/* ════════════════════════════════════════════════════════════════════
   AIREP — base.css · v0.1
   Design system for an Intelli AI / AIREP Django ERP, with Nova chat.
   Drop into a Django app as static/css/airep.css and load in base.html.
   ════════════════════════════════════════════════════════════════════ */

/* ─── 01 · DESIGN TOKENS ─────────────────────────────────────────── */
:root {
  /* Brand */
  --color-ink:        #0d1220;
  --color-ink-soft:   rgba(13,18,32,0.72);
  --color-muted:      rgba(13,18,32,0.55);
  --color-paper:      #f0eee9;
  --color-paper-2:    #fdfcf9;
  --color-surface:    #ffffff;
  --color-rule:       rgba(13,18,32,0.10);
  --color-rule-strong:rgba(13,18,32,0.22);

  --color-accent:     #4da6ff;        /* primary blue — Nova */
  --color-accent-ink: #0d1220;
  --color-accent-soft:rgba(77,166,255,0.12);

  /* Semantic */
  --color-good:       #1f8a5b;
  --color-good-soft:  rgba(31,138,91,0.10);
  --color-warn:       #c5601a;
  --color-warn-soft:  rgba(197,96,26,0.10);
  --color-danger:     #c1573e;
  --color-danger-soft:rgba(193,87,62,0.10);
  --color-info:       #2e5e8c;
  --color-info-soft:  rgba(46,94,140,0.10);

  /* Typography */
  --font-display:     'Inter Tight', Inter, system-ui, sans-serif;
  --font-body:        'Inter', system-ui, sans-serif;
  --font-mono:        'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;

  --fs-eyebrow: 10px;   --ls-eyebrow: 0.16em;
  --fs-body-sm: 12.5px;
  --fs-body:    14px;
  --fs-body-lg: 16px;
  --fs-h6:      15px;
  --fs-h5:      17px;
  --fs-h4:      20px;
  --fs-h3:      24px;
  --fs-h2:      32px;
  --fs-h1:      42px;
  --fs-hero:    56px;

  /* Spacing — 4px base */
  --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: 56px; --space-10: 72px;

  /* Radii */
  --radius-xs: 4px; --radius-sm: 6px; --radius-md: 10px;
  --radius-lg: 14px; --radius-xl: 20px; --radius-pill: 999px;

  /* Shadows */
  --shadow-card:   0 1px 2px rgba(13,18,32,0.06);
  --shadow-pop:    0 8px 24px rgba(13,18,32,0.10), 0 2px 6px rgba(13,18,32,0.05);
  --shadow-modal:  0 24px 80px rgba(13,18,32,0.30), 0 4px 16px rgba(13,18,32,0.15);

  /* Layout */
  --rail-w: 220px; --rail-narrow-w: 64px;
  --topbar-h: 56px;
  --content-max: 1280px;
  --focus-ring: 0 0 0 3px var(--color-accent-soft);
}

html[data-theme='dark'] {
  --color-ink:        #f4f1ea;
  --color-ink-soft:   rgba(244,241,234,0.72);
  --color-muted:      rgba(244,241,234,0.50);
  --color-paper:      #0c0b0e;
  --color-paper-2:    #0a0a0e;
  --color-surface:    #16141a;
  --color-rule:       rgba(244,241,234,0.10);
  --color-rule-strong:rgba(244,241,234,0.22);
  --color-accent-ink: #0c0b0e;
  --color-accent-soft:rgba(77,166,255,0.18);
  --color-good:       #7cf5c9;
  --color-good-soft:  rgba(124,245,201,0.14);
  --color-warn:       #ffd93d;
  --color-warn-soft:  rgba(255,217,61,0.14);
  --color-danger:     #ff8a5b;
  --color-danger-soft:rgba(255,138,91,0.16);
  --shadow-card:      0 1px 2px rgba(0,0,0,0.40);
  --shadow-pop:       0 12px 30px rgba(0,0,0,0.55);
  --shadow-modal:     0 24px 80px rgba(0,0,0,0.65);
}

/* ─── 02 · RESET + BASE ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: pretty;
}
h1 { font-size: var(--fs-h1); letter-spacing: -0.03em; line-height: 1.05; }
h2 { font-size: var(--fs-h2); letter-spacing: -0.025em; line-height: 1.1; }
h3 { font-size: var(--fs-h3); letter-spacing: -0.02em; line-height: 1.15; }
h4 { font-size: var(--fs-h4); line-height: 1.2; }
h5 { font-size: var(--fs-h5); line-height: 1.25; }
h6 { font-size: var(--fs-h6); line-height: 1.3; }
p { margin: 0 0 var(--space-3); }
a { color: var(--color-ink); text-decoration: underline; text-underline-offset: 2px; text-decoration-color: var(--color-rule-strong); }
code, pre, .mono { font-family: var(--font-mono); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--ls-eyebrow);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-muted);
}

/* ─── 03 · BUTTONS ───────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px;
  border: 1px solid transparent; border-radius: var(--radius-md);
  background: var(--color-surface); color: var(--color-ink);
  font-family: var(--font-body); font-size: 13.5px; font-weight: 600; letter-spacing: -0.1px;
  cursor: pointer; text-decoration: none; line-height: 1.2;
  transition: background 120ms ease, border-color 120ms ease, transform 80ms ease;
}
.btn:hover { background: var(--color-rule); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.btn .icon { font-family: var(--font-mono); font-size: 14px; line-height: 1; }

.btn-primary  { background: var(--color-accent); color: var(--color-accent-ink); border-color: var(--color-accent); font-weight: 700; }
.btn-primary:hover  { filter: brightness(0.95); background: var(--color-accent); }
.btn-secondary{ background: var(--color-surface); color: var(--color-ink); border-color: var(--color-rule-strong); }
.btn-ghost    { background: transparent; border-color: transparent; color: var(--color-ink-soft); }
.btn-ghost:hover { background: var(--color-rule); color: var(--color-ink); }
.btn-danger   { background: var(--color-danger); color: #fff; border-color: var(--color-danger); font-weight: 700; }
.btn-danger:hover { filter: brightness(0.95); }
.btn-link     { background: transparent; padding: 0; border: none; color: var(--color-ink);
                text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--color-accent); }

.btn-sm { padding: 6px 11px; font-size: 12px; border-radius: var(--radius-sm); }
.btn-lg { padding: 13px 22px; font-size: 15px; border-radius: var(--radius-md); }
.btn[disabled], .btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* ─── 04 · FORMS ─────────────────────────────────────────────────── */
.field        { display: flex; flex-direction: column; gap: 6px; }
.field-label  { font-family: var(--font-mono); font-size: 10px; letter-spacing: 1.6px; font-weight: 700;
                color: var(--color-muted); text-transform: uppercase; }
.field-hint   { font-size: 11.5px; color: var(--color-muted); }
.field-error  { font-size: 11.5px; color: var(--color-danger); }

.input, .select, .textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-rule-strong);
  border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: 14px; color: var(--color-ink);
  line-height: 1.4;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none; border-color: var(--color-accent); box-shadow: var(--focus-ring);
}
.input[readonly], .input:disabled { background: var(--color-paper-2); color: var(--color-muted); }
.textarea { resize: vertical; min-height: 96px; }
.input--mono { font-family: var(--font-mono); font-size: 13px; }

.field-row { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.checkbox, .radio { width: 16px; height: 16px; accent-color: var(--color-accent); }

/* ─── 05 · PILLS / BADGES ────────────────────────────────────────── */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 9px 3px 8px; border-radius: var(--radius-pill);
  background: var(--color-rule); color: var(--color-ink);
  font-family: var(--font-mono); font-size: 10.5px; font-weight: 700;
  letter-spacing: 0.4px; line-height: 1.4;
}
.pill .dot { width: 6px; height: 6px; border-radius: 3px; background: currentColor; }
.pill-good   { background: var(--color-good-soft);   color: var(--color-good); }
.pill-warn   { background: var(--color-warn-soft);   color: var(--color-warn); }
.pill-danger { background: var(--color-danger-soft); color: var(--color-danger); }
.pill-info   { background: var(--color-info-soft);   color: var(--color-info); }
.pill-accent { background: var(--color-accent-soft); color: var(--color-ink); }

/* ─── 06 · CARDS ─────────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}
.card-pop { box-shadow: var(--shadow-card); }
.card-hd  { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: var(--space-3); }
.card-hd h3 { margin: 0; }

/* ─── 07 · ALERTS ────────────────────────────────────────────────── */
.alert {
  display: flex; gap: 12px; padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-rule);
  background: var(--color-paper-2);
  font-size: 13.5px; line-height: 1.5;
}
.alert .icon  { font-family: var(--font-mono); font-weight: 700; flex: none; }
.alert-info   { border-color: rgba(46,94,140,0.30);  background: var(--color-info-soft);   }
.alert-good   { border-color: rgba(31,138,91,0.30);  background: var(--color-good-soft);   }
.alert-warn   { border-color: rgba(197,96,26,0.30);  background: var(--color-warn-soft);   }
.alert-danger { border-color: rgba(193,87,62,0.30);  background: var(--color-danger-soft); }
.alert-accent { border-color: rgba(77,166,255,0.40); background: var(--color-accent-soft); }

/* ─── 08 · TABLES ────────────────────────────────────────────────── */
.table { width: 100%; border-collapse: collapse; font-size: 13px; background: var(--color-surface); }
.table thead th {
  text-align: left; padding: 10px 14px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 1.4px; font-weight: 700;
  color: var(--color-muted); text-transform: uppercase;
  border-bottom: 1px solid var(--color-rule);
  background: var(--color-paper-2);
  position: sticky; top: 0;
}
.table tbody td { padding: 11px 14px; border-bottom: 1px dashed var(--color-rule); vertical-align: middle; }
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover { background: var(--color-paper-2); }
.table .num    { text-align: right; font-family: var(--font-mono); font-weight: 700; }
.table .mono   { font-family: var(--font-mono); }
.table .strong { font-weight: 600; }

/* ─── 09 · PAGE CHROME ───────────────────────────────────────────── */
.page-header  { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: var(--space-7); }
.crumbs       { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.6px; color: var(--color-muted); text-transform: uppercase; }
.crumbs a     { color: var(--color-muted); text-decoration: none; }
.crumbs a:hover { color: var(--color-ink); }
.page-title   { font-size: var(--fs-h1); margin-top: 6px; }
.page-actions { display: flex; gap: 10px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--color-rule); margin-bottom: var(--space-5); }
.tab {
  padding: 10px 14px; border: none; background: transparent;
  font-family: var(--font-body); font-size: 13.5px; font-weight: 600;
  color: var(--color-ink-soft); border-bottom: 2px solid transparent;
  cursor: pointer; margin-bottom: -1px;
}
.tab:hover { color: var(--color-ink); }
.tab.is-active { color: var(--color-ink); border-bottom-color: var(--color-accent); }
.tab .count {
  display: inline-block; margin-left: 6px; padding: 1px 7px;
  font-family: var(--font-mono); font-size: 10px; font-weight: 700;
  background: var(--color-rule); border-radius: var(--radius-pill); color: var(--color-ink-soft);
}

/* ─── 10 · KPI ───────────────────────────────────────────────────── */
.kpi              { padding: 16px; background: var(--color-surface); border: 1px solid var(--color-rule); border-radius: var(--radius-md); }
.kpi .kpi-label   { font-family: var(--font-mono); font-size: 10px; letter-spacing: 1.6px; font-weight: 700;
                    color: var(--color-muted); text-transform: uppercase; }
.kpi .kpi-value   { font-family: var(--font-display); font-size: 26px; font-weight: 700; letter-spacing: -0.5px; margin-top: 6px; line-height: 1; }
.kpi .kpi-delta   { font-family: var(--font-mono); font-size: 11px; font-weight: 700; margin-top: 4px; letter-spacing: 0.4px; }
.kpi .kpi-delta.up   { color: var(--color-good); }
.kpi .kpi-delta.down { color: var(--color-danger); }

/* ─── 11 · EMPTY STATE ───────────────────────────────────────────── */
.empty       { padding: 56px 32px; text-align: center; border: 1px dashed var(--color-rule-strong);
               border-radius: var(--radius-md); background: var(--color-paper-2); }
.empty .icon { font-size: 32px; font-family: var(--font-mono); color: var(--color-muted); margin-bottom: 10px; }
.empty h4    { margin: 0 0 6px; }
.empty p     { color: var(--color-ink-soft); margin: 0 auto 18px; max-width: 44ch; }

/* ─── 12 · NOVA — BUBBLES, COMPOSER, CHIPS ──────────────────────── */
.nova-msg               { display: flex; gap: 12px; }
.nova-msg .av           { width: 30px; height: 30px; border-radius: 999px; flex: none;
                          background: var(--color-accent-soft); color: var(--color-ink);
                          display: inline-flex; align-items: center; justify-content: center; }
.nova-msg .av svg       { width: 18px; height: 18px; }
.nova-msg .body         { flex: 1; min-width: 0; }
.nova-msg .meta         { display: flex; align-items: baseline; gap: 8px; margin-bottom: 6px; }
.nova-msg .meta .who    { font-family: var(--font-mono); font-size: 10px; font-weight: 700; letter-spacing: 1.6px; }
.nova-msg .meta .tag    { font-family: var(--font-mono); font-size: 9px; font-weight: 700; letter-spacing: 1.4px;
                          color: var(--color-accent); border: 1px solid rgba(77,166,255,0.45);
                          border-radius: 3px; padding: 2px 6px; }
.nova-msg .meta .time   { font-family: var(--font-mono); font-size: 9.5px; color: var(--color-muted);
                          margin-left: auto; font-weight: 700; }
.nova-bubble {
  background: var(--color-surface);
  border: 1px solid var(--color-rule);
  border-radius: 4px 14px 14px 14px;
  padding: 14px 18px; line-height: 1.55; font-size: 14.5px;
}

.user-msg     { display: flex; justify-content: flex-end; gap: 12px; }
.user-bubble  {
  background: var(--color-ink); color: var(--color-paper);
  padding: 12px 16px; border-radius: 14px 14px 4px 14px;
  font-size: 14.5px; line-height: 1.5; max-width: 540px;
}
.user-msg .av {
  width: 30px; height: 30px; border-radius: 999px;
  background: #dad3c4; color: var(--color-ink);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 700; font-size: 13px;
}

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px; border-radius: var(--radius-pill);
  background: var(--color-surface); border: 1px solid var(--color-rule);
  font-size: 12px; font-weight: 600; cursor: pointer; color: var(--color-ink);
}
.chip:hover { background: var(--color-rule); }
.chip-primary { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-accent-ink); }

.source {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 8px 3px 5px; border-radius: 6px; background: var(--color-rule);
  font-family: var(--font-mono); font-size: 10px; font-weight: 700;
  color: var(--color-ink-soft); letter-spacing: 0.4px;
}
.source .n {
  width: 14px; height: 14px; border-radius: 3px;
  background: var(--color-ink); color: var(--color-paper);
  display: inline-flex; align-items: center; justify-content: center; font-size: 9px;
}

.composer {
  background: var(--color-surface); border: 1px solid var(--color-rule);
  border-radius: var(--radius-lg); padding: 14px 16px 12px;
  display: flex; flex-direction: column; gap: 10px;
}
.composer.is-focused { border-color: var(--color-accent); box-shadow: var(--focus-ring); }
.composer textarea {
  width: 100%; border: none; background: transparent; resize: none;
  font: inherit; color: var(--color-ink); outline: none; min-height: 22px;
}
.composer textarea::placeholder { color: var(--color-muted); }
.composer .row    { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.composer .tools  { display: flex; gap: 6px; flex-wrap: wrap; }
.composer .tools .chip { padding: 5px 10px; font-size: 11.5px; background: var(--color-rule); border-color: transparent; }
.composer .send   { background: var(--color-accent); color: var(--color-accent-ink);
                    border: none; border-radius: var(--radius-md); padding: 9px 16px;
                    font-weight: 700; font-size: 13px; cursor: pointer; }
.composer .hint   { font-family: var(--font-mono); font-size: 10px; color: var(--color-muted);
                    letter-spacing: 1.2px; font-weight: 700; }

/* ─── 13 · UTILITIES ─────────────────────────────────────────────── */
.muted   { color: var(--color-muted); }
.soft    { color: var(--color-ink-soft); }
.row     { display: flex; gap: var(--space-3); align-items: center; }
.col     { display: flex; flex-direction: column; gap: var(--space-3); }
.gap-2   { gap: var(--space-2); }
.gap-4   { gap: var(--space-4); }
.between { justify-content: space-between; }
.grow    { flex: 1; }