/* ==========================================================================
   PODBOOKS.AI  Unified Design System v1
   Award-grade product UI tokens, primitives, and components.

   Palette philosophy:
     Signal Orange (#F26522) is the hero. It is balanced by a warm-neutral
     surface set, an anchoring ink for typography, and two cool accents
     (Teal for information, Indigo for premium) chosen for complementary
     harmony. Semantic states (success, warning, danger, info) sit
     behind soft tinted backgrounds so the interface stays quiet until it
     needs to speak.

   Usage:
     <link rel="stylesheet" href="/static/css/podbooks-ui.css">
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* ---------- Brand orange ---------- */
  --pb-p:        #F26522;
  --pb-p-hover:  #E55A1A;
  --pb-p-soft:   #FF8A50;
  --pb-p-tint:   rgba(242,101,34,.08);
  --pb-p-ring:   rgba(242,101,34,.22);
  --pb-p-edge:   rgba(242,101,34,.45);
  --pb-p-grad:   linear-gradient(135deg,#F26522 0%,#FF8A50 100%);
  --pb-p-grad-d: linear-gradient(135deg,#E55A1A 0%,#F26522 100%);
  --pb-p-glow:   0 10px 28px rgba(242,101,34,.28);

  /* ---------- Complementary accents ---------- */
  --pb-teal:      #0EA5A4;   /* cool complement of orange */
  --pb-teal-soft: #5EEAD4;
  --pb-teal-tint: rgba(14,165,164,.08);

  --pb-indigo:     #6366F1;  /* premium / secondary */
  --pb-indigo-soft:#818CF8;
  --pb-indigo-tint:rgba(99,102,241,.08);

  --pb-amber:     #F59E0B;   /* highlight next to orange */
  --pb-amber-soft:#FCD34D;
  --pb-amber-tint:rgba(245,158,11,.08);

  --pb-rose:     #F43F5E;    /* reserved accent */
  --pb-rose-tint:rgba(244,63,94,.08);

  /* ---------- Semantic ---------- */
  --pb-success:      #10B981;
  --pb-success-ink:  #047857;
  --pb-success-tint: rgba(16,185,129,.10);

  --pb-warning:      #F59E0B;
  --pb-warning-ink:  #B45309;
  --pb-warning-tint: rgba(245,158,11,.10);

  --pb-danger:       #EF4444;
  --pb-danger-ink:   #B91C1C;
  --pb-danger-tint:  rgba(239,68,68,.10);

  --pb-info:         #3B82F6;
  --pb-info-ink:     #1D4ED8;
  --pb-info-tint:    rgba(59,130,246,.10);

  /* ---------- Surfaces ---------- */
  --pb-bg:         #F7F8FA;            /* app background */
  --pb-bg-soft:    #F0F2F5;            /* recessed */
  --pb-bg-warm:    #FDF8F4;            /* warm orange wash */
  --pb-bg-gradient:linear-gradient(160deg,#EEF1F6 0%,#F0F2F5 40%,#F4F2EF 100%);
  --pb-card:       #FFFFFF;
  --pb-surface-2:  #F1F5F9;
  --pb-surface-3:  #F8FAFC;
  --pb-border:     #E5E7EB;
  --pb-border-soft:#F1F5F9;
  --pb-border-strong:#D1D5DB;

  /* ---------- Typography colors ---------- */
  --pb-tx:         #0F172A;            /* primary ink */
  --pb-tx-2:       #334155;
  --pb-tx-3:       #64748B;
  --pb-tx-4:       #94A3B8;
  --pb-tx-5:       #CBD5E1;
  --pb-tx-inv:     #FFFFFF;

  /* ---------- Dark ink (for hero, stats strips) ---------- */
  --pb-ink:        #0F172A;
  --pb-ink-2:      #1E293B;
  --pb-ink-3:      #334155;
  --pb-ink-grad:   linear-gradient(135deg,#0F172A 0%,#1E293B 55%,#2E1810 100%);
  --pb-ink-orange: linear-gradient(135deg,#1A1A2E 0%,#16213E 60%,#3E1B0A 100%);

  /* ---------- Elevation ---------- */
  --pb-sh-1: 0 1px 2px rgba(15,23,42,.06);
  --pb-sh-2: 0 2px 6px rgba(15,23,42,.06), 0 1px 2px rgba(15,23,42,.04);
  --pb-sh-3: 0 6px 16px rgba(15,23,42,.08), 0 2px 4px rgba(15,23,42,.04);
  --pb-sh-4: 0 12px 24px rgba(15,23,42,.10), 0 4px 8px rgba(15,23,42,.05);
  --pb-sh-5: 0 24px 48px rgba(15,23,42,.14), 0 8px 16px rgba(15,23,42,.08);
  --pb-sh-card: 0 1px 3px rgba(0,0,0,.04), 0 1px 2px rgba(0,0,0,.03);
  --pb-sh-lift: 0 8px 24px rgba(15,23,42,.10);
  --pb-sh-p:    0 4px 14px rgba(242,101,34,.28);
  --pb-sh-p-lg: 0 10px 28px rgba(242,101,34,.38);

  /* ---------- Radius ---------- */
  --pb-r-xs: 4px;
  --pb-r-sm: 8px;
  --pb-r-md: 12px;
  --pb-r-lg: 16px;
  --pb-r-xl: 20px;
  --pb-r-2xl:28px;
  --pb-r-pill:999px;

  /* ---------- Typography ---------- */
  --pb-ff: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --pb-ff-display: 'Inter', ui-sans-serif, system-ui, sans-serif;
  --pb-ff-mono: 'JetBrains Mono', 'SF Mono', ui-monospace, Menlo, Consolas, monospace;

  --pb-fz-xs: 11px;
  --pb-fz-sm: 12px;
  --pb-fz-base: 14px;
  --pb-fz-md: 15px;
  --pb-fz-lg: 17px;
  --pb-fz-xl: 20px;
  --pb-fz-2xl:24px;
  --pb-fz-3xl:30px;
  --pb-fz-4xl:38px;
  --pb-fz-5xl:clamp(36px, 5vw, 56px);

  --pb-lh-tight: 1.15;
  --pb-lh-snug:  1.35;
  --pb-lh-base:  1.6;
  --pb-lh-loose: 1.75;

  /* ---------- Motion ---------- */
  --pb-ez:        cubic-bezier(.4, 0, .2, 1);
  --pb-ez-in:     cubic-bezier(.4, 0, 1, 1);
  --pb-ez-out:    cubic-bezier(0, 0, .2, 1);
  --pb-ez-spring: cubic-bezier(.34, 1.56, .64, 1);
  --pb-t-fast: .15s;
  --pb-t-base: .25s;
  --pb-t-slow: .4s;

  /* ---------- Spacing scale ---------- */
  --pb-s-1: 4px;  --pb-s-2: 8px;  --pb-s-3: 12px; --pb-s-4: 16px;
  --pb-s-5: 20px; --pb-s-6: 24px; --pb-s-8: 32px; --pb-s-10:40px;
  --pb-s-12:48px; --pb-s-16:64px; --pb-s-20:80px;

  /* ---------- Layout ---------- */
  --pb-nav-h: 64px;
  --pb-container: 1200px;
  --pb-container-md: 960px;
  --pb-container-sm: 720px;
  --pb-container-xs: 480px;

  /* ==========================================================
     Legacy aliases  existing templates use short variable
     names. Map them onto the new tokens so older inline styles
     keep working while new pages use --pb-* names.
     ========================================================== */
  --p:       var(--pb-p);
  --p2:      var(--pb-p-soft);
  --pr:      var(--pb-p-ring);
  --p3:      var(--pb-p-tint);
  --grad:    var(--pb-p-grad);

  --bg:      var(--pb-bg);
  --bg2:     var(--pb-surface-2);
  --bg3:     var(--pb-surface-3);
  --bg-warm: var(--pb-bg-warm);
  --card:    var(--pb-card);
  --panel:   var(--pb-card);
  --panel2:  var(--pb-surface-2);

  --tx:      var(--pb-tx);
  --tx2:     var(--pb-tx-2);
  --tx3:     var(--pb-tx-3);
  --tx4:     var(--pb-tx-4);
  --tx5:     var(--pb-tx-5);

  --bd:      var(--pb-border);
  --bd2:     var(--pb-border-soft);
  --border:  var(--pb-border);

  --g:       var(--pb-success);
  --g2:      var(--pb-success-ink);
  --g3:      var(--pb-success-tint);
  --r:       var(--pb-danger);
  --y:       var(--pb-warning);
  --b:       var(--pb-info);
  --indigo:  var(--pb-indigo);
  --indigo2: var(--pb-indigo-soft);
  --indigo3: var(--pb-indigo-tint);
  --teal:    var(--pb-teal);

  --sh:      var(--pb-sh-card);
  --sh2:     var(--pb-sh-3);
  --sh-lift: var(--pb-sh-lift);
  --R:       var(--pb-r-md);
  --Rs:      var(--pb-r-sm);
  --Rx:      var(--pb-r-xs);
  --Rl:      var(--pb-r-lg);
  --ez:      var(--pb-ez);
}

/* ==========================================================================
   Base reset
   ========================================================================== */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; -webkit-tap-highlight-color: transparent; scroll-behavior: smooth; overflow-x: hidden; }
body {
  font-family: var(--pb-ff);
  font-size: var(--pb-fz-base);
  line-height: var(--pb-lh-base);
  color: var(--pb-tx);
  background: var(--pb-bg-gradient);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, video { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
a { color: var(--pb-p); text-decoration: none; transition: color var(--pb-t-fast) var(--pb-ez); }
a:hover { color: var(--pb-p-hover); }
::selection { background: var(--pb-p-ring); color: var(--pb-tx); }
:focus-visible { outline: 2px solid var(--pb-p); outline-offset: 2px; border-radius: var(--pb-r-xs); }

h1,h2,h3,h4,h5,h6 { font-family: var(--pb-ff-display); font-weight: 700; letter-spacing: -.015em; color: var(--pb-tx); line-height: var(--pb-lh-snug); }

/* ==========================================================================
   Top bars and navigation
   ========================================================================== */

/* Standard brand gradient bar (inner app pages) */
.pb-topbar {
  background: var(--pb-p-grad);
  color: #fff;
  padding: 14px 28px;
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 2px 14px rgba(242,101,34,.22);
  display: flex; align-items: center; justify-content: space-between;
  backdrop-filter: blur(20px);
  gap: 16px;
}
.pb-topbar h1 { font-size: 17px; font-weight: 700; letter-spacing: -.3px; color: #fff; }
.pb-topbar a, .pb-topbar .pb-topbar-link {
  color: #fff; font-size: 13px; font-weight: 500; opacity: .88;
  transition: opacity var(--pb-t-fast);
  display: inline-flex; align-items: center; gap: 5px;
  padding: 6px 14px; border-radius: var(--pb-r-sm);
  border: 1px solid rgba(255,255,255,.28);
}
.pb-topbar a:hover { opacity: 1; background: rgba(255,255,255,.14); }
.pb-topbar-left  { display: flex; align-items: center; gap: 16px; }
.pb-topbar-right { display: flex; align-items: center; gap: 10px; }

/* Light neutral nav (marketing / dashboard pages) */
.pb-nav {
  background: rgba(255,255,255,.85);
  border-bottom: 1px solid var(--pb-border);
  position: sticky; top: 0; z-index: 100;
  height: var(--pb-nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 28px;
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
}
.pb-nav-brand {
  font-size: 16px; font-weight: 800; color: var(--pb-tx);
  display: flex; align-items: center; gap: 8px;
  letter-spacing: -.015em;
}
.pb-nav-brand .pb-nav-mark {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--pb-p-grad);
  color: #fff;
  display: grid; place-items: center;
  font-size: 15px;
  box-shadow: var(--pb-sh-p);
}
.pb-nav-links { display: flex; align-items: center; gap: 4px; }
.pb-nav-links a {
  padding: 8px 14px; font-size: 13px; font-weight: 500;
  color: var(--pb-tx-3); border-radius: var(--pb-r-sm);
  transition: all var(--pb-t-fast) var(--pb-ez);
}
.pb-nav-links a:hover { color: var(--pb-tx); background: var(--pb-surface-2); }
.pb-nav-links a.active { color: var(--pb-p); background: var(--pb-p-tint); }
.pb-nav-links a.pb-btn-primary,
.pb-nav-links a.pb-btn-primary:hover,
.pb-nav-links a.pb-btn-primary:focus { color: #fff; background: var(--pb-p-grad); }

/* ==========================================================================
   Layout
   ========================================================================== */
.pb-container    { max-width: var(--pb-container);    margin: 0 auto; padding: 24px 20px; }
.pb-container-md { max-width: var(--pb-container-md); margin: 0 auto; padding: 24px 20px; }
.pb-container-sm { max-width: var(--pb-container-sm); margin: 0 auto; padding: 24px 20px; }
.pb-container-xs { max-width: var(--pb-container-xs); margin: 0 auto; padding: 24px 20px; }

.pb-page-header { margin-bottom: 24px; }
.pb-page-header h1,
.pb-page-header h2 { font-size: var(--pb-fz-2xl); font-weight: 800; letter-spacing: -.02em; color: var(--pb-tx); }
.pb-page-header p { font-size: 13px; color: var(--pb-tx-3); margin-top: 4px; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.pb-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px;
  font-family: inherit; font-size: 14px; font-weight: 600; line-height: 1;
  border-radius: var(--pb-r-sm); border: none; cursor: pointer;
  text-decoration: none; white-space: nowrap;
  transition: all var(--pb-t-base) var(--pb-ez);
  user-select: none;
}
.pb-btn:disabled { opacity: .55; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

.pb-btn-primary { background: var(--pb-p-grad); color: #fff; box-shadow: var(--pb-sh-p); }
.pb-btn-primary:hover { box-shadow: var(--pb-sh-p-lg); transform: translateY(-1px); color: #fff; }
.pb-btn-primary:active { transform: translateY(0); }

.pb-btn-secondary {
  background: #fff; color: var(--pb-p);
  border: 1.5px solid var(--pb-p);
}
.pb-btn-secondary:hover { background: var(--pb-p-tint); color: var(--pb-p); }

.pb-btn-ghost { background: transparent; color: var(--pb-tx); border: 1px solid transparent; }
.pb-btn-ghost:hover { background: var(--pb-surface-2); }

.pb-btn-neutral {
  background: var(--pb-surface-2); color: var(--pb-tx);
  border: 1px solid var(--pb-border);
}
.pb-btn-neutral:hover { border-color: var(--pb-p); color: var(--pb-p); }

.pb-btn-dark {
  background: var(--pb-ink-2); color: #fff;
  border: 1px solid var(--pb-ink-3);
}
.pb-btn-dark:hover { background: var(--pb-ink); }

.pb-btn-sm { padding: 7px 12px; font-size: 12px; border-radius: var(--pb-r-xs); }
.pb-btn-lg { padding: 14px 24px; font-size: 15px; border-radius: var(--pb-r-md); }
.pb-btn-block { width: 100%; }

/* ==========================================================================
   Cards
   ========================================================================== */
.pb-card {
  background: var(--pb-card);
  border-radius: var(--pb-r-lg);
  border: 1px solid var(--pb-border-soft);
  box-shadow: var(--pb-sh-card);
  overflow: hidden;
  transition: box-shadow var(--pb-t-base) var(--pb-ez), transform var(--pb-t-base) var(--pb-ez);
}
.pb-card:hover { box-shadow: var(--pb-sh-3); }
.pb-card.pb-card-lift:hover { transform: translateY(-2px); box-shadow: var(--pb-sh-lift); }
.pb-card-head {
  padding: 18px 22px;
  border-bottom: 1px solid var(--pb-border-soft);
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
}
.pb-card-head h3 { font-size: 15px; font-weight: 700; color: var(--pb-tx); }
.pb-card-head .pb-sub { font-size: 12px; color: var(--pb-tx-3); margin-top: 3px; font-weight: 400; }
.pb-card-body { padding: 22px; }

/* Feature card with accent stripe */
.pb-card-accent {
  position: relative;
  border-left: 3px solid var(--pb-p);
}

/* ==========================================================================
   Forms
   ========================================================================== */
.pb-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.pb-form-row.pb-full { grid-template-columns: 1fr; }
.pb-form-row.pb-three { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 640px) {
  .pb-form-row, .pb-form-row.pb-three { grid-template-columns: 1fr; }
}
.pb-form-group { display: flex; flex-direction: column; gap: 5px; }
.pb-form-group label {
  font-size: 12px; font-weight: 600; color: var(--pb-tx-2);
  letter-spacing: .01em;
}
.pb-form-group label .pb-req { color: var(--pb-danger); font-weight: 700; }
.pb-input, .pb-select, .pb-textarea,
.pb-form-group input, .pb-form-group select, .pb-form-group textarea {
  padding: 10px 14px;
  font-family: inherit; font-size: 14px;
  background: #fff; color: var(--pb-tx);
  border: 1.5px solid var(--pb-border);
  border-radius: var(--pb-r-xs);
  width: 100%;
  transition: border-color var(--pb-t-fast), box-shadow var(--pb-t-fast);
}
.pb-textarea, .pb-form-group textarea { resize: vertical; min-height: 80px; }
.pb-input:focus, .pb-select:focus, .pb-textarea:focus,
.pb-form-group input:focus, .pb-form-group select:focus, .pb-form-group textarea:focus {
  outline: none;
  border-color: var(--pb-p);
  box-shadow: 0 0 0 3px var(--pb-p-ring);
}
.pb-form-group .pb-hint { font-size: 11px; color: var(--pb-tx-3); margin-top: 2px; }

/* Toggle switch */
.pb-switch { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
.pb-switch input { opacity: 0; width: 0; height: 0; }
.pb-switch .pb-slider {
  position: absolute; inset: 0;
  background: var(--pb-border-strong);
  border-radius: 24px; cursor: pointer;
  transition: background var(--pb-t-base) var(--pb-ez);
}
.pb-switch .pb-slider::before {
  content: ""; position: absolute;
  height: 18px; width: 18px; left: 3px; top: 3px;
  background: #fff; border-radius: 50%;
  transition: transform var(--pb-t-base) var(--pb-ez);
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.pb-switch input:checked + .pb-slider { background: var(--pb-p); }
.pb-switch input:checked + .pb-slider::before { transform: translateX(20px); }

/* ==========================================================================
   Badges
   ========================================================================== */
.pb-badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px;
  font-size: 11px; font-weight: 600; letter-spacing: .2px;
  border-radius: var(--pb-r-pill);
  background: var(--pb-surface-2); color: var(--pb-tx-2);
}
.pb-badge-p { background: var(--pb-p-tint); color: var(--pb-p-hover); }
.pb-badge-g { background: var(--pb-success-tint); color: var(--pb-success-ink); }
.pb-badge-y { background: var(--pb-warning-tint); color: var(--pb-warning-ink); }
.pb-badge-r { background: var(--pb-danger-tint); color: var(--pb-danger-ink); }
.pb-badge-b { background: var(--pb-info-tint); color: var(--pb-info-ink); }
.pb-badge-teal   { background: var(--pb-teal-tint);   color: var(--pb-teal); }
.pb-badge-indigo { background: var(--pb-indigo-tint); color: var(--pb-indigo); }
.pb-badge-dark   { background: var(--pb-ink); color: #fff; }

/* Status dot for lists and tabs */
.pb-dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.pb-dot.ok    { background: var(--pb-success); }
.pb-dot.warn  { background: var(--pb-warning); }
.pb-dot.err   { background: var(--pb-danger); }
.pb-dot.empty { background: var(--pb-tx-5); }
.pb-dot.live  { background: var(--pb-success); box-shadow: 0 0 0 0 rgba(16,185,129,.5); animation: pbPulse 2s infinite; }
@keyframes pbPulse { 0%,100%{opacity:1}50%{opacity:.35} }

/* ==========================================================================
   Tables
   ========================================================================== */
.pb-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.pb-table th {
  text-align: left; font-weight: 600;
  color: var(--pb-tx-3); font-size: 11px;
  text-transform: uppercase; letter-spacing: .05em;
  background: var(--pb-surface-3);
  padding: 10px 14px;
  border-bottom: 1px solid var(--pb-border);
}
.pb-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--pb-border-soft);
  color: var(--pb-tx);
}
.pb-table tr:last-child td { border-bottom: none; }
.pb-table tr:hover td { background: var(--pb-surface-3); }

/* ==========================================================================
   Toast
   ========================================================================== */
.pb-toast {
  position: fixed; bottom: 24px; right: 24px;
  background: #fff; color: var(--pb-tx);
  padding: 14px 20px;
  border-radius: var(--pb-r-md);
  border: 1px solid var(--pb-border);
  border-left: 4px solid var(--pb-success);
  box-shadow: var(--pb-sh-4);
  font-size: 13px; font-weight: 500;
  z-index: 9999;
  transform: translateY(80px); opacity: 0;
  transition: all var(--pb-t-slow) var(--pb-ez);
  pointer-events: none;
  max-width: 380px;
}
.pb-toast.show { transform: translateY(0); opacity: 1; }
.pb-toast.err { border-left-color: var(--pb-danger); }
.pb-toast.warn { border-left-color: var(--pb-warning); }
.pb-toast.info { border-left-color: var(--pb-info); }

/* ==========================================================================
   KPI / stat cards
   ========================================================================== */
.pb-kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.pb-kpi {
  background: var(--pb-card);
  border: 1px solid var(--pb-border-soft);
  border-radius: var(--pb-r-lg);
  padding: 20px 22px;
  position: relative; overflow: hidden;
  box-shadow: var(--pb-sh-card);
  transition: transform var(--pb-t-base) var(--pb-ez), box-shadow var(--pb-t-base) var(--pb-ez);
}
.pb-kpi:hover { transform: translateY(-2px); box-shadow: var(--pb-sh-3); }
.pb-kpi::after {
  content: ""; position: absolute; inset: 0 auto 0 0;
  width: 3px; background: var(--pb-p);
  opacity: 0; transition: opacity var(--pb-t-base);
}
.pb-kpi:hover::after { opacity: 1; }
.pb-kpi-label { font-size: 11px; font-weight: 600; color: var(--pb-tx-3); text-transform: uppercase; letter-spacing: .06em; }
.pb-kpi-value { font-size: 28px; font-weight: 800; color: var(--pb-tx); margin-top: 6px; letter-spacing: -.02em; }
.pb-kpi-trend { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 600; margin-top: 6px; }
.pb-kpi-trend.up { color: var(--pb-success); }
.pb-kpi-trend.down { color: var(--pb-danger); }
.pb-kpi-sub { font-size: 11px; color: var(--pb-tx-3); margin-top: 4px; }

/* ==========================================================================
   Tabs
   ========================================================================== */
.pb-tabs {
  display: flex; gap: 0;
  border-bottom: 2px solid var(--pb-border);
  margin-bottom: 24px;
  overflow-x: auto;
  flex-wrap: wrap;
}
.pb-tab {
  padding: 10px 16px;
  font-size: 12px; font-weight: 600;
  color: var(--pb-tx-3);
  border: none; background: none; cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: all var(--pb-t-base) var(--pb-ez);
  display: flex; align-items: center; gap: 6px;
}
.pb-tab:hover { color: var(--pb-tx); background: var(--pb-surface-3); }
.pb-tab.active { color: var(--pb-p); border-bottom-color: var(--pb-p); }

/* ==========================================================================
   Alerts / banners
   ========================================================================== */
.pb-alert {
  padding: 12px 16px;
  border-radius: var(--pb-r-sm);
  font-size: 13px; font-weight: 500;
  display: flex; align-items: flex-start; gap: 10px;
  border: 1px solid;
  margin-bottom: 16px;
}
.pb-alert-info    { background: var(--pb-info-tint);    border-color: rgba(59,130,246,.25);  color: var(--pb-info-ink); }
.pb-alert-success { background: var(--pb-success-tint); border-color: rgba(16,185,129,.25);  color: var(--pb-success-ink); }
.pb-alert-warn    { background: var(--pb-warning-tint); border-color: rgba(245,158,11,.28);  color: var(--pb-warning-ink); }
.pb-alert-danger  { background: var(--pb-danger-tint);  border-color: rgba(239,68,68,.25);   color: var(--pb-danger-ink); }
.pb-alert-brand   { background: var(--pb-p-tint);       border-color: var(--pb-p-ring);      color: var(--pb-p-hover); }

/* ==========================================================================
   Hero (for marketing pages)
   ========================================================================== */
.pb-hero {
  position: relative;
  background:
    radial-gradient(1200px 500px at 90% -10%, rgba(242,101,34,.10), transparent 60%),
    radial-gradient(900px 400px at -10% 110%, rgba(99,102,241,.08), transparent 60%),
    var(--pb-bg);
  padding: clamp(48px, 7vw, 96px) 24px;
  overflow: hidden;
}
.pb-hero-dark {
  background:
    radial-gradient(1200px 500px at 90% -10%, rgba(242,101,34,.28), transparent 60%),
    var(--pb-ink-grad);
  color: #fff;
}
.pb-hero-title {
  font-size: var(--pb-fz-5xl);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.05;
  max-width: 22ch;
}
.pb-hero-title .pb-hl {
  background: var(--pb-p-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.pb-hero-sub {
  margin-top: 18px;
  font-size: 18px;
  color: var(--pb-tx-2);
  line-height: 1.6;
  max-width: 62ch;
}
.pb-hero-dark .pb-hero-sub { color: rgba(255,255,255,.78); }

/* ==========================================================================
   Dividers & meta
   ========================================================================== */
.pb-divider { border: none; border-top: 1px solid var(--pb-border-soft); margin: 18px 0; }
.pb-meta    { font-size: 11px; color: var(--pb-tx-4); }

/* ==========================================================================
   Utilities
   ========================================================================== */
.pb-text-center { text-align: center; }
.pb-text-muted  { color: var(--pb-tx-3); }
.pb-text-soft   { color: var(--pb-tx-4); }
.pb-stack  { display: flex; flex-direction: column; gap: 12px; }
.pb-stack-sm { display: flex; flex-direction: column; gap: 6px; }
.pb-stack-lg { display: flex; flex-direction: column; gap: 20px; }
.pb-row    { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.pb-row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.pb-spacer { flex: 1; }
.pb-mt-0{margin-top:0}.pb-mt-2{margin-top:8px}.pb-mt-4{margin-top:16px}.pb-mt-6{margin-top:24px}.pb-mt-8{margin-top:32px}
.pb-mb-0{margin-bottom:0}.pb-mb-2{margin-bottom:8px}.pb-mb-4{margin-bottom:16px}.pb-mb-6{margin-bottom:24px}.pb-mb-8{margin-bottom:32px}

/* ==========================================================================
   Scrollbar (subtle)
   ========================================================================== */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--pb-border-strong); border-radius: 10px; border: 2px solid transparent; background-clip: padding-box; }
*::-webkit-scrollbar-thumb:hover { background: var(--pb-tx-4); background-clip: padding-box; border: 2px solid transparent; }

/* ==========================================================================
   Motion preferences
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ==========================================================================
   Small screens
   ========================================================================== */
@media (max-width: 640px) {
  .pb-topbar, .pb-nav { padding: 12px 18px; }
  .pb-container, .pb-container-md, .pb-container-sm, .pb-container-xs { padding: 18px 14px; }
}

/* ==========================================================================
   Active nav link indicator (shared across .pb-nav-links and .nav-links)
   ========================================================================== */
.pb-nav-links a.nav-active,
.pb-nav-links a.active {
  color: #F26522 !important;
  font-weight: 700 !important;
}
.nav-links a.nav-active {
  color: #F26522 !important;
  font-weight: 700 !important;
}