/* AdPilot — SaaS styles */
:root {
  --primary: #2563EB; --primary-hover: #1D4ED8; --primary-light: #EFF6FF;
  --dark: #0F172A; --muted: #64748B; --border: #E2E8F0;
  --success: #10B981; --warning: #F59E0B; --danger: #EF4444;
  --bg: #F8FAFC; --card: #FFFFFF;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--dark); line-height: 1.5; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.container-sm { max-width: 480px; margin: 0 auto; padding: 0 1.5rem; }

/* Typography */
h1 { font-size: 2.5rem; font-weight: 700; line-height: 1.2; }
h2 { font-size: 1.875rem; font-weight: 600; line-height: 1.3; }
h3 { font-size: 1.25rem; font-weight: 600; }
p { color: var(--muted); line-height: 1.6; }
.text-sm { font-size: 0.875rem; color: var(--muted); }
.text-xs { font-size: 0.75rem; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.625rem 1.25rem; border-radius: 0.5rem; font-weight: 500; font-size: 0.9375rem; border: none; cursor: pointer; transition: all 0.15s; text-decoration: none; }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: white; color: var(--dark); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg); }
.btn-ghost { background: transparent; color: var(--muted); }
.btn-ghost:hover { background: var(--bg); color: var(--dark); }
.btn-lg { padding: 0.875rem 2rem; font-size: 1rem; border-radius: 0.625rem; }
.btn-sm { padding: 0.375rem 0.875rem; font-size: 0.875rem; }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #DC2626; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Cards */
.card { background: var(--card); border-radius: 0.75rem; border: 1px solid var(--border); box-shadow: 0 1px 3px rgba(0,0,0,0.04); }
.card-pad { padding: 1.5rem; }
.card-header { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.card-body { padding: 1.5rem; }

/* Nav */
.nav { background: white; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 0.875rem 1.5rem; max-width: 1200px; margin: 0 auto; }
.nav-logo { font-size: 1.25rem; font-weight: 700; color: var(--dark); display: flex; align-items: center; gap: 0.5rem; }
.nav-logo span { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 0.5rem; }
.nav-link { color: var(--muted); font-size: 0.9375rem; padding: 0.375rem 0.75rem; border-radius: 0.375rem; transition: all 0.15s; }
.nav-link:hover { color: var(--dark); background: var(--bg); text-decoration: none; }
.nav-badge { background: #DCFCE7; color: #166534; font-size: 0.75rem; padding: 0.125rem 0.5rem; border-radius: 9999px; font-weight: 500; }

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: 0.875rem; font-weight: 500; color: var(--dark); margin-bottom: 0.375rem; }
.form-input { width: 100%; padding: 0.625rem 0.875rem; border: 1px solid var(--border); border-radius: 0.5rem; font-size: 0.9375rem; transition: all 0.15s; background: white; }
.form-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.form-input.error { border-color: var(--danger); }
.form-error { font-size: 0.8125rem; color: var(--danger); margin-top: 0.25rem; }
.form-hint { font-size: 0.8125rem; color: var(--muted); margin-top: 0.25rem; }

/* Select */
.form-select { width: 100%; padding: 0.625rem 0.875rem; border: 1px solid var(--border); border-radius: 0.5rem; font-size: 0.9375rem; background: white; cursor: pointer; }
.form-select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }

/* Badges */
.badge { display: inline-flex; align-items: center; padding: 0.25rem 0.625rem; border-radius: 9999px; font-size: 0.75rem; font-weight: 500; }
.badge-active { background: #DCFCE7; color: #166534; }
.badge-paused { background: #FEF3C7; color: #92400E; }
.badge-pending { background: #F3F4F6; color: #6B7280; }
.badge-learning { background: #EDE9FE; color: #5B21B6; }
.badge-error { background: #FEE2E2; color: #991B1B; }
.badge-trialing { background: #DBEAFE; color: #1E40AF; }

/* Stats grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
.stat-card { background: white; border: 1px solid var(--border); border-radius: 0.75rem; padding: 1.25rem; }
.stat-label { font-size: 0.8125rem; color: var(--muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.03em; margin-bottom: 0.375rem; }
.stat-value { font-size: 1.75rem; font-weight: 700; color: var(--dark); }
.stat-sub { font-size: 0.8125rem; color: var(--muted); margin-top: 0.125rem; }
.stat-positive { color: var(--success); }
.stat-negative { color: var(--danger); }

/* Tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 0.75rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; padding: 0.75rem 1rem; border-bottom: 1px solid var(--border); }
td { padding: 1rem; font-size: 0.9375rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg); }
.td-mono { font-variant-numeric: tabular-nums; }

/* Landing page */
.landing-nav { display: flex; align-items: center; justify-content: space-between; padding: 1.25rem 2rem; max-width: 1200px; margin: 0 auto; }
.landing-nav-links { display: flex; align-items: center; gap: 1.5rem; }
.landing-nav-link { color: var(--muted); font-size: 0.9375rem; }
.landing-nav-link:hover { color: var(--dark); text-decoration: none; }

.hero { text-align: center; padding: 5rem 1.5rem 4rem; max-width: 800px; margin: 0 auto; }
.hero h1 { font-size: 3rem; margin-bottom: 1.25rem; }
.hero p { font-size: 1.125rem; max-width: 560px; margin: 0 auto 2rem; }
.hero-actions { display: flex; align-items: center; justify-content: center; gap: 1rem; flex-wrap: wrap; }
.hero-trust { margin-top: 3rem; display: flex; align-items: center; justify-content: center; gap: 2rem; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 0.5rem; font-size: 0.875rem; color: var(--muted); }

.section { padding: 4rem 0; }
.section-sm { padding: 2rem 0; }
.section-title { text-align: center; margin-bottom: 0.75rem; }
.section-sub { text-align: center; max-width: 560px; margin: 0 auto 3rem; font-size: 1.0625rem; }

.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.feature-card { background: white; border: 1px solid var(--border); border-radius: 0.75rem; padding: 1.75rem; }
.feature-icon { width: 3rem; height: 3rem; background: var(--primary-light); border-radius: 0.625rem; display: flex; align-items: center; justify-content: center; margin-bottom: 1rem; font-size: 1.5rem; }
.feature-title { font-size: 1.0625rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--dark); }
.feature-desc { font-size: 0.9375rem; }

.how-it-works { background: white; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 2rem; }
@media (max-width: 640px) { .steps { grid-template-columns: 1fr; } }
.step { text-align: center; }
.step-number { width: 2.5rem; height: 2.5rem; background: var(--primary); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; margin: 0 auto 1rem; font-size: 1.125rem; }
.step-title { font-weight: 600; margin-bottom: 0.375rem; }
.step-desc { font-size: 0.9375rem; color: var(--muted); }

.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; max-width: 600px; margin: 0 auto; }
.pricing-card { background: white; border: 2px solid var(--border); border-radius: 1rem; padding: 2.5rem; text-align: center; }
.pricing-card.popular { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(37,99,235,0.08); }
.pricing-popular-badge { display: inline-block; background: var(--primary); color: white; font-size: 0.75rem; font-weight: 600; padding: 0.25rem 0.75rem; border-radius: 9999px; margin-bottom: 1rem; }
.pricing-price { font-size: 3rem; font-weight: 700; color: var(--dark); }
.pricing-price span { font-size: 1rem; font-weight: 400; color: var(--muted); }
.pricing-features { list-style: none; margin: 1.5rem 0 2rem; text-align: left; }
.pricing-feature { display: flex; align-items: flex-start; gap: 0.75rem; padding: 0.5rem 0; font-size: 0.9375rem; color: var(--muted); }
.pricing-feature::before { content: '✓'; color: var(--success); font-weight: 700; flex-shrink: 0; margin-top: 0.125rem; }

.faq-list { max-width: 640px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); padding: 1.25rem 0; }
.faq-q { font-weight: 600; font-size: 1rem; color: var(--dark); margin-bottom: 0.5rem; cursor: pointer; }
.faq-a { font-size: 0.9375rem; color: var(--muted); line-height: 1.6; }

.testimonials { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.testimonial { background: white; border: 1px solid var(--border); border-radius: 0.75rem; padding: 1.5rem; }
.testimonial-quote { font-size: 0.9375rem; color: var(--dark); line-height: 1.6; margin-bottom: 1rem; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 0.75rem; }
.testimonial-avatar { width: 2.5rem; height: 2.5rem; border-radius: 50%; background: var(--primary-light); display: flex; align-items: center; justify-content: center; font-weight: 600; color: var(--primary); font-size: 0.875rem; }
.testimonial-name { font-weight: 600; font-size: 0.875rem; }
.testimonial-role { font-size: 0.8125rem; color: var(--muted); }

.footer { background: var(--dark); color: white; padding: 3rem 0 2rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 2rem; }
@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-brand { font-size: 1.25rem; font-weight: 700; margin-bottom: 0.75rem; }
.footer-desc { color: #94A3B8; font-size: 0.875rem; line-height: 1.6; }
.footer-title { font-size: 0.875rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 1rem; color: #94A3B8; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a { color: white; font-size: 0.875rem; opacity: 0.8; }
.footer-links a:hover { opacity: 1; text-decoration: none; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 1.5rem; display: flex; justify-content: space-between; align-items: center; font-size: 0.8125rem; color: #94A3B8; flex-wrap: wrap; gap: 0.5rem; }

/* Dashboard */
.dashboard-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 1rem; }
.dashboard-title { font-size: 1.5rem; font-weight: 700; }
.page-title { font-size: 1.25rem; font-weight: 600; margin-bottom: 1.5rem; }
.page-subtitle { font-size: 0.9375rem; color: var(--muted); margin-bottom: 1.5rem; }

/* Campaign list */
.campaign-row-name { font-weight: 600; color: var(--dark); }
.campaign-row-id { font-size: 0.8125rem; color: var(--muted); font-family: monospace; }

/* Charts placeholder */
.chart-placeholder { background: linear-gradient(135deg, #F1F5F9 0%, #E2E8F0 100%); border-radius: 0.5rem; height: 200px; display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 0.875rem; }

/* AI Activity feed */
.ai-feed { display: flex; flex-direction: column; gap: 0.75rem; }
.ai-feed-item { display: flex; gap: 0.75rem; padding: 0.875rem; border-radius: 0.5rem; background: var(--bg); border: 1px solid var(--border); }
.ai-feed-icon { width: 2rem; height: 2rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.875rem; flex-shrink: 0; }
.ai-feed-icon.pause { background: #FEE2E2; color: var(--danger); }
.ai-feed-icon.adjust { background: #DBEAFE; color: var(--primary); }
.ai-feed-icon.create { background: #DCFCE7; color: var(--success); }
.ai-feed-content { flex: 1; }
.ai-feed-title { font-size: 0.875rem; font-weight: 600; color: var(--dark); }
.ai-feed-reason { font-size: 0.8125rem; color: var(--muted); margin-top: 0.125rem; }
.ai-feed-time { font-size: 0.75rem; color: var(--muted); margin-top: 0.25rem; }

/* Auth pages */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 2rem 1rem; }
.auth-card { background: white; border-radius: 1rem; border: 1px solid var(--border); padding: 2.5rem; width: 100%; max-width: 420px; box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.auth-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 0.375rem; }
.auth-sub { font-size: 0.9375rem; color: var(--muted); margin-bottom: 2rem; }
.auth-footer { text-align: center; margin-top: 1.5rem; font-size: 0.9375rem; color: var(--muted); }

/* Onboarding */
.onboarding-progress { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 2rem; }
.onboarding-step { display: flex; align-items: center; gap: 0.5rem; }
.onboarding-step-num { width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.8125rem; font-weight: 600; }
.onboarding-step-num.done { background: var(--success); color: white; }
.onboarding-step-num.active { background: var(--primary); color: white; }
.onboarding-step-num.pending { background: var(--border); color: var(--muted); }
.onboarding-step-label { font-size: 0.875rem; color: var(--muted); font-weight: 500; }
.onboarding-step-label.active { color: var(--dark); }
.onboarding-connector { flex: 1; height: 2px; background: var(--border); max-width: 3rem; }

/* Alert/Notice */
.alert { padding: 0.875rem 1rem; border-radius: 0.5rem; font-size: 0.875rem; margin-bottom: 1rem; display: flex; align-items: flex-start; gap: 0.75rem; }
.alert-success { background: #DCFCE7; color: #166534; border: 1px solid #BBF7D0; }
.alert-error { background: #FEE2E2; color: #991B1B; border: 1px solid #FECACA; }
.alert-warning { background: #FEF3C7; color: #92400E; border: 1px solid #FDE68A; }
.alert-info { background: #DBEAFE; color: #1E40AF; border: 1px solid #BFDBFE; }

/* Misc */
.divider { border: none; border-top: 1px solid var(--border); margin: 1.5rem 0; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mr-2 { margin-right: 0.5rem; }
.ml-1 { margin-left: 0.25rem; }
.w-full { width: 100%; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.font-mono { font-family: monospace; }
.cursor-pointer { cursor: pointer; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.hidden { display: none; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Responsive */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  .hero h1 { font-size: 2.25rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
}
@media (max-width: 480px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Connection indicator */
.connection-status { display: inline-flex; align-items: center; gap: 0.375rem; font-size: 0.8125rem; font-weight: 500; }
.connection-status::before { content: ''; width: 0.5rem; height: 0.5rem; border-radius: 50%; }
.connection-status.connected::before { background: var(--success); }
.connection-status.disconnected::before { background: var(--muted); }

/* Admin */
.admin-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; }