/* ═══════════════════════════════════════════════════════════════
   PROPUESTA A — "Técnico Neutro"
   Light gray/white · system fonts · single blue accent
   Reference: sober Linear / Notion
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* ── Palette ── */
  --color-bg:              #F5F6F7;
  --color-surface:         #FFFFFF;
  --color-border:          #E2E8F0;
  --color-border-subtle:   #EEF0F3;
  --color-bg-hover:        #F0F2F5;
  --color-bg-alt:          #FAFBFC;

  /* Accent: blue (single accent rule) */
  --color-accent:          #2563EB;
  --color-accent-dark:     #1D4ED8;
  --color-accent-subtle:   #EFF6FF;
  --color-accent-border:   #BFDBFE;

  /* Text */
  --color-text:            #0F172A;
  --color-text-muted:      #64748B;
  --color-text-placeholder:#94A3B8;

  /* Semantic: warning */
  --color-warning-text:          #B45309;
  --color-warning-row:           #FFFBEB;
  --color-warning-banner-bg:     #FFFBEB;
  --color-warning-banner-border: #FDE68A;
  --color-warning-badge-bg:      #FEF3C7;
  --color-warning-badge-text:    #92400E;
  --color-warning-badge-border:  #FCD34D;

  /* Semantic: danger */
  --color-danger:          #DC2626;
  --color-danger-subtle:   #FEF2F2;
  --color-danger-border:   #FECACA;

  /* Table specifics */
  --color-th-bg:           #F8FAFC;
  --color-chapter-bg:      #F1F5F9;
  --color-totals-bg:       #F1F5F9;
  --color-row-hover:       #F8FAFC;
  --color-tag-bg:          #EFF6FF;
  --color-tag-text:        #2563EB;
  --color-tag-border:      #BFDBFE;

  /* Canvas */
  --color-canvas-bg:       #ECEFF3;
  --color-canvas-grid:     #CDD2DB;
  --color-canvas-grid-major:#B8BEC9;
  --color-statusbar-bg:    rgba(255,255,255,0.92);

  /* Floor plan */
  --color-fp-wall:         #1E2A3A;
  --fp-wall-width:         2.5;
  --color-fp-room:         rgba(255,255,255,0.55);
  --color-fp-label:        #334155;
  --color-fp-dim:          #2563EB;

  /* ── Typography ── */
  --font-ui:    system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono:  "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;

  /* Type scale */
  --text-xs:    11px;
  --text-sm:    13px;
  --text-base:  15px;
  --text-lg:    18px;
  --text-xl:    22px;

  /* ── Spacing scale ── */
  --space-1:    4px;
  --space-1-5:  6px;
  --space-2:    8px;
  --space-2-5:  10px;
  --space-3:    12px;
  --space-4:    16px;
  --space-5:    20px;
  --space-6:    24px;
  --space-8:    32px;

  /* ── Border ── */
  --border-width: 1px;

  /* ── Radii ── */
  --radius-xs:  3px;
  --radius-sm:  6px;
  --radius-md:  8px;
  --radius-lg:  12px;

  /* ── Shadows ── */
  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
}