/* GradeX marketing website design system */
:root {
  --bg: #ffffff;
  --surface: #f8f9ff;
  --surface-2: #eef2ff;
  --text: #0f172a;
  --muted: #64748b;
  --muted-2: #94a3b8;
  --border: #e2e8f0;
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-soft: #eef2ff;
  --purple: #8b5cf6;
  --success: #10b981;
  --danger: #ef4444;
  --code: #0f172a;
  --shadow-sm: 0 8px 24px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 18px 48px rgba(99, 102, 241, 0.16);
  --gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
  --radius: 22px;
  --radius-sm: 14px;
  --container: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--primary-dark);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
}

.skip-link:focus {
  top: 16px;
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

img,
svg {
  display: block;
}

.container {
  width: min(100% - 40px, var(--container));
  margin: 0 auto;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.84);
  border-bottom: 1px solid rgba(226, 232, 240, 0.75);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.logo-mark {
  width: 36px;
  height: 36px;
}

.nav-links,
.nav-actions {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  color: #111827;
  font-size: 14px;
  font-weight: 650;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 750;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: var(--gradient);
  box-shadow: 0 12px 28px rgba(99, 102, 241, 0.28);
}

.btn-secondary {
  color: var(--text);
  background: #fff;
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.btn-ghost {
  color: var(--text);
  background: #fff;
  border-color: var(--border);
}

.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 64px 0 44px;
  min-height: 640px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 18% 22%, rgba(99, 102, 241, 0.16), transparent 24%),
    radial-gradient(circle at 88% 24%, rgba(139, 92, 246, 0.16), transparent 26%),
    linear-gradient(90deg, transparent 0, transparent 49px, rgba(99, 102, 241, 0.05) 50px, transparent 51px),
    linear-gradient(0deg, transparent 0, transparent 49px, rgba(99, 102, 241, 0.045) 50px, transparent 51px);
  background-size: auto, auto, 100px 100px, 100px 100px;
}

.hero::after {
  content: "";
  position: absolute;
  top: 94px;
  right: -90px;
  width: 620px;
  height: 260px;
  opacity: 0.5;
  pointer-events: none;
  background: repeating-radial-gradient(ellipse at center, rgba(99, 102, 241, 0.28) 0 1px, transparent 1px 10px);
  border-radius: 50%;
  transform: rotate(-8deg);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 60px;
  align-items: center;
}

.hero-wave {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  min-height: 420px;
  width: 100%;
  overflow: visible;
}

.hero-wave-img {
  width: min(108%, 760px);
  max-width: none;
  height: auto;
  object-fit: contain;
  margin-right: -4%;
  image-rendering: auto;
}

.hero-copy {
  max-width: 560px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid rgba(99, 102, 241, 0.18);
  border-radius: 999px;
  background: rgba(238, 242, 255, 0.86);
  color: var(--primary-dark);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 18px 0;
  font-size: clamp(48px, 7vw, 78px);
  line-height: 0.94;
  letter-spacing: -0.07em;
}

.hero h1 .hero-line {
  display: block;
}

.hero p {
  max-width: 500px;
  margin: 0 0 30px;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 30px;
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.pillars {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 26px 0 36px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.pillar {
  display: flex;
  gap: 14px;
  padding: 10px 18px;
}

.icon-box {
  flex: 0 0 42px;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--primary-soft);
  color: var(--primary);
}

.pillar h3,
.feature-step h3,
.card h3 {
  margin: 0 0 6px;
  font-size: 16px;
  line-height: 1.2;
}

.pillar p,
.feature-step p,
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 86px 0;
}

.section-header {
  max-width: 720px;
  margin: 0 auto 42px;
  text-align: center;
}

.section-kicker {
  margin-bottom: 10px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-header h2 {
  margin: 0 0 14px;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.section-header p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.product-preview {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 52px;
  align-items: center;
}

.dashboard-shell {
  display: grid;
  grid-template-columns: 168px 1fr;
  min-height: 430px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 26px 80px rgba(15, 23, 42, 0.09);
}

.dash-sidebar {
  padding: 22px 16px;
  border-right: 1px solid var(--border);
  background: linear-gradient(180deg, #fff, #f8f9ff);
}

.dash-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 15px;
  font-weight: 850;
}

.mini-logo {
  width: 20px;
  height: 20px;
}

.dash-nav {
  display: grid;
  gap: 7px;
}

.dash-nav span {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border-radius: 10px;
  color: #475569;
  font-size: 12px;
  font-weight: 700;
}

.dash-nav span.active {
  color: var(--primary-dark);
  background: #eeeaff;
}

.project-card {
  margin-top: 56px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  color: var(--muted);
  font-size: 11px;
}

.project-card strong {
  display: block;
  color: var(--text);
  font-size: 12px;
}

.dash-main {
  padding: 24px;
}

.dash-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}

.dash-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 22px;
  font-weight: 850;
  letter-spacing: -0.035em;
}

.running {
  padding: 4px 7px;
  border-radius: 999px;
  background: #dcfce7;
  color: #059669;
  font-size: 10px;
  font-weight: 850;
}

.exp-tag {
  color: var(--muted);
  font-size: 12px;
  text-align: right;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 22px;
}

.metric-card {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
}

.metric-card span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
}

.metric-card strong {
  display: block;
  font-size: 24px;
  line-height: 1;
  letter-spacing: -0.045em;
}

.metric-card small {
  color: var(--muted);
  font-size: 11px;
}

.metric-card .positive {
  color: var(--success);
}

.dash-panels {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 18px;
}

.panel {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #fff;
}

.panel h4 {
  margin: 0 0 14px;
  font-size: 13px;
}

.chart {
  position: relative;
  height: 178px;
  overflow: hidden;
  border-radius: 12px;
  background:
    linear-gradient(to right, rgba(226, 232, 240, 0.7) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(226, 232, 240, 0.7) 1px, transparent 1px);
  background-size: 25% 100%, 100% 25%;
}

.chart svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.chart-label {
  position: absolute;
  right: 32px;
  top: 88px;
  padding: 5px 8px;
  border-radius: 999px;
  background: #f5f3ff;
  color: var(--primary-dark);
  font-size: 10px;
  font-weight: 850;
}

.experiment-list {
  display: grid;
  gap: 11px;
}

.experiment-row {
  display: grid;
  grid-template-columns: 44px 1fr 46px 16px;
  gap: 8px;
  align-items: center;
  font-size: 12px;
}

.experiment-row .score {
  color: var(--success);
  font-weight: 850;
}

.experiment-row .bad {
  color: var(--danger);
}

.feature-rail {
  display: grid;
  gap: 34px;
}

.feature-step {
  position: relative;
  display: flex;
  gap: 16px;
}

.feature-step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 21px;
  top: 48px;
  width: 1px;
  height: 36px;
  background: var(--border);
}

.trusted {
  padding: 38px 0;
  text-align: center;
}

.trusted-title {
  margin-bottom: 18px;
  color: var(--muted-2);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.logo-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 34px;
  color: #64748b;
  font-size: 17px;
  font-weight: 800;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

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

.card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.card.featured {
  border-color: rgba(99, 102, 241, 0.32);
  background: linear-gradient(180deg, #fff, #f8f9ff);
  box-shadow: var(--shadow-md);
}

.card .tag {
  display: inline-flex;
  margin-bottom: 16px;
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 11px;
  font-weight: 850;
}

.install-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.code-card,
.code-block {
  position: relative;
  padding: 22px;
  border-radius: 18px;
  background: var(--code);
  color: #e2e8f0;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 13px;
  line-height: 1.7;
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.18);
  white-space: pre-wrap;
}

.copy-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 6px 9px;
  border: 1px solid rgba(226, 232, 240, 0.18);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
  cursor: pointer;
  font-size: 11px;
  font-weight: 800;
}

.copy-btn.copied {
  color: #fff;
  background: var(--success);
}

.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: linear-gradient(135deg, #fff, #f8f9ff);
  box-shadow: var(--shadow-sm);
}

.cta-band h3 {
  margin: 0 0 4px;
  font-size: 21px;
}

.cta-band p {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  padding: 56px 0 30px;
  border-top: 1px solid var(--border);
  background: #fbfcff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr repeat(4, 1fr);
  gap: 32px;
}

.footer-brand p {
  max-width: 320px;
  color: var(--muted);
}

.footer-col h4 {
  margin: 0 0 12px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.footer-col a {
  display: block;
  margin: 9px 0;
  color: var(--muted);
  font-size: 14px;
}

.footer-bottom {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
}

.page-hero {
  padding: 78px 0 48px;
  background:
    radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.12), transparent 26%),
    linear-gradient(180deg, #fff, #f8f9ff);
}

.page-hero h1 {
  max-width: 820px;
  margin: 0 0 16px;
  font-size: clamp(42px, 6vw, 70px);
  line-height: 0.98;
  letter-spacing: -0.065em;
}

.page-hero p {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.docs-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 48px;
  padding: 48px 0 92px;
}

.docs-sidebar {
  position: sticky;
  top: 96px;
  align-self: start;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #fff;
}

.docs-sidebar a {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 750;
}

.docs-sidebar a:hover {
  color: var(--primary);
  background: var(--primary-soft);
}

.docs-content {
  min-width: 0;
}

.docs-section {
  margin-bottom: 54px;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--border);
}

.docs-section h2 {
  margin: 0 0 14px;
  font-size: 34px;
  letter-spacing: -0.045em;
}

.docs-section p,
.docs-section li {
  color: var(--muted);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
  -webkit-overflow-scrolling: touch;
}

.command-table,
.cost-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  background: #fff;
}

.command-table th,
.command-table td,
.cost-table th,
.cost-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.command-table th,
.cost-table th {
  background: var(--surface);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

code {
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.92em;
}

.blog-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  padding: 52px 0 92px;
}

.post-card {
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.post-card.large {
  grid-row: span 2;
}

.post-date {
  color: var(--primary);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.post-card h2,
.post-card h3 {
  margin: 10px 0;
  letter-spacing: -0.04em;
}

.post-card p,
.post-card li {
  color: var(--muted);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  padding: 54px 0 38px;
}

.price-card {
  padding: 34px;
  border: 1px solid var(--border);
  border-radius: 28px;
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.price-card.featured {
  border-color: rgba(99, 102, 241, 0.35);
  background: linear-gradient(180deg, #fff, #f8f9ff);
  box-shadow: var(--shadow-md);
}

.price {
  margin: 22px 0;
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -0.055em;
}

.price small {
  color: var(--muted);
  font-size: 15px;
  font-weight: 650;
}

.check-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 24px 0;
  list-style: none;
}

.check-list li {
  color: var(--muted);
}

.check-list li::before {
  content: "\2713";
  margin-right: 10px;
  color: var(--success);
  font-weight: 800;
}

@media (max-width: 980px) {
  .hero-inner,
  .product-preview,
  .docs-layout,
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .hero-wave {
    min-height: 300px;
    justify-content: center;
  }

  .hero-wave-img {
    width: min(100%, 640px);
    margin-right: 0;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .pillars,
  .card-grid,
  .card-grid.three,
  .install-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .dashboard-shell {
    grid-template-columns: 1fr;
  }

  .dash-sidebar {
    display: none;
  }

  .metrics-grid,
  .dash-panels {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .nav-links,
  .nav-actions {
    position: fixed;
    left: 14px;
    right: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: #fff;
    box-shadow: var(--shadow-md);
  }

  .nav-links {
    top: 80px;
  }

  .nav-actions {
    top: 286px;
  }

  .nav-links.open,
  .nav-actions.open {
    display: flex;
  }

  .mobile-toggle {
    display: grid;
    place-items: center;
  }

  .hero {
    padding-top: 42px;
  }

  .hero h1 {
    font-size: 52px;
  }

  .hero-actions,
  .cta-band {
    align-items: stretch;
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .metrics-grid,
  .dash-panels {
    grid-template-columns: 1fr;
  }

  .docs-sidebar {
    position: static;
  }

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

  .logo-row {
    gap: 20px;
    font-size: 15px;
  }
}

@media (min-width: 1280px) and (max-width: 1440px) {
  .hero-inner {
    gap: 40px;
  }

  .hero-wave-img {
    width: min(105%, 700px);
    margin-right: -2%;
  }
}