/* ============================================================
   Potiva Design System (potiva-ds.css)
   The single source of visual truth for the Potiva app suite.
   Encodes CLAUDE-CODE-UI-RULES: fixed spacing + type scales, a named
   palette with AA-safe neutrals + semantic colours, a 44px minimum on
   every control, and base component + state patterns.

   Per-app usage: <link rel="stylesheet" href="/assets/potiva-ds.css">
   then set the app's accent once:  :root { --ds-primary: #E8641B; }
   Everything else (scales, components, states) is shared and identical.

   Compatibility: no color-mix()/oklch() — safe on older Android WebViews.
   ============================================================ */
:root {
  /* -- Spacing scale (the ONLY allowed spacing values) -- */
  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px;
  --sp-6: 24px; --sp-8: 32px; --sp-12: 48px; --sp-16: 64px;

  /* -- Type scale (body >= 16px on mobile) -- */
  --ts-xs: 12px; --ts-sm: 14px; --ts-md: 16px; --ts-lg: 20px; --ts-xl: 24px; --ts-2xl: 32px;
  --lh-body: 1.5; --lh-tight: 1.25;

  /* -- Radius -- */
  --r-sm: 8px; --r-md: 12px; --r-lg: 16px; --r-pill: 999px;

  /* -- Minimum touch target -- */
  --tap: 44px;

  /* -- Neutrals (contrast on white, AA verified) -- */
  --ink:       #14213A; /* primary text   ~13:1 */
  --ink-soft:  #445068; /* secondary text ~7.3:1 */
  --ink-muted: #556074; /* muted, still AA ~5.6:1 (use instead of light greys) */
  --line:      #E2E8F0;
  --surface:   #FFFFFF;
  --surface-2: #F4F7FA;
  --backdrop:  rgba(15, 23, 42, 0.5);

  /* -- Semantic (text colours pass AA on their -bg) -- */
  --success: #0E7C43; --success-bg: #E7F5EC;
  --warning: #9A5B00; --warning-bg: #FBF1E3;
  --danger:  #B4241B; --danger-bg:  #FBE9E7;

  /* -- Brand primary — OVERRIDE per app; default = Potiva blue -- */
  --ds-primary:     #2563EB;
  --ds-primary-ink: #FFFFFF;  /* text/icon on the primary; set dark if primary is light */
  --ds-primary-weak:#EAF0FE;  /* tint for hovers/soft fills; set per app */

  --ds-font: "Segoe UI", Roboto, system-ui, -apple-system, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

/* -- Buttons: >=44px, always give feedback -- */
.ds-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  min-height: var(--tap); padding: 0 var(--sp-4);
  border-radius: var(--r-pill); border: 1.5px solid transparent;
  font: 600 var(--ts-md) / 1 var(--ds-font); cursor: pointer; text-decoration: none;
  transition: transform .12s ease, opacity .12s ease, background .12s ease;
  -webkit-tap-highlight-color: transparent;
}
.ds-btn:active { transform: scale(.98); }
.ds-btn:focus-visible { outline: 2px solid var(--ds-primary); outline-offset: 2px; }
.ds-btn:disabled { opacity: .5; cursor: not-allowed; }
.ds-btn-primary { background: var(--ds-primary); color: var(--ds-primary-ink); }
.ds-btn-ghost   { background: transparent; color: var(--ds-primary); border-color: var(--line); }
.ds-btn-danger  { background: var(--danger); color: #fff; }
.ds-btn-block   { display: flex; width: 100%; }

/* Icon-only controls still meet the 44px target. */
.ds-iconbtn {
  width: var(--tap); height: var(--tap); flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  border: 0; background: transparent; border-radius: var(--r-md); cursor: pointer; color: inherit;
}
.ds-iconbtn:active { transform: scale(.94); }

/* -- Card -- */
.ds-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: var(--sp-4); }
.ds-card + .ds-card { margin-top: var(--sp-3); }

/* -- Field (label + control). Every input gets a visible label. -- */
.ds-field { display: block; margin-bottom: var(--sp-4); }
.ds-field > span, .ds-label { display: block; font: 600 var(--ts-sm) / 1.3 var(--ds-font); color: var(--ink); margin-bottom: var(--sp-2); }
.ds-input,
.ds-field input, .ds-field select, .ds-field textarea {
  width: 100%; min-height: var(--tap); box-sizing: border-box;
  border: 1.5px solid var(--line); border-radius: var(--r-md);
  padding: 0 var(--sp-3); background: var(--surface); color: var(--ink);
  font: 400 var(--ts-md) / 1.4 var(--ds-font);
}
.ds-field textarea { padding: var(--sp-3); min-height: 84px; }
.ds-input:focus,
.ds-field input:focus, .ds-field select:focus, .ds-field textarea:focus {
  outline: 2px solid var(--ds-primary); outline-offset: 1px; border-color: var(--ds-primary);
}

/* -- Badges (colour is never the only signal — always has a label) -- */
.ds-badge { display: inline-flex; align-items: center; gap: var(--sp-1); font: 700 var(--ts-xs) / 1 var(--ds-font); padding: var(--sp-1) var(--sp-2); border-radius: var(--r-pill); background: var(--surface-2); color: var(--ink-soft); }
.ds-badge-success { background: var(--success-bg); color: var(--success); }
.ds-badge-warning { background: var(--warning-bg); color: var(--warning); }
.ds-badge-danger  { background: var(--danger-bg);  color: var(--danger); }

/* -- The four states (§1: loading/empty/error/success all handled) -- */
.ds-state { text-align: center; padding: var(--sp-8) var(--sp-4); }
.ds-state svg { width: 40px; height: 40px; color: var(--ink-muted); margin-bottom: var(--sp-3); }
.ds-state h3 { font: 700 var(--ts-lg) / 1.3 var(--ds-font); color: var(--ink); margin: 0 0 var(--sp-2); }
.ds-state p  { font: 400 var(--ts-md) / 1.5 var(--ds-font); color: var(--ink-soft); margin: 0 0 var(--sp-4); }
.ds-spinner {
  width: 28px; height: 28px; border-radius: 50%;
  border: 3px solid var(--line); border-top-color: var(--ds-primary);
  margin: 0 auto var(--sp-3); animation: ds-spin .8s linear infinite;
}
.ds-error-msg { background: var(--danger-bg); color: var(--danger); border-radius: var(--r-md); padding: var(--sp-3); font: 500 var(--ts-sm) / 1.4 var(--ds-font); }

@keyframes ds-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .ds-btn, .ds-iconbtn { transition: none; }
  .ds-spinner { animation: none; }
}

/* -- Utilities (spacing helpers, all from the scale) -- */
.ds-mt-2 { margin-top: var(--sp-2); } .ds-mt-3 { margin-top: var(--sp-3); } .ds-mt-4 { margin-top: var(--sp-4); }
.ds-mb-2 { margin-bottom: var(--sp-2); } .ds-mb-3 { margin-bottom: var(--sp-3); } .ds-mb-4 { margin-bottom: var(--sp-4); }
.ds-muted { color: var(--ink-muted); }
.ds-row { display: flex; align-items: center; gap: var(--sp-2); flex-wrap: wrap; }

/* -- Shared mini-charts (used with /assets/potiva-charts.js) -- */
.pc-spark { width: 100%; height: 34px; display: block; }
.pc-ring { display: block; }
.pc-ring-wrap { position: relative; display: inline-flex; flex: none; }
.pc-ring-wrap .pc-ring-t { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 13px; color: var(--ink); font-variant-numeric: tabular-nums; }
.pc-track { height: 8px; background: var(--surface-2); border-radius: var(--r-pill); overflow: hidden; }
.pc-track > i { display: block; height: 100%; border-radius: var(--r-pill); }
.pc-stack { display: flex; }
.pc-stack > i { height: 100%; border-radius: 0; }
.pc-dots { display: flex; gap: 5px; }
.pc-dots span { width: 15px; height: 15px; border-radius: 5px; background: var(--surface-2); }
.pc-dots span.on { background: var(--ds-primary); }
.pc-dots span.today { outline: 2px solid var(--ds-primary); outline-offset: 1px; }

/* ---- Shared auth: "granted Premium" banner + password strength meter ---- */
.pa-premium { display:flex; align-items:center; gap:10px; padding:12px 14px; border-radius:var(--r-lg,14px);
  background:var(--surface-2,#F4F7FA); border:1px solid var(--ds-primary); color:var(--ink,#14213A); margin:10px 0; }
.pa-premium-ico { flex:0 0 auto; width:28px; height:28px; border-radius:50%; display:inline-flex; align-items:center;
  justify-content:center; background:var(--ds-primary); color:var(--ds-primary-ink,#fff); font-size:15px; }
.pa-premium-txt { font-size:13.5px; line-height:1.35; }
.pa-strength { display:flex; gap:4px; margin-top:6px; }
.pa-strength i { height:4px; flex:1; border-radius:var(--r-pill,999px); background:var(--line,#E2E8F0); }
.pa-strength.s1 i:nth-child(1){background:var(--danger,#c0392b)}
.pa-strength.s2 i:nth-child(-n+2){background:var(--warning,#B9770E)}
.pa-strength.s3 i{background:var(--success,#1E8449)}
.pa-hint { font-size:12px; color:var(--ink-muted,#556074); margin-top:4px; }
.pa-hint.err { color:var(--danger,#c0392b); }

/* Installed-app (TWA/PWA) polish: hide the "all Potiva apps" launcher link when
   running standalone — tapping it would navigate outside the app's scope and pop
   open a browser tab with a URL bar. On the web (display-mode: browser) it stays. */
@media (display-mode: standalone) { .pf-apps { display: none !important; } }