/* ============================================================================
   RAD UI  -  "Editorial Glass" design system
   Shared house style for all Rad Consultants product apps.
   Drop in:  <link rel="stylesheet" href="/_shared/rad-ui.css">
             <script src="/_shared/rad-ui.js"></script>
   Themes:   dark (default) + light, via html[data-theme].
   Source of truth for tokens: frontend-design skill (sleek-glass).
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Inter+Tight:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ---------- tokens: dark (default) ---------- */
:root {
  --font-display: "Instrument Serif", ui-serif, Georgia, serif;
  --font-body:    "Inter Tight", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

  --bg:             #0a0612;
  --bg-elevated:    #15102a;
  --surface-glass:  rgba(168, 85, 247, 0.06);
  --surface-strong: rgba(168, 85, 247, 0.12);
  --surface-solid:  #120e22;
  --border-glass:   rgba(255, 255, 255, 0.09);
  --border-bright:  rgba(255, 255, 255, 0.17);

  --primary:      #a855f7;
  --primary-deep: #6d28d9;
  --accent:       #ec4899;
  --signal:       #fde047;

  --text:       #f5f3ff;
  --text-muted: rgba(245, 243, 255, 0.64);
  --text-faint: rgba(245, 243, 255, 0.40);

  --ok:   #34d399;
  --warn: #fbbf24;
  --err:  #f87171;
  --info: #60a5fa;
  --teal: #2dd4bf;
  --rose: #fb7185;

  --blur-glass: blur(20px) saturate(140%);
  --blur-nav:   blur(24px) saturate(160%);
  --glow-primary: 0 0 34px rgba(168, 85, 247, 0.42);
  --glow-accent:  0 0 30px rgba(236, 72, 153, 0.42);
  --glow-signal:  0 0 22px rgba(253, 224, 71, 0.38);
  --shadow-sm: 0 6px 20px rgba(0, 0, 0, 0.30);
  --shadow:    0 16px 46px rgba(0, 0, 0, 0.42);

  --r-sm: 8px; --r-md: 14px; --r-lg: 22px; --r-xl: 32px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --orb-opacity: 0.5;
  --grain-opacity: 0.05;
  color-scheme: dark;
}

/* ---------- tokens: light ---------- */
html[data-theme="light"] {
  --bg:             #f3f0fb;
  --bg-elevated:    #ffffff;
  --surface-glass:  rgba(255, 255, 255, 0.72);
  --surface-strong: rgba(168, 85, 247, 0.09);
  --surface-solid:  #ffffff;
  --border-glass:   rgba(24, 16, 48, 0.10);
  --border-bright:  rgba(124, 58, 237, 0.30);

  --primary:      #7c3aed;
  --primary-deep: #6d28d9;
  --accent:       #db2777;
  --signal:       #eab308;

  --text:       #1a1030;
  --text-muted: rgba(26, 16, 48, 0.66);
  --text-faint: rgba(26, 16, 48, 0.44);

  --glow-primary: 0 8px 26px rgba(124, 58, 237, 0.20);
  --glow-accent:  0 8px 24px rgba(219, 39, 119, 0.20);
  --glow-signal:  0 0 0 rgba(0,0,0,0);
  --shadow-sm: 0 6px 18px rgba(60, 40, 110, 0.10);
  --shadow:    0 20px 50px rgba(60, 40, 110, 0.16);

  --orb-opacity: 0.28;
  --grain-opacity: 0.035;
  color-scheme: light;
}

/* ---------- reset + base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* background void: one ambient orb + grain, injected by rad-ui.js */
.rad-void { position: fixed; inset: 0; z-index: -1; overflow: hidden; background: var(--bg); }
.rad-void::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(60vw 55vw at 82% -12%, color-mix(in srgb, var(--primary) 26%, transparent), transparent 60%),
    radial-gradient(46vw 46vw at -8% 108%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 58%);
}
.rad-orb {
  position: absolute; width: 560px; height: 560px; border-radius: 50%;
  top: -160px; left: 58%;
  background: var(--primary);
  filter: blur(150px); opacity: var(--orb-opacity);
  animation: rad-drift 30s var(--ease) infinite alternate;
}
.rad-grain {
  position: absolute; inset: 0; pointer-events: none; opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}
@keyframes rad-drift { 0% { transform: translate(0,0) scale(1); } 100% { transform: translate(-46px, 40px) scale(1.1); } }

/* ---------- layout ---------- */
.rad-wrap { max-width: 920px; margin: 0 auto; padding: 0 20px 90px; }
.rad-wrap.narrow { max-width: 800px; }
.rad-row { display: flex; align-items: center; gap: 12px; }
.rad-row-between { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.rad-spacer { flex: 1; }
.hidden { display: none !important; }

/* ---------- typography ---------- */
h1, h2, h3 { font-family: var(--font-display); font-weight: 400; letter-spacing: -0.01em; line-height: 1.08; }
.rad-eyebrow { font-family: var(--font-mono); font-size: 11px; font-weight: 500; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--text-faint); }
.rad-display {
  font-family: var(--font-display); font-size: clamp(30px, 5vw, 46px); line-height: 1.02; letter-spacing: -0.015em;
  background: linear-gradient(118deg, var(--text) 6%, var(--primary) 58%, var(--accent) 104%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.rad-tagline { color: var(--text-muted); font-size: 15px; margin-top: 7px; max-width: 60ch; }
.rad-section-title { font-family: var(--font-mono); font-size: 11px; font-weight: 600; letter-spacing: 0.10em;
  text-transform: uppercase; color: var(--text-faint); }
.rad-label { display: block; font-size: 13px; font-weight: 600; color: var(--text-muted); margin-bottom: 7px; }
.rad-hint { font-weight: 400; color: var(--text-faint); }
.rad-mono { font-family: var(--font-mono); }

/* ---------- header ---------- */
.rad-header { display: flex; align-items: flex-start; gap: 15px; padding: 36px 0 24px; }
.rad-logo {
  width: 44px; height: 44px; border-radius: var(--r-md); flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 22px; color: #fff;
  box-shadow: var(--glow-primary);
}
.rad-header-toggle { margin-left: auto; }

/* ---------- theme toggle ---------- */
.rad-toggle {
  width: 38px; height: 38px; border-radius: 999px; cursor: pointer;
  background: var(--surface-glass); border: 1px solid var(--border-glass); color: var(--text-muted);
  display: inline-flex; align-items: center; justify-content: center;
  -webkit-backdrop-filter: var(--blur-glass); backdrop-filter: var(--blur-glass);
  transition: border-color .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
}
.rad-toggle:hover { border-color: var(--border-bright); color: var(--text); transform: translateY(-1px); }
.rad-toggle svg { width: 18px; height: 18px; }

/* ---------- glass card ---------- */
.rad-card {
  background: var(--surface-glass);
  -webkit-backdrop-filter: var(--blur-glass); backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border-glass); border-radius: var(--r-lg);
  padding: 26px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), var(--shadow-sm);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease), transform .25s var(--ease);
}
.rad-card + .rad-card { margin-top: 18px; }
.rad-card.solid { background: var(--surface-solid); -webkit-backdrop-filter: none; backdrop-filter: none; }
.rad-card.inset { background: var(--surface-strong); box-shadow: none; }

/* ---------- buttons ---------- */
.rad-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-body); font-size: 15px; font-weight: 600; line-height: 1;
  padding: 12px 22px; border-radius: 999px; border: 1px solid transparent; cursor: pointer;
  color: var(--text); background: var(--surface-strong);
  transition: transform .18s var(--ease), box-shadow .22s var(--ease), border-color .2s var(--ease), background .2s var(--ease), opacity .2s var(--ease);
}
.rad-btn:hover:not(:disabled) { transform: translateY(-1px); }
.rad-btn:active:not(:disabled) { transform: translateY(0); }
.rad-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }
.rad-btn svg { width: 16px; height: 16px; }

/* the single glow CTA - one per view */
.rad-btn.cta {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-color: rgba(255,255,255,0.14); color: #fff; box-shadow: var(--glow-primary);
}
.rad-btn.cta:hover:not(:disabled) { box-shadow: var(--glow-accent); transform: translateY(-1px); }

.rad-btn.ghost { background: transparent; border-color: var(--border-glass); color: var(--text-muted); font-weight: 500; }
.rad-btn.ghost:hover:not(:disabled) { border-color: var(--border-bright); color: var(--text); }
.rad-btn.danger:hover:not(:disabled) { border-color: color-mix(in srgb, var(--err) 60%, transparent); color: var(--err); }
.rad-btn.sm { padding: 8px 15px; font-size: 13.5px; }

/* icon button */
.rad-icon-btn {
  display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
  font-family: var(--font-body); font-size: 13px; font-weight: 500; color: var(--text-muted);
  background: transparent; border: 1px solid var(--border-glass); border-radius: var(--r-sm); padding: 8px 13px;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}
.rad-icon-btn:hover:not(:disabled) { border-color: var(--border-bright); color: var(--text); }
.rad-icon-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.rad-icon-btn.good { border-color: color-mix(in srgb, var(--ok) 55%, transparent); color: var(--ok); }
.rad-icon-btn svg { width: 15px; height: 15px; }

/* ---------- forms ---------- */
.rad-field { margin-bottom: 17px; }
.rad-field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 620px) { .rad-field-grid { grid-template-columns: 1fr; } }

.rad-input, input.rad-input, textarea.rad-input, select.rad-input {
  width: 100%; font-family: var(--font-body); font-size: 15px; color: var(--text);
  background: color-mix(in srgb, var(--bg) 55%, transparent);
  border: 1px solid var(--border-glass); border-radius: var(--r-sm); padding: 11px 14px;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease);
}
html[data-theme="light"] .rad-input { background: #fff; }
.rad-input::placeholder { color: var(--text-faint); }
textarea.rad-input { resize: vertical; min-height: 78px; line-height: 1.55; }
select.rad-input { appearance: none; cursor: pointer; padding-right: 38px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a855f7' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; }
select.rad-input option { background: var(--bg-elevated); color: var(--text); }

.rad-input:focus, :focus-visible {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 22%, transparent);
}

/* segmented control */
.rad-seg { display: flex; gap: 5px; background: color-mix(in srgb, var(--bg) 50%, transparent);
  border: 1px solid var(--border-glass); border-radius: var(--r-sm); padding: 4px; }
.rad-seg button { flex: 1; background: transparent; border: none; cursor: pointer;
  font-family: var(--font-body); font-size: 13px; font-weight: 600; color: var(--text-muted);
  padding: 9px 10px; border-radius: 6px; transition: background .2s var(--ease), color .2s var(--ease); }
.rad-seg button.on { background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; }

/* checkbox */
.rad-check { display: flex; align-items: center; gap: 10px; cursor: pointer; user-select: none; }
.rad-check input { width: 18px; height: 18px; accent-color: var(--primary); cursor: pointer; flex-shrink: 0; }
.rad-check span { font-size: 14px; color: var(--text-muted); }

/* ---------- badges / pills / chips ---------- */
.rad-badge { display: inline-flex; align-items: center; gap: 5px; font-family: var(--font-mono);
  font-size: 10.5px; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
  padding: 3px 9px; border-radius: var(--r-sm); }
.rad-chip { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 500;
  padding: 5px 12px; border-radius: 999px; color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--primary) 30%, transparent); }
.rad-chip.click { cursor: pointer; transition: border-color .2s var(--ease), color .2s var(--ease); }
.rad-chip.click:hover { border-color: var(--border-bright); color: var(--text); }
.rad-chip.on { background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; border-color: transparent; }

/* signal pill: yellow lives on dark surfaces only, so it always carries its own dark chip */
.rad-pill-signal { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-mono);
  font-size: 11px; font-weight: 600; padding: 4px 10px; border-radius: 999px;
  background: #17120a; color: var(--signal); border: 1px solid color-mix(in srgb, var(--signal) 40%, transparent); }

/* semantic badge tints */
.rad-badge.t-primary { background: color-mix(in srgb, var(--primary) 15%, transparent); color: var(--primary); border: 1px solid color-mix(in srgb, var(--primary) 32%, transparent); }
.rad-badge.t-ok    { background: color-mix(in srgb, var(--ok) 15%, transparent);    color: var(--ok);    border: 1px solid color-mix(in srgb, var(--ok) 32%, transparent); }
.rad-badge.t-warn  { background: color-mix(in srgb, var(--warn) 15%, transparent);  color: var(--warn);  border: 1px solid color-mix(in srgb, var(--warn) 32%, transparent); }
.rad-badge.t-err   { background: color-mix(in srgb, var(--err) 15%, transparent);   color: var(--err);   border: 1px solid color-mix(in srgb, var(--err) 32%, transparent); }
.rad-badge.t-info  { background: color-mix(in srgb, var(--info) 15%, transparent);  color: var(--info);  border: 1px solid color-mix(in srgb, var(--info) 32%, transparent); }
.rad-badge.t-teal  { background: color-mix(in srgb, var(--teal) 15%, transparent);  color: var(--teal);  border: 1px solid color-mix(in srgb, var(--teal) 32%, transparent); }
.rad-badge.t-rose  { background: color-mix(in srgb, var(--rose) 15%, transparent);  color: var(--rose);  border: 1px solid color-mix(in srgb, var(--rose) 32%, transparent); }
.rad-badge.t-muted { background: color-mix(in srgb, var(--text) 8%, transparent);   color: var(--text-faint); border: 1px solid var(--border-glass); }

/* ---------- links ---------- */
.rad-link { color: var(--primary); cursor: pointer; font-weight: 500; text-decoration: none;
  background: none; border: none; font-family: inherit; font-size: inherit; padding: 0; }
.rad-link:hover { text-decoration: underline; color: var(--accent); }
a.rad-a { color: var(--primary); text-decoration: none; }
a.rad-a:hover { text-decoration: underline; }

/* ---------- spinner + skeleton ---------- */
.rad-spinner { width: 17px; height: 17px; border: 2px solid color-mix(in srgb, var(--text) 25%, transparent);
  border-top-color: currentColor; border-radius: 50%; animation: rad-spin .7s linear infinite; display: inline-block; flex-shrink: 0; }
@keyframes rad-spin { to { transform: rotate(360deg); } }

.rad-skel { border-radius: var(--r-sm); background:
    linear-gradient(100deg, color-mix(in srgb, var(--text) 6%, transparent) 30%,
                            color-mix(in srgb, var(--text) 14%, transparent) 50%,
                            color-mix(in srgb, var(--text) 6%, transparent) 70%);
  background-size: 220% 100%; animation: rad-shimmer 1.4s ease-in-out infinite; }
@keyframes rad-shimmer { 0% { background-position: 100% 0; } 100% { background-position: -120% 0; } }
.rad-skel-line { height: 13px; margin-bottom: 10px; }
.rad-skel-line.w80 { width: 80%; } .rad-skel-line.w60 { width: 60%; } .rad-skel-line.w40 { width: 40%; }

/* ---------- steps / stepper ---------- */
.rad-steps { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; margin: 2px 0 22px;
  font-family: var(--font-mono); font-size: 12px; font-weight: 500; color: var(--text-faint); }
.rad-step { display: flex; align-items: center; gap: 8px; opacity: 0.5; transition: opacity .3s var(--ease), color .3s var(--ease); }
.rad-step.active { opacity: 1; color: var(--text); }
.rad-step.done { opacity: 1; color: var(--ok); }
.rad-step .n { width: 21px; height: 21px; border-radius: 50%; border: 1.5px solid var(--border-bright);
  display: inline-flex; align-items: center; justify-content: center; font-size: 11px; }
.rad-step.active .n { border-color: var(--primary); background: color-mix(in srgb, var(--primary) 20%, transparent); color: var(--text); }
.rad-step.done .n { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 18%, transparent); color: var(--ok); }
.rad-step-sep { width: 18px; height: 1.5px; background: var(--border-glass); }

/* ---------- toast ---------- */
.rad-toasts { position: fixed; right: 20px; bottom: 20px; z-index: 10000; display: flex; flex-direction: column; gap: 10px; }
.rad-toast { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-radius: var(--r-md);
  background: var(--bg-elevated); border: 1px solid var(--border-bright); color: var(--text);
  box-shadow: var(--shadow); font-size: 14px; max-width: 360px;
  animation: rad-toast-in .35s var(--ease); }
.rad-toast.err { border-color: color-mix(in srgb, var(--err) 55%, transparent); }
.rad-toast.err svg { color: var(--err); } .rad-toast.ok svg { color: var(--ok); }
.rad-toast svg { width: 17px; height: 17px; flex-shrink: 0; }
@keyframes rad-toast-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ---------- motion utilities ---------- */
.reveal > * { opacity: 0; transform: translateY(12px); animation: rad-rise .7s var(--ease) forwards; }
.reveal > *:nth-child(1) { animation-delay: .05s; }
.reveal > *:nth-child(2) { animation-delay: .12s; }
.reveal > *:nth-child(3) { animation-delay: .19s; }
.reveal > *:nth-child(4) { animation-delay: .26s; }
.reveal > *:nth-child(5) { animation-delay: .33s; }
.reveal > *:nth-child(6) { animation-delay: .40s; }
@keyframes rad-rise { to { opacity: 1; transform: none; } }

.rad-in { animation: rad-rise .55s var(--ease); }

.tiltable { transition: transform .32s var(--ease), border-color .22s var(--ease), box-shadow .25s var(--ease); }
.tiltable:hover { transform: translateY(-3px); border-color: var(--border-bright); box-shadow: var(--shadow); }

@keyframes rad-pulse { 0%,100% { box-shadow: var(--glow-primary); } 50% { box-shadow: 0 0 52px rgba(168,85,247,0.7); } }
.pulse { animation: rad-pulse 2.4s var(--ease) infinite; }

@keyframes rad-dot-pulse { 0%,100% { opacity: .4; } 50% { opacity: 1; } }
.rad-livedot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); animation: rad-dot-pulse 1.2s ease-in-out infinite; flex-shrink: 0; }
.rad-livedot.done { background: var(--ok); animation: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
  .reveal > * { opacity: 1; transform: none; }
  .rad-orb { animation: none; }
}

/* ---------- footer ---------- */
.rad-footer { text-align: center; color: var(--text-faint); font-size: 12px; margin-top: 34px; font-family: var(--font-mono); letter-spacing: 0.04em; }