/* ==========================================================================
   M-Penny — "Kinetic Copper" design system
   Exact tokens exported from the Stitch project (M-Penny Financial OS).
   Material-3 tonal palette anchored on Copper #b45a2b, Gold #cfa243 accent.
   Type: Hanken Grotesk (display/body) + JetBrains Mono (labels/numerics).
   Engineered for Kenyan MSMEs: extreme legibility, AA contrast, 44px taps.
   ========================================================================== */

:root {
  /* ── Brand anchors ── */
  --kc-copper: #b45a2b;          /* brand copper (primary container) */
  --kc-copper-deep: #954215;     /* primary (text-on-light, hover) */
  --kc-copper-tint: #994618;     /* surface tint */
  --kc-gold: #cfa243;            /* aspirational accent — growth/milestones */

  /* ── Material-3 tonal roles (light) ── */
  --kc-primary: #954215;
  --kc-on-primary: #ffffff;
  --kc-primary-container: #b45a2b;
  --kc-on-primary-container: #fff9f8;
  --kc-primary-fixed: #ffdbcc;
  --kc-primary-fixed-dim: #ffb694;
  --kc-on-primary-fixed: #351000;
  --kc-on-primary-fixed-variant: #7b2f01;
  --kc-inverse-primary: #ffb694;

  --kc-secondary: #7a5900;
  --kc-on-secondary: #ffffff;
  --kc-secondary-container: #ffcd69;
  --kc-on-secondary-container: #775600;
  --kc-secondary-fixed: #ffdea3;
  --kc-secondary-fixed-dim: #f0bf5d;

  --kc-tertiary: #3b6350;        /* forest green — success/positive */
  --kc-on-tertiary: #ffffff;
  --kc-tertiary-container: #547c68;
  --kc-on-tertiary-container: #eefff3;
  --kc-tertiary-fixed: #c1ecd4;

  --kc-error: #ba1a1a;
  --kc-on-error: #ffffff;
  --kc-error-container: #ffdad6;
  --kc-on-error-container: #93000a;

  /* ── Surfaces & text ── */
  --kc-background: #fbf8ff;
  --kc-on-background: #1b1b21;
  --kc-surface: #fbf8ff;
  --kc-surface-bright: #fbf8ff;
  --kc-surface-dim: #dbd9e2;
  --kc-surface-container-lowest: #ffffff;
  --kc-surface-container-low: #f5f2fb;
  --kc-surface-container: #efedf6;
  --kc-surface-container-high: #e9e7f0;
  --kc-surface-container-highest: #e3e1ea;
  --kc-on-surface: #1b1b21;
  --kc-on-surface-variant: #55433b;
  --kc-inverse-surface: #303037;
  --kc-inverse-on-surface: #f2eff8;
  --kc-outline: #887269;
  --kc-outline-variant: #dbc1b6;
  --kc-surface-variant: #e3e1ea;

  /* Hairline border used across cards/inputs (per Elevation guidance). */
  --kc-hairline: #dbc1b6;

  /* ── Type families ── */
  --kc-font-display: 'Hanken Grotesk', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --kc-font-body: 'Hanken Grotesk', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --kc-font-label: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* ── Roundness (ROUND_FOUR base) ── */
  --kc-r-sm: 0.125rem;
  --kc-r: 0.25rem;
  --kc-r-md: 0.375rem;
  --kc-r-lg: 0.5rem;
  --kc-r-xl: 0.75rem;
  --kc-r-2xl: 1rem;
  --kc-r-full: 9999px;

  /* ── Spacing (8pt grid) ── */
  --kc-base: 4px;
  --kc-tap: 44px;             /* strict minimum tap target */
  --kc-gutter: 16px;
  --kc-margin-mobile: 16px;
  --kc-margin-desktop: 32px;
  --kc-stack-sm: 8px;
  --kc-stack-md: 16px;
  --kc-stack-lg: 24px;

  /* Single allowed focus shadow (primary action only). */
  --kc-shadow-action: 0 4px 12px rgba(149, 66, 21, 0.22);
}

/* ── Typography scale (exact) ───────────────────────────────────────────── */
.kc-headline-lg {
  font-family: var(--kc-font-display); font-size: 32px; font-weight: 700;
  line-height: 40px; letter-spacing: -0.02em;
}
@media (max-width: 640px) {
  .kc-headline-lg { font-size: 26px; line-height: 32px; }
}
.kc-headline-md {
  font-family: var(--kc-font-display); font-size: 20px; font-weight: 600; line-height: 28px;
}
.kc-body-lg { font-family: var(--kc-font-body); font-size: 18px; font-weight: 400; line-height: 26px; }
.kc-body-md { font-family: var(--kc-font-body); font-size: 16px; font-weight: 400; line-height: 24px; }
.kc-label-md {
  font-family: var(--kc-font-label); font-size: 14px; font-weight: 500;
  line-height: 20px; letter-spacing: 0.02em;
}
.kc-label-sm {
  font-family: var(--kc-font-label); font-size: 12px; font-weight: 500;
  line-height: 16px; letter-spacing: 0.02em;
}
.kc-numeric {
  font-family: var(--kc-font-display); font-size: 24px; font-weight: 700; line-height: 30px;
  font-variant-numeric: tabular-nums;
}

/* ── Components ──────────────────────────────────────────────────────────
   Buttons: 48px height, copper fill / copper outline.
   Inputs: persistent labels, hairline border → copper on focus.
   Cards: white surface, 1px hairline, no heavy shadow.
   Badge: gold pill = "M-Penny Verified".  Chip: low-saturation status filter.
   Txn row: 72px, mono amount/timestamp, Hanken recipient.
   ----------------------------------------------------------------------- */
.kc-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 22px; border: 0; cursor: pointer;
  border-radius: var(--kc-r-lg);
  background: var(--kc-copper); color: var(--kc-on-primary);
  font-family: var(--kc-font-display); font-size: 16px; font-weight: 600;
  box-shadow: var(--kc-shadow-action);
  transition: background .15s ease, transform .05s ease;
}
.kc-btn:hover { background: var(--kc-copper-deep); }
.kc-btn:active { transform: translateY(1px); }
.kc-btn:focus-visible { outline: 3px solid var(--kc-primary-fixed-dim); outline-offset: 2px; }

.kc-btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 22px; cursor: pointer;
  border-radius: var(--kc-r-lg);
  background: transparent; color: var(--kc-copper-deep);
  border: 1.5px solid var(--kc-copper);
  font-family: var(--kc-font-display); font-size: 16px; font-weight: 600;
  transition: background .15s ease;
}
.kc-btn-secondary:hover { background: var(--kc-primary-fixed); }
.kc-btn-secondary:focus-visible { outline: 3px solid var(--kc-primary-fixed-dim); outline-offset: 2px; }

.kc-field { display: flex; flex-direction: column; gap: 6px; }
.kc-label {
  font-family: var(--kc-font-label); font-size: 12px; font-weight: 500;
  letter-spacing: 0.02em; color: var(--kc-on-surface-variant); text-transform: none;
}
.kc-input {
  min-height: var(--kc-tap); padding: 11px 14px; width: 100%;
  border: 1.5px solid var(--kc-outline-variant); border-radius: var(--kc-r-lg);
  background: var(--kc-surface-container-lowest); color: var(--kc-on-surface);
  font-family: var(--kc-font-body); font-size: 16px; line-height: 24px;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.kc-input::placeholder { color: var(--kc-outline); }
.kc-input:focus {
  outline: none; border-color: var(--kc-copper);
  box-shadow: 0 0 0 3px rgba(180, 90, 43, 0.16);
}

.kc-card {
  background: var(--kc-surface-container-lowest);
  border: 1px solid var(--kc-hairline); border-radius: var(--kc-r-xl);
  padding: 20px;
}
.kc-card-total { /* numeric total, top-right of a card */
  font-family: var(--kc-font-display); font-size: 24px; font-weight: 700;
  line-height: 30px; font-variant-numeric: tabular-nums; color: var(--kc-on-surface);
}

.kc-badge { /* gold "Verified" stamp */
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: var(--kc-r-full);
  background: var(--kc-gold); color: #2c1d00;
  font-family: var(--kc-font-label); font-size: 12px; font-weight: 600; letter-spacing: .02em;
}

.kc-chip {
  display: inline-flex; align-items: center; gap: 6px;
  min-height: 32px; padding: 0 12px; border-radius: var(--kc-r-full);
  font-family: var(--kc-font-label); font-size: 12px; font-weight: 500;
  border: 1px solid var(--kc-outline-variant); background: var(--kc-surface-container);
  color: var(--kc-on-surface-variant);
}
.kc-chip--paid { background: var(--kc-tertiary-fixed); color: var(--kc-on-tertiary-fixed-variant, #274e3d); border-color: transparent; }
.kc-chip--pending { background: var(--kc-secondary-fixed); color: var(--kc-on-secondary-container); border-color: transparent; }
.kc-chip--error { background: var(--kc-error-container); color: var(--kc-on-error-container); border-color: transparent; }

.kc-txn-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  min-height: 72px; padding: 12px 0; border-bottom: 1px solid var(--kc-surface-container-high);
}
.kc-txn-name { font-family: var(--kc-font-body); font-size: 16px; font-weight: 500; color: var(--kc-on-surface); }
.kc-txn-amt { font-family: var(--kc-font-label); font-size: 15px; font-weight: 600; font-variant-numeric: tabular-nums; }
.kc-txn-time { font-family: var(--kc-font-label); font-size: 12px; color: var(--kc-on-surface-variant); }

/* ── Helpers ── */
.kc-pos { color: var(--kc-tertiary); }
.kc-neg { color: var(--kc-error); }
.kc-surface { background: var(--kc-surface); color: var(--kc-on-surface); }