/* ============================================================
   MAINFRAME ENTERPRISE DESIGN SYSTEM
   Shared CSS for Fortune-500 / law / accounting / blockchain
   Reference: Bloomberg Terminal, Linear, Stripe internal, Datadog
   Import in every enterprise product:
     <link rel="stylesheet" href="/products/enterprise/_styles.css">
   ============================================================ */

:root {
  /* Palette — navy/slate, terminal-grade */
  --ent-bg:        #0F1A2E;
  --ent-bg-deep:   #0A1322;
  --ent-panel:    #1A2540;
  --ent-panel-2:  #213056;
  --ent-border:   #2A3656;
  --ent-border-hi:#3A4870;

  --ent-fg:       #E2E8F0;
  --ent-fg-muted: #94A3B8;
  --ent-fg-dim:   #64748B;

  --ent-accent:   #38BDF8;
  --ent-accent-2: #0EA5E9;
  --ent-success:  #34D399;
  --ent-warn:     #FBBF24;
  --ent-err:      #F87171;

  /* Typography */
  --ent-font-mono: 'SF Mono', 'Menlo', 'Monaco', 'Consolas', 'Liberation Mono', monospace;
  --ent-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* 8px spacing grid */
  --ent-s-1: 4px;
  --ent-s-2: 8px;
  --ent-s-3: 16px;
  --ent-s-4: 24px;
  --ent-s-5: 32px;
  --ent-s-6: 48px;
  --ent-s-7: 64px;

  /* Sharp corners */
  --ent-r:    4px;
  --ent-r-sm: 2px;

  /* Type scale */
  --ent-fs-xs:   11px;
  --ent-fs-sm:   12px;
  --ent-fs-base: 13px;
  --ent-fs-md:   14px;
  --ent-fs-lg:   16px;
  --ent-fs-xl:   20px;
  --ent-fs-2xl:  28px;

  /* Lines */
  --ent-line:  1px solid var(--ent-border);
  --ent-line-hi: 1px solid var(--ent-border-hi);
}

/* Reset / base ============================================== */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--ent-bg);
  color: var(--ent-fg);
  font-family: var(--ent-font-sans);
  font-size: var(--ent-fs-base);
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--ent-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre, kbd, samp { font-family: var(--ent-font-mono); }

/* Numeric data — always monospace, tabular */
.ent-num, .ent-mono { font-family: var(--ent-font-mono); font-variant-numeric: tabular-nums; }

/* Layout primitives ========================================= */
.ent-app {
  display: grid;
  grid-template-rows: 40px 1fr 24px;
  height: 100vh;
}

.ent-topbar {
  background: var(--ent-bg-deep);
  border-bottom: var(--ent-line);
  display: flex;
  align-items: center;
  padding: 0 var(--ent-s-3);
  font-size: var(--ent-fs-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ent-fg-muted);
}
.ent-topbar__brand { color: var(--ent-fg); font-weight: 600; margin-right: var(--ent-s-4); }
.ent-topbar__sep { color: var(--ent-border-hi); margin: 0 var(--ent-s-2); }

.ent-statusbar {
  background: var(--ent-bg-deep);
  border-top: var(--ent-line);
  display: flex;
  align-items: center;
  padding: 0 var(--ent-s-3);
  font-family: var(--ent-font-mono);
  font-size: var(--ent-fs-xs);
  color: var(--ent-fg-dim);
  gap: var(--ent-s-3);
}

.ent-main { display: grid; grid-template-columns: 220px 1fr; min-height: 0; }

.ent-sidebar {
  background: var(--ent-bg-deep);
  border-right: var(--ent-line);
  padding: var(--ent-s-3) 0;
  overflow-y: auto;
}
.ent-sidebar__group { padding: var(--ent-s-2) var(--ent-s-3); color: var(--ent-fg-dim); font-size: var(--ent-fs-xs); text-transform: uppercase; letter-spacing: 0.08em; }
.ent-sidebar__item {
  display: block;
  padding: var(--ent-s-2) var(--ent-s-3);
  color: var(--ent-fg-muted);
  font-size: var(--ent-fs-sm);
  border-left: 2px solid transparent;
  cursor: pointer;
}
.ent-sidebar__item:hover { background: var(--ent-panel); color: var(--ent-fg); text-decoration: none; }
.ent-sidebar__item.is-active { background: var(--ent-panel); color: var(--ent-fg); border-left-color: var(--ent-accent); }

.ent-content { overflow: auto; padding: var(--ent-s-4); }

/* Panels ==================================================== */
.ent-panel {
  background: var(--ent-panel);
  border: var(--ent-line);
  border-radius: var(--ent-r);
  margin-bottom: var(--ent-s-3);
}
.ent-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--ent-s-2) var(--ent-s-3);
  border-bottom: var(--ent-line);
  font-size: var(--ent-fs-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ent-fg-muted);
}
.ent-panel__body { padding: var(--ent-s-3); }
.ent-panel__footer { padding: var(--ent-s-2) var(--ent-s-3); border-top: var(--ent-line); font-size: var(--ent-fs-xs); color: var(--ent-fg-dim); }

/* Dense data table ========================================== */
.ent-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--ent-font-mono);
  font-size: var(--ent-fs-sm);
}
.ent-table th, .ent-table td {
  text-align: left;
  padding: 6px var(--ent-s-2);
  border-bottom: var(--ent-line);
  white-space: nowrap;
}
.ent-table th {
  font-weight: 600;
  font-size: var(--ent-fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ent-fg-muted);
  background: var(--ent-bg-deep);
  position: sticky;
  top: 0;
}
.ent-table td.num, .ent-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.ent-table tbody tr:hover { background: var(--ent-panel-2); }
.ent-table tbody tr.is-selected { background: var(--ent-panel-2); }

/* Buttons — sharp 4px max, no gradients ===================== */
.ent-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--ent-s-2);
  background: var(--ent-panel);
  color: var(--ent-fg);
  border: 1px solid var(--ent-border);
  border-radius: var(--ent-r);
  padding: 6px 12px;
  font-family: var(--ent-font-sans);
  font-size: var(--ent-fs-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  text-transform: uppercase;
  transition: background 80ms linear, border-color 80ms linear;
}
.ent-btn:hover { background: var(--ent-panel-2); border-color: var(--ent-border-hi); }
.ent-btn:active { background: var(--ent-bg-deep); }
.ent-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.ent-btn--primary { background: var(--ent-accent); color: var(--ent-bg-deep); border-color: var(--ent-accent); }
.ent-btn--primary:hover { background: var(--ent-accent-2); border-color: var(--ent-accent-2); }
.ent-btn--ghost { background: transparent; }
.ent-btn--danger { color: var(--ent-err); border-color: var(--ent-err); }

/* Inputs ==================================================== */
.ent-input, .ent-select, .ent-textarea {
  background: var(--ent-bg-deep);
  color: var(--ent-fg);
  border: 1px solid var(--ent-border);
  border-radius: var(--ent-r);
  padding: 6px var(--ent-s-2);
  font-family: var(--ent-font-mono);
  font-size: var(--ent-fs-sm);
  width: 100%;
}
.ent-input:focus, .ent-select:focus, .ent-textarea:focus {
  outline: none;
  border-color: var(--ent-accent);
  box-shadow: 0 0 0 1px var(--ent-accent);
}
.ent-label {
  display: block;
  font-size: var(--ent-fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ent-fg-muted);
  margin-bottom: var(--ent-s-1);
}

/* Badges / tags / states ==================================== */
.ent-tag {
  display: inline-block;
  padding: 2px var(--ent-s-2);
  border-radius: var(--ent-r-sm);
  font-family: var(--ent-font-mono);
  font-size: var(--ent-fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: 1px solid var(--ent-border);
  color: var(--ent-fg-muted);
  background: var(--ent-bg-deep);
}
.ent-tag--ok   { color: var(--ent-success); border-color: rgba(52,211,153,0.4); }
.ent-tag--warn { color: var(--ent-warn);    border-color: rgba(251,191,36,0.4); }
.ent-tag--err  { color: var(--ent-err);     border-color: rgba(248,113,113,0.4); }
.ent-tag--info { color: var(--ent-accent);  border-color: rgba(56,189,248,0.4); }

/* Dot indicator (status light) */
.ent-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; vertical-align: middle; background: var(--ent-fg-dim); }
.ent-dot--ok   { background: var(--ent-success); box-shadow: 0 0 6px rgba(52,211,153,0.6); }
.ent-dot--warn { background: var(--ent-warn);    box-shadow: 0 0 6px rgba(251,191,36,0.6); }
.ent-dot--err  { background: var(--ent-err);     box-shadow: 0 0 6px rgba(248,113,113,0.6); }

/* KPI tiles ================================================= */
.ent-kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: var(--ent-s-2); margin-bottom: var(--ent-s-3); }
.ent-kpi {
  background: var(--ent-panel);
  border: var(--ent-line);
  border-radius: var(--ent-r);
  padding: var(--ent-s-2) var(--ent-s-3);
}
.ent-kpi__label { font-size: var(--ent-fs-xs); text-transform: uppercase; letter-spacing: 0.06em; color: var(--ent-fg-muted); }
.ent-kpi__value { font-family: var(--ent-font-mono); font-variant-numeric: tabular-nums; font-size: var(--ent-fs-2xl); color: var(--ent-fg); margin-top: var(--ent-s-1); }
.ent-kpi__delta { font-family: var(--ent-font-mono); font-size: var(--ent-fs-xs); margin-top: var(--ent-s-1); }
.ent-kpi__delta--up   { color: var(--ent-success); }
.ent-kpi__delta--down { color: var(--ent-err); }

/* Headings ================================================== */
.ent-h1 { font-size: var(--ent-fs-xl); font-weight: 600; letter-spacing: 0.02em; margin: 0 0 var(--ent-s-3) 0; }
.ent-h2 { font-size: var(--ent-fs-lg); font-weight: 600; margin: 0 0 var(--ent-s-2) 0; color: var(--ent-fg); }
.ent-h3 { font-size: var(--ent-fs-md); font-weight: 600; margin: 0 0 var(--ent-s-2) 0; color: var(--ent-fg-muted); text-transform: uppercase; letter-spacing: 0.06em; }

/* Dividers / rules ========================================== */
.ent-hr { border: 0; border-top: var(--ent-line); margin: var(--ent-s-3) 0; }

/* Scrollbar (subtle, terminal-style) ======================== */
.ent-content::-webkit-scrollbar,
.ent-sidebar::-webkit-scrollbar { width: 8px; height: 8px; }
.ent-content::-webkit-scrollbar-thumb,
.ent-sidebar::-webkit-scrollbar-thumb { background: var(--ent-border); border-radius: var(--ent-r-sm); }
.ent-content::-webkit-scrollbar-track,
.ent-sidebar::-webkit-scrollbar-track { background: transparent; }

/* Utility classes =========================================== */
.ent-flex   { display: flex; gap: var(--ent-s-2); align-items: center; }
.ent-grow   { flex: 1 1 auto; }
.ent-right  { margin-left: auto; }
.ent-muted  { color: var(--ent-fg-muted); }
.ent-dim    { color: var(--ent-fg-dim); }
.ent-ok     { color: var(--ent-success); }
.ent-warn   { color: var(--ent-warn); }
.ent-err    { color: var(--ent-err); }
.ent-upper  { text-transform: uppercase; letter-spacing: 0.06em; }
.ent-stack > * + * { margin-top: var(--ent-s-2); }
.ent-stack-lg > * + * { margin-top: var(--ent-s-4); }

/* No-emoji guard for chrome (decorative only) =============== */
.ent-chrome [class*="emoji"], .ent-chrome img.emoji { display: none !important; }