@import url('design-system.css');

/* ─── Navigation ─── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background: var(--color-surface);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--duration-medium), border-color var(--duration-medium);
}

.nav.scrolled {
  border-bottom-color: var(--color-border-light);
  box-shadow: var(--elevation-nav);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-links a:not(.btn) {
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background var(--duration-short), color var(--duration-short);
}

.nav-links a:not(.btn):hover {
  color: var(--color-text);
  background: var(--google-grey-100);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: var(--space-4);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  color: var(--color-text-secondary);
}

.nav-toggle:hover { background: var(--google-grey-100); }

/* ─── Hero ─── */
.hero {
  padding: calc(var(--nav-height) + var(--space-20)) 0 var(--space-20);
  background: var(--color-bg);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.hero-eyebrow .material-symbols-outlined { font-size: 18px; }

.hero h1 {
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-5);
}

.hero-sub {
  font-size: 18px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  max-width: 520px;
  margin-bottom: var(--space-8);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: 13px;
  color: var(--color-text-tertiary);
}

.hero-trust span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-trust .material-symbols-outlined {
  font-size: 16px;
  color: var(--google-green);
}

/* Product preview */
.hero-visual {
  position: relative;
}

.product-preview {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--elevation-3);
  overflow: hidden;
}

.preview-chrome {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--google-grey-50);
  border-bottom: 1px solid var(--color-border-light);
}

.preview-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--google-grey-300);
}

.preview-dot:nth-child(1) { background: #EA4335; }
.preview-dot:nth-child(2) { background: #FBBC04; }
.preview-dot:nth-child(3) { background: #34A853; }

.preview-url {
  flex: 1;
  margin-left: var(--space-3);
  padding: 6px 12px;
  background: var(--color-surface);
  border-radius: var(--radius-full);
  font-size: 12px;
  color: var(--color-text-tertiary);
  font-family: var(--font-mono);
}

.preview-body { padding: var(--space-5); }

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-5);
}

.preview-header h4 {
  font-size: 14px;
  font-weight: 500;
}

.preview-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.preview-stat {
  padding: var(--space-3);
  background: var(--google-grey-50);
  border-radius: var(--radius-md);
}

.preview-stat-label {
  font-size: 11px;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.preview-stat-value {
  font-size: 20px;
  font-weight: 500;
  color: var(--color-text);
}

.preview-bars { display: flex; flex-direction: column; gap: var(--space-3); }

.preview-bar-row {
  display: grid;
  grid-template-columns: 100px 1fr 36px;
  align-items: center;
  gap: var(--space-3);
  font-size: 13px;
}

.preview-bar-label { color: var(--color-text-secondary); }

.preview-bar-track {
  height: 8px;
  background: var(--google-grey-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.preview-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: var(--color-primary);
}

.preview-bar-value {
  font-weight: 500;
  text-align: right;
  color: var(--color-text);
}

.preview-bar-fill.green { background: var(--google-green); }
.preview-bar-fill.yellow { background: var(--google-yellow); }

/* Code block */
.code-block {
  background: #1E1F20;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--elevation-2);
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: #292A2D;
  border-bottom: 1px solid #3C4043;
}

.code-block-tabs {
  display: flex;
  gap: var(--space-1);
}

.code-tab {
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  color: #9AA0A6;
  border-radius: var(--radius-sm);
  cursor: default;
}

.code-tab.active {
  background: #3C4043;
  color: #E8EAED;
}

.code-block pre {
  padding: var(--space-5);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: #E8EAED;
}

.code-comment { color: #9AA0A6; }
.code-keyword { color: #8AB4F8; }
.code-fn { color: #FDD663; }
.code-string { color: #81C995; }
.code-prop { color: #FF8BCB; }

/* ─── Sections ─── */
.section {
  padding: var(--space-24) 0;
}

.section-alt {
  background: var(--google-grey-50);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-16);
}

.section-header h2 {
  font-size: clamp(32px, 4vw, 40px);
  font-weight: 400;
  margin-bottom: var(--space-4);
}

.section-header p {
  font-size: 18px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.section-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.feature-card {
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--duration-medium), transform var(--duration-medium);
}

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

.feature-icon-wrap {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--google-blue-container);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
}

.feature-icon-wrap .material-symbols-outlined {
  font-size: 24px;
  color: var(--color-primary);
}

.feature-icon-wrap.green { background: var(--google-green-container); }
.feature-icon-wrap.green .material-symbols-outlined { color: var(--google-green); }

.feature-card h3 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.feature-card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Steps */
.steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.step-card {
  text-align: center;
  padding: var(--space-8);
}

.step-number {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 500;
  color: var(--color-primary);
  background: var(--google-blue-container);
  border-radius: 50%;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.step-card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* SDK section */
.sdk-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-12);
  align-items: center;
}

.sdk-copy h2 {
  font-size: 36px;
  margin-bottom: var(--space-4);
}

.sdk-copy p {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.sdk-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.sdk-features li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 15px;
  color: var(--color-text-secondary);
}

.sdk-features .material-symbols-outlined {
  font-size: 20px;
  color: var(--google-green);
}

/* Security */
.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.security-card {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
}

.security-card .material-symbols-outlined {
  color: var(--color-primary);
  flex-shrink: 0;
}

.security-card strong {
  display: block;
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 2px;
}

.security-card span {
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.pricing-card {
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  position: relative;
}

.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--elevation-2);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
}

.pricing-card h3 {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.price {
  font-size: 48px;
  font-weight: 400;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}

.price span {
  font-size: 16px;
  color: var(--color-text-tertiary);
}

.pricing-card ul {
  list-style: none;
  margin-bottom: var(--space-8);
}

.pricing-card li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.pricing-card li .material-symbols-outlined {
  font-size: 18px;
  color: var(--google-green);
}

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

/* Contact */
.contact-section {
  background: var(--google-grey-900);
  color: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: var(--space-16);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

.contact-section h2 {
  font-size: 36px;
  color: #FFFFFF;
  margin-bottom: var(--space-4);
}

.contact-section .muted {
  color: #9AA0A6;
  font-size: 17px;
  line-height: 1.6;
}

.contact-form {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.contact-form .form-group label { color: var(--color-text-secondary); }

/* Footer */
.footer {
  padding: var(--space-16) 0 var(--space-8);
  border-top: 1px solid var(--color-border-light);
  background: var(--color-surface);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-10);
  margin-bottom: var(--space-10);
}

.footer .logo { margin-bottom: var(--space-4); }

.footer-tagline {
  font-size: 14px;
  color: var(--color-text-secondary);
  max-width: 280px;
  line-height: 1.6;
}

.footer h4 {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-4);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  font-size: 14px;
  color: var(--color-text-secondary);
  text-decoration: none;
}

.footer-links a:hover { color: var(--color-primary); }

.footer-bottom {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--color-text-tertiary);
}

.footer-legal {
  display: flex;
  gap: var(--space-6);
}

.footer-legal a {
  color: var(--color-text-tertiary);
  text-decoration: none;
}

.footer-legal a:hover { color: var(--color-text-secondary); }

/* CTA band */
.cta-band {
  text-align: center;
  padding: var(--space-16) var(--space-6);
  background: var(--google-blue-container);
  border-radius: var(--radius-xl);
  margin: 0 var(--space-6);
}

.cta-band h2 {
  font-size: 32px;
  margin-bottom: var(--space-4);
}

.cta-band p {
  font-size: 17px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid,
  .sdk-layout,
  .features-grid,
  .security-grid,
  .pricing-grid,
  .steps-row { grid-template-columns: 1fr; }

  .hero-visual { order: -1; }
  .contact-section { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-4);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: var(--elevation-2);
  }

  .nav-links.open { display: flex; }
  .nav-actions { margin-left: 0; margin-top: var(--space-2); flex-direction: column; }
  .nav-actions .btn { width: 100%; }
  .nav-toggle { display: flex; }

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