/* Northline — playground SaaS shell (static HTML/CSS only) */

:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --bg-elevated: #ffffff;
  --bg-muted: #eef2f7;
  --bg-dark: #0b1220;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #0f172a;
  --text-muted: #64748b;
  --text-on-dark: #e2e8f0;
  --text-muted-on-dark: #94a3b8;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-soft: rgba(79, 70, 229, 0.1);
  --accent-2: #06b6d4;
  --success: #059669;
  --warning: #d97706;
  --danger: #dc2626;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
  --font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --max: 1120px;
  --nav-h: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
}

img,
svg,
video,
iframe {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

.container {
  width: min(var(--max), calc(100% - 2.5rem));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 100;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* —— Nav —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  background: rgba(246, 248, 251, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
}

.brand span {
  font-size: 1.05rem;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: block;
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
  background: var(--bg-muted);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.1rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.28);
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--bg-elevated);
  border-color: var(--border-strong);
  color: var(--text);
}

.btn-secondary:hover {
  background: var(--bg-muted);
}

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

.btn-ghost:hover {
  color: var(--text);
  background: var(--bg-muted);
}

.btn-lg {
  padding: 0.85rem 1.35rem;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

/* —— Hero —— */
.hero {
  position: relative;
  padding: 3.5rem 0 2.5rem;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto;
  height: 70%;
  background:
    radial-gradient(circle at 20% 30%, rgba(79, 70, 229, 0.18), transparent 45%),
    radial-gradient(circle at 80% 10%, rgba(6, 182, 212, 0.16), transparent 40%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 1rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.2);
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-weight: 800;
}

.hero h1 .gradient {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lede {
  margin: 0 0 1.5rem;
  max-width: 36rem;
  color: var(--text-muted);
  font-size: 1.1rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.hero-meta strong {
  color: var(--text);
}

.hero-panel {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.hero-panel-top {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-muted);
}

.hero-panel-top i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-strong);
}

.hero-panel-top i:nth-child(1) {
  background: #f87171;
}

.hero-panel-top i:nth-child(2) {
  background: #fbbf24;
}

.hero-panel-top i:nth-child(3) {
  background: #34d399;
}

.dashboard-mock {
  padding: 1.25rem;
  display: grid;
  gap: 1rem;
}

.dash-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.metric {
  padding: 0.9rem;
  border-radius: 10px;
  background: var(--bg-muted);
  border: 1px solid var(--border);
}

.metric label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.metric strong {
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.metric .delta {
  font-size: 0.75rem;
  color: var(--success);
  font-weight: 600;
}

.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 0.4rem;
  height: 120px;
  padding: 0.75rem;
  border-radius: 10px;
  background: linear-gradient(180deg, #eef2ff, #f8fafc);
  border: 1px solid var(--border);
}

.chart-bars span {
  flex: 1;
  border-radius: 6px 6px 2px 2px;
  background: linear-gradient(180deg, var(--accent), #818cf8);
  opacity: 0.9;
}

/* —— Sections —— */
.section {
  padding: 4rem 0;
}

.section-tight {
  padding: 2.5rem 0;
}

.section-dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

.section-dark .section-kicker,
.section-dark .muted {
  color: var(--text-muted-on-dark);
}

.section-head {
  max-width: 40rem;
  margin-bottom: 2rem;
}

.section-kicker {
  margin: 0 0 0.5rem;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.section-dark .section-kicker {
  color: #a5b4fc;
}

.section h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.6rem, 3vw, 2.15rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.muted {
  margin: 0;
  color: var(--text-muted);
}

/* —— Logo cloud —— */
.logo-cloud {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.logo-pill {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 56px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: -0.01em;
}

.logo-pill .mark {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  background: var(--bg-muted);
}

/* —— Cards / grids —— */
.grid-3 {
  display: grid;
  gap: 1rem;
}

.grid-2 {
  display: grid;
  gap: 1rem;
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.icon-badge {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  margin-bottom: 0.9rem;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  font-size: 0.85rem;
}

.feature-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding: 0.4rem 0 0.4rem 1.4rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}

/* —— Stats —— */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.stat {
  text-align: center;
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(255, 255, 255, 0.03);
}

.stat strong {
  display: block;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}

.stat span {
  color: var(--text-muted-on-dark);
  font-size: 0.9rem;
}

/* —— Media / embeds —— */
.media-grid {
  display: grid;
  gap: 1rem;
}

.embed {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #000;
  aspect-ratio: 16 / 9;
  box-shadow: var(--shadow);
}

.embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.embed-caption {
  margin: 0.6rem 0 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* —— Tracker lab panel —— */
.tracker-lab {
  border: 1px dashed var(--border-strong);
  background: #fffbeb;
  border-radius: var(--radius);
  padding: 1.25rem;
}

.tracker-lab h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.tracker-lab p {
  margin: 0 0 0.85rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.tracker-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  font-family: var(--mono);
}

.tag .pip {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--warning);
}

/* —— Pricing —— */
.pricing-grid {
  display: grid;
  gap: 1rem;
  align-items: stretch;
}

.price-card {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.price-card.featured {
  border-color: var(--accent);
  box-shadow: 0 12px 36px rgba(79, 70, 229, 0.18);
  transform: none;
}

.price-card .badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.price-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.15rem;
}

.price-card .price {
  margin: 0.75rem 0 0.25rem;
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.price-card .price span {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
}

.price-card .desc {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.price-card .btn {
  margin-top: auto;
}

/* —— Testimonials —— */
.quote {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  line-height: 1.5;
}

.quote-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.1rem;
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #c7d2fe, #a5f3fc);
}

.quote-meta strong {
  display: block;
  font-size: 0.92rem;
}

.quote-meta span {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* —— CTA band —— */
.cta-band {
  background: linear-gradient(135deg, #312e81, #4f46e5 50%, #0e7490);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  display: grid;
  gap: 1.25rem;
  box-shadow: var(--shadow-lg);
}

.cta-band h2 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
}

.cta-band p {
  margin: 0;
  color: rgba(255, 255, 255, 0.85);
  max-width: 32rem;
}

.cta-band .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.cta-band .btn-primary {
  background: #fff;
  color: var(--accent);
  box-shadow: none;
}

.cta-band .btn-secondary {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

/* —— Page hero (inner) —— */
.page-hero {
  padding: 2.75rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(circle at 10% 0%, rgba(79, 70, 229, 0.1), transparent 40%),
    var(--bg);
}

.page-hero h1 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  letter-spacing: -0.03em;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 0.85rem;
  padding: 0;
  list-style: none;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a:hover {
  color: var(--accent);
}

/* —— Forms —— */
.form-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.form-grid {
  display: grid;
  gap: 0.9rem;
}

.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: #fff;
  color: var(--text);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid rgba(79, 70, 229, 0.35);
  border-color: var(--accent);
}

.field .hint {
  margin: 0.3rem 0 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* —— Table —— */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th,
td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--bg-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

tr:last-child td {
  border-bottom: 0;
}

/* —— Footer —— */
.site-footer {
  margin-top: 2rem;
  background: var(--bg-dark);
  color: var(--text-on-dark);
  padding: 3rem 0 1.5rem;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 2rem;
}

.site-footer .brand {
  margin-bottom: 0.75rem;
}

.site-footer p {
  margin: 0;
  color: var(--text-muted-on-dark);
  font-size: 0.92rem;
  max-width: 22rem;
}

.footer-col h4 {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #cbd5e1;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li + li {
  margin-top: 0.45rem;
}

.footer-col a {
  color: var(--text-muted-on-dark);
  font-size: 0.92rem;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  color: var(--text-muted-on-dark);
  font-size: 0.85rem;
}

/* —— Responsive —— */
@media (min-width: 720px) {
  .nav-links {
    display: flex;
  }

  .logo-cloud {
    grid-template-columns: repeat(6, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-2,
  .media-grid,
  .pricing-grid,
  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }

  .form-grid.two {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 960px) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .price-card.featured {
    transform: scale(1.03);
  }

  .stats {
    grid-template-columns: repeat(4, 1fr);
  }
}