/* =====================================================================
   TrackForge AI — Design System
   Premium dark SaaS theme. Hand-built, zero framework dependency.
   ===================================================================== */

:root {
  --bg: #0a0e17;
  --bg-elevated: #10151f;
  --bg-card: #131a27;
  --bg-card-hover: #171f2e;
  --bg-input: #0d1320;
  --border: #232b3d;
  --border-light: #2c3549;
  --text: #eef1fa;
  --text-muted: #9aa3bd;
  --text-faint: #676f8c;
  --brand: #6f7bff;
  --brand-2: #9b7bff;
  --brand-soft: rgba(111, 123, 255, 0.14);
  --accent-cyan: #35d6c4;
  --accent-pink: #ff6fa8;
  --success: #2fd888;
  --success-soft: rgba(47, 216, 136, 0.14);
  --warning: #ffb648;
  --warning-soft: rgba(255, 182, 72, 0.14);
  --danger: #ff5f6d;
  --danger-soft: rgba(255, 95, 109, 0.14);
  --info: #4fb2ff;
  --info-soft: rgba(79, 178, 255, 0.14);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-card: 0 1px 0 rgba(255,255,255,0.02) inset, 0 10px 30px -14px rgba(0,0,0,0.6);
  --shadow-pop: 0 20px 60px -20px rgba(0,0,0,0.7);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --sidebar-w: 264px;
  --topbar-h: 68px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1,h2,h3,h4,h5 { margin: 0 0 8px; font-weight: 700; letter-spacing: -0.01em; line-height: 1.2; }
p { margin: 0 0 12px; color: var(--text-muted); }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; }
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.hidden { display: none !important; }
.text-muted { color: var(--text-muted); }
.text-faint { color: var(--text-faint); }
.mono { font-family: var(--font-mono); }
.mt-0{margin-top:0}.mb-0{margin-bottom:0}.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}.mb-8{margin-bottom:8px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px; border-radius: 10px; border: 1px solid transparent;
  font-size: 14px; font-weight: 600; cursor: pointer; transition: all .15s ease;
  white-space: nowrap;
}
.btn-primary { background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; box-shadow: 0 8px 20px -8px rgba(111,123,255,0.6); }
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn-secondary { background: var(--bg-card); color: var(--text); border-color: var(--border-light); }
.btn-secondary:hover { background: var(--bg-card-hover); border-color: var(--brand); }
.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-ghost:hover { color: var(--text); background: var(--bg-card); }
.btn-danger { background: var(--danger-soft); color: var(--danger); border-color: rgba(255,95,109,0.3); }
.btn-success { background: var(--success-soft); color: var(--success); border-color: rgba(47,216,136,0.3); }
.btn-sm { padding: 7px 14px; font-size: 13px; border-radius: 8px; }
.btn-lg { padding: 14px 28px; font-size: 15.5px; border-radius: 12px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }
.btn-icon { padding: 8px; border-radius: 8px; }

/* ---------- Cards ---------- */
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-card); padding: 24px; }
.card-flush { padding: 0; overflow: hidden; }
.card-header { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; border-bottom: 1px solid var(--border); }
.card-body { padding: 22px; }
.card-title { font-size: 15px; font-weight: 700; margin: 0; }
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1000px) { .grid-4 { grid-template-columns: repeat(2, 1fr);} .grid-3 { grid-template-columns: repeat(2, 1fr);} }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* ---------- Stat tiles ---------- */
.stat-tile { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 22px; }
.stat-tile .stat-label { font-size: 12.5px; color: var(--text-faint); text-transform: uppercase; letter-spacing: .06em; font-weight: 600; margin-bottom: 10px; }
.stat-tile .stat-value { font-size: 30px; font-weight: 800; letter-spacing: -0.02em; }
.stat-tile .stat-sub { font-size: 12.5px; color: var(--text-muted); margin-top: 6px; }
.stat-tile .stat-icon { width: 38px; height: 38px; border-radius: 10px; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; font-size: 18px; }

/* ---------- Badges ---------- */
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; border-radius: 999px; font-size: 12px; font-weight: 700; letter-spacing: .01em; }
.badge-success { background: var(--success-soft); color: var(--success); }
.badge-warning { background: var(--warning-soft); color: var(--warning); }
.badge-danger { background: var(--danger-soft); color: var(--danger); }
.badge-info { background: var(--info-soft); color: var(--info); }
.badge-muted { background: rgba(255,255,255,0.06); color: var(--text-muted); }
.badge-brand { background: var(--brand-soft); color: #a8b0ff; }
.badge-demo { background: linear-gradient(135deg, var(--accent-pink), var(--brand-2)); color: #fff; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
table.tf-table { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 640px; }
table.tf-table th { text-align: left; padding: 12px 16px; background: var(--bg-elevated); color: var(--text-faint); font-weight: 700; text-transform: uppercase; font-size: 11px; letter-spacing: .06em; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.tf-table td { padding: 13px 16px; border-bottom: 1px solid var(--border); color: var(--text); vertical-align: middle; }
table.tf-table tr:last-child td { border-bottom: none; }
table.tf-table tbody tr:hover { background: rgba(255,255,255,0.02); }

/* ---------- Forms ---------- */
label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 7px; color: var(--text-muted); }
.form-group { margin-bottom: 18px; }
.form-row { display: flex; gap: 16px; }
.form-row > * { flex: 1; }
@media (max-width: 640px) { .form-row { flex-direction: column; gap: 0; } }
input[type=text], input[type=email], input[type=password], input[type=tel], input[type=url], input[type=number], input[type=search], select, textarea {
  width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border-light);
  background: var(--bg-input); color: var(--text); font-size: 14px; font-family: inherit; transition: border-color .15s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-soft); }
textarea { resize: vertical; min-height: 90px; }
.form-hint { font-size: 12.5px; color: var(--text-faint); margin-top: 6px; }
.form-error { font-size: 12.5px; color: var(--danger); margin-top: 6px; }
.checkbox-row { display: flex; align-items: flex-start; gap: 10px; font-size: 13.5px; color: var(--text-muted); }
.checkbox-row input { width: 16px; height: 16px; margin-top: 3px; accent-color: var(--brand); }
.select-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px,1fr)); gap: 10px; }
.select-card { border: 1px solid var(--border-light); background: var(--bg-input); border-radius: 10px; padding: 12px 14px; cursor: pointer; font-size: 13.5px; display: flex; align-items: center; gap: 10px; transition: all .12s; }
.select-card:hover { border-color: var(--brand); }
.select-card.active { border-color: var(--brand); background: var(--brand-soft); color: #cfd4ff; }
.select-card input { accent-color: var(--brand); }

/* ---------- Alerts / toasts ---------- */
.alert { padding: 13px 16px; border-radius: 10px; font-size: 13.5px; margin-bottom: 18px; border: 1px solid transparent; }
.alert-success { background: var(--success-soft); color: var(--success); border-color: rgba(47,216,136,.3); }
.alert-danger { background: var(--danger-soft); color: var(--danger); border-color: rgba(255,95,109,.3); }
.alert-warning { background: var(--warning-soft); color: var(--warning); border-color: rgba(255,182,72,.3); }
.alert-info { background: var(--info-soft); color: var(--info); border-color: rgba(79,178,255,.3); }

#toast-region { position: fixed; top: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 10px; }
.toast { background: var(--bg-elevated); border: 1px solid var(--border-light); box-shadow: var(--shadow-pop); border-radius: 10px; padding: 13px 16px; font-size: 13.5px; min-width: 260px; animation: toast-in .2s ease; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-8px);} to {opacity:1; transform:none;} }

/* ---------- Progress ---------- */
.progress { height: 8px; border-radius: 999px; background: rgba(255,255,255,0.06); overflow: hidden; }
.progress > div { height: 100%; background: linear-gradient(90deg, var(--brand), var(--accent-cyan)); border-radius: 999px; transition: width .3s ease; }
.progress-lg { height: 12px; }

/* ---------- Stepper ---------- */
.stepper { display: flex; align-items: center; gap: 0; margin-bottom: 32px; flex-wrap: wrap; }
.step { display: flex; align-items: center; gap: 10px; }
.step-num { width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; background: var(--bg-card); border: 1px solid var(--border-light); color: var(--text-faint); }
.step.active .step-num { background: var(--brand); border-color: var(--brand); color: #fff; }
.step.done .step-num { background: var(--success); border-color: var(--success); color: #06251a; }
.step-label { font-size: 13px; color: var(--text-faint); font-weight: 600; }
.step.active .step-label, .step.done .step-label { color: var(--text); }
.step-line { width: 40px; height: 1px; background: var(--border-light); margin: 0 10px; }

/* ---------- Sidebar layout ---------- */
.app-shell { display: flex; min-height: 100vh; }
.sidebar { width: var(--sidebar-w); background: var(--bg-elevated); border-right: 1px solid var(--border); position: fixed; top: 0; bottom: 0; left: 0; overflow-y: auto; z-index: 40; transition: transform .2s ease; }
.sidebar-brand { display: flex; align-items: center; gap: 10px; padding: 22px 22px 18px; font-weight: 800; font-size: 16.5px; letter-spacing: -0.01em; }
.sidebar-brand img, .sidebar-brand svg { width: 30px; height: 30px; }
.sidebar-section { padding: 6px 16px; font-size: 10.5px; text-transform: uppercase; letter-spacing: .08em; color: var(--text-faint); font-weight: 700; margin-top: 18px; }
.sidebar-nav a { display: flex; align-items: center; gap: 11px; padding: 10px 16px; margin: 2px 10px; border-radius: 9px; font-size: 13.5px; font-weight: 600; color: var(--text-muted); }
.sidebar-nav a:hover { background: var(--bg-card); color: var(--text); }
.sidebar-nav a.active { background: var(--brand-soft); color: #b6bcff; }
.sidebar-nav .nav-icon { width: 18px; text-align: center; opacity: .85; }
.sidebar-foot { position: sticky; bottom: 0; background: var(--bg-elevated); padding: 14px 16px; border-top: 1px solid var(--border); margin-top: 20px; }

.main-area { margin-left: var(--sidebar-w); flex: 1; min-width: 0; }
.topbar { height: var(--topbar-h); border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; padding: 0 28px; position: sticky; top: 0; background: rgba(10,14,23,0.85); backdrop-filter: blur(10px); z-index: 30; }
.topbar-title { font-size: 17px; font-weight: 700; }
.page-wrap { padding: 28px; max-width: 1320px; }
.menu-toggle { display: none; background: var(--bg-card); border: 1px solid var(--border-light); border-radius: 8px; width: 36px; height: 36px; color: var(--text); }

@media (max-width: 980px) {
  .sidebar { transform: translateX(-100%); box-shadow: var(--shadow-pop); }
  .sidebar.open { transform: translateX(0); }
  .main-area { margin-left: 0; }
  .menu-toggle { display: flex; align-items: center; justify-content: center; }
}

/* ---------- User chip ---------- */
.user-chip { display: flex; align-items: center; gap: 10px; }
.avatar { width: 34px; height: 34px; border-radius: 50%; background: linear-gradient(135deg, var(--brand), var(--accent-cyan)); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px; color: #fff; }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 24px; overflow-x: auto; }
.tabs a { padding: 12px 16px; font-size: 13.5px; font-weight: 600; color: var(--text-faint); border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs a:hover { color: var(--text); }
.tabs a.active { color: var(--brand); border-color: var(--brand); }

/* ---------- Empty / loading states ---------- */
.empty-state { text-align: center; padding: 56px 24px; color: var(--text-muted); }
.empty-state .empty-icon { font-size: 38px; margin-bottom: 14px; opacity: .7; }
.empty-state h3 { color: var(--text); font-size: 16px; }
.skeleton { background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 37%, var(--bg-card) 63%); background-size: 400% 100%; animation: sk 1.4s ease infinite; border-radius: 8px; }
@keyframes sk { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }
.spinner { width: 18px; height: 18px; border: 2.5px solid rgba(255,255,255,0.2); border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Modal ---------- */
.modal-backdrop { position: fixed; inset: 0; background: rgba(4,6,12,0.7); display: flex; align-items: center; justify-content: center; z-index: 1000; padding: 20px; }
.modal { background: var(--bg-elevated); border: 1px solid var(--border-light); border-radius: var(--radius-lg); max-width: 560px; width: 100%; box-shadow: var(--shadow-pop); max-height: 88vh; overflow-y: auto; }
.modal-header { padding: 20px 24px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-body { padding: 22px 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

/* ---------- Code blocks ---------- */
pre.code-block { background: #070a11; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; overflow-x: auto; font-family: var(--font-mono); font-size: 12.8px; line-height: 1.65; color: #c9e6ff; }
pre.code-block .k { color: #ff9bd6; } pre.code-block .s { color: #a8f0c6; } pre.code-block .n { color: #ffcf8b; }

/* ---------- Funnel ---------- */
.funnel-step { display: flex; align-items: center; gap: 14px; padding: 14px 16px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg-card); margin-bottom: 8px; }
.funnel-step .funnel-icon { width: 30px; height: 30px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-weight: 800; flex-shrink: 0; }
.funnel-step.ok .funnel-icon { background: var(--success-soft); color: var(--success); }
.funnel-step.missing .funnel-icon { background: var(--danger-soft); color: var(--danger); }
.funnel-arrow { text-align: center; color: var(--text-faint); font-size: 13px; padding: 2px 0; }

/* ---------- Screen map ---------- */
.screenmap-node { display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px; border-radius: 10px; background: var(--bg-card); border: 1px solid var(--border-light); font-size: 13px; font-weight: 600; }
.screenmap-flow { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.screenmap-flow .arrow { color: var(--text-faint); }

/* ---------- Landing page ---------- */
.nav-public { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; }
.nav-public .links { display: flex; gap: 28px; align-items: center; }
.nav-public .links a { font-size: 14px; font-weight: 600; color: var(--text-muted); }
.nav-public .links a:hover { color: var(--text); }
.hero { padding: 90px 0 70px; text-align: center; }
.hero .eyebrow { display: inline-block; padding: 6px 16px; border-radius: 999px; background: var(--brand-soft); color: #b6bcff; font-size: 12.5px; font-weight: 700; margin-bottom: 22px; }
.hero h1 { font-size: clamp(32px, 5vw, 56px); max-width: 900px; margin: 0 auto 20px; background: linear-gradient(135deg, #fff, #b7bdea); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero .sub { font-size: 17px; max-width: 640px; margin: 0 auto 32px; color: var(--text-muted); }
.hero .cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.section { padding: 76px 0; border-top: 1px solid var(--border); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 46px; }
.section-head .eyebrow { color: var(--brand); font-weight: 700; font-size: 12.5px; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 10px; display: block; }
.feature-card { padding: 26px; border-radius: var(--radius); background: var(--bg-card); border: 1px solid var(--border); transition: transform .15s, border-color .15s; }
.feature-card:hover { transform: translateY(-3px); border-color: var(--border-light); }
.feature-card .fi { width: 44px; height: 44px; border-radius: 12px; background: var(--brand-soft); display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 16px; }
.platform-pill { display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px; border-radius: 999px; background: var(--bg-card); border: 1px solid var(--border); font-size: 13px; font-weight: 600; margin: 5px; }
.pricing-card { max-width: 380px; margin: 0 auto; padding: 40px 34px; border-radius: var(--radius-lg); background: linear-gradient(180deg, var(--bg-card), var(--bg-elevated)); border: 1px solid var(--border-light); text-align: center; position: relative; }
.pricing-card .price { font-size: 48px; font-weight: 800; margin: 14px 0 4px; }
.pricing-card .price span { font-size: 15px; color: var(--text-faint); font-weight: 600; }
.pricing-card ul { text-align: left; margin: 26px 0; }
.pricing-card li { display: flex; gap: 10px; padding: 7px 0; font-size: 13.5px; color: var(--text-muted); align-items: flex-start; }
.faq-item { border-bottom: 1px solid var(--border); padding: 18px 0; }
.faq-item summary { cursor: pointer; font-weight: 700; font-size: 14.5px; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.footer { border-top: 1px solid var(--border); padding: 46px 0 30px; color: var(--text-faint); font-size: 13px; }
.footer .cols { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 32px; margin-bottom: 30px; }
.footer h5 { color: var(--text); font-size: 13px; margin-bottom: 12px; }
.footer a { color: var(--text-faint); display: block; padding: 5px 0; }
.footer a:hover { color: var(--text); }

/* ---------- Print (QA / project reports) ---------- */
@media print {
  .sidebar, .topbar, .no-print { display: none !important; }
  .main-area { margin-left: 0 !important; }
  body { background: #fff; color: #111; }
  .card { border: 1px solid #ccc; box-shadow: none; }
}

/* ---------- Datalayer explorer ---------- */
.dl-tree { font-family: var(--font-mono); font-size: 13px; }
.dl-row { display: flex; padding: 5px 0; border-bottom: 1px dashed var(--border); }
.dl-key { color: #8bc9ff; width: 34%; }
.dl-val { color: #a8f0c6; width: 34%; }
.dl-type { color: var(--text-faint); width: 16%; }
.dl-desc { color: var(--text-muted); flex: 1; }