 1rem; padding: 0; line-height: 1; visibility: hidden;
}
.theme-btn:hover { color: var(--ink); }
main { max-width: 1080px; margin: 0 auto; padding: 32px 24px 64px; }
.site-footer { text-align: center; color: var(--dim); font-size: .85rem; padding: 24px; border-top: 1px solid var(--line); }
.loading { color: var(--dim); }

/* Hub */
.hero h1 { font-size: 1.9rem; margin: 0 0 6px; letter-spacing: -.01em; }
.hero p { color: var(--dim); margin: 0 0 18px; max-width: 60ch; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.filters button {
  border: 1px solid var(--line); background: var(--panel); color: var(--dim);
  border-radius: 999px; padding: 5px 14px; font-size: .85rem; cursor: pointer;
}
.filters button.active { background: var(--blue); border-color: var(--blue); color: #fff; font-weight: 600; }
.device-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; }
.device-card {
  display: block; background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  padding: 14px; text-decoration: none; color: inherit; transition: border-color .15s, box-shadow .15s;
}
.device-card:hover { border-color: var(--blue); box-shadow: 0 4px 14px -8px rgba(65,122,171,.5); }
.device-card img { width: 100%; aspect-ratio: 1; object-fit: contain; border-radius: 6px; background: var(--img-bg); }
.device-card h3 { margin: 10px 0 2px; font-size: 1rem; }
.device-card p { margin: 0; color: var(--dim); font-size: .82rem; }
.device-card .go { color: var(--blue); font-weight: 600; font-size: .85rem; margin-top: 8px; display: inline-block; }

/* Device wizard */
.device-page .back { display: inline-block; margin-bottom: 16px; text-decoration: none; color: var(--dim); }
.device-head { display: flex; gap: 20px; align-items: center; margin-bottom: 20px; }
.device-head img { width: 110px; height: 110px; object-fit: contain; background: var(--img-bg); border: 1px solid var(--line); border-radius: 10px; }
.device-head h1 { margin: 0; font-size: 1.6rem; }
.device-head p { margin: 2px 0 6px; color: var(--dim); }
.device-head .links { font-size: .85rem; }
.step { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; margin-bottom: 14px; }
.step h2 { margin: 0 0 10px; font-size: 1.05rem; display: flex; align-items: center; gap: 10px; }
.step h2 .num {
  width: 26px; height: 26px; border-radius: 50%; background: var(--blue); color: #fff;
  display: inline-grid; place-items: center; font-size: .85rem; flex: none;
}
.picker { display: flex; gap: 24px; flex-wrap: wrap; }
.picker .group label { display: block; font-size: .78rem; color: var(--dim); margin-bottom: 5px; text-transform: uppercase; letter-spacing: .04em; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg button { border: 0; background: var(--panel); color: var(--dim); padding: 7px 16px; font-size: .88rem; cursor: pointer; }
.seg button.active { background: var(--blue); color: #fff; font-weight: 600; }
esp-web-install-button button, .install-btn {
  background: var(--blue); color: #fff; border: 0; border-radius: 8px;
  padding: 10px 22px; font-size: .95rem; font-weight: 700; cursor: pointer;
}
.fallback { border-left: 3px solid var(--blue); background: var(--bg-blue-tint); border-radius: 0 8px 8px 0; padding: 12px 16px; }
.fallback ul { margin: 8px 0 0; padding-left: 20px; }
.release-notes { border-left: 3px solid var(--green); background: var(--bg-green-tint); border-radius: 0 8px 8px 0; padding: 12px 16px; margin-top: 14px; font-size: .88rem; }
.release-notes summary { cursor: pointer; font-weight: 600; }
.release-notes pre { white-space: pre-wrap; font-family: inherit; margin: 8px 0; }
.done-check { color: var(--green); font-weight: 700; }
.customize { margin: 4px 0 14px; font-size: .9rem; }
.customize summary { cursor: pointer; color: var(--blue); font-weight: 600; }
.customize p { margin: 8px 0 0; color: var(--dim); }
.customize code { background: var(--bg-blue-tint); padding: 1px 5px; border-radius: 4px; }
.error-box { border-left: 3px solid var(--border-error); background: var(--bg-error); border-radius: 0 8px 8px 0; padding: 12px 16px; }