/* Design tokens — Dropbox-inspired */
:root {
  --dbx-blue: #0061FE;
  --dbx-blue-hover: #004DC7;
  --dbx-blue-light: #B4D1FF;
  --dbx-blue-wash: #F2F7FF;
  --dbx-canvas: #F7F5F2;
  --dbx-canvas-white: #FFFFFF;
  --dbx-ink: #1E1919;
  --dbx-ink-soft: #44403D;
  --dbx-muted: #736C64;
  --dbx-muted-strong: #5B5650;
  --dbx-surface: #FFFFFF;
  --dbx-surface-soft: #EBE9E6;
  --dbx-surface-dark: #1E1919;
  --dbx-surface-dark-elevated: #2D2B29;
  --dbx-border: #D3CEC9;
  --dbx-border-soft: #EBE9E6;
  --dbx-success: #0F503C;
  --dbx-yellow: #FAD24B;
  --dbx-lime: #B4DC19;
  --dbx-orange: #FA551E;
  --dbx-pink: #C0154C;
  --dbx-purple: #C8AFF0;
  --font-display: "DM Sans", "Atlas Grotesk", system-ui, sans-serif;
  --font-body: "DM Sans", "Atlas Grotesk", system-ui, sans-serif;
  --r-xs: 4px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-pill: 9999px;
  --space-section: 96px;
  --space-hero: 128px;
  --container: 1200px;
  --shadow-mockup: 0 24px 48px rgba(30, 25, 25, 0.12), 0 8px 16px rgba(30, 25, 25, 0.06);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  color: var(--dbx-ink);
  background: var(--dbx-canvas);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--dbx-blue);
  text-decoration: none;
}

a:hover {
  color: var(--dbx-blue-hover);
}

:focus-visible {
  outline: 2px solid var(--dbx-blue);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 200;
  padding: 12px 16px;
  background: var(--dbx-blue);
  color: var(--dbx-canvas);
  border-radius: var(--r-md);
  font-weight: 500;
}

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
.nav-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--dbx-canvas-white);
  border-bottom: 1px solid var(--dbx-border-soft);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  color: var(--dbx-ink);
  text-decoration: none;
}

.nav-logo:hover {
  color: var(--dbx-ink);
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  background: var(--dbx-blue);
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-logo-icon svg {
  width: 18px;
  height: 18px;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--dbx-ink);
  font-size: 16px;
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--dbx-blue);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--dbx-border);
  border-radius: var(--r-md);
  background: var(--dbx-surface);
  cursor: pointer;
  color: var(--dbx-ink);
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
}

.mobile-menu {
  display: none;
  position: absolute;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--dbx-canvas-white);
  border-bottom: 1px solid var(--dbx-border);
  padding: 16px 24px 24px;
  box-shadow: 0 8px 24px rgba(30, 25, 25, 0.08);
}

.mobile-menu.is-open {
  display: block;
}

.mobile-menu ul {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.mobile-menu li {
  border-bottom: 1px solid var(--dbx-border-soft);
}

.mobile-menu a {
  display: block;
  padding: 14px 0;
  color: var(--dbx-ink);
  font-size: 16px;
}

.mobile-menu a:hover {
  color: var(--dbx-blue);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1;
  border-radius: var(--r-lg);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.btn-primary {
  background: var(--dbx-blue);
  color: var(--dbx-canvas);
  padding: 16px 24px;
}

.btn-primary:hover {
  background: var(--dbx-blue-hover);
  color: var(--dbx-canvas);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--dbx-ink);
  padding: 14px 22px;
  border: 1px solid var(--dbx-border);
}

.btn-secondary:hover {
  background: var(--dbx-surface-soft);
  color: var(--dbx-ink);
}

.btn-on-dark {
  background: var(--dbx-blue);
  color: var(--dbx-canvas);
  padding: 16px 24px;
}

.btn-on-dark:hover {
  background: var(--dbx-blue-hover);
  color: var(--dbx-canvas);
}

.btn-outline-light {
  background: transparent;
  color: var(--dbx-canvas);
  padding: 14px 22px;
  border: 1px solid rgba(247, 245, 242, 0.4);
}

.btn-outline-light:hover {
  background: rgba(247, 245, 242, 0.1);
  color: var(--dbx-canvas);
}

.btn-arrow::after {
  content: "→";
  transition: transform 0.15s ease;
}

.btn-arrow:hover::after {
  transform: translateX(3px);
}

.btn-sm {
  padding: 12px 20px;
  font-size: 15px;
}

/* Hero */
.hero {
  padding: 64px 0 var(--space-section);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--dbx-muted);
  margin-bottom: 16px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
  color: var(--dbx-ink);
}

.hero-title .brand {
  color: var(--dbx-blue);
  display: block;
}

.hero-lead {
  font-size: 20px;
  line-height: 1.5;
  color: var(--dbx-ink-soft);
  max-width: 540px;
  margin: 0 0 32px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.hero-bullets {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 16px;
  color: var(--dbx-muted-strong);
}

.hero-bullets li::before {
  content: "";
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  background: var(--dbx-blue-wash);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%230061FE'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-size: 14px;
  background-repeat: no-repeat;
  background-position: center;
}

/* Product mockup */
.hero-visual {
  position: relative;
  min-height: 320px;
}

.mockup-stack {
  position: relative;
  max-width: 520px;
  margin: 0 auto;
}

.mockup-desktop {
  background: var(--dbx-surface);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-mockup);
  border: 1px solid var(--dbx-border-soft);
  overflow: hidden;
}

.mockup-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--dbx-surface-soft);
  border-bottom: 1px solid var(--dbx-border-soft);
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--dbx-border);
}

.mockup-dot:nth-child(1) { background: #FA551E; }
.mockup-dot:nth-child(2) { background: var(--dbx-yellow); }
.mockup-dot:nth-child(3) { background: var(--dbx-lime); }

.mockup-url {
  flex: 1;
  margin-left: 8px;
  font-size: 12px;
  color: var(--dbx-muted);
  background: var(--dbx-surface);
  padding: 4px 12px;
  border-radius: var(--r-pill);
}

.mockup-body {
  padding: 24px;
}

.quiz-progress {
  margin-bottom: 20px;
}

.quiz-progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--dbx-muted);
  margin-bottom: 8px;
}

.quiz-progress-bar {
  height: 8px;
  background: var(--dbx-surface-soft);
  border-radius: var(--r-pill);
  overflow: hidden;
}

.quiz-progress-fill {
  height: 100%;
  width: 68%;
  background: var(--dbx-blue);
  border-radius: var(--r-pill);
}

.quiz-question {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  margin: 0 0 20px;
  color: var(--dbx-ink);
}

.quiz-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.quiz-option {
  padding: 14px 16px;
  background: var(--dbx-blue-wash);
  border: 2px solid transparent;
  border-radius: var(--r-md);
  font-size: 14px;
  color: var(--dbx-ink);
  text-align: center;
}

.quiz-option.selected {
  border-color: var(--dbx-blue);
  background: var(--dbx-blue-light);
}

.mockup-mobile {
  position: absolute;
  bottom: -24px;
  right: -8px;
  width: 140px;
  background: var(--dbx-surface);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-mockup);
  border: 1px solid var(--dbx-border-soft);
  overflow: hidden;
}

.mockup-mobile-header {
  padding: 8px 12px;
  background: var(--dbx-blue);
  color: var(--dbx-canvas);
  font-size: 11px;
  font-weight: 500;
  text-align: center;
}

.mockup-mobile-body {
  padding: 16px 12px;
  text-align: center;
}

.score-ring {
  width: 72px;
  height: 72px;
  margin: 0 auto 8px;
  border-radius: 50%;
  border: 4px solid var(--dbx-blue-light);
  border-top-color: var(--dbx-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--dbx-blue);
}

.score-label {
  font-size: 11px;
  color: var(--dbx-muted);
}

/* Trust strip */
.trust-strip {
  padding: 48px 0;
  background: var(--dbx-surface);
  border-top: 1px solid var(--dbx-border-soft);
  border-bottom: 1px solid var(--dbx-border-soft);
}

.trust-text {
  text-align: center;
  font-size: 18px;
  color: var(--dbx-muted-strong);
  margin: 0 0 32px;
}

.trust-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.trust-stat {
  text-align: center;
  padding: 20px;
  background: var(--dbx-canvas);
  border-radius: var(--r-lg);
  border: 1px solid var(--dbx-border-soft);
}

.trust-stat-value {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 500;
  color: var(--dbx-ink);
  margin: 0 0 4px;
}

.trust-stat-label {
  font-size: 14px;
  color: var(--dbx-muted);
  margin: 0;
}

/* Feature sections */
.feature-section {
  padding: var(--space-section) 0;
}

.feature-section:nth-child(even) {
  background: var(--dbx-canvas-white);
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

.feature-grid.reverse .feature-copy {
  order: 1;
}

.feature-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--dbx-blue);
  margin-bottom: 12px;
}

.feature-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}

.feature-text {
  font-size: 18px;
  color: var(--dbx-ink-soft);
  max-width: 520px;
  margin: 0 0 24px;
}

.feature-card {
  background: var(--dbx-surface);
  border: 1px solid var(--dbx-border-soft);
  border-radius: var(--r-xl);
  padding: 32px;
}

.feature-visual-inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.file-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--dbx-canvas);
  border-radius: var(--r-md);
  border: 1px solid var(--dbx-border-soft);
}

.file-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}

.file-icon.blue { background: var(--dbx-blue-wash); color: var(--dbx-blue); }
.file-icon.yellow { background: #FEF9E7; color: #9B6400; }
.file-icon.lime { background: #F4FBE8; color: var(--dbx-success); }
.file-icon.purple { background: #F5F0FC; color: #6B4F9A; }

.file-meta {
  flex: 1;
  min-width: 0;
}

.file-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--dbx-ink);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-sub {
  font-size: 12px;
  color: var(--dbx-muted);
  margin: 2px 0 0;
}

.file-badge {
  font-size: 11px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  background: var(--dbx-blue-wash);
  color: var(--dbx-blue);
  flex-shrink: 0;
}

/* Benefits grid */
.benefits-section {
  padding: var(--space-section) 0;
  background: var(--dbx-surface-soft);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 500;
  line-height: 1.3;
  margin: 0 0 16px;
}

.section-lead {
  font-size: 18px;
  color: var(--dbx-muted-strong);
  margin: 0;
}

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

.benefit-card {
  background: var(--dbx-surface);
  border: 1px solid var(--dbx-border-soft);
  border-radius: var(--r-lg);
  padding: 28px;
}

.benefit-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 22px;
}

.benefit-icon.blue { background: var(--dbx-blue-wash); }
.benefit-icon.yellow { background: #FEF9E7; }
.benefit-icon.lime { background: #F4FBE8; }
.benefit-icon.orange { background: #FEF0EB; }
.benefit-icon.purple { background: #F5F0FC; }
.benefit-icon.pink { background: #FCEEF3; }

.benefit-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  margin: 0 0 8px;
}

.benefit-card p {
  font-size: 16px;
  color: var(--dbx-muted-strong);
  margin: 0;
}

/* Dark security section */
.security-panel {
  padding: var(--space-section) 0;
  background: var(--dbx-surface-dark);
  color: var(--dbx-canvas);
}

.security-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

.security-icon {
  width: 56px;
  height: 56px;
  background: var(--dbx-surface-dark-elevated);
  border-radius: var(--r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.security-icon svg {
  width: 28px;
  height: 28px;
  color: var(--dbx-blue-light);
}

.security-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 500;
  line-height: 1.2;
  margin: 0 0 16px;
}

.security-text {
  font-size: 18px;
  color: rgba(247, 245, 242, 0.75);
  max-width: 520px;
  margin: 0 0 32px;
}

.security-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.testimonial-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.testimonial-card {
  background: var(--dbx-surface-dark-elevated);
  border-radius: var(--r-xl);
  padding: 28px;
  border: 1px solid rgba(247, 245, 242, 0.08);
}

.testimonial-quote {
  font-size: 16px;
  line-height: 1.6;
  color: rgba(247, 245, 242, 0.9);
  margin: 0 0 16px;
  font-style: italic;
}

.testimonial-author {
  font-size: 14px;
  color: rgba(247, 245, 242, 0.6);
  margin: 0;
}

.testimonial-author strong {
  color: var(--dbx-canvas);
  font-weight: 500;
}

/* Final CTA */
.final-cta {
  padding: var(--space-section) 0;
  text-align: center;
}

.final-cta-inner {
  background: var(--dbx-blue-wash);
  border: 1px solid var(--dbx-blue-light);
  border-radius: var(--r-xl);
  padding: 64px 32px;
  max-width: 800px;
  margin: 0 auto;
}

.final-cta-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 500;
  line-height: 1.2;
  margin: 0 0 16px;
}

.final-cta-text {
  font-size: 18px;
  color: var(--dbx-ink-soft);
  max-width: 480px;
  margin: 0 auto 32px;
}

/* Footer */
.site-footer {
  background: var(--dbx-surface-dark);
  color: rgba(247, 245, 242, 0.7);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--dbx-canvas);
  margin: 0 0 12px;
}

.footer-tagline {
  font-size: 14px;
  margin: 0;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--dbx-canvas);
  margin: 0 0 16px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

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

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: rgba(247, 245, 242, 0.7);
  font-size: 14px;
  text-decoration: none;
}

.footer-col a:hover {
  color: var(--dbx-canvas);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(247, 245, 242, 0.1);
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
}

.footer-bottom a {
  color: rgba(247, 245, 242, 0.5);
}

.footer-bottom a:hover {
  color: var(--dbx-canvas);
}

/* Responsive */
@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .hero {
    padding: var(--space-hero) 0 var(--space-section);
  }

  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }

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

  .feature-grid {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }

  .feature-grid.reverse .feature-copy {
    order: 0;
  }

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

  .security-grid {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .mockup-mobile {
    right: -24px;
    width: 160px;
  }
}