/* ============================================================
   Authentic Accounting — Design System Tokens
   colors_and_type.css
   ============================================================
   Palette is logo-derived only. No external accent colors.
   Typography uses Google Fonts substitutes for the brand
   wordmark font (Antique Olive Bold Condensed, URW) which is
   not redistributable. See README.md → Typography.
   ============================================================ */

/* --- Google Font imports (substitutes) --- */
@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@500;600;700&family=Archivo:wght@400;500;600;700;800&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  /* ==========================================================
     COLOR — LOGO DERIVED
     ========================================================== */

  /* Brand primaries */
  --aa-cyan:            #29ABE2;  /* Primary accent, wordmark, links, key data */
  --aa-cyan-600:        #1F8BBA;  /* Hover / pressed on cyan */
  --aa-cyan-700:        #176E93;  /* Deep cyan, emphasis on light */
  --aa-cyan-200:        #9BD8F0;  /* Decorative tints only (charts, highlights) */
  --aa-cyan-100:        #D6EEF9;  /* Soft cyan wash */
  --aa-cyan-050:        #ECF7FC;  /* Faintest cyan wash, table header bg */

  --aa-steel:           #6D6E71;  /* Body text, secondary, rule lines */
  --aa-steel-700:       #525358;
  --aa-steel-300:       #A7A8AB;
  --aa-steel-200:       #C7C8CA;
  --aa-steel-100:       #E4E5E7;  /* Dividers */

  --aa-charcoal:        #1A1A2E;  /* Primary headings, institutional surfaces */
  --aa-charcoal-800:    #242438;
  --aa-charcoal-600:    #3A3A4F;

  /* Surfaces (light, always preferred) */
  --aa-surface:         #FFFFFF;  /* Primary canvas */
  --aa-surface-off:     #FAFAFB;  /* Off-white page bg */
  --aa-surface-neutral: #F4F4F6;  /* Zebra stripe / disabled bg */
  --aa-surface-raised:  #FFFFFF;  /* Cards, tiles */
  --aa-rule:            #E4E5E7;  /* Rule lines, thin dividers */
  --aa-rule-strong:     #C7C8CA;  /* Stronger divider for tables */

  /* Data / status (derived only from palette) */
  --aa-data-primary:    var(--aa-cyan);
  --aa-data-secondary:  var(--aa-steel);
  --aa-data-reference:  var(--aa-charcoal);
  --aa-data-series-3:   var(--aa-cyan-700);
  --aa-data-series-4:   var(--aa-steel-300);

  /* Semantic — muted, control-oriented. NOT marketing colors */
  --aa-positive:        #1F7A5A;   /* Reserved for reconciled / passed */
  --aa-negative:        #A1331B;   /* Reserved for variance / failed */
  --aa-caution:         #8A6D1F;   /* Reserved for review / pending */

  /* ==========================================================
     TYPOGRAPHY
     ========================================================== */

  /* Families */
  --aa-font-display:    'Oswald', 'Archivo', 'Antique Olive', 'Helvetica Neue Condensed', sans-serif;
  --aa-font-display-alt:'Archivo', 'Helvetica Neue', sans-serif;
  --aa-font-sans:       'Inter', 'Helvetica Neue', Arial, sans-serif;
  --aa-font-mono:       'IBM Plex Mono', 'SF Mono', Menlo, Consolas, monospace;

  /* Weights */
  --aa-w-regular: 400;
  --aa-w-medium:  500;
  --aa-w-semibold:600;
  --aa-w-bold:    700;
  --aa-w-display: 700;  /* Oswald top weight for display */

  /* Type scale (modular, 1.200 minor third — dense/institutional) */
  --aa-t-12: 12px;   /* footnotes (print: 8pt+) */
  --aa-t-13: 13px;   /* table cells, caption */
  --aa-t-14: 14px;   /* body small */
  --aa-t-15: 15px;   /* body default */
  --aa-t-17: 17px;   /* body large */
  --aa-t-20: 20px;   /* h5 / subhead */
  --aa-t-24: 24px;   /* h4 */
  --aa-t-30: 30px;   /* h3 */
  --aa-t-38: 38px;   /* h2 */
  --aa-t-48: 48px;   /* h1 */
  --aa-t-64: 64px;   /* display */
  --aa-t-88: 88px;   /* hero display (covers only) */

  /* Line heights */
  --aa-lh-tight:   1.1;
  --aa-lh-display: 1.05;
  --aa-lh-heading: 1.2;
  --aa-lh-body:    1.55;
  --aa-lh-dense:   1.35;

  /* Letter spacing */
  --aa-ls-wordmark:  0.04em;   /* Matches wordmark cadence */
  --aa-ls-display:   0.01em;
  --aa-ls-eyebrow:   0.14em;   /* Uppercase micro labels */
  --aa-ls-body:      0;
  --aa-ls-tabular:   0;

  /* ==========================================================
     SPACING — 4pt base
     ========================================================== */
  --aa-s-0:   0;
  --aa-s-1:   4px;
  --aa-s-2:   8px;
  --aa-s-3:   12px;
  --aa-s-4:   16px;
  --aa-s-5:   20px;
  --aa-s-6:   24px;
  --aa-s-8:   32px;
  --aa-s-10:  40px;
  --aa-s-12:  48px;
  --aa-s-16:  64px;
  --aa-s-20:  80px;
  --aa-s-24:  96px;

  /* ==========================================================
     RADII — restrained. Tables + reports use 0.
     ========================================================== */
  --aa-r-0:  0;           /* Tables, statutory layouts, report chrome */
  --aa-r-1:  2px;         /* Inputs, tags */
  --aa-r-2:  4px;         /* Cards (professional-clean register) */
  --aa-r-3:  6px;         /* Tiles, dashboard cards */
  --aa-r-pill: 999px;     /* Status pills only */

  /* ==========================================================
     ELEVATION — minimal. Audit-clean. Use borders first.
     ========================================================== */
  --aa-elev-0: none;
  --aa-elev-1: 0 1px 0 rgba(26,26,46,0.04), 0 0 0 1px var(--aa-rule);   /* hairline card */
  --aa-elev-2: 0 1px 2px rgba(26,26,46,0.06), 0 0 0 1px var(--aa-rule); /* dashboard tile */
  --aa-elev-focus: 0 0 0 2px var(--aa-surface), 0 0 0 4px var(--aa-cyan);

  /* ==========================================================
     BORDERS
     ========================================================== */
  --aa-border-hair:   1px solid var(--aa-rule);
  --aa-border-rule:   1px solid var(--aa-rule-strong);
  --aa-border-heavy:  2px solid var(--aa-charcoal);
  --aa-border-accent: 2px solid var(--aa-cyan);

  /* ==========================================================
     LAYOUT
     ========================================================== */
  --aa-container:     1200px;
  --aa-container-wide:1360px;
  --aa-container-doc: 816px;      /* A4-ish report body */
  --aa-grid-gap:      var(--aa-s-6);
}

/* ============================================================
   SEMANTIC DEFAULTS
   ============================================================ */

html, body {
  background: var(--aa-surface-off);
  color: var(--aa-charcoal);
  font-family: var(--aa-font-sans);
  font-size: var(--aa-t-15);
  line-height: var(--aa-lh-body);
  font-feature-settings: 'ss01','cv11';
  -webkit-font-smoothing: antialiased;
}

h1, .aa-h1 {
  font-family: var(--aa-font-display);
  font-weight: var(--aa-w-display);
  font-size: var(--aa-t-48);
  line-height: var(--aa-lh-display);
  letter-spacing: var(--aa-ls-display);
  color: var(--aa-charcoal);
  text-transform: uppercase;
  margin: 0;
}
h2, .aa-h2 {
  font-family: var(--aa-font-display);
  font-weight: var(--aa-w-display);
  font-size: var(--aa-t-38);
  line-height: var(--aa-lh-heading);
  letter-spacing: var(--aa-ls-display);
  color: var(--aa-charcoal);
  text-transform: uppercase;
  margin: 0;
}
h3, .aa-h3 {
  font-family: var(--aa-font-display);
  font-weight: var(--aa-w-display);
  font-size: var(--aa-t-30);
  line-height: var(--aa-lh-heading);
  letter-spacing: var(--aa-ls-display);
  color: var(--aa-charcoal);
  text-transform: uppercase;
  margin: 0;
}
h4, .aa-h4 {
  font-family: var(--aa-font-sans);
  font-weight: var(--aa-w-semibold);
  font-size: var(--aa-t-20);
  line-height: var(--aa-lh-heading);
  color: var(--aa-charcoal);
  margin: 0;
}
h5, .aa-h5 {
  font-family: var(--aa-font-sans);
  font-weight: var(--aa-w-semibold);
  font-size: var(--aa-t-17);
  line-height: var(--aa-lh-heading);
  color: var(--aa-charcoal);
  margin: 0;
}

.aa-eyebrow {
  font-family: var(--aa-font-sans);
  font-weight: var(--aa-w-semibold);
  font-size: var(--aa-t-12);
  letter-spacing: var(--aa-ls-eyebrow);
  text-transform: uppercase;
  color: var(--aa-cyan);
}
.aa-eyebrow--steel { color: var(--aa-steel); }
.aa-eyebrow--charcoal { color: var(--aa-charcoal); }

.aa-wordmark {
  font-family: var(--aa-font-display);
  font-weight: var(--aa-w-display);
  text-transform: uppercase;
  letter-spacing: var(--aa-ls-wordmark);
  color: var(--aa-cyan);
}

p, .aa-p {
  font-size: var(--aa-t-15);
  line-height: var(--aa-lh-body);
  color: var(--aa-steel-700);
  margin: 0 0 var(--aa-s-4);
  text-wrap: pretty;
}
.aa-p--lead {
  font-size: var(--aa-t-17);
  color: var(--aa-charcoal-800);
}
.aa-p--small {
  font-size: var(--aa-t-14);
}
.aa-footnote {
  font-size: var(--aa-t-12);
  color: var(--aa-steel);
  line-height: var(--aa-lh-dense);
}

a {
  color: var(--aa-cyan-700);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
a:hover { color: var(--aa-cyan-600); }

code, .aa-mono, .aa-num {
  font-family: var(--aa-font-mono);
  font-variant-numeric: tabular-nums;
}

.aa-num, .aa-tabular {
  font-feature-settings: 'tnum' 1, 'lnum' 1;
  font-variant-numeric: tabular-nums lining-nums;
}

/* ============================================================
   UTILITY: Tables (first-class citizen)
   ============================================================ */
.aa-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--aa-t-14);
  font-variant-numeric: tabular-nums lining-nums;
}
.aa-table th {
  text-align: left;
  font-weight: var(--aa-w-semibold);
  font-size: var(--aa-t-12);
  letter-spacing: var(--aa-ls-eyebrow);
  text-transform: uppercase;
  color: var(--aa-steel);
  padding: var(--aa-s-3) var(--aa-s-4);
  border-bottom: var(--aa-border-heavy);
  background: var(--aa-surface);
}
.aa-table td {
  padding: var(--aa-s-3) var(--aa-s-4);
  border-bottom: var(--aa-border-hair);
  color: var(--aa-charcoal);
  vertical-align: top;
}
.aa-table td.aa-num,
.aa-table th.aa-num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.aa-table tr.aa-subtotal td {
  border-top: 1px solid var(--aa-steel-300);
  font-weight: var(--aa-w-semibold);
}
.aa-table tr.aa-total td {
  border-top: var(--aa-border-heavy);
  border-bottom: 3px double var(--aa-charcoal);
  font-weight: var(--aa-w-bold);
  color: var(--aa-charcoal);
}
.aa-table.aa-table--zebra tbody tr:nth-child(even) td {
  background: var(--aa-surface-neutral);
}

/* Negative numbers — parentheses pattern */
.aa-neg::before { content: '('; }
.aa-neg::after  { content: ')'; }
.aa-neg { color: var(--aa-negative); }

/* ============================================================
   REGISTERS — three deliverable tones
   ============================================================ */

/* Institutional: statutory, govt, enterprise */
.aa-register-institutional {
  --aa-bg: var(--aa-surface);
  --aa-radius: var(--aa-r-0);
  --aa-accent: var(--aa-charcoal);
  color: var(--aa-charcoal);
}

/* Transaction-grade: advisory, valuations, M&A */
.aa-register-transaction {
  --aa-bg: var(--aa-surface-off);
  --aa-radius: var(--aa-r-0);
  --aa-accent: var(--aa-charcoal);
}

/* Professional-clean: SME dashboards, onboarding, decks */
.aa-register-clean {
  --aa-bg: var(--aa-surface);
  --aa-radius: var(--aa-r-3);
  --aa-accent: var(--aa-cyan);
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}