/* Gradient Labs–inspired design system */

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

:root {
  /* Gradient Labs palette */
  --white: #ffffff;
  --border: #ede9de;
  --muted: #67675f;
  --charcoal: #383835;
  --black: #000000;
  --orange: #ff8933;
  --orange-light: #ffa666;
  --orange-dark: #e07020;
  --orange-tint: #fbe8df;

  /* Typography */
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-serif: "Instrument Serif", Georgia, "Times New Roman", serif;

  /* Radii */
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;
  --radius-pill: 100px;

  /* Layout */
  --container: 1100px;
  --section-y: clamp(3rem, 6vw, 4.5rem);
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  color: var(--black);
  background: var(--white);
  line-height: 1.6;
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--muted) 6%, transparent) 1px, transparent 1px);
  background-size: 120px 100%;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
}

/* Navigation */

.nav {
  padding: 1.25rem 0;
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--white) 92%, transparent);
  backdrop-filter: blur(12px);
  z-index: 10;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.logo__img {
  display: block;
  height: 1.75rem;
  width: auto;
}

.footer .logo__img {
  height: 2rem;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.75rem;
}

.nav__link {
  color: var(--black);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav__link--cta {
  background: var(--black);
  color: var(--white);
  border: none;
  border-radius: var(--radius-pill);
  padding: 0.55rem 1rem;
  font-weight: 500;
}

.nav__sep {
  color: var(--muted);
}

/* Buttons */

.btn {
  display: inline-block;
  border: none;
  background: var(--orange);
  color: var(--black);
  border-radius: var(--radius-pill);
  padding: 1rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease;
}

.btn:hover {
  background: var(--orange-light);
}

/* Wireframe placeholders */

.wireframe-box {
  border: 1px solid color-mix(in srgb, var(--orange) 18%, transparent);
  background: linear-gradient(145deg, var(--orange-tint) 0%, var(--white) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.wireframe-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--muted) 5%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--muted) 5%, transparent) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.wireframe-label {
  position: relative;
  z-index: 1;
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.wireframe-box--hero {
  width: 100%;
  aspect-ratio: 16 / 9;
  margin-top: 3rem;
}

.hero__mockup {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 3rem;
  border: 2px solid color-mix(in srgb, var(--orange-dark) 30%, transparent);
  border-radius: var(--radius-sm);
}

.wireframe-box--card {
  display: none !important;
}

.feature__mockup {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

/* Hero */

.hero {
  padding: clamp(2.5rem, 5vw, 4rem) 0 var(--section-y);
}

.hero__inner {
  text-align: center;
}

.hero__headline {
  font-family: var(--font-sans);
  font-size: clamp(2.25rem, 5vw, 3rem);
  font-weight: 400;
  line-height: 1.04;
  letter-spacing: -0.05em;
  margin: 0 0 1.5rem;
  max-width: 16ch;
  margin-left: auto;
  margin-right: auto;
}

.hero__description {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--muted);
  line-height: 1.55;
  letter-spacing: -0.015em;
  max-width: 52ch;
  margin: 0 auto 2rem;
}

.hero__caption {
  margin-top: 1.5rem;
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--muted);
  line-height: 1.55;
  letter-spacing: -0.015em;
}

/* Problem / Solution */

.problem-solution {
  padding: var(--section-y) 0;
}

.problem-solution__inner {
  display: grid;
  grid-template-columns: minmax(8rem, 28%) 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.problem-solution__label,
.chip {
  display: inline-block;
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 500;
  font-style: normal;
  letter-spacing: -0.01em;
  color: var(--orange);
  text-transform: none;
  border: none;
  padding: 0;
  background: none;
}

.problem-solution__content {
  max-width: 42rem;
}

.problem-solution__paragraph {
  margin: 0;
  font-size: clamp(1rem, 2vw, 1.125rem);
  line-height: 1.65;
  letter-spacing: -0.015em;
  color: var(--muted);
}

.problem-solution__paragraph + .problem-solution__paragraph {
  margin-top: 1.5rem;
}

.problem-solution__paragraph strong {
  color: var(--black);
  font-weight: 500;
}

/* Section headers */

.section-header {
  margin-bottom: 3rem;
}

.section-header--center {
  text-align: center;
}

.section-header h2 {
  font-family: var(--font-sans);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin: 0.75rem 0 1rem;
  max-width: 22ch;
}

.section-header--center h2 {
  margin-left: auto;
  margin-right: auto;
}

.section-header__description {
  color: var(--muted);
  font-size: 1.0625rem;
  line-height: 1.55;
  letter-spacing: -0.015em;
  max-width: 48ch;
  margin: 0;
}

.section-header--center .section-header__description {
  margin-left: auto;
  margin-right: auto;
}

/* How It Works */

.how-it-works {
  padding: var(--section-y) 0;
}

.card-grid {
  display: grid;
  gap: 1.25rem;
}

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

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  background: var(--white);
}

.card h3 {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
}

.card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--muted);
}

.section-cta {
  text-align: center;
  margin-top: 3rem;
}

/* Aggregate stats */

.stats {
  padding: var(--section-y) 0;
}

.stats-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--white);
}

.stats-panel__toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.stats-chip {
  display: inline-flex;
  align-items: center;
  height: 2rem;
  padding: 0 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.8125rem;
  letter-spacing: -0.01em;
  color: var(--charcoal);
  background: var(--white);
}

.stats-chip--muted {
  margin-left: auto;
  color: var(--muted);
}

.stats-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.stats-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  background: var(--white);
}

.stats-card__label {
  margin: 0;
  font-size: 0.6875rem;
  color: var(--muted);
  letter-spacing: -0.01em;
}

.stats-card__value {
  margin: 0.25rem 0 0;
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.stats-panel__caption {
  margin: 1.5rem 0 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
  letter-spacing: -0.015em;
}

.stats-heat__months,
.stats-heat__grid {
  display: flex;
  gap: 3px;
}

.stats-heat__months span,
.stats-heat__days span {
  font-size: 0.5625rem;
  line-height: 1;
  color: var(--muted);
}

.stats-heat__months {
  margin-bottom: 0.35rem;
  min-height: 0.75rem;
}

.stats-heat__months span,
.stats-heat__week,
.stats-heat__days {
  flex: 1;
  min-width: 0;
}

.stats-heat__spacer {
  flex: 0 0 0.875rem;
  max-width: 0.875rem;
}

.stats-heat__days {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex: 0 0 0.875rem;
  max-width: 0.875rem;
  padding-right: 2px;
  text-align: right;
}

.stats-heat__days span {
  height: 0.7rem;
}

.stats-heat__week {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.stats-heat__week i,
.stats-heat__legend i {
  display: block;
  font-style: normal;
  border-radius: 2px;
}

.stats-heat__week i {
  width: 100%;
  aspect-ratio: 1;
}

.stats-heat i.h0 { background: var(--border); }
.stats-heat i.h1 { background: var(--orange-tint); }
.stats-heat i.h2 { background: #f5a574; }
.stats-heat i.h3 { background: var(--orange); }
.stats-heat i.h4 { background: var(--orange-dark); }

.stats-heat__legend {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.25rem;
  margin-top: 0.75rem;
  font-size: 0.625rem;
  color: var(--muted);
}

.stats-heat__legend i {
  width: 0.7rem;
  height: 0.7rem;
}

.stats-effort {
  margin-top: 0.5rem;
}

.stats-effort__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.stats-effort__head .stats-panel__caption {
  margin: 0;
}

.stats-lenses {
  display: flex;
  gap: 0.35rem;
}

.stats-lens {
  display: inline-flex;
  align-items: center;
  height: 1.75rem;
  padding: 0 0.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.75rem;
  color: var(--muted);
}

.stats-lens--active {
  border-color: transparent;
  background: var(--black);
  color: var(--white);
}

.stats-bars {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.stats-bars__meta {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.3rem;
  font-size: 0.75rem;
  letter-spacing: -0.01em;
}

.stats-bars__meta span:first-child {
  color: var(--muted);
}

.stats-bars__meta span:last-child {
  font-variant-numeric: tabular-nums;
  color: var(--black);
}

.stats-bars__track {
  height: 0.625rem;
  border-radius: 3px;
  background: var(--white);
  overflow: hidden;
}

.stats-bars__track span {
  display: block;
  height: 100%;
  border-radius: 3px;
  background: var(--black);
}

.stats-note {
  margin: 1rem 0 0;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--muted);
  letter-spacing: -0.01em;
}

.stats-points {
  margin-top: 1.75rem;
}

/* Features */

.features {
  padding: var(--section-y) 0;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
  align-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 4vw, 2rem);
  background: var(--white);
}

.feature-row--reverse .feature-row__copy {
  order: 2;
}

.feature-row--reverse .feature__mockup {
  order: 1;
}

.feature-row h3 {
  font-family: var(--font-sans);
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.03em;
  margin: 0;
}

/* FAQ */

.faq {
  padding: var(--section-y) 0;
}

.faq-list {
  max-width: 680px;
  margin: 0 auto;
  display: grid;
  gap: 0.75rem;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
  background: var(--white);
}

.faq-item dt {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.625rem;
}

.faq-item dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.55;
  letter-spacing: -0.01em;
}

/* Footer */

.footer {
  padding: var(--section-y) 0 calc(var(--section-y) * 1.25);
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}

.footer__tagline {
  margin: 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--muted);
  letter-spacing: -0.01em;
}

.footer__links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8125rem;
}

.footer__links a {
  color: var(--muted);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.footer__links a:hover {
  color: var(--black);
}

/* Legal pages */

.legal {
  padding: clamp(2.5rem, 5vw, 4rem) 0 calc(var(--section-y) * 1.1);
}

.legal__inner {
  max-width: 720px;
}

.legal__eyebrow {
  margin: 0 0 0.75rem;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--orange);
}

.legal__title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.legal__meta {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.875rem;
}

.legal__body {
  margin-top: 2.25rem;
}

.legal__body h2 {
  margin: 2.25rem 0 0.75rem;
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.legal__body h3 {
  margin: 1.5rem 0 0.5rem;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.015em;
}

.legal__body p,
.legal__body li {
  color: var(--charcoal);
  font-size: 0.9375rem;
  line-height: 1.65;
  letter-spacing: -0.01em;
}

.legal__body p {
  margin: 0 0 1rem;
}

.legal__body ul {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

.legal__body li {
  margin-bottom: 0.4rem;
}

.legal__body a {
  color: var(--black);
  text-underline-offset: 2px;
}


/* Responsive */

@media (max-width: 768px) {
  .problem-solution__inner {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .card-grid--3 {
    grid-template-columns: 1fr;
  }

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

  .stats-chip--muted {
    margin-left: 0;
  }

  .feature-row,
  .feature-row--reverse {
    grid-template-columns: 1fr;
  }

  .feature-row--reverse .feature-row__copy,
  .feature-row--reverse .feature__mockup {
    order: unset;
  }
}