/* ---- Landing Nav ---- */

.landing-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 247, 242, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 3.5rem;
}

.logo {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.04em;
}

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

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.15s;
  letter-spacing: 0.02em;
}

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

.nav-cta {
  background: var(--orange);
  color: #fff !important;
  padding: 0.375rem 0.875rem;
  border-radius: 0.375rem;
  font-size: 0.8125rem;
  transition: background 0.15s, transform 0.15s;
}

.nav-cta:hover {
  background: var(--orange-hover);
  transform: translateY(-1px);
}

/* ---- Hamburger Button ---- */

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  margin-right: -0.5rem;
}

.nav-hamburger span {
  display: block;
  width: 1.25rem;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform 0.2s, opacity 0.2s;
}

@media (max-width: 640px) {
  .nav-hamburger {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(250, 247, 242, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem 1rem;
    gap: 0;
  }

  .nav-links--open {
    display: flex;
  }

  .nav-links a {
    padding: 0.625rem 0;
    font-size: 0.9375rem;
  }

  .nav-cta {
    margin-top: 0.5rem;
    text-align: center;
  }
}

/* ---- Hero ---- */

.hero {
  padding: calc(3.5rem + var(--space-xl)) 0 var(--space-lg);
}

.hero-grid {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.hero-text {
  flex: 1;
  animation: fadeUp 0.6s ease both;
}

.hero-visual {
  flex: 0 0 340px;
  animation: fadeUp 0.6s ease 0.2s both;
}

.hero h1 {
  font-size: clamp(2.25rem, 4.5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-top: var(--space-sm);
  line-height: 1.55;
  max-width: 26rem;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  margin-top: var(--space-md);
  background: var(--orange);
  color: #fff;
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.75rem;
  border-radius: 0.375rem;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}

.hero-cta:hover {
  background: var(--orange-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(234, 88, 12, 0.25);
}

/* ---- Illustration ---- */

.illustration {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 0.75rem;
  overflow: hidden;
}

.illustration img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (max-width: 900px) {
  .hero-grid {
    flex-direction: column;
    text-align: center;
  }

  .hero-sub {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-visual {
    flex: none;
    width: 100%;
    max-width: 320px;
  }

  .hero-cta {
    display: block;
    text-align: center;
    max-width: 18rem;
    margin-left: auto;
    margin-right: auto;
  }
}

/* ---- Code Block ---- */

.code-block {
  margin: var(--space-lg) auto 0;
  max-width: 42rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--blue);
  border-radius: 0.5rem;
  padding: 1.25rem 1.5rem;
  text-align: left;
  overflow-x: auto;
}

.code-block pre {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-secondary);
  white-space: pre;
}

.code-prompt {
  color: var(--text-muted);
  user-select: none;
}

.code-url {
  color: var(--blue);
}

.code-string {
  color: var(--orange);
}

.code-flag {
  color: var(--text-muted);
}

/* ---- Spec Row ---- */

.spec-row {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 0.875rem 0;
}

.spec-list {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.25rem 0;
  align-items: center;
}

.spec-list li {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.25rem 0.875rem;
  letter-spacing: 0.01em;
}

.spec-list li + li::before {
  content: "\00b7";
  margin-right: 0.875rem;
  color: var(--text-muted);
  opacity: 0.4;
  font-weight: 700;
}

/* ---- How It Works ---- */

.how-it-works {
  padding: var(--space-xl) 0;
}

.how-it-works h2 {
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: var(--space-lg);
}

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

.step {
  text-align: center;
}

.step-number {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
}

.step h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.375rem;
}

.step p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.step code {
  font-family: var(--mono);
  font-size: 0.8125rem;
  background: var(--bg-subtle);
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  color: var(--blue);
}

.step-code {
  margin: var(--space-sm) 0 0;
  max-width: none;
  text-align: left;
}

.step-code pre {
  font-size: 0.8125rem;
  line-height: 1.6;
}

@media (max-width: 900px) {
  .steps-grid {
    grid-template-columns: 1fr;
    max-width: 24rem;
    margin: 0 auto;
    gap: var(--space-lg);
  }
}

/* ---- Model Summary ---- */

.model-summary {
  padding: var(--space-lg) 0 var(--space-xl);
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.model-summary h2 {
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: var(--space-lg);
}

.model-pair {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  max-width: 40rem;
  margin: 0 auto;
}

.model-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1.5rem;
}

.model-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.375rem;
}

.model-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.model-footnote {
  text-align: center;
  margin-top: var(--space-sm);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .model-pair {
    grid-template-columns: 1fr;
  }
}

/* ---- Use Cases ---- */

.use-cases {
  padding: var(--space-xl) 0 var(--space-2xl);
}

.use-cases h2 {
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: var(--space-lg);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.use-case {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1.5rem;
}

.use-case h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.375rem;
}

.use-case p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.use-case a {
  color: var(--blue);
  font-weight: 500;
  transition: color 0.15s;
}

.use-case a:hover {
  color: var(--blue-hover);
}

@media (max-width: 640px) {
  .use-cases-grid {
    grid-template-columns: 1fr;
  }

  .use-cases h2 {
    font-size: 1.375rem;
  }
}

/* ---- Pain / Solution ---- */

.pain-solution {
  padding: var(--space-xl) 0 var(--space-2xl);
}

.pain-solution h2 {
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: var(--space-lg);
}

.pain-solution-layout {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
}

.pain-solution-content {
  flex: 1;
}

.pain-solution-visual {
  flex: 0 0 280px;
}

.pain-solution-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

@media (max-width: 900px) {
  .pain-solution-layout {
    flex-direction: column;
    align-items: center;
  }

  .pain-solution-visual {
    flex: none;
    width: 100%;
    max-width: 240px;
  }

  .pain-solution-grid {
    flex-direction: row;
    gap: var(--space-md);
  }
}

@media (max-width: 640px) {
  .pain-solution-grid {
    flex-direction: column;
  }
}

.pain-solution-card {
  flex: 1;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1.5rem;
}

.card-label {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.card-label--before {
  color: #B91C1C;
}

.card-label--after {
  color: var(--blue);
}

.pain-item {
  padding: 0.5rem 0;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.pain-item + .pain-item {
  border-top: 1px solid var(--border);
}

.pain-dash,
.solution-dash {
  margin-right: 0.375rem;
  font-weight: 500;
}

.pain-dash {
  color: #B91C1C;
}

.solution-dash {
  color: var(--blue);
}

/* ---- Pricing ---- */

.pricing {
  padding: var(--space-2xl) 0;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.pricing-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.pricing-header h2 {
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.pricing-header p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-top: 0.375rem;
}

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

.pricing-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}

.pricing-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.pricing-card--featured {
  border-color: var(--blue);
  box-shadow: 0 0 0 1px var(--blue);
}

.pricing-card--featured:hover {
  box-shadow: 0 0 0 1px var(--blue), 0 4px 16px rgba(37, 99, 235, 0.12);
}

.pricing-badge {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  font-size: 0.625rem;
  font-weight: 600;
  padding: 0.1875rem 0.5rem;
  border-radius: 0.25rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  width: fit-content;
}

.pricing-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.pricing-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  line-height: 1.5;
}

.pricing-amount {
  margin-top: var(--space-md);
  margin-bottom: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

.price {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1;
}

.period {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 400;
}

.pricing-highlights {
  list-style: none;
  margin-bottom: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.pricing-highlights li {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.pricing-cta {
  display: block;
  text-align: center;
  padding: 0.6875rem;
  border-radius: 0.375rem;
  font-weight: 500;
  font-size: 0.875rem;
  transition: background 0.2s, border-color 0.15s, color 0.15s, transform 0.15s;
  margin-top: auto;
}

.pricing-cta--ghost {
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.pricing-cta--ghost:hover {
  border-color: var(--text-muted);
  color: var(--text-primary);
}

.pricing-cta--filled {
  background: var(--orange);
  color: #fff;
  font-weight: 600;
}

.pricing-cta--filled:hover {
  background: var(--orange-hover);
  transform: translateY(-1px);
}

.pricing-note {
  text-align: center;
  margin-top: var(--space-sm);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.pricing-note a {
  color: var(--blue);
}

@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 28rem;
    margin: 0 auto;
  }

  .pricing-card--featured {
    order: -1;
  }
}

/* ---- Early Access ---- */

.early-access {
  padding: var(--space-xl) 0 var(--space-2xl);
}

.early-access-layout {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.early-access-visual {
  flex: 0 0 240px;
}

.early-access-inner {
  flex: 1;
}

@media (max-width: 900px) {
  .early-access-layout {
    flex-direction: column;
  }

  .early-access-visual {
    flex: none;
    width: 100%;
    max-width: 200px;
    margin: 0 auto;
  }

  .early-access-inner {
    text-align: center;
  }

  .early-access-form {
    justify-content: center;
  }
}

.early-access h2 {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.early-access p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-top: 0.375rem;
  line-height: 1.6;
  max-width: 30rem;
}

.early-access-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: var(--space-sm);
  max-width: 26rem;
}

.early-access-form .form-input {
  flex: 1;
}

.early-access-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.early-access-confirmation {
  padding: var(--space-md) 0;
}

.early-access-confirmation p {
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--green);
}

.early-access-error {
  margin-bottom: var(--space-xs);
}

.early-access-signup {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

.early-access-signup p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.early-access-signup a {
  color: var(--blue);
  font-weight: 600;
  transition: color 0.15s;
}

.early-access-signup a:hover {
  color: var(--blue-hover);
}

.early-access-remind-note {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.early-access-form .form-checkbox {
  width: 100%;
  margin-top: 0.375rem;
  margin-bottom: 0;
}

@media (max-width: 640px) {
  .early-access-form {
    flex-direction: column;
  }
}

/* ---- Landing Footer ---- */

.landing-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-md) 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.footer-tagline {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  flex: 1;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
}

.footer-links a {
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: color 0.15s;
}

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

@media (max-width: 640px) {
  .footer-inner {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

/* ---- Animations ---- */

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---- Mobile Overrides ---- */

@media (max-width: 640px) {
  .hero h1 {
    font-size: clamp(1.75rem, 7vw, 2.25rem);
  }

  .hero-sub {
    font-size: 1rem;
  }

  .code-block {
    padding: 1rem;
    border-radius: 0.375rem;
  }

  .code-block pre {
    font-size: 0.75rem;
    line-height: 1.6;
  }

  .spec-list li {
    font-size: 0.6875rem;
    padding: 0.25rem 0.5rem;
  }

  .spec-list li + li::before {
    margin-right: 0.5rem;
  }

  .how-it-works h2 {
    font-size: 1.375rem;
  }

  .model-summary h2 {
    font-size: 1.375rem;
  }

  .model-card {
    padding: 1.25rem;
  }

  .pain-solution h2 {
    font-size: 1.375rem;
  }

  .pain-solution-card {
    padding: 1.25rem;
  }

  .pricing-header h2 {
    font-size: 1.375rem;
  }

  .pricing-header p {
    font-size: 1rem;
  }

  .pricing-card {
    padding: 1.5rem;
  }

  .early-access h2 {
    font-size: 1.375rem;
  }

  .early-access-form {
    max-width: none;
  }

  .footer-tagline {
    font-size: 0.75rem;
  }
}