/* ==========================================================================
   MCBIQ Design System — tokens (light theme) + components
   Source: Claude Design handoff "MCBIQ Design System Refresh"
   ========================================================================== */

:root {
  /* Neutrals — cool, low chroma */
  --color-gray-0: oklch(99% 0.002 255);
  --color-gray-50: oklch(97.5% 0.003 255);
  --color-gray-100: oklch(95% 0.005 255);
  --color-gray-200: oklch(91% 0.007 255);
  --color-gray-300: oklch(85% 0.009 255);
  --color-gray-400: oklch(68% 0.012 255);
  --color-gray-500: oklch(54% 0.014 255);
  --color-gray-600: oklch(44% 0.016 255);
  --color-gray-700: oklch(35% 0.016 255);
  --color-gray-800: oklch(25% 0.014 255);
  --color-gray-900: oklch(17% 0.012 255);
  --color-gray-950: oklch(11% 0.010 255);

  /* Primary — indigo-blue, hue 258 */
  --color-primary-50:  oklch(96% 0.020 258);
  --color-primary-100: oklch(91% 0.045 258);
  --color-primary-300: oklch(78% 0.090 258);
  --color-primary-500: oklch(62% 0.150 258);
  --color-primary-600: oklch(55% 0.160 258);
  --color-primary-700: oklch(47% 0.150 258);

  /* Semantic — same chroma/lightness curve, hue varies */
  --color-success-50: oklch(96% 0.025 150); --color-success-100: oklch(91% 0.060 150);
  --color-success-500: oklch(62% 0.140 150); --color-success-600: oklch(54% 0.140 150); --color-success-700: oklch(45% 0.130 150);

  --color-warning-50: oklch(96.5% 0.030 90); --color-warning-100: oklch(92% 0.070 88);
  --color-warning-500: oklch(75% 0.150 78); --color-warning-600: oklch(68% 0.150 70); --color-warning-700: oklch(52% 0.140 60);

  --color-danger-50: oklch(96% 0.020 25); --color-danger-100: oklch(91% 0.050 25);
  --color-danger-500: oklch(62% 0.190 25); --color-danger-600: oklch(55% 0.190 25); --color-danger-700: oklch(46% 0.180 25);

  --color-info-50: oklch(96% 0.020 220); --color-info-100: oklch(91% 0.045 220);
  --color-info-500: oklch(64% 0.110 220); --color-info-600: oklch(56% 0.120 220); --color-info-700: oklch(47% 0.110 220);

  --color-ai-50: oklch(96% 0.020 300); --color-ai-100: oklch(91% 0.045 300);
  --color-ai-600: oklch(56% 0.150 300); --color-ai-700: oklch(47% 0.140 300);

  /* Semantic aliases — light theme */
  --surface-canvas: var(--color-gray-50);
  --surface-card: var(--color-gray-0);
  --surface-secondary: var(--color-gray-100);
  --surface-inverse: var(--color-gray-900);
  --surface-sidebar: oklch(17% 0.020 258);
  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-600);
  --text-tertiary: var(--color-gray-500);
  --code-text: oklch(88% 0.006 255);
  --border-default: var(--color-gray-200);
  --border-strong: var(--color-gray-300);

  /* Typography */
  --font-sans: "Public Sans", -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --text-xs: 0.75rem;    /* 12px — badges, table meta */
  --text-sm: 0.8125rem;  /* 13px — table cells, nav */
  --text-base: 0.875rem; /* 14px — body default */
  --text-md: 1rem;       /* 16px — form inputs, emphasis */
  --text-lg: 1.125rem;   /* 18px — card / page-header titles */
  --text-xl: 1.375rem;   /* 22px — KPI numbers */
  --text-2xl: 1.75rem;   /* 28px — page hero title */

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing — 4px base grid */
  --space-0: 0; --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px;
  --space-5: 20px; --space-6: 24px; --space-7: 32px; --space-8: 40px; --space-9: 48px;

  --radius-sm: 4px; --radius-md: 6px; --radius-lg: 8px; --radius-full: 999px;

  --shadow-xs: 0 1px 2px oklch(0% 0 0 / 0.04);
  --shadow-sm: 0 1px 3px oklch(0% 0 0 / 0.07), 0 1px 2px oklch(0% 0 0 / 0.04);
  --shadow-md: 0 8px 20px oklch(0% 0 0 / 0.10), 0 2px 6px oklch(0% 0 0 / 0.05);
  --shadow-lg: 0 16px 40px oklch(0% 0 0 / 0.16);
  --focus-ring: 0 0 0 3px oklch(55% 0.16 258 / 0.25);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font-sans); background: var(--surface-canvas); color: var(--text-primary); font-size: var(--text-base); line-height: var(--leading-normal); }

.layout { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar { width: 232px; background: var(--surface-sidebar); color: #eee; display: flex; flex-direction: column; padding: 16px 0; gap: 0; flex-shrink: 0; }
.sidebar-brand { padding: 0 16px 16px; }
.sidebar-brand .brand-name { font-size: var(--text-md); font-weight: 700; color: #fff; display: block; }
.sidebar-brand .brand-org { font-size: var(--text-xs); color: oklch(70% 0.01 255 / 0.65); display: block; margin-top: 2px; }
.nav-groups { display: flex; flex-direction: column; gap: 18px; overflow-y: auto; padding-top: 4px; }
.nav-links { list-style: none; display: flex; flex-direction: column; gap: 2px; padding: 0 16px; }
.nav-link { display: flex; align-items: center; gap: 9px; padding: 7px 8px; color: oklch(85% 0.01 255); text-decoration: none; border-radius: var(--radius-md); font-size: var(--text-sm); font-weight: 500; border-left: 2px solid transparent; }
.nav-link svg { width: 15px; height: 15px; flex-shrink: 0; }
.nav-link:hover { background: oklch(100% 0 0 / 0.05); }
.nav-link.active { background: oklch(55% 0.16 258 / 0.18); color: #fff; border-left-color: var(--color-primary-500); }
.nav-section-title { font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: oklch(70% 0.01 255 / 0.55); padding: 0 8px; margin-bottom: 6px; }
.sidebar-footer { margin-top: auto; padding: 12px 16px 0; font-size: var(--text-xs); color: var(--text-tertiary); display: flex; flex-direction: column; gap: 4px; border-top: 1px solid oklch(100% 0 0 / 0.08); }
.sidebar-footer a { color: oklch(70% 0.01 255 / 0.8); text-decoration: none; }
.sidebar-footer a:hover { color: #fff; }

.main-content { flex: 1; padding: 2rem; overflow-y: auto; }

.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 0.75rem; }
.page-header h1 { font-size: var(--text-lg); font-weight: 600; letter-spacing: -0.01em; }
.page-header-meta { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; font-size: var(--text-sm); color: var(--text-secondary); }

.messages { margin-bottom: 1rem; display: flex; flex-direction: column; gap: 8px; }
.message { padding: 0.75rem 1rem; border-radius: var(--radius-md); font-size: var(--text-sm); }
.message--success { background: var(--color-success-100); color: var(--color-success-700); }
.message--error { background: var(--color-danger-100); color: var(--color-danger-700); }
.message--warning { background: var(--color-warning-100); color: var(--color-warning-700); border-left: 3px solid var(--color-warning-500); }
.message--info { background: var(--color-info-100); color: var(--color-info-700); border-left: 3px solid var(--color-info-500); }
.next-step-banner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }

.screen-help { display: flex; align-items: flex-start; gap: 8px; background: var(--color-info-100); color: var(--color-info-700); border-left: 3px solid var(--color-info-500); border-radius: var(--radius-md); padding: 0.75rem 1rem; margin-bottom: 1.25rem; font-size: var(--text-sm); }
.screen-help svg { width: 15px; height: 15px; flex-shrink: 0; margin-top: 2px; }
.screen-help-step { display: block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 4px; }
.screen-help p { margin: 0; }

/* Auth */
.auth-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--surface-canvas); font-family: var(--font-sans); }
.auth-container { width: 100%; max-width: 400px; padding: 2rem; }
.auth-card { background: var(--surface-card); border: 1px solid var(--border-default); border-radius: var(--radius-lg); padding: 2rem; box-shadow: var(--shadow-sm); }
.auth-title { font-size: var(--text-2xl); font-weight: 700; letter-spacing: -0.015em; margin-bottom: 0.25rem; color: var(--text-primary); }
.auth-subtitle { color: var(--text-secondary); margin-bottom: 1.5rem; }
.auth-form p { margin-bottom: 1rem; }
.auth-form label { display: block; font-size: var(--text-xs); font-weight: 600; color: var(--text-secondary); margin-bottom: 5px; }
.auth-form input { width: 100%; padding: 9px 12px; border: 1px solid var(--border-default); border-radius: var(--radius-md); background: var(--surface-card); color: var(--text-primary); font-size: var(--text-sm); font-family: var(--font-sans); }
.auth-form input:focus { outline: none; border-color: var(--color-primary-500); box-shadow: var(--focus-ring); }
.auth-form .btn--primary { width: 100%; justify-content: center; padding: 10px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 9px 16px; border-radius: var(--radius-md); font-size: var(--text-sm); font-weight: var(--font-weight-semibold); border: none; cursor: pointer; transition: background-color .12s ease; }
.btn svg { width: 14px; height: 14px; flex-shrink: 0; }
.btn--primary { background: var(--color-primary-600); color: #fff; }
.btn--primary:hover { background: var(--color-primary-700); }
.btn--secondary { background: var(--surface-card); color: var(--text-primary); border: 1px solid var(--border-strong); }
.btn--secondary:hover { background: var(--surface-secondary); }
.btn--success { background: var(--color-success-600); color: #fff; }
.btn--success:hover { background: var(--color-success-700); }
.btn--danger { background: var(--color-danger-600); color: #fff; }
.btn--danger:hover { background: var(--color-danger-700); }
.btn:disabled { background: var(--color-gray-200); color: var(--color-gray-400); cursor: not-allowed; }
.btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.btn--sm { padding: 6px 12px; font-size: 0.8rem; }

/* Tables */
.data-table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); background: var(--surface-card); }
.data-table th { background: var(--surface-secondary); text-align: left; padding: 9px 14px; font-weight: 600; color: var(--text-secondary); font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.03em; border-bottom: 1px solid var(--border-default); }
.data-table td { padding: 10px 14px; border-bottom: 1px solid var(--border-default); vertical-align: top; }
.data-table td.num { text-align: right; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.data-table tr:hover td { background: var(--surface-secondary); }
.data-table a { color: var(--color-primary-600); text-decoration: none; }
.data-table a:hover { text-decoration: underline; }

/* Badges — tinted background + matching text, icon + label */
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px 3px 8px; border-radius: var(--radius-full); font-size: var(--text-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.02em; }
.badge svg { width: 11px; height: 11px; flex-shrink: 0; }
.badge--pending { background: var(--color-warning-100); color: var(--color-warning-700); }
.badge--processing { background: var(--color-info-100); color: var(--color-info-700); }
.badge--processed { background: var(--color-success-100); color: var(--color-success-700); }
.badge--review { background: var(--color-danger-100); color: var(--color-danger-700); }
.badge--committed { background: var(--color-gray-100); color: var(--color-gray-600); }
.badge--failed { background: var(--color-danger-100); color: var(--color-danger-700); }
.badge--ai_review { background: var(--color-warning-100); color: var(--color-warning-700); }
.badge--ai { background: var(--color-ai-100); color: var(--color-ai-700); margin-left: 4px; }
.badge--info { background: var(--color-info-100); color: var(--color-info-700); }
.badge--warning { background: var(--color-warning-100); color: var(--color-warning-700); }
.badge--error { background: var(--color-danger-100); color: var(--color-danger-700); }
.badge--over { background: var(--color-danger-100); color: var(--color-danger-700); }
.badge--under { background: var(--color-info-100); color: var(--color-info-700); }
.badge--on_target { background: var(--color-success-100); color: var(--color-success-700); }
.badge--approved { background: var(--color-success-100); color: var(--color-success-700); }
.badge--disputed { background: var(--color-danger-100); color: var(--color-danger-700); }
.badge--write_off { background: var(--color-gray-100); color: var(--color-gray-600); }
.badge--complete { background: var(--color-success-100); color: var(--color-success-700); }

/* Empty state */
.empty-state { color: var(--text-secondary); font-size: var(--text-sm); margin-top: 2rem; }

/* KPI grid */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; margin-bottom: 2rem; }
.kpi-card { background: var(--surface-card); border: 1px solid var(--border-default); border-radius: var(--radius-lg); padding: 16px; }
.kpi-card--highlight { border-color: var(--color-primary-500); }
.kpi-card .kpi-card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.kpi-card .kpi-card-head svg { width: 14px; height: 14px; color: var(--text-tertiary); }
.kpi-value { font-family: var(--font-mono); font-size: var(--text-xl); font-weight: 600; font-variant-numeric: tabular-nums; color: var(--text-primary); }
.kpi-label { font-size: var(--text-xs); color: var(--text-tertiary); font-weight: 500; }

/* Detail grid / cards */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-bottom: 1.5rem; }
.detail-card { background: var(--surface-card); border: 1px solid var(--border-default); border-radius: var(--radius-lg); padding: 1.25rem; }
.detail-card h2 { font-size: var(--text-md); font-weight: 600; margin-bottom: .75rem; }
.detail-list { display: grid; grid-template-columns: auto 1fr; gap: .25rem .75rem; font-size: var(--text-sm); }
.detail-list dt { color: var(--text-secondary); font-weight: 500; }

/* Dashboard two-column */
.dash-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.dash-grid h2 { font-size: var(--text-md); font-weight: 600; }

/* Filter bar / form controls */
.filter-bar { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 1rem; align-items: center; }
.filter-input, .filter-select, .filter-textarea {
  padding: 9px 12px; border-radius: var(--radius-md); border: 1px solid var(--border-default);
  background: var(--surface-card); color: var(--text-primary); font-size: var(--text-sm); font-family: var(--font-sans);
}
.filter-input:hover, .filter-select:hover, .filter-textarea:hover { border-color: var(--border-strong); }
.filter-input:focus, .filter-select:focus, .filter-textarea:focus { outline: none; border-color: var(--color-primary-500); box-shadow: var(--focus-ring); }
.filter-textarea { display: block; width: 100%; font-family: var(--font-mono); resize: vertical; }
.form-label { display: block; font-size: var(--text-xs); font-weight: 600; color: var(--text-secondary); margin-bottom: 5px; }

/* Credential display (one-time password reveal) */
.credential-box { font-family: var(--font-mono); background: var(--surface-secondary); border: 1px solid var(--border-default); border-radius: var(--radius-md); padding: 10px 12px; }

/* Pagination */
.pagination { display: flex; gap: 1rem; align-items: center; margin-top: 1rem; font-size: var(--text-sm); }
.pagination a { color: var(--color-primary-600); text-decoration: none; }

/* Accordion (Chargebacks grouped view) */
.acc-node { border: 1px solid var(--border-default); border-radius: var(--radius-md); margin-bottom: .5rem; background: var(--surface-card); }
.acc-node > summary.acc-header { list-style: none; cursor: pointer; }
.acc-node > summary.acc-header::-webkit-details-marker { display: none; }

.acc-header { display: flex; align-items: center; gap: .5rem; padding: .6rem .75rem; }
.acc-header:hover { background: var(--surface-secondary); }
.acc-header--distributor { font-weight: 600; }
.acc-header--invoice { font-weight: 500; padding-left: 1.75rem; background: var(--surface-secondary); }

.acc-caret { display: inline-block; width: .6rem; height: .6rem; border-right: 2px solid var(--text-secondary); border-bottom: 2px solid var(--text-secondary); transform: rotate(-45deg); transition: transform .15s ease; flex-shrink: 0; }
.acc-node[open] > summary.acc-header .acc-caret { transform: rotate(45deg); }

.acc-name { flex: 1; }
.acc-code { color: var(--text-tertiary); font-weight: 400; font-size: .85em; }
.acc-subtotal { color: var(--text-secondary); font-size: var(--text-xs); font-family: var(--font-mono); white-space: nowrap; }

.acc-invoice { margin: .4rem .5rem .4rem 1.5rem; }
.acc-cb-table { margin: 0 0 .5rem 1.75rem; width: calc(100% - 1.75rem); }

.acc-check { width: 1rem; height: 1rem; flex-shrink: 0; }
.acc-check-all-label { display: flex; align-items: center; gap: .4rem; font-size: var(--text-sm); color: var(--text-secondary); }