/*
 * Design Brief: Rubendario ← inspired by https://drawthings.ai/
 *
 * Structure: minimal nav → centered typography hero → 6-card workflow grid
 *            → staggered capability splits → 3-tier edition cards
 *            → technology split panel → soft CTA band → centered footer
 *
 * Draw Things cues: warm off-white canvas, confident centered headlines,
 * workflow feature grid, edition tier cards, privacy-first tone, pill CTAs.
 * Adapted for enterprise AI/data platform — light-first, not dark-gradient SaaS.
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
  --color-bg: #faf9f6;
  --color-bg-alt: #f0ede6;
  --color-surface: #ffffff;
  --color-text: #1a1a1c;
  --color-text-muted: #636366;
  --color-accent: #1a1a1c;
  --color-accent-hover: #000000;
  --color-highlight: #c45c52;
  --color-highlight-soft: #f5e8e6;
  --color-border: #e5e2dc;
  --color-on-dark: #faf9f6;

  --font-display: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --space-section: clamp(4rem, 8vw, 7rem);
  --space-grid: clamp(1.5rem, 3vw, 2.5rem);
  --content-max: 72rem;
  --content-narrow: 48rem;

  --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-reveal: 0.7s cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 3px rgba(26, 26, 28, 0.06);
  --shadow-md: 0 8px 32px rgba(26, 26, 28, 0.08);
  --shadow-lg: 0 24px 64px rgba(26, 26, 28, 0.1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul {
  list-style: none;
}

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

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

.section-label {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-highlight);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.section-subtitle {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--color-text-muted);
  max-width: 38rem;
  margin-top: 1rem;
}

.section-header {
  text-align: center;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-header .section-subtitle {
  margin-inline: auto;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding-block: 1rem;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  background: rgba(250, 249, 246, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}

.site-logo img {
  width: 32px;
  height: 32px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav__links {
  display: flex;
  gap: 1.75rem;
}

.site-nav__links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}

.site-nav__links a:hover {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  transition: background var(--transition-base), color var(--transition-base),
              transform var(--transition-base), box-shadow var(--transition-base);
}

.btn:focus-visible {
  outline: 2px solid var(--color-highlight);
  outline-offset: 3px;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-on-dark);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn--secondary:hover {
  border-color: var(--color-text);
  background: var(--color-surface);
}

.btn--highlight {
  background: var(--color-highlight);
  color: var(--color-on-dark);
}

.btn--highlight:hover {
  background: #b04e45;
  transform: translateY(-1px);
}

/* Hero — centered-typography */
.hero {
  padding-top: calc(var(--space-section) + 3rem);
  padding-bottom: var(--space-section);
  text-align: center;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__eyebrow {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-highlight);
  margin-bottom: 1.25rem;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6.5vw, 4.25rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  max-width: 16ch;
  margin-bottom: 1.5rem;
}

.hero__subtitle {
  font-size: clamp(1.0625rem, 2.2vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 36rem;
  margin-bottom: 2.5rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 3.5rem;
}

.hero__visual {
  width: 100%;
  max-width: 56rem;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
}

.hero__visual svg {
  width: 100%;
  height: 100%;
}

.hero__trust {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  width: 100%;
}

.hero__trust-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

.hero__trust-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem 3rem;
  align-items: center;
}

.trust-logo {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
  opacity: 0.7;
  letter-spacing: 0.02em;
}

/* Platform Overview — workflow-grid-6 */
.platform {
  padding-block: var(--space-section);
  background: var(--color-bg-alt);
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-grid);
}

.workflow-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: transform var(--transition-base), box-shadow var(--transition-base),
              border-color var(--transition-base);
}

.workflow-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.workflow-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-highlight-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--color-highlight);
}

.workflow-card__title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.workflow-card__desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

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

/* Capabilities — staggered-split-panels */
.capabilities {
  padding-block: var(--space-section);
}

.capability-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.capability-row:last-child {
  margin-bottom: 0;
}

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

.capability-row--reverse .capability-row__visual {
  order: 1;
}

.capability-row__label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-highlight);
  margin-bottom: 0.75rem;
}

.capability-row__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.capability-row__desc {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.capability-row__list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 1.75rem;
}

.capability-row__list li {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.9375rem;
}

.capability-row__list li::before {
  content: '';
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  margin-top: 0.55em;
  border-radius: 50%;
  background: var(--color-highlight);
}

.capability-row__visual {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.capability-row__visual svg {
  width: 80%;
  height: auto;
}

/* Solutions — edition-tier-cards */
.solutions {
  padding-block: var(--space-section);
  background: var(--color-bg-alt);
}

.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-grid);
  align-items: stretch;
}

.tier-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.tier-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.tier-card--featured {
  border-color: var(--color-highlight);
  box-shadow: var(--shadow-md);
  position: relative;
}

.tier-card--featured::before {
  content: 'Recommended';
  position: absolute;
  top: -0.75rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-highlight);
  color: var(--color-on-dark);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.875rem;
  border-radius: var(--radius-pill);
}

.tier-card__badge {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.tier-card__name {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.tier-card__desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.tier-card__features {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.tier-card__features li {
  font-size: 0.875rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.tier-card__features li svg {
  flex-shrink: 0;
  margin-top: 0.15em;
  color: var(--color-highlight);
}

.tier-card .btn {
  width: 100%;
}

/* Technology — feature-split-reverse */
.technology {
  padding-block: var(--space-section);
}

.tech-panel {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 4vw, 3.5rem);
  box-shadow: var(--shadow-sm);
}

.tech-panel__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.tech-stat__value {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.tech-stat__label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.tech-panel__visual {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.tech-panel__visual svg {
  width: 85%;
  height: auto;
}

/* CTA — full-width-soft-band */
.cta-band {
  padding-block: var(--space-section);
  background: var(--color-accent);
  color: var(--color-on-dark);
}

.cta-band__inner {
  text-align: center;
}

.cta-band__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.cta-band__desc {
  font-size: 1.0625rem;
  opacity: 0.8;
  max-width: 32rem;
  margin-inline: auto;
  margin-bottom: 2rem;
}

.cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.cta-band .btn--primary {
  background: var(--color-on-dark);
  color: var(--color-accent);
}

.cta-band .btn--primary:hover {
  background: var(--color-bg);
}

.cta-band .btn--secondary {
  border-color: rgba(250, 249, 246, 0.35);
  color: var(--color-on-dark);
}

.cta-band .btn--secondary:hover {
  background: rgba(250, 249, 246, 0.1);
  border-color: var(--color-on-dark);
}

/* Footer */
.site-footer {
  padding-block: 3rem 2rem;
  border-top: 1px solid var(--color-border);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2rem;
  justify-content: center;
}

.site-footer__links a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}

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

.site-footer__email a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-highlight);
}

.site-footer__copy {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* Modals */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal[hidden] {
  display: none;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(26, 26, 28, 0.5);
  backdrop-filter: blur(4px);
}

.modal__panel {
  position: relative;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 32rem;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: background var(--transition-base), color var(--transition-base);
}

.modal__close:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.modal__close:focus-visible {
  outline: 2px solid var(--color-highlight);
  outline-offset: 2px;
}

.modal__panel h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  padding-right: 2rem;
}

.modal__panel p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  line-height: 1.65;
}

.modal__panel p:last-child {
  margin-bottom: 0;
}

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

.modal__panel ul li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.modal__panel ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-highlight);
}

/* Policy pages */
.policy-page {
  padding-top: calc(var(--space-section) + 2rem);
  padding-bottom: var(--space-section);
}

.policy-page h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.policy-page .policy-updated {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
}

.policy-page h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.policy-page p,
.policy-page li {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  line-height: 1.7;
}

.policy-page ul {
  padding-left: 1.25rem;
  list-style: disc;
}

.policy-page a {
  color: var(--color-highlight);
  text-decoration: underline;
  text-underline-offset: 2px;
}