/* ============================================================
   Cognatu Design System — ds.css
   Shared across all portals.

   Token naming: --ds-<role>
   Component prefix: .ds-*

   WCAG AA compliance verified for all text/bg pairs.
   Dark:  text (#c9d1d9) on bg (#0d1117) ≈ 11:1
          muted (#8b949e) on bg (#0d1117) ≈ 5.4:1
   Light: text (#1e293b) on bg (#f8fafc) ≈ 15:1
          muted (#475569) on bg (#f8fafc) ≈ 7.2:1
   ============================================================ */

/* ── Design Tokens — Dark (default) ────────────────────────── */
:root {
  /* Backgrounds */
  --ds-bg:        #0d1117;
  --ds-surface:   #161b22;
  --ds-surface2:  #21262d;

  /* Borders */
  --ds-border:    #30363d;

  /* Text — WCAG AA on --ds-bg */
  --ds-heading:   #e6edf3;  /* 14:1  */
  --ds-text:      #c9d1d9;  /* 11:1  */
  --ds-muted:     #8b949e;  /*  5.4:1 */

  /* Brand */
  --ds-accent:       #58a6ff;
  --ds-accent-hover: #79bbff;
  --ds-accent-bg:    rgba(88, 166, 255, .12);
  --ds-accent-text:  #0d1117; /* text ON accent buttons */

  /* Semantic */
  --ds-green:   #3fb950;
  --ds-yellow:  #d29922;
  --ds-red:     #f85149;
  --ds-purple:  #bc8cff;
  --ds-teal:    #4ec9a8;

  /* Badge backgrounds (low opacity for dark) */
  --ds-badge-blue-bg:   rgba(88,166,255,.15);
  --ds-badge-green-bg:  rgba(63,185,80,.15);
  --ds-badge-yellow-bg: rgba(210,153,34,.15);
  --ds-badge-red-bg:    rgba(248,81,73,.15);
  --ds-badge-purple-bg: rgba(188,140,255,.15);
  --ds-badge-gray-bg:   #21262d;
  --ds-badge-teal-bg:   rgba(78,201,168,.15);

  /* Typography */
  --ds-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --ds-mono: 'SF Mono', Consolas, 'Liberation Mono', monospace;

  /* Radii */
  --ds-r-sm: 4px;
  --ds-r:    6px;
  --ds-r-lg: 10px;
  --ds-r-xl: 14px;

  /* Shadows */
  --ds-shadow:    0 4px 24px rgba(0,0,0,.5);
  --ds-shadow-sm: 0 1px 6px  rgba(0,0,0,.3);

  /* Focus ring */
  --ds-ring: 0 0 0 3px rgba(88,166,255,.35);

  /* Transitions */
  --ds-t: .12s ease;
}

/* ── Light theme overrides ──────────────────────────────────── */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --ds-bg:        #f8fafc;
    --ds-surface:   #ffffff;
    --ds-surface2:  #f1f5f9;
    --ds-border:    #e2e8f0;

    --ds-heading:   #0f172a;
    --ds-text:      #1e293b;
    --ds-muted:     #475569; /* darkened from #64748b → 7.2:1 on bg */

    --ds-accent:       #1d4ed8;
    --ds-accent-hover: #1e40af;
    --ds-accent-bg:    rgba(29,78,216,.08);
    --ds-accent-text:  #ffffff;

    --ds-green:   #15803d;
    --ds-yellow:  #b45309;
    --ds-red:     #b91c1c;
    --ds-purple:  #6d28d9;
    --ds-teal:    #0f766e;

    --ds-badge-blue-bg:   #dbeafe;
    --ds-badge-green-bg:  #dcfce7;
    --ds-badge-yellow-bg: #fef9c3;
    --ds-badge-red-bg:    #fee2e2;
    --ds-badge-purple-bg: #ede9fe;
    --ds-badge-gray-bg:   #f1f5f9;
    --ds-badge-teal-bg:   #ccfbf1;

    --ds-shadow:    0 4px 24px rgba(0,0,0,.08);
    --ds-shadow-sm: 0 1px 6px  rgba(0,0,0,.05);

    --ds-ring: 0 0 0 3px rgba(29,78,216,.2);
  }
}

[data-theme="light"] {
  --ds-bg:        #f8fafc;
  --ds-surface:   #ffffff;
  --ds-surface2:  #f1f5f9;
  --ds-border:    #e2e8f0;

  --ds-heading:   #0f172a;
  --ds-text:      #1e293b;
  --ds-muted:     #475569;

  --ds-accent:       #1d4ed8;
  --ds-accent-hover: #1e40af;
  --ds-accent-bg:    rgba(29,78,216,.08);
  --ds-accent-text:  #ffffff;

  --ds-green:   #15803d;
  --ds-yellow:  #b45309;
  --ds-red:     #b91c1c;
  --ds-purple:  #6d28d9;
  --ds-teal:    #0f766e;

  --ds-badge-blue-bg:   #dbeafe;
  --ds-badge-green-bg:  #dcfce7;
  --ds-badge-yellow-bg: #fef9c3;
  --ds-badge-red-bg:    #fee2e2;
  --ds-badge-purple-bg: #ede9fe;
  --ds-badge-gray-bg:   #f1f5f9;
  --ds-badge-teal-bg:   #ccfbf1;

  --ds-shadow:    0 4px 24px rgba(0,0,0,.08);
  --ds-shadow-sm: 0 1px 6px  rgba(0,0,0,.05);

  --ds-ring: 0 0 0 3px rgba(29,78,216,.2);
}

/* ── Base reset (load after your own reset if you have one) ─── */
.ds-base * { box-sizing: border-box; }

/* ── ════════════════════════════════════════════════════════ ── */
/* ── Buttons ─────────────────────────────────────────────────── */

.ds-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--ds-r);
  border: 1px solid transparent;
  font-family: var(--ds-font);
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
  cursor: pointer;
  text-decoration: none;
  transition: opacity var(--ds-t), background var(--ds-t), border-color var(--ds-t), color var(--ds-t);
  white-space: nowrap;
  user-select: none;
}
.ds-btn:focus-visible { outline: none; box-shadow: var(--ds-ring); }
.ds-btn:disabled      { opacity: .4; cursor: not-allowed; }

.ds-btn-primary {
  background: var(--ds-accent);
  color: var(--ds-accent-text);
  border-color: var(--ds-accent);
}
.ds-btn-primary:hover:not(:disabled) { background: var(--ds-accent-hover); border-color: var(--ds-accent-hover); }

.ds-btn-secondary {
  background: var(--ds-surface2);
  color: var(--ds-text);
  border-color: var(--ds-border);
}
.ds-btn-secondary:hover:not(:disabled) { border-color: var(--ds-accent); color: var(--ds-accent); }

.ds-btn-ghost {
  background: transparent;
  color: var(--ds-muted);
  border-color: var(--ds-border);
}
.ds-btn-ghost:hover:not(:disabled)  { border-color: var(--ds-accent); color: var(--ds-accent); background: var(--ds-accent-bg); }
.ds-btn-ghost.ds-active             { border-color: var(--ds-accent); color: var(--ds-accent); background: var(--ds-accent-bg); }

.ds-btn-danger {
  background: transparent;
  color: var(--ds-red);
  border-color: var(--ds-border);
}
.ds-btn-danger:hover:not(:disabled) { background: rgba(248,81,73,.1); border-color: var(--ds-red); }

.ds-btn-sm { padding: 5px 10px; font-size: 11px; gap: 4px; }
.ds-btn-lg { padding: 10px 20px; font-size: 15px; font-weight: 600; }
.ds-btn-xl { padding: 13px 28px; font-size: 16px; font-weight: 700; border-radius: var(--ds-r-lg); }

/* ── ════════════════════════════════════════════════════════ ── */
/* ── Cards ───────────────────────────────────────────────────── */

.ds-card {
  background: var(--ds-surface);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-r-lg);
  padding: 16px;
}
.ds-card-sm { padding: 12px; border-radius: var(--ds-r); }
.ds-card-lg { padding: 24px; border-radius: var(--ds-r-xl); }
.ds-card-elevated { box-shadow: var(--ds-shadow); }

.ds-card-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--ds-heading);
  text-transform: uppercase;
  letter-spacing: .4px;
  margin-bottom: 10px;
}

/* ── ════════════════════════════════════════════════════════ ── */
/* ── Badges ──────────────────────────────────────────────────── */

.ds-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  line-height: 1.4;
}
.ds-badge-blue   { background: var(--ds-badge-blue-bg);   color: var(--ds-accent); }
.ds-badge-green  { background: var(--ds-badge-green-bg);  color: var(--ds-green); }
.ds-badge-yellow { background: var(--ds-badge-yellow-bg); color: var(--ds-yellow); }
.ds-badge-red    { background: var(--ds-badge-red-bg);    color: var(--ds-red); }
.ds-badge-purple { background: var(--ds-badge-purple-bg); color: var(--ds-purple); }
.ds-badge-gray   { background: var(--ds-badge-gray-bg);   color: var(--ds-muted); }
.ds-badge-teal   { background: var(--ds-badge-teal-bg);   color: var(--ds-teal); }

/* Dot prefix for status badges */
.ds-badge::before {
  content: '';
  display: none;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}
.ds-badge-dot::before { display: block; }

/* ── ════════════════════════════════════════════════════════ ── */
/* ── Inputs ──────────────────────────────────────────────────── */

.ds-input,
.ds-textarea,
.ds-select {
  display: block;
  width: 100%;
  background: var(--ds-surface2);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-r);
  color: var(--ds-text);
  font-family: var(--ds-font);
  font-size: 13px;
  padding: 9px 11px;
  outline: none;
  transition: border-color var(--ds-t), box-shadow var(--ds-t);
  -webkit-appearance: none;
}
.ds-input:focus,
.ds-textarea:focus,
.ds-select:focus { border-color: var(--ds-accent); box-shadow: var(--ds-ring); }
.ds-input::placeholder,
.ds-textarea::placeholder { color: var(--ds-muted); opacity: .6; }
.ds-input:disabled,
.ds-textarea:disabled,
.ds-select:disabled { opacity: .5; cursor: not-allowed; }
.ds-textarea { resize: vertical; min-height: 80px; }

.ds-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--ds-muted);
  text-transform: uppercase;
  letter-spacing: .4px;
  margin-bottom: 5px;
}

.ds-field { margin-bottom: 14px; }
.ds-field:last-child { margin-bottom: 0; }

.ds-input-mono { font-family: var(--ds-mono); font-size: 12px; }

/* ── ════════════════════════════════════════════════════════ ── */
/* ── Tables ──────────────────────────────────────────────────── */

.ds-table-wrap {
  background: var(--ds-surface);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-r-lg);
  overflow: hidden;
}
.ds-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.ds-table th {
  text-align: left;
  padding: 9px 14px;
  font-size: 11px;
  font-weight: 600;
  color: var(--ds-muted);
  text-transform: uppercase;
  letter-spacing: .4px;
  border-bottom: 1px solid var(--ds-border);
  background: var(--ds-surface2);
}
.ds-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--ds-surface2);
  color: var(--ds-text);
}
.ds-table tr:last-child td { border-bottom: none; }
.ds-table tr:hover td { background: var(--ds-surface2); }
.ds-table .ds-table-empty td { text-align: center; color: var(--ds-muted); padding: 32px; }

/* ── ════════════════════════════════════════════════════════ ── */
/* ── Alerts ──────────────────────────────────────────────────── */

.ds-alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--ds-r);
  border: 1px solid;
  font-size: 13px;
  line-height: 1.5;
}
.ds-alert-icon { font-size: 15px; flex-shrink: 0; margin-top: 1px; }
.ds-alert-info    { background: var(--ds-badge-blue-bg);   border-color: rgba(88,166,255,.25);  color: var(--ds-accent); }
.ds-alert-success { background: var(--ds-badge-green-bg);  border-color: rgba(63,185,80,.25);   color: var(--ds-green); }
.ds-alert-warning { background: var(--ds-badge-yellow-bg); border-color: rgba(210,153,34,.25);  color: var(--ds-yellow); }
.ds-alert-error   { background: var(--ds-badge-red-bg);    border-color: rgba(248,81,73,.25);   color: var(--ds-red); }

/* ── ════════════════════════════════════════════════════════ ── */
/* ── Modal (uses native <dialog>) ───────────────────────────── */

.ds-modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}
.ds-modal {
  background: var(--ds-surface);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-r-xl);
  box-shadow: var(--ds-shadow);
  padding: 24px;
  min-width: 340px;
  max-width: 540px;
  width: 100%;
}
.ds-modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.ds-modal-title  { font-size: 16px; font-weight: 700; color: var(--ds-heading); }
.ds-modal-close  {
  background: none; border: none; cursor: pointer;
  color: var(--ds-muted); font-size: 18px; line-height: 1; padding: 2px 5px;
  border-radius: var(--ds-r-sm); transition: color var(--ds-t);
}
.ds-modal-close:hover { color: var(--ds-text); }
.ds-modal-footer { display: flex; gap: 8px; justify-content: flex-end; margin-top: 20px; }

/* Native <dialog> integration */
dialog.ds-modal-dialog {
  background: var(--ds-surface);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-r-xl);
  box-shadow: var(--ds-shadow);
  padding: 24px;
  max-width: 540px;
  width: 100%;
  color: var(--ds-text);
}
dialog.ds-modal-dialog::backdrop { background: rgba(0,0,0,.55); backdrop-filter: blur(2px); }

/* ── ════════════════════════════════════════════════════════ ── */
/* ── Spinner ─────────────────────────────────────────────────── */

.ds-spinner {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid var(--ds-border);
  border-top-color: var(--ds-accent);
  border-radius: 50%;
  animation: ds-spin .7s linear infinite;
  flex-shrink: 0;
}
.ds-spinner-sm { width: 12px; height: 12px; }
.ds-spinner-lg { width: 24px; height: 24px; border-width: 3px; }

@keyframes ds-spin { to { transform: rotate(360deg); } }

/* ── ════════════════════════════════════════════════════════ ── */
/* ── Status dots ─────────────────────────────────────────────── */

.ds-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.ds-dot-pulse {
  animation: ds-pulse 2s ease-in-out infinite;
}
.ds-dot-green  { background: var(--ds-green);  box-shadow: 0 0 6px var(--ds-green); }
.ds-dot-yellow { background: var(--ds-yellow); }
.ds-dot-red    { background: var(--ds-red);    }
.ds-dot-muted  { background: var(--ds-muted);  }

@keyframes ds-pulse { 0%,100% { opacity: 1; } 50% { opacity: .4; } }

/* ── ════════════════════════════════════════════════════════ ── */
/* ── Theme toggle ────────────────────────────────────────────── */

.ds-theme-toggle {
  background: var(--ds-surface2);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-r);
  color: var(--ds-muted);
  cursor: pointer;
  font-size: 14px;
  padding: 5px 8px;
  line-height: 1;
  transition: border-color var(--ds-t), color var(--ds-t);
}
.ds-theme-toggle:hover { border-color: var(--ds-accent); color: var(--ds-accent); }

/* ── ════════════════════════════════════════════════════════ ── */
/* ── Utility helpers ─────────────────────────────────────────── */

.ds-text-heading { color: var(--ds-heading); }
.ds-text-muted   { color: var(--ds-muted); }
.ds-text-accent  { color: var(--ds-accent); }
.ds-text-green   { color: var(--ds-green); }
.ds-text-yellow  { color: var(--ds-yellow); }
.ds-text-red     { color: var(--ds-red); }

.ds-mono { font-family: var(--ds-mono); font-size: .9em; }

.ds-divider {
  height: 1px;
  background: var(--ds-border);
  border: none;
  margin: 16px 0;
}

.ds-sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* Stat card */
.ds-stat { background: var(--ds-surface); border: 1px solid var(--ds-border); border-radius: var(--ds-r-lg); padding: 18px 20px; }
.ds-stat-label { font-size: 11px; font-weight: 600; color: var(--ds-muted); text-transform: uppercase; letter-spacing: .4px; margin-bottom: 8px; }
.ds-stat-value { font-size: 28px; font-weight: 700; color: var(--ds-heading); line-height: 1; }
.ds-stat-sub   { font-size: 11px; color: var(--ds-muted); margin-top: 6px; }
.ds-stat-delta-up   { font-size: 11px; color: var(--ds-green); margin-top: 4px; }
.ds-stat-delta-down { font-size: 11px; color: var(--ds-red);   margin-top: 4px; }

/* Code block */
.ds-code {
  display: block;
  background: var(--ds-surface2);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-r);
  color: var(--ds-text);
  font-family: var(--ds-mono);
  font-size: 12px;
  padding: 12px 14px;
  overflow-x: auto;
  line-height: 1.6;
  white-space: pre;
}