/* RGZ Mechanical Deck + Learning Hub (frontend) */
.rgzd, .rgzl {
  --rgzd-accent: #38bdf8;
  --rgzd-ink: #0f172a;
  --rgzd-muted: #64748b;
  --rgzd-line: #e2e8f0;
  --rgzd-bg: #f8fafc;
  font-family: inherit;
  color: var(--rgzd-ink);
}
.rgzd *, .rgzl * { box-sizing: border-box; }

/* ---------- hero ---------- */
.rgzd-hero {
  position: relative;
  overflow: hidden;
  border-radius: 22px;
  padding: 46px 42px 40px;
  color: #f8fafc;
  background:
    radial-gradient(900px 320px at 85% -10%, color-mix(in srgb, var(--rgzd-accent) 34%, transparent), transparent 60%),
    radial-gradient(700px 300px at -5% 110%, rgba(232, 121, 60, .28), transparent 55%),
    linear-gradient(120deg, #0b1730 0%, #101f3d 55%, #132a52 100%);
  box-shadow: 0 24px 60px -24px rgba(15, 23, 42, .45);
  margin-bottom: 26px;
}
.rgzd-hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(148, 163, 184, .22) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(120deg, transparent 30%, #000 100%);
  pointer-events: none;
}
.rgzd-hero-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase;
  color: var(--rgzd-accent);
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .14);
  padding: 7px 14px; border-radius: 999px; margin-bottom: 18px;
}
.rgzd-hero h2 { margin: 0 0 10px; font-size: clamp(26px, 4vw, 40px); line-height: 1.12; font-weight: 900; letter-spacing: -.01em; color: #fff; }
.rgzd-hero p { margin: 0; max-width: 760px; color: #cbd5e1; font-size: 15.5px; line-height: 1.65; }
.rgzd-hero-stats { display: flex; flex-wrap: wrap; gap: 26px; margin-top: 26px; }
.rgzd-hero-stat b { display: block; font-size: 26px; font-weight: 900; color: #fff; }
.rgzd-hero-stat span { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: #94a3b8; }

/* ---------- deck tabs (Apps / Learning) ---------- */
.rgzd-tabsbar {
  display: inline-flex; gap: 6px; padding: 5px; margin: 0 0 24px;
  background: #fff; border: 1.5px solid var(--rgzd-line); border-radius: 999px;
  box-shadow: 0 8px 22px -12px rgba(15, 23, 42, .22);
}
.rgzd-tabbtn {
  display: inline-flex; align-items: center; gap: 8px; font-family: inherit;
  border: 2px solid transparent; background: transparent; color: var(--rgzd-muted);
  font-size: 13.5px; font-weight: 800; padding: 8px 20px; border-radius: 999px; cursor: pointer;
  transition: all .18s;
}
.rgzd-tabbtn svg { width: 16px; height: 16px; flex: 0 0 auto; }
.rgzd-tabbtn:hover { color: var(--rgzd-ink); border-color: color-mix(in srgb, var(--rgzd-accent) 55%, transparent); }
.rgzd-tabbtn.on {
  background: var(--rgzd-accent); color: #fff;
  box-shadow: 0 10px 20px -9px color-mix(in srgb, var(--rgzd-accent) 75%, transparent);
}
.rgzd-tabcount {
  font-size: 11px; font-weight: 900; line-height: 1; padding: 3px 8px; border-radius: 999px;
  background: color-mix(in srgb, var(--rgzd-accent) 12%, #fff); color: var(--rgzd-accent);
}
.rgzd-tabbtn.on .rgzd-tabcount { background: rgba(255, 255, 255, .24); color: #fff; }
.rgzd-pane { display: none; }
.rgzd-pane.on { display: block; animation: rgzdFade .22s ease; }
@keyframes rgzdFade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---------- toolbar ---------- */
.rgzd-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin: 0 0 22px; }
.rgzd-search {
  flex: 1 1 260px; display: flex; align-items: center; gap: 10px;
  background: #fff; border: 1.5px solid var(--rgzd-line); border-radius: 14px;
  padding: 11px 16px; transition: border-color .15s, box-shadow .15s;
}
.rgzd-search:focus-within { border-color: var(--rgzd-accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--rgzd-accent) 18%, transparent); }
.rgzd-search svg { width: 17px; height: 17px; stroke: var(--rgzd-muted); flex: 0 0 auto; }
.rgzd-search input { border: 0; outline: 0; background: transparent; width: 100%; font-size: 14.5px; color: var(--rgzd-ink); }
.rgzd-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.rgzd-chip {
  border: 1.5px solid var(--rgzd-line); background: #fff; color: var(--rgzd-muted);
  font-size: 12.5px; font-weight: 800; padding: 8px 15px; border-radius: 999px; cursor: pointer;
  transition: all .15s;
}
.rgzd-chip:hover { border-color: var(--rgzd-accent); color: var(--rgzd-ink); }
.rgzd-chip.on { background: var(--rgzd-ink); border-color: var(--rgzd-ink); color: #fff; }

/* ---------- app grid ---------- */
.rgzd-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(288px, 1fr)); gap: 18px; }
.rgzd-card {
  position: relative; display: flex; flex-direction: column;
  background: #fff; border: 1.5px solid var(--rgzd-line); border-radius: 18px;
  padding: 20px 20px 16px; overflow: hidden;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.rgzd-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: linear-gradient(90deg, var(--card-accent, var(--rgzd-accent)), transparent 130%);
  opacity: .9;
}
.rgzd-card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--card-accent, var(--rgzd-accent)) 55%, var(--rgzd-line)); box-shadow: 0 18px 44px -18px rgba(15, 23, 42, .28); }
.rgzd-card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; margin-bottom: 14px; }
.rgzd-icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; flex: 0 0 auto;
  background: color-mix(in srgb, var(--card-accent, var(--rgzd-accent)) 14%, #fff);
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--rgzd-accent)) 30%, #fff);
  color: var(--card-accent, var(--rgzd-accent));
}
.rgzd-icon svg { width: 28px; height: 28px; }
.rgzd-badges { display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; }
.rgzd-badge { font-size: 10.5px; font-weight: 800; letter-spacing: .04em; padding: 4px 9px; border-radius: 999px; background: #f1f5f9; color: #475569; }
.rgzd-badge.cat { background: color-mix(in srgb, var(--card-accent, var(--rgzd-accent)) 12%, #fff); color: color-mix(in srgb, var(--card-accent, var(--rgzd-accent)) 80%, #0f172a); }
.rgzd-card h3 { margin: 0 0 7px; font-size: 17.5px; font-weight: 900; letter-spacing: -.01em; }
.rgzd-card p { margin: 0 0 16px; font-size: 13.5px; line-height: 1.6; color: var(--rgzd-muted); flex: 1 1 auto; }
.rgzd-card-foot { display: flex; gap: 8px; flex-wrap: wrap; border-top: 1px dashed var(--rgzd-line); padding-top: 14px; }
.rgzd-btn {
  display: inline-flex; align-items: center; gap: 7px; text-decoration: none; cursor: pointer;
  font-size: 13px; font-weight: 800; padding: 8px 18px; border-radius: 999px; border: 2px solid transparent;
  transition: all .15s;
}
.rgzd-btn.primary { background: var(--rgzd-accent); border-color: var(--rgzd-accent); color: #fff; box-shadow: 0 10px 20px -10px color-mix(in srgb, var(--rgzd-accent) 70%, transparent); }
.rgzd-btn.primary:hover { background: color-mix(in srgb, var(--rgzd-accent) 85%, #000); border-color: color-mix(in srgb, var(--rgzd-accent) 85%, #000); transform: translateY(-1px); }
.rgzd-btn.ghost { border-color: color-mix(in srgb, var(--rgzd-ink) 22%, transparent); color: var(--rgzd-ink); background: transparent; }
.rgzd-btn.ghost:hover { color: #fff; background: var(--rgzd-accent); border-color: var(--rgzd-accent); }
.rgzd-btn.soon { background: #f1f5f9; color: #94a3b8; cursor: default; }
.rgzd-empty { padding: 40px; text-align: center; color: var(--rgzd-muted); border: 1.5px dashed var(--rgzd-line); border-radius: 16px; grid-column: 1 / -1; }

/* ---------- learn band on deck ---------- */
.rgzd-learnband {
  margin-top: 26px; border-radius: 20px; padding: 30px 34px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 20px;
  background: linear-gradient(110deg, color-mix(in srgb, var(--rgzd-accent) 12%, #fff), #fff 60%);
  border: 1.5px solid color-mix(in srgb, var(--rgzd-accent) 26%, #fff);
}
.rgzd-learnband .lb-icon { width: 54px; height: 54px; border-radius: 16px; display: grid; place-items: center; background: var(--rgzd-accent); color: #fff; flex: 0 0 auto; }
.rgzd-learnband .lb-icon svg { width: 30px; height: 30px; }
.rgzd-learnband h3 { margin: 0 0 4px; font-size: 18px; font-weight: 900; }
.rgzd-learnband p { margin: 0; color: var(--rgzd-muted); font-size: 13.5px; }
.rgzd-learnband .rgzd-btn { margin-left: auto; }

/* ---------- learning hub ---------- */
.rgzl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.rgzl-card {
  display: flex; flex-direction: column; background: #fff; border: 1.5px solid var(--rgzd-line);
  border-radius: 18px; padding: 20px; transition: transform .18s, box-shadow .18s, border-color .18s; position: relative;
}
.rgzl-cover {
  margin: -20px -20px 14px; aspect-ratio: 16 / 9; overflow: hidden;
  border-radius: 16px 16px 0 0; background: #f1f5f9;
  border-bottom: 1px solid var(--rgzd-line);
}
.rgzl-cover img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .3s ease; }
.rgzl-card:hover .rgzl-cover img { transform: scale(1.035); }
.rgzl-card:hover { transform: translateY(-3px); box-shadow: 0 16px 40px -18px rgba(15, 23, 42, .26); border-color: color-mix(in srgb, var(--topic-accent, var(--rgzd-accent)) 45%, var(--rgzd-line)); }
.rgzl-card-top { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; align-items: center; }
.rgzl-pill { font-size: 10.5px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; }
.rgzl-pill.topic-hydraulics { background: #e0f2fe; color: #0369a1; }
.rgzl-pill.topic-pneumatics { background: #ffedd5; color: #c2410c; }
.rgzl-pill.topic-general { background: #ede9fe; color: #6d28d9; }
.rgzl-pill.topic-electrical { background: #fef3c7; color: #b45309; }
.rgzl-pill.topic-cad { background: #e2e8f0; color: #475569; }
.rgzl-pill.topic-mechanisms { background: #ccfbf1; color: #0f766e; }
.rgzl-pill.level { background: #f1f5f9; color: #475569; }
.rgzl-read-flag { margin-left: auto; font-size: 11px; font-weight: 800; color: #16a34a; display: none; }
.rgzl-card.is-read .rgzl-read-flag { display: inline-flex; align-items: center; gap: 5px; }
.rgzl-card h3 { margin: 0 0 8px; font-size: 16.5px; font-weight: 900; line-height: 1.3; }
.rgzl-card p { margin: 0 0 14px; font-size: 13.5px; line-height: 1.62; color: var(--rgzd-muted); flex: 1 1 auto; }
.rgzl-card-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; border-top: 1px dashed var(--rgzd-line); padding-top: 13px; }
.rgzl-minutes { font-size: 12px; color: var(--rgzd-muted); font-weight: 700; }

/* ---------- lesson reader modal ---------- */
.rgzl-modal-backdrop {
  position: fixed; inset: 0; z-index: 99980; background: rgba(8, 15, 30, .62);
  backdrop-filter: blur(6px); display: flex; align-items: center; justify-content: center; padding: 24px;
  opacity: 0; pointer-events: none; transition: opacity .18s;
}
.rgzl-modal-backdrop.open { opacity: 1; pointer-events: auto; }
.rgzl-modal {
  background: #fff; border-radius: 20px; max-width: 780px; width: 100%; max-height: min(86vh, 900px);
  display: flex; flex-direction: column; overflow: hidden; box-shadow: 0 40px 90px -30px rgba(0, 0, 0, .5);
  transform: translateY(14px) scale(.985); transition: transform .18s;
}
.rgzl-modal-backdrop.open .rgzl-modal { transform: none; }
.rgzl-modal-head { padding: 22px 26px 16px; border-bottom: 1px solid var(--rgzd-line); display: flex; align-items: flex-start; gap: 14px; }
.rgzl-modal-head h2 { margin: 0; font-size: 21px; font-weight: 900; line-height: 1.25; flex: 1 1 auto; }
.rgzl-modal-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 9px; }
.rgzl-close {
  border: 0; background: #f1f5f9; color: #475569; width: 34px; height: 34px; border-radius: 10px;
  font-size: 17px; font-weight: 900; cursor: pointer; flex: 0 0 auto;
}
.rgzl-close:hover { background: #e2e8f0; color: #0f172a; }
.rgzl-modal-body { padding: 8px 26px 22px; overflow-y: auto; font-size: 14.5px; line-height: 1.75; color: #334155; }
.rgzl-modal-body h3 { margin: 22px 0 8px; font-size: 16px; font-weight: 900; color: var(--rgzd-ink); }
.rgzl-modal-body h4 { margin: 18px 0 6px; font-size: 14px; font-weight: 800; color: var(--rgzd-ink); }
.rgzl-modal-body p { margin: 0 0 12px; }
.rgzl-modal-body ul, .rgzl-modal-body ol { margin: 0 0 12px; padding-left: 22px; }
.rgzl-modal-body li { margin-bottom: 5px; }
.rgzl-modal-body code { background: #f1f5f9; border: 1px solid var(--rgzd-line); border-radius: 6px; padding: 1px 6px; font-size: 13px; }
.rgzl-formula {
  margin: 14px 0; padding: 13px 18px; border-radius: 12px; text-align: center;
  background: #f8fafc; border: 1.5px dashed #cbd5e1; font-family: Georgia, 'Times New Roman', serif;
  font-size: 16.5px; font-style: italic; color: var(--rgzd-ink); letter-spacing: .02em;
}
.rgzl-tip { margin: 14px 0; padding: 12px 16px; border-left: 4px solid var(--rgzd-accent); background: color-mix(in srgb, var(--rgzd-accent) 8%, #fff); border-radius: 0 12px 12px 0; font-size: 13.5px; }
.rgzl-fig { margin: 18px 0; }
.rgzl-fig img {
  width: 100%; height: auto; display: block; border-radius: 14px;
  border: 1.5px solid var(--rgzd-line); background: #f8fafc;
}
.rgzl-fig figcaption {
  margin-top: 8px; font-size: 12.5px; color: var(--rgzd-muted); font-style: italic; text-align: center;
}
.rgzl-modal-cover { margin: 0 0 16px; }
.rgzl-draw {
  margin: 14px 0 18px; border: 1.5px solid #dbe6f2; border-radius: 16px; overflow: hidden;
  background: #f3f7fc; box-shadow: 0 14px 30px -18px rgba(15, 42, 82, .25);
}
.rgzl-draw svg { display: block; width: 100%; height: auto; }
.rgzl-draw figcaption {
  padding: 9px 14px; font-size: 11.5px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase;
  color: #41597a; border-top: 1px solid #dbe6f2; background: #eaf1f9;
}
.rgzl-modal-foot { padding: 14px 26px; border-top: 1px solid var(--rgzd-line); display: flex; gap: 10px; align-items: center; background: #f8fafc; }
.rgzl-modal-foot .rgzl-minutes { margin-right: auto; }

@media (max-width: 640px) {
  .rgzd-hero { padding: 32px 22px 28px; border-radius: 16px; }
  .rgzd-learnband { padding: 22px; }
  .rgzl-modal { max-height: 92vh; }
}

/* ---------- profile pane ---------- */
.rgzp { max-width: 1080px; }
.rgzp [hidden] { display: none !important; }
.rgzp-signin {
  text-align: center; padding: 46px 30px; background: #fff;
  border: 1.5px dashed var(--rgzd-line); border-radius: 18px;
}
.rgzp-signin-icon {
  width: 62px; height: 62px; margin: 0 auto 14px; border-radius: 18px;
  display: grid; place-items: center; color: var(--rgzd-accent);
  background: color-mix(in srgb, var(--rgzd-accent) 10%, #fff);
  border: 1px solid color-mix(in srgb, var(--rgzd-accent) 26%, #fff);
}
.rgzp-signin-icon svg { width: 32px; height: 32px; }
.rgzp-signin h3 { margin: 0 0 8px; font-size: 19px; font-weight: 900; }
.rgzp-signin p { margin: 0 auto 8px; max-width: 560px; color: var(--rgzd-muted); font-size: 14px; line-height: 1.65; }
.rgzp-hint { font-size: 12.5px !important; color: #94a3b8 !important; font-style: italic; }
.rgzp-body { display: flex; flex-direction: column; gap: 18px; }
.rgzp-body.rgzp-loading { opacity: .45; pointer-events: none; }
.rgzp-head {
  display: flex; align-items: center; gap: 14px; background: #fff;
  border: 1.5px solid var(--rgzd-line); border-radius: 18px; padding: 16px 20px;
}
.rgzp-avatar {
  width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; flex: 0 0 auto;
  background: linear-gradient(135deg, var(--rgzd-accent), color-mix(in srgb, var(--rgzd-accent) 60%, #000));
  color: #fff; font-weight: 900; font-size: 19px; letter-spacing: .02em;
}
.rgzp-id { flex: 1 1 auto; min-width: 0; }
.rgzp-id b { display: block; font-size: 16.5px; font-weight: 900; }
.rgzp-id span { font-size: 13px; color: var(--rgzd-muted); }
.rgzp-badges { display: flex; flex-wrap: wrap; gap: 6px; }
.rgzp-src {
  font-size: 10.5px; font-weight: 800; letter-spacing: .04em; padding: 4px 10px; border-radius: 999px;
  background: color-mix(in srgb, var(--rgzd-accent) 10%, #fff); color: color-mix(in srgb, var(--rgzd-accent) 80%, #0f172a);
  border: 1px solid color-mix(in srgb, var(--rgzd-accent) 26%, #fff);
}
.rgzp-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 18px; }
.rgzp-card {
  background: #fff; border: 1.5px solid var(--rgzd-line); border-radius: 18px; padding: 18px 20px 16px;
}
.rgzp-card h4 { margin: 0 0 12px; font-size: 15px; font-weight: 900; letter-spacing: .01em; }
.rgzp-card h5 { margin: 0 0 8px; font-size: 13px; font-weight: 800; color: var(--rgzd-ink); }
.rgzp-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 12px; }
.rgzp-fields label { display: flex; flex-direction: column; gap: 4px; }
.rgzp-fields label span { font-size: 11.5px; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; color: var(--rgzd-muted); }
.rgzp-fields input {
  border: 1.5px solid var(--rgzd-line); border-radius: 10px; padding: 9px 12px;
  font-size: 14px; font-family: inherit; color: var(--rgzd-ink); background: #fff; outline: 0;
  transition: border-color .15s, box-shadow .15s;
}
.rgzp-fields input:focus { border-color: var(--rgzd-accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--rgzd-accent) 15%, transparent); }
.rgzp-fields input:disabled { background: #f8fafc; color: var(--rgzd-muted); cursor: not-allowed; }
.rgzp-foot { display: flex; align-items: center; gap: 12px; margin-top: 14px; }
.rgzp-status { font-size: 12.5px; font-weight: 700; color: var(--rgzd-muted); }
.rgzp-status.ok { color: #16a34a; }
.rgzp-status.err { color: #dc2626; }
.rgzp-progress { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.rgzp-bar {
  flex: 1 1 auto; height: 10px; border-radius: 999px; overflow: hidden;
  background: #eef2f7; border: 1px solid var(--rgzd-line);
}
.rgzp-bar i {
  display: block; height: 100%; width: 0; border-radius: 999px;
  background: linear-gradient(90deg, var(--rgzd-accent), color-mix(in srgb, var(--rgzd-accent) 55%, #f59e0b));
  transition: width .4s ease;
}
.rgzp-barlabel { font-size: 12px; font-weight: 800; color: var(--rgzd-muted); white-space: nowrap; }
.rgzp-readlist, .rgzp-dcol ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 5px; }
.rgzp-readlist li { font-size: 12.5px; color: #15803d; font-weight: 600; }
.rgzp-readlist li.more, .rgzp-readlist li.none, .rgzp-dcol li.none { color: var(--rgzd-muted); font-weight: 500; font-style: italic; }
.rgzp-designs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.rgzp-dcol li {
  display: flex; align-items: baseline; justify-content: space-between; gap: 10px;
  padding: 7px 10px; border: 1px solid var(--rgzd-line); border-radius: 10px; background: #f8fafc;
}
.rgzp-dcol li b { font-size: 13px; font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rgzp-dcol li span { font-size: 11px; color: var(--rgzd-muted); white-space: nowrap; }
@media (max-width: 860px) {
  .rgzp-grid, .rgzp-designs { grid-template-columns: 1fr; }
  .rgzp-head { flex-wrap: wrap; }
}

/* ---------- top bar with account chip ---------- */
.rgzd-topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  margin: 0 0 18px;
}
.rgzd-userwrap { position: relative; }
.rgzd-userchip {
  display: inline-flex; align-items: center; gap: 10px; cursor: pointer; font-family: inherit;
  background: #fff; border: 1.5px solid var(--rgzd-line); border-radius: 999px;
  padding: 5px 16px 5px 6px; font-size: 13.5px; font-weight: 800; color: var(--rgzd-ink);
  box-shadow: 0 8px 22px -12px rgba(15, 23, 42, .22);
  transition: border-color .15s, box-shadow .15s;
}
.rgzd-userchip:hover { border-color: var(--rgzd-accent); box-shadow: 0 10px 26px -12px color-mix(in srgb, var(--rgzd-accent) 45%, transparent); }
.rgzd-userchip-ava {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; overflow: hidden;
  background: color-mix(in srgb, var(--rgzd-accent) 10%, #fff); color: var(--rgzd-accent); flex: 0 0 auto;
}
.rgzd-userchip-ava svg { width: 100%; height: 100%; display: block; }
.rgzd-userchip-caret { width: 14px; height: 14px; color: var(--rgzd-muted); }
.rgzd-topbar-brand { font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase; color: #94a3b8; font-weight: 800; }
.rgzd-topbar-brand b { color: var(--rgzd-accent); }
.rgzd-usermenu {
  position: absolute; top: calc(100% + 8px); left: 0; z-index: 9900; min-width: 240px;
  background: #fff; border: 1.5px solid var(--rgzd-line); border-radius: 16px;
  box-shadow: 0 24px 60px -18px rgba(15, 23, 42, .35); padding: 8px;
  animation: rgzdFade .16s ease;
}
.rgzd-usermenu-head {
  padding: 10px 12px 12px; border-bottom: 1px dashed var(--rgzd-line); margin-bottom: 6px;
}
.rgzd-usermenu-head b { display: block; font-size: 14px; font-weight: 900; }
.rgzd-usermenu-head span { font-size: 12px; color: var(--rgzd-muted); }
.rgzd-usermenu-item {
  display: flex; align-items: center; gap: 10px; width: 100%; text-align: left;
  background: transparent; border: 0; border-radius: 10px; padding: 10px 12px;
  font-size: 13.5px; font-weight: 700; color: var(--rgzd-ink); cursor: pointer; font-family: inherit;
}
.rgzd-usermenu-item svg { width: 16px; height: 16px; color: var(--rgzd-muted); flex: 0 0 auto; }
.rgzd-usermenu-item:hover { background: color-mix(in srgb, var(--rgzd-accent) 8%, #fff); color: var(--rgzd-accent); }
.rgzd-usermenu-item:hover svg { color: var(--rgzd-accent); }
.rgzd-usermenu-item.danger { background: #fef2f2; color: #b91c1c; margin-top: 4px; }
.rgzd-usermenu-item.danger svg { color: #ef4444; }
.rgzd-usermenu-item.danger:hover { background: #dc2626; color: #fff; }
.rgzd-usermenu-item.danger:hover svg { color: #fff; }

/* ---------- deck modals (auth / profile / designs) ---------- */
.rgzpm-backdrop {
  position: fixed; inset: 0; z-index: 99990; background: rgba(8, 15, 30, .62);
  backdrop-filter: blur(6px); display: flex; align-items: center; justify-content: center; padding: 22px;
  opacity: 0; pointer-events: none; transition: opacity .18s;
}
.rgzpm-backdrop.open { opacity: 1; pointer-events: auto; }
.rgzpm {
  background: #fff; border-radius: 20px; width: 100%; max-width: 560px; max-height: min(88vh, 920px);
  display: flex; flex-direction: column; overflow: hidden;
  box-shadow: 0 40px 90px -30px rgba(0, 0, 0, .5);
  transform: translateY(14px) scale(.985); transition: transform .18s;
}
.rgzpm-backdrop.open .rgzpm { transform: none; }
.rgzpm-designs { max-width: 900px; }
.rgzpm-head {
  padding: 20px 24px 14px; border-bottom: 1px solid var(--rgzd-line);
  display: flex; align-items: flex-start; gap: 14px;
}
.rgzpm-title { margin: 0; font-size: 20px; font-weight: 900; line-height: 1.25; }
.rgzpm-sub { margin-top: 5px; font-size: 12.5px; color: var(--rgzd-muted); }
.rgzpm-close {
  margin-left: auto; border: 0; background: #f1f5f9; color: #475569; width: 34px; height: 34px;
  border-radius: 10px; font-size: 17px; font-weight: 900; cursor: pointer; flex: 0 0 auto;
}
.rgzpm-close:hover { background: #e2e8f0; color: #0f172a; }
.rgzpm-tabs { display: flex; gap: 6px; padding: 12px 24px 0; }
.rgzpm-tab {
  border: 1.5px solid var(--rgzd-line); background: #fff; color: var(--rgzd-muted);
  font-size: 12.5px; font-weight: 800; padding: 7px 16px; border-radius: 999px; cursor: pointer;
}
.rgzpm-tab.on { background: var(--rgzd-accent); border-color: var(--rgzd-accent); color: #fff; box-shadow: 0 8px 18px -8px color-mix(in srgb, var(--rgzd-accent) 65%, transparent); }
.rgzpm-body { padding: 16px 24px 20px; overflow-y: auto; }
.rgzpm-pane { display: none; }
.rgzpm-pane.on { display: block; }
.rgzpm-fld { display: block; margin-bottom: 12px; }
.rgzpm-fld span { display: block; font-size: 11.5px; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; color: var(--rgzd-muted); margin-bottom: 5px; }
.rgzpm-fld input {
  width: 100%; border: 1.5px solid var(--rgzd-line); border-radius: 10px; padding: 10px 13px;
  font-size: 14px; font-family: inherit; color: var(--rgzd-ink); background: #fff; outline: 0;
}
.rgzpm-fld input:focus { border-color: var(--rgzd-accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--rgzd-accent) 15%, transparent); }
.rgzpm-submit { width: 100%; justify-content: center; margin-top: 4px; }
.rgzpm-submit[data-rgz-auth-go="signin"] { background: var(--rgzd-accent); border-color: var(--rgzd-accent); color: #fff; }
.rgzpm-submit[data-rgz-auth-go="signin"]:hover { background: color-mix(in srgb, var(--rgzd-accent) 85%, #000); border-color: color-mix(in srgb, var(--rgzd-accent) 85%, #000); }
.rgzpm-submit[data-rgz-auth-go="signup"] { background: #0f172a; border-color: #0f172a; color: #fff; }
.rgzpm-submit[data-rgz-auth-go="signup"]:hover { background: #1e293b; border-color: #1e293b; }
.rgzpm-submit:disabled { opacity: .55; cursor: progress; }
.rgzpm-status { min-height: 18px; margin-top: 12px; font-size: 12.5px; font-weight: 700; color: var(--rgzd-muted); }
.rgzpm-status.ok { color: #16a34a; }
.rgzpm-status.err { color: #dc2626; }
.rgzpm-sec { margin: 18px 0 10px; font-size: 13px; font-weight: 900; letter-spacing: .03em; text-transform: uppercase; color: var(--rgzd-muted); }
.rgzpm-sec:first-child { margin-top: 0; }
.rgzpm-foot {
  padding: 14px 24px; border-top: 1px solid var(--rgzd-line);
  display: flex; align-items: center; justify-content: space-between; gap: 12px; background: #f8fafc;
}

/* ---------- avatar picker ---------- */
.rgzp-avatars {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(44px, 1fr)); gap: 8px;
  max-height: 210px; overflow-y: auto; padding: 2px;
}
.rgzp-ava-opt {
  aspect-ratio: 1; border-radius: 50%; border: 2.5px solid transparent; background: transparent;
  padding: 2px; cursor: pointer; transition: transform .12s, border-color .12s;
}
.rgzp-ava-opt svg { width: 100%; height: 100%; display: block; }
.rgzp-ava-opt:hover { transform: scale(1.1); }
.rgzp-ava-opt.on { border-color: var(--rgzd-accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--rgzd-accent) 25%, transparent); }

/* ---------- my designs modal: blueprint cards ---------- */
.rgzdsg-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin-bottom: 8px;
}
.rgzdsg-none {
  grid-column: 1/-1; padding: 22px; text-align: center; color: var(--rgzd-muted); font-size: 13px;
  border: 1.5px dashed var(--rgzd-line); border-radius: 14px;
}
.rgzdsg-card {
  display: flex; flex-direction: column; text-decoration: none; color: inherit;
  border: 1.5px solid var(--rgzd-line); border-radius: 16px; overflow: hidden; background: #fff;
  transition: transform .16s, box-shadow .16s, border-color .16s;
}
.rgzdsg-card:hover { transform: translateY(-3px); border-color: var(--rgzd-accent); box-shadow: 0 16px 40px -18px rgba(15, 23, 42, .3); }
.rgzdsg-thumb {
  display: block; aspect-ratio: 16/10; overflow: hidden; position: relative;
  background:
    linear-gradient(rgba(99, 122, 167, .14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 122, 167, .14) 1px, transparent 1px),
    linear-gradient(145deg, #0b1730, #122a52);
  background-size: 22px 22px, 22px 22px, cover;
  border-bottom: 1px solid var(--rgzd-line);
}
.rgzdsg-thumb > svg { width: 100%; height: 100%; display: block; }
.rgzdsg-ph {
  position: absolute; inset: 0; display: grid; place-items: center; color: rgba(148, 178, 230, .5);
}
.rgzdsg-ph svg { width: 44px; height: 44px; }
.rgzdsg-meta { display: block; padding: 10px 14px 4px; }
.rgzdsg-meta b { display: block; font-size: 13.5px; font-weight: 800; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rgzdsg-meta span { font-size: 11.5px; color: var(--rgzd-muted); }
.rgzdsg-open {
  display: block; padding: 8px 14px 12px; font-size: 12px; font-weight: 800; color: var(--rgzd-accent);
}
.rgzdsg-card:hover .rgzdsg-open { text-decoration: underline; }

/* ---------- unit converter ---------- */
.rgzc-card {
  background: #fff; border: 1.5px solid var(--rgzd-line); border-radius: 20px;
  padding: 26px 28px 20px; max-width: 860px;
}
.rgzc-head { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 20px; }
.rgzc-icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; flex: 0 0 auto;
  background: color-mix(in srgb, var(--rgzd-accent) 12%, #fff);
  border: 1px solid color-mix(in srgb, var(--rgzd-accent) 30%, #fff); color: var(--rgzd-accent);
}
.rgzc-icon svg { width: 28px; height: 28px; }
.rgzc-head h3 { margin: 0 0 4px; font-size: 19px; font-weight: 900; }
.rgzc-head p { margin: 0; font-size: 13.5px; color: var(--rgzd-muted); line-height: 1.55; }
.rgzc-quantity { margin-bottom: 18px; }
.rgzc-quantity > label { display: block; font-size: 11.5px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--rgzd-muted); margin-bottom: 8px; }
.rgzc-qtysel {
  width: 100%; appearance: none; cursor: pointer;
  border: 1.5px solid var(--rgzd-line); border-radius: 12px; background: #fff;
  padding: 11px 40px 11px 14px; font-size: 14px; font-weight: 800; font-family: inherit; color: var(--rgzd-ink);
  background-image:
    linear-gradient(45deg, transparent 49%, var(--rgzd-muted) 50%),
    linear-gradient(-45deg, transparent 49%, var(--rgzd-muted) 50%);
  background-position: calc(100% - 20px) 55%, calc(100% - 14px) 55%;
  background-size: 6px 6px; background-repeat: no-repeat;
}
.rgzc-qtysel:hover { border-color: var(--rgzd-accent); }
.rgzc-qtysel:focus { outline: 0; border-color: var(--rgzd-accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--rgzd-accent) 14%, transparent); }
.rgzc-qtysel optgroup { font-weight: 900; color: var(--rgzd-accent); background: color-mix(in srgb, var(--rgzd-accent) 6%, #fff); font-style: normal; }
.rgzc-qtysel optgroup option { font-weight: 700; color: var(--rgzd-ink); background: #fff; padding: 6px 10px; }
.rgzc-grid { display: grid; grid-template-columns: 1fr auto 1fr; gap: 14px; align-items: end; }
.rgzc-lbl { display: block; font-size: 11.5px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--rgzd-muted); margin-bottom: 7px; }
.rgzc-num, .rgzc-unit {
  width: 100%; border: 1.5px solid var(--rgzd-line); border-radius: 12px; padding: 12px 14px;
  font-size: 16px; font-family: inherit; color: var(--rgzd-ink); background: #fff; outline: 0;
  transition: border-color .15s, box-shadow .15s; box-sizing: border-box;
}
.rgzc-num { font-weight: 800; font-size: 20px; margin-bottom: 8px; }
.rgzc-unit { font-size: 13.5px; font-weight: 700; cursor: pointer; }
.rgzc-num:focus, .rgzc-unit:focus { border-color: var(--rgzd-accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--rgzd-accent) 15%, transparent); }
.rgzc-swap {
  width: 42px; height: 42px; border-radius: 50%; border: 1.5px solid var(--rgzd-line); background: #fff;
  display: grid; place-items: center; cursor: pointer; color: var(--rgzd-accent);
  transition: all .16s; margin-bottom: 4px;
}
.rgzc-swap svg { width: 19px; height: 19px; }
.rgzc-swap:hover { background: var(--rgzd-accent); border-color: var(--rgzd-accent); color: #fff; transform: rotate(180deg); }
.rgzc-out {
  border: 1.5px dashed color-mix(in srgb, var(--rgzd-accent) 45%, var(--rgzd-line)); border-radius: 12px;
  padding: 12px 14px; font-size: 24px; font-weight: 900; color: var(--rgzd-accent);
  background: color-mix(in srgb, var(--rgzd-accent) 5%, #fff);
  margin-bottom: 8px; min-height: 30px; word-break: break-all;
}
.rgzc-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 14px; }
.rgzc-formula { font-size: 12.5px; color: var(--rgzd-muted); font-weight: 600; }
.rgzc-copy {
  display: inline-flex; align-items: center; gap: 7px; border: 1.5px solid var(--rgzd-line);
  background: #fff; color: var(--rgzd-muted); font-size: 12px; font-weight: 800;
  padding: 7px 14px; border-radius: 999px; cursor: pointer; font-family: inherit;
}
.rgzc-copy svg { width: 14px; height: 14px; }
.rgzc-copy:hover { border-color: var(--rgzd-accent); color: var(--rgzd-accent); }
.rgzc-copy.copied { border-color: #16a34a; color: #16a34a; }
@media (max-width: 720px) {
  .rgzc-grid { grid-template-columns: 1fr; }
  .rgzc-swap { margin: 0 auto; transform: rotate(90deg); }
  .rgzc-swap:hover { transform: rotate(270deg); }
  .rgzd-topbar-brand { display: none; }
}

/* ---------------- auth modal & account menu: contrast hardening ----------------
   The deck modals sit outside the accent scope on some builds, so every
   accent-dependent color gets an explicit hex fallback. */
.rgzpm-fld input {
  background: #ffffff;
  border: 1.5px solid #cbd5e1;
  color: #0f172a;
}
.rgzpm-fld input::placeholder { color: #94a3b8; }
.rgzpm-fld input:focus { border-color: var(--rgzd-accent, #eb4e3c); box-shadow: 0 0 0 4px color-mix(in srgb, var(--rgzd-accent, #eb4e3c) 15%, transparent); }
.rgzpm-tab { background: #f1f5f9; border-color: #e2e8f0; color: #0f172a; }
.rgzpm-tab.on { background: var(--rgzd-accent, #eb4e3c); border-color: var(--rgzd-accent, #eb4e3c); color: #ffffff; }
.rgzpm-submit[data-rgz-auth-go="signin"] { background: var(--rgzd-accent, #eb4e3c); border-color: var(--rgzd-accent, #eb4e3c); color: #ffffff; }
.rgzpm-submit[data-rgz-auth-go="signin"]:hover { background: color-mix(in srgb, var(--rgzd-accent, #eb4e3c) 85%, #000); border-color: color-mix(in srgb, var(--rgzd-accent, #eb4e3c) 85%, #000); color: #ffffff; }
.rgzpm-submit[data-rgz-auth-go="signup"] { background: #0f172a; border-color: #0f172a; color: #ffffff; }
.rgzpm-submit[data-rgz-auth-go="signup"]:hover { background: #1e293b; border-color: #1e293b; color: #ffffff; }
.rgzpm-status.err { color: #dc2626; }
.rgzpm-status.ok { color: #16a34a; }
.rgzd-usermenu-item { background: #ffffff; color: #0f172a; }
.rgzd-usermenu-item:hover { background: #f1f5f9; color: #0f172a; }
.rgzd-usermenu-item.danger { background: #fef2f2; color: #b91c1c; }
.rgzd-usermenu-item.danger svg { stroke: #ef4444; }
.rgzd-usermenu-item.danger:hover { background: #dc2626; color: #ffffff; }
.rgzd-usermenu-item.danger:hover svg { stroke: #ffffff; }

/* ---------- converter pinned to the hero (desktop) + mobile collapsible ---------- */
.rgzd-hero.has-conv { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(350px, 440px); gap: 30px; align-items: center; }
.rgzd-hero-main, .rgzd-hero-conv { position: relative; z-index: 1; }
.rgzd-hero-conv .rgzc-card {
  height: 100%; box-sizing: border-box; padding: 18px 20px 14px; border-radius: 18px;
  box-shadow: 0 18px 44px -18px rgba(2, 8, 23, .55); max-width: none;
}
.rgzd-hero-conv .rgzc-head { margin-bottom: 12px; gap: 12px; }
.rgzd-hero-conv .rgzc-icon { width: 40px; height: 40px; border-radius: 11px; }
.rgzd-hero-conv .rgzc-icon svg { width: 22px; height: 22px; }
.rgzd-hero-conv .rgzc-head h3 { font-size: 15.5px; }
.rgzd-hero-conv .rgzc-head p { font-size: 12px; }
.rgzd-hero-conv .rgzc-quantity { margin-bottom: 12px; }
.rgzd-hero-conv .rgzc-num { font-size: 17px; padding: 9px 12px; }
.rgzd-hero-conv .rgzc-out { font-size: 19px; padding: 9px 12px; min-height: 22px; }
.rgzd-hero-conv .rgzc-meta { margin-top: 10px; }
.rgzd-convm { display: none; margin: 0 0 18px; border: 1.5px solid var(--rgzd-line); border-radius: 16px; background: #fff; overflow: hidden; }
.rgzd-convm > summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 10px;
  padding: 14px 16px; font-size: 14px; font-weight: 900; color: var(--rgzd-ink); user-select: none;
}
.rgzd-convm > summary::-webkit-details-marker { display: none; }
.rgzd-convm > summary svg { width: 18px; height: 18px; color: var(--rgzd-accent); flex: 0 0 auto; }
.rgzd-convm > summary .rgzd-convm-hint { margin-left: auto; font-size: 11px; font-weight: 700; color: var(--rgzd-muted); }
.rgzd-convm[open] > summary { border-bottom: 1.5px solid var(--rgzd-line); background: color-mix(in srgb, var(--rgzd-accent) 4%, #fff); }
.rgzd-convm .rgzc-card { border: 0; border-radius: 0; max-width: none; padding: 16px 16px 14px; }
@media (max-width: 1023px) {
  .rgzd-hero.has-conv { grid-template-columns: 1fr; }
  .rgzd-hero-conv { display: none; }
  .rgzd-convm { display: block; }
}
.rgzd-convm.always { display: block; }

/* ---------- animated learning figures (GIF) ---------- */
.rgzl-anim { text-align: center; }
.rgzl-anim img {
  display: inline-block; max-width: 100%; border-radius: 12px;
  border: 1.5px solid var(--rgzd-line); background: #eef3fb;
  image-rendering: auto; box-shadow: 0 10px 28px -18px rgba(15,23,42,.35);
}
.rgzl-anim figcaption { font-size: 12.5px; color: var(--rgzd-muted); margin-top: 8px; font-style: italic; }
.rgzl-anim::before {
  content: "▶ animated"; display: inline-block; font-size: 10px; font-weight: 900;
  letter-spacing: .12em; text-transform: uppercase; color: #fff;
  background: var(--rgzd-accent, #eb4e3c); border-radius: 999px; padding: 3px 10px; margin-bottom: 6px;
}