/* Kerno Analytics — Enterprise marketing & layout layer */

:root {
  --max-width-wide: 80rem;
  --header-height: 4.25rem;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --shadow-lg: 0 20px 50px -12px rgba(60, 55, 48, 0.15);
  --shadow-glow: 0 0 0 1px rgba(232, 106, 26, 0.08), 0 8px 32px rgba(232, 106, 26, 0.12);
  --gradient-hero: linear-gradient(165deg, var(--kerno-cream) 0%, var(--kerno-cream-dark) 45%, var(--kerno-grey-100) 100%);
  --gradient-accent: linear-gradient(135deg, var(--kerno-orange) 0%, #d45510 100%);
  --gradient-mesh: radial-gradient(ellipse 80% 60% at 90% 10%, rgba(232, 106, 26, 0.14), transparent 50%),
    radial-gradient(ellipse 60% 50% at 10% 80%, rgba(237, 232, 220, 0.9), transparent 55%);
}

[data-theme="dark"] {
  --gradient-hero: linear-gradient(165deg, #12100e 0%, #1a1816 50%, #24211e 100%);
  --gradient-mesh: radial-gradient(ellipse 80% 60% at 90% 10%, rgba(240, 120, 48, 0.18), transparent 50%),
    radial-gradient(ellipse 60% 50% at 10% 80%, rgba(36, 33, 30, 0.8), transparent 55%);
  --shadow-lg: 0 20px 50px -12px rgba(0, 0, 0, 0.5);
}

body {
  font-family: var(--font-sans);
  letter-spacing: -0.01em;
  background: var(--kerno-cream);
  background-image: var(--gradient-mesh);
  background-attachment: fixed;
}

h1, h2, .display-title {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.25rem, 5.5vw, 3.5rem);
  line-height: 1.08;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.375rem);
}

/* Sticky header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 243, 235, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

[data-theme="dark"] .site-header {
  background: rgba(18, 16, 14, 0.88);
}

.site-header.is-scrolled {
  border-bottom-color: var(--kerno-grey-200);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  min-height: var(--header-height);
  max-width: var(--max-width-wide);
  padding: 0 var(--space-xl);
}

.site-logo {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.site-logo__mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  background: var(--gradient-accent);
  box-shadow: var(--shadow-glow);
}

.site-nav a {
  position: relative;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: var(--space-xs) 0;
}

.site-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--kerno-orange);
  border-radius: 1px;
}

.site-nav__account {
  padding: var(--space-xs) var(--space-md) !important;
  color: var(--kerno-grey-500) !important;
  background: var(--kerno-surface);
  border: 1px solid var(--kerno-grey-200);
  border-radius: 999px;
}

.site-nav__account:hover {
  border-color: var(--kerno-orange);
  color: var(--kerno-orange) !important;
  text-decoration: none !important;
}

.site-nav__account::after {
  display: none !important;
}

@media (max-width: 40rem) {
  .site-nav {
    background: var(--kerno-surface);
    border: 1px solid var(--kerno-grey-200);
    padding: var(--space-md);
    min-width: 12rem;
  }

  .site-nav-toggle {
    background: var(--kerno-surface);
  }
}

/* Main layout */
.site-main {
  max-width: var(--max-width-wide);
  padding: var(--space-2xl) var(--space-xl) 4rem;
}

.site-main--flush {
  max-width: none;
  padding: 0;
}

.site-content {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-xl) 4rem;
}

/* Buttons */
.btn {
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: 999px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: var(--gradient-accent);
  box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
  box-shadow: 0 0 0 1px rgba(232, 106, 26, 0.2), 0 12px 40px rgba(232, 106, 26, 0.25);
}

.btn--lg {
  padding: var(--space-md) var(--space-xl);
  font-size: 0.9375rem;
}

.btn--sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.8125rem;
}

.site-nav__auth {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.btn--ghost {
  color: var(--kerno-grey-500);
  background: transparent;
  border: 1px solid var(--kerno-grey-200);
}

.btn--ghost:hover {
  background: var(--kerno-surface);
  border-color: var(--kerno-grey-300);
  text-decoration: none;
}

/* Hero band */
.hero-band {
  position: relative;
  margin: calc(-1 * var(--space-2xl)) calc(-1 * var(--space-xl)) var(--space-2xl);
  padding: clamp(3rem, 8vw, 5.5rem) var(--space-xl);
  background: var(--gradient-hero);
  border-bottom: 1px solid var(--kerno-grey-200);
  overflow: hidden;
}

.hero-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-mesh);
  pointer-events: none;
}

.hero-band__inner {
  position: relative;
  max-width: var(--max-width-wide);
  margin: 0 auto;
}

.hero-band .page-hero__eyebrow {
  border: 1px solid rgba(232, 106, 26, 0.25);
}

.hero-band h1 {
  max-width: 14ch;
  margin-bottom: var(--space-lg);
}

.hero-band .page-hero__lead {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  line-height: 1.65;
  max-width: 36rem;
}

/* Home grid */
.home-hero {
  gap: clamp(2rem, 5vw, 4rem);
  margin-bottom: 0;
}

.home-hero__copy {
  max-width: 36rem;
}

.home-preview {
  position: relative;
}

.home-preview__frame {
  padding: var(--space-md);
  background: var(--kerno-surface);
  border: 1px solid var(--kerno-grey-200);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
}

.home-preview__chrome {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--kerno-grey-100);
}

.home-preview__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--kerno-grey-200);
}

.home-preview__dot:first-child { background: var(--kerno-down); }
.home-preview__dot:nth-child(2) { background: var(--kerno-orange); }
.home-preview__dot:nth-child(3) { background: var(--kerno-up); }

.home-preview__label {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--kerno-grey-400);
}

.home-preview .ticker-card {
  margin: 0;
  box-shadow: none;
  border: none;
  padding: var(--space-lg);
}

.home-preview-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  font-size: 0.8125rem;
}

.home-preview-note::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--kerno-up);
  border-radius: 50%;
  animation: pulse-live 2s ease infinite;
}

@keyframes pulse-live {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Stats */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: var(--space-lg);
  margin: var(--space-2xl) 0;
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--kerno-grey-200);
  border-bottom: 1px solid var(--kerno-grey-200);
}

.stat {
  text-align: center;
}

.stat__value {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 600;
  color: var(--kerno-grey-500);
  line-height: 1.1;
}

.stat__label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--kerno-grey-400);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Logo strip */
.logo-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl) var(--space-2xl);
  padding: var(--space-xl) 0;
  opacity: 0.7;
}

.logo-strip__item {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--kerno-grey-400);
}

/* Section */
.section {
  margin-bottom: var(--space-2xl);
}

.section__header {
  max-width: 40rem;
  margin-bottom: var(--space-xl);
}

.section__eyebrow {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--kerno-orange);
}

/* Feature cards upgrade */
.feature-card {
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.feature-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-bottom: var(--space-md);
  color: var(--kerno-orange);
  background: var(--kerno-orange-light);
  border-radius: var(--radius-md);
}

.feature-card__icon svg {
  width: 1.375rem;
  height: 1.375rem;
}

.feature-card h3 {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--kerno-grey-500);
}

/* Plans band */
.plans-band {
  position: relative;
  padding: var(--space-2xl);
  background: var(--kerno-surface);
  border: 1px solid var(--kerno-grey-200);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.plans-band::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-accent);
}

.plans-band__grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

/* Page shell (inner pages) */
.page-shell {
  padding-top: var(--space-lg);
}

.page-shell .page-hero {
  margin-bottom: var(--space-xl);
}

.page-shell h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  font-size: 0.8125rem;
  color: var(--kerno-grey-400);
}

.breadcrumb a {
  color: var(--kerno-grey-400);
  text-decoration: none;
}

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

.breadcrumb__sep {
  opacity: 0.5;
}

/* Footer */
.site-footer {
  padding: 0;
  text-align: left;
  background: var(--kerno-cream-dark);
  border-top: 1px solid var(--kerno-grey-200);
}

.site-footer__inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-xl);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-xl);
  grid-template-columns: 2fr repeat(3, 1fr);
  margin-bottom: var(--space-2xl);
}

@media (max-width: 48rem) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 32rem) {
  .site-footer__grid {
    grid-template-columns: 1fr;
  }
}

.site-footer__brand p {
  margin: var(--space-md) 0 0;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--kerno-grey-400);
  max-width: 22rem;
}

.site-footer__col h4 {
  margin: 0 0 var(--space-md);
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--kerno-grey-400);
}

.site-footer__col ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer__col li {
  margin-bottom: var(--space-sm);
}

.site-footer__col a {
  font-size: 0.9375rem;
  color: var(--kerno-grey-500);
  text-decoration: none;
}

.site-footer__col a:hover {
  color: var(--kerno-orange);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--kerno-grey-200);
  font-size: 0.8125rem;
  color: var(--kerno-grey-400);
}

/* Ticker card polish */
.ticker-card {
  border-radius: var(--radius-xl);
}

.metric-card {
  border-radius: var(--radius-lg);
}

/* Analysis page */
.analysis-page-header {
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--kerno-grey-200);
  margin-bottom: var(--space-xl);
}

/* Pricing cards */
.plan-card {
  border-radius: var(--radius-xl);
}

.plan-card.is-popular {
  box-shadow: var(--shadow-glow);
}

/* Account */
.settings-panel {
  border-radius: var(--radius-xl);
}

/* Testimonial */
.quote-card {
  padding: var(--space-2xl);
  background: var(--kerno-surface);
  border: 1px solid var(--kerno-grey-200);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
}

.quote-card blockquote {
  margin: 0 0 var(--space-lg);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  line-height: 1.5;
  color: var(--kerno-grey-500);
}

.quote-card cite {
  font-size: 0.875rem;
  font-style: normal;
  font-weight: 600;
  color: var(--kerno-grey-400);
}

/* Steps */
.steps {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
}

.step {
  padding: var(--space-xl);
  background: var(--kerno-surface);
  border: 1px solid var(--kerno-grey-200);
  border-radius: var(--radius-xl);
}

.step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin-bottom: var(--space-md);
  font-size: 0.875rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-accent);
  border-radius: 50%;
}

.step h3 {
  font-size: 1rem;
  margin-bottom: var(--space-sm);
}

.step p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--kerno-grey-400);
}