/* =========================================================
   AI Qadam — Design Tokens
   Tailwind 4 / shadcn/ui compatible. OKLCH color space.
   ========================================================= */

:root, [data-theme="light"] {
  --background:         oklch(1 0 0);
  --foreground:         oklch(0.145 0 0);
  --card:               oklch(0.99 0 0);
  --card-foreground:    oklch(0.145 0 0);
  --popover:            oklch(1 0 0);
  --popover-foreground: oklch(0.145 0 0);
  --muted:              oklch(0.97 0 0);
  --muted-foreground:   oklch(0.556 0 0);
  --border:             oklch(0.922 0 0);
  --input:              oklch(0.922 0 0);
  --primary:            oklch(0.58 0.10 192);         /* brand teal — circuit footprint */
  --primary-foreground: oklch(0.985 0 0);
  --secondary:          oklch(0.97 0 0);
  --secondary-foreground: oklch(0.205 0 0);
  --accent:             oklch(0.97 0 0);
  --accent-foreground:  oklch(0.205 0 0);
  --success:            oklch(0.696 0.17 162);
  --success-foreground: oklch(0.985 0 0);
  --warning:            oklch(0.768 0.188 70);
  --warning-foreground: oklch(0.145 0 0);
  --destructive:        oklch(0.577 0.245 27);
  --destructive-foreground: oklch(0.985 0 0);
  --ring:               oklch(0.58 0.10 192);
  --shadow-color:       0 0 0;
}

[data-theme="dark"] {
  --background:         oklch(0.145 0 0);
  --foreground:         oklch(0.985 0 0);
  --card:               oklch(0.205 0 0);
  --card-foreground:    oklch(0.985 0 0);
  --popover:            oklch(0.205 0 0);
  --popover-foreground: oklch(0.985 0 0);
  --muted:              oklch(0.269 0 0);
  --muted-foreground:   oklch(0.708 0 0);
  --border:             oklch(0.269 0 0);
  --input:              oklch(0.269 0 0);
  --primary:            oklch(0.70 0.105 192);        /* brand teal — brighter for dark */
  --primary-foreground: oklch(0.145 0 0);
  --secondary:          oklch(0.269 0 0);
  --secondary-foreground: oklch(0.985 0 0);
  --accent:             oklch(0.269 0 0);
  --accent-foreground:  oklch(0.985 0 0);
  --success:            oklch(0.765 0.17 162);
  --success-foreground: oklch(0.145 0 0);
  --warning:            oklch(0.823 0.188 70);
  --warning-foreground: oklch(0.145 0 0);
  --destructive:        oklch(0.704 0.191 22);
  --destructive-foreground: oklch(0.985 0 0);
  --ring:               oklch(0.70 0.105 192);
}

:root {
  /* Special-purpose */
  --live-indicator: oklch(0.7 0.2 145);
  --badge-bronze:   oklch(0.65 0.12 50);
  --badge-silver:   oklch(0.75 0.02 250);
  --badge-gold:     oklch(0.82 0.15 85);
  --badge-special:  oklch(0.65 0.23 295);
  --streak:         oklch(0.7 0.2 35);

  /* Logo — drive inline SVG fills. Static SVG files keep their hex fallbacks
     so /brand/*.svg works in <img>, og:image, favicon. When inlined into HTML
     these vars take over and pick up the active theme.
     Letter counters are hollow (fill-rule:evenodd compound paths), so no
     inset token is needed — whatever surface is behind the logo shows through. */
  --aiq-logo-teal: var(--primary);
  --aiq-logo-dark: var(--foreground);

  /* Fonts */
  --font-display: "Geist", system-ui, -apple-system, sans-serif;
  --font-sans:    "Inter", system-ui, -apple-system, sans-serif;
  --font-mono:    "JetBrains Mono", "SF Mono", Consolas, monospace;

  /* Radii */
  --radius-sm: 6px;
  --radius:    8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow:    0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

  /* Motion */
  --ease-out:    cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  background: var(--background);
  color: var(--foreground);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
code, pre, .mono { font-family: var(--font-mono); }
.display { font-family: var(--font-display); letter-spacing: -0.02em; }

/* =========================================================
   Layout primitives
   ========================================================= */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}
@media (min-width: 768px)  { .container { padding: 0 48px; } }
@media (min-width: 1024px) { .container { padding: 0 64px; } }

.divider {
  height: 1px;
  background: var(--border);
  border: 0;
  margin: 0;
}

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all 150ms var(--ease-out);
  white-space: nowrap;
  user-select: none;
}
.btn:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; }
.btn svg { width: 16px; height: 16px; flex-shrink: 0; }

.btn-sm  { height: 32px; padding: 0 12px; font-size: 13px; }
.btn-lg  { height: 44px; padding: 0 24px; font-size: 16px; }
.btn-icon { width: 40px; padding: 0; }
.btn-icon.btn-sm { width: 32px; }
.btn-icon.btn-lg { width: 44px; }

.btn-primary {
  background: var(--primary);
  color: var(--primary-foreground);
}
.btn-primary:hover {
  background: color-mix(in oklch, var(--primary) 88%, white);
}

.btn-secondary {
  background: var(--secondary);
  color: var(--secondary-foreground);
  border-color: var(--border);
}
.btn-secondary:hover {
  border-color: color-mix(in oklch, var(--primary) 40%, transparent);
}

.btn-ghost {
  background: transparent;
  color: var(--foreground);
}
.btn-ghost:hover {
  background: var(--muted);
}

.btn-outline {
  background: transparent;
  color: var(--foreground);
  border-color: var(--border);
}
.btn-outline:hover {
  border-color: color-mix(in oklch, var(--primary) 40%, transparent);
  background: var(--muted);
}

.btn-destructive {
  background: var(--destructive);
  color: var(--destructive-foreground);
}
.btn-destructive:hover {
  background: color-mix(in oklch, var(--destructive) 88%, white);
}

/* =========================================================
   Inputs
   ========================================================= */
.input, .textarea {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  font-size: 14px;
  font-family: inherit;
  background: transparent;
  color: var(--foreground);
  border: 1px solid var(--input);
  border-radius: var(--radius);
  transition: border-color 150ms var(--ease-out), box-shadow 150ms var(--ease-out);
}
.textarea { height: auto; min-height: 96px; padding: 10px 12px; resize: vertical; line-height: 1.5; }
.input::placeholder, .textarea::placeholder { color: var(--muted-foreground); }
.input:hover, .textarea:hover {
  border-color: color-mix(in oklch, var(--primary) 40%, transparent);
}
.input:focus, .textarea:focus {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 2px color-mix(in oklch, var(--ring) 30%, transparent);
}
.input.error, .textarea.error { border-color: var(--destructive); }
.input.error:focus, .textarea.error:focus {
  box-shadow: 0 0 0 2px color-mix(in oklch, var(--destructive) 30%, transparent);
}
.input-wrap { position: relative; }
.input-wrap > svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  color: var(--muted-foreground);
  pointer-events: none;
}
.input-wrap > .input { padding-left: 36px; }

.label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--foreground);
  margin-bottom: 6px;
}
.helper { font-size: 12px; color: var(--muted-foreground); margin-top: 6px; }
.helper.error { color: var(--destructive); }

/* =========================================================
   Badges
   ========================================================= */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 22px;
  padding: 0 8px;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  background: var(--muted);
  color: var(--foreground);
  border: 1px solid var(--border);
  line-height: 1;
}
.badge .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}
.badge-primary {
  background: color-mix(in oklch, var(--primary) 12%, transparent);
  color: var(--primary);
  border-color: color-mix(in oklch, var(--primary) 25%, transparent);
}
.badge-success {
  background: color-mix(in oklch, var(--success) 12%, transparent);
  color: var(--success);
  border-color: color-mix(in oklch, var(--success) 25%, transparent);
}
.badge-warning {
  background: color-mix(in oklch, var(--warning) 14%, transparent);
  color: var(--warning);
  border-color: color-mix(in oklch, var(--warning) 30%, transparent);
}
.badge-destructive {
  background: color-mix(in oklch, var(--destructive) 12%, transparent);
  color: var(--destructive);
  border-color: color-mix(in oklch, var(--destructive) 25%, transparent);
}
.badge.mono { font-family: var(--font-mono); letter-spacing: 0.02em; font-size: 11px; text-transform: uppercase; }

/* Tag (a slightly different badge style for topics/tech) */
.tag {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 8px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--muted-foreground);
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  line-height: 1;
}

/* =========================================================
   Avatars
   ========================================================= */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--muted);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-weight: 500;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
  user-select: none;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar-xs  { width: 24px;  height: 24px;  font-size: 10px; }
.avatar-sm  { width: 32px;  height: 32px;  font-size: 12px; }
.avatar-md  { width: 40px;  height: 40px;  font-size: 13px; }
.avatar-lg  { width: 56px;  height: 56px;  font-size: 16px; }
.avatar-xl  { width: 80px;  height: 80px;  font-size: 20px; }
.avatar-2xl { width: 120px; height: 120px; font-size: 32px; }

.avatar-wrap { position: relative; display: inline-flex; }
.avatar-wrap .status-dot {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--success);
  border: 2px solid var(--background);
}
.avatar-wrap.size-xl .status-dot { width: 16px; height: 16px; border-width: 3px; }
.avatar-wrap.size-2xl .status-dot { width: 20px; height: 20px; border-width: 3px; }

/* Avatar group (overlapping) */
.avatar-group { display: inline-flex; }
.avatar-group .avatar { border: 2px solid var(--card); margin-left: -8px; }
.avatar-group .avatar:first-child { margin-left: 0; }

/* =========================================================
   Checkbox, Radio, Switch
   ========================================================= */
.checkbox, .radio {
  appearance: none;
  -webkit-appearance: none;
  width: 16px; height: 16px;
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
  position: relative;
  transition: all 150ms var(--ease-out);
  flex-shrink: 0;
}
.checkbox { border-radius: 4px; }
.radio    { border-radius: 50%; }
.checkbox:hover, .radio:hover { border-color: color-mix(in oklch, var(--primary) 60%, transparent); }
.checkbox:checked, .radio:checked {
  background: var(--primary);
  border-color: var(--primary);
}
.checkbox:checked::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='white' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='3.5 8 6.5 11 12.5 5'/></svg>") center/12px no-repeat;
}
.radio:checked::after {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--primary-foreground);
}
.checkbox:focus-visible, .radio:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

.switch {
  appearance: none;
  -webkit-appearance: none;
  width: 36px; height: 20px;
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  position: relative;
  cursor: pointer;
  transition: all 150ms var(--ease-out);
  flex-shrink: 0;
}
.switch::after {
  content: '';
  position: absolute;
  top: 1px; left: 1px;
  width: 16px; height: 16px;
  background: var(--foreground);
  border-radius: 50%;
  transition: transform 150ms var(--ease-out), background 150ms var(--ease-out);
}
.switch:checked {
  background: var(--primary);
  border-color: var(--primary);
}
.switch:checked::after {
  transform: translateX(16px);
  background: var(--primary-foreground);
}
.switch:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; }

.control-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  cursor: pointer;
  user-select: none;
}

/* =========================================================
   Tooltip (CSS-only)
   ========================================================= */
.tooltip-host { position: relative; display: inline-flex; }
.tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--popover);
  color: var(--popover-foreground);
  border: 1px solid var(--border);
  padding: 6px 10px;
  font-size: 12px;
  border-radius: var(--radius);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all 150ms var(--ease-out);
  box-shadow: var(--shadow-md);
  z-index: 50;
}
.tooltip-host:hover .tooltip,
.tooltip-host:focus-within .tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* =========================================================
   Skeleton
   ========================================================= */
.skeleton {
  background: linear-gradient(90deg,
    var(--muted) 0%,
    color-mix(in oklch, var(--muted) 70%, var(--border)) 50%,
    var(--muted) 100%);
  background-size: 200% 100%;
  animation: skeleton 1.6s linear infinite;
  border-radius: var(--radius-sm);
}
@keyframes skeleton {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* =========================================================
   Cards
   ========================================================= */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color 150ms var(--ease-out), transform 150ms var(--ease-out);
}
.card.hoverable:hover {
  border-color: color-mix(in oklch, var(--primary) 40%, transparent);
  transform: translateY(-1px);
}
.card-flush { padding: 0; overflow: hidden; }

/* =========================================================
   Section-frame helper for the docs page
   ========================================================= */
.docs-section {
  padding: 72px 0;
  border-top: 1px solid var(--border);
}
.docs-section:first-of-type { border-top: 0; }
.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted-foreground);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 36px;
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin: 0 0 12px 0;
}
.section-lead {
  font-size: 16px;
  color: var(--muted-foreground);
  max-width: 640px;
  margin: 0 0 48px 0;
}
.subsection-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  margin: 48px 0 16px 0;
}
.subsection-title:first-child { margin-top: 0; }
.subsection-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted-foreground);
  letter-spacing: 0.04em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

/* small "code chip" used to label values throughout the docs */
.codechip {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  color: var(--muted-foreground);
  white-space: nowrap;
}

/* visually-hidden but accessible */
.sr {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}