/* Par Not Far Style Guide */
:root {
  --pnf-primary: #1B4F42;
  --pnf-accent: #4DAA8A;
  --pnf-highlight: #E6B842;
  --pnf-bg: #F4EFE5;
  --pnf-text: #1B4F42;
  --pnf-text-muted: rgba(27, 79, 66, 0.75);
  --font-heading: 'Montserrat', 'Sora', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius: 12px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--pnf-text);
  background: var(--pnf-bg);
  -webkit-font-smoothing: antialiased;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-narrow {
  max-width: 480px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--pnf-bg);
  border-bottom: 1px solid rgba(27, 79, 66, 0.1);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-sm) var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--pnf-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-cta {
  font-family: var(--font-body);
  font-weight: 500;
  padding: var(--space-xs) var(--space-md);
  background: var(--pnf-primary);
  color: var(--pnf-bg);
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.2s, transform 0.1s;
}

.nav-cta:hover {
  background: #153d33;
}

.nav-cta:active {
  transform: scale(0.98);
}

/* Hero */
.hero {
  padding: var(--space-xl) var(--space-md) var(--space-lg);
  text-align: center;
}

.hero-inner {
  max-width: 640px;
  margin: 0 auto;
}

.hero-headline {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
  color: var(--pnf-primary);
  margin: 0 0 var(--space-md);
  letter-spacing: -0.03em;
}

.hero-subhead {
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--pnf-text-muted);
  margin: 0 0 var(--space-lg);
}

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn-primary {
  background: var(--pnf-primary);
  color: var(--pnf-bg);
}

.btn-primary:hover {
  background: #153d33;
}

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

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

.section-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  color: var(--pnf-primary);
  margin: 0 0 var(--space-md);
  letter-spacing: -0.02em;
}

.section-text {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--pnf-text-muted);
  margin: 0 0 var(--space-md);
}

/* Benefits */
.section-benefits {
  background: rgba(27, 79, 66, 0.04);
}

.benefits-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-md);
}

.benefit {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.benefit-label {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1rem;
  color: var(--pnf-accent);
  min-width: 5rem;
}

.benefit-desc {
  color: var(--pnf-text-muted);
  font-size: 1rem;
}

/* How it works */
.human-block {
  margin-top: var(--space-lg);
  padding: var(--space-md);
  background: rgba(77, 170, 138, 0.08);
  border-radius: var(--radius);
  border-left: 4px solid var(--pnf-accent);
}

.human-block p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--pnf-text);
}

/* Screenshots */
.section-preview {
  background: rgba(27, 79, 66, 0.04);
}

.screenshots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-md) 0;
}

.screenshot {
  margin: 0;
}

.screenshot img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid rgba(27, 79, 66, 0.15);
}

.screenshot figcaption {
  margin-top: var(--space-xs);
  font-size: 0.875rem;
  color: var(--pnf-text-muted);
}

.section-note {
  font-size: 0.875rem;
  color: var(--pnf-text-muted);
  margin-top: var(--space-md);
}

.section-note code {
  background: rgba(27, 79, 66, 0.1);
  padding: 0.125rem 0.375rem;
  border-radius: 4px;
  font-size: 0.8em;
}

/* Closing */
.closing-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--pnf-primary);
  text-align: center;
  margin: 0;
}

/* Waitlist form */
.section-waitlist {
  background: var(--pnf-primary);
  color: var(--pnf-bg);
}

.section-waitlist .section-title,
.section-waitlist .section-text {
  color: var(--pnf-bg);
}

.section-waitlist .section-text {
  opacity: 0.9;
}

.waitlist-form {
  margin-top: var(--space-lg);
}

.form-group {
  margin-bottom: var(--space-sm);
}

.form-group input {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  padding: var(--space-sm) var(--space-md);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
  color: var(--pnf-bg);
  outline: none;
  transition: border-color 0.2s, background 0.2s;
}

.form-group input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.form-group input:focus {
  border-color: var(--pnf-highlight);
  background: rgba(255, 255, 255, 0.15);
}

.btn-submit {
  width: 100%;
  background: var(--pnf-highlight);
  color: var(--pnf-primary);
}

.btn-submit:hover {
  background: #d4a83a;
}

.btn-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.form-message {
  margin-top: var(--space-sm);
  font-size: 0.9375rem;
}

.form-message.success {
  color: rgba(255, 255, 255, 0.95);
}

.form-message.error {
  color: #ffb3b3;
}

/* Footer */
.footer {
  padding: var(--space-lg) var(--space-md);
  border-top: 1px solid rgba(27, 79, 66, 0.1);
}

.footer p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--pnf-text-muted);
  text-align: center;
}

/* Responsive */
@media (min-width: 640px) {
  .hero {
    padding: var(--space-xl) var(--space-md) 4rem;
  }

  .hero-subhead {
    font-size: 1.25rem;
  }

  .section {
    padding: 3rem 0;
  }

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

  .benefit {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .benefit-label {
    min-width: auto;
  }
}