/* ============================================================
   Pulse — Marketing Landing Page
   Design direction: "Editorial warmth"
   Fonts: Lora (display/headings), Manrope (body)
   Accent: coral/terracotta (#E85D3A)
   ============================================================ */

/* --- Reset & Variables --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #FAFAF8;
  --color-bg-alt: #F0EFEB;
  --color-surface: #FFFFFF;
  --color-text: #1a1a1a;
  --color-text-secondary: #555;
  --color-text-muted: #888;
  --color-accent: #E85D3A;
  --color-accent-hover: #D14E2E;
  --color-accent-light: #FFF0EC;
  --color-green: #2D8A56;
  --color-green-light: #E8F5EE;
  --color-red: #C4483E;
  --color-red-light: #FCEEED;
  --color-border: #E5E4E0;
  --font-display: 'Lora', Georgia, serif;
  --font-body: 'Manrope', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-width: 1080px;
  --section-padding: 6rem 1.5rem;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Typography --- */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.15;
}

h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  letter-spacing: -0.015em;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.3;
}

p {
  max-width: 60ch;
}

/* --- Shared Utilities --- */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header p {
  margin: 0.75rem auto 0;
  color: var(--color-text-secondary);
  font-size: 1.1rem;
}

.section-sub {
  color: var(--color-text-secondary);
}

.section-cta {
  text-align: center;
  margin-top: 2.5rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border-radius: 8px;
  padding: 0.8rem 1.8rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(232, 93, 58, 0.3);
}

.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-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  padding: 0.8rem 1rem;
}

.btn-ghost:hover {
  color: var(--color-text);
}

.btn-sm {
  font-size: 0.875rem;
  padding: 0.5rem 1.2rem;
}

/* --- Nav --- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 248, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}

.nav.scrolled {
  border-bottom-color: var(--color-border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.875rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.nav-logo img {
  height: 32px;
  width: auto;
  display: block;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.15s;
}

.nav-link:hover {
  color: var(--color-text);
}

/* --- Hero --- */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.trust-pill {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 1.25rem;
}

.hero-headline {
  font-size: clamp(2.75rem, 5.5vw, 4rem);
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
}

.hero-headline em {
  font-style: italic;
  color: var(--color-accent);
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  max-width: 44ch;
}

.hero-ctas {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.hero-fine {
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.arrow-down {
  display: inline-block;
  transition: transform 0.2s;
}

.btn-secondary:hover .arrow-down {
  transform: translateY(2px);
}

/* --- App Preview (screenshot placeholder) --- */
.hero-visual {
  display: flex;
  justify-content: center;
}

.app-preview {
  width: 100%;
  max-width: 420px;
  background: var(--color-surface);
  border-radius: 12px;
  border: 1px solid var(--color-border);
  box-shadow:
    0 1px 2px rgba(0,0,0,0.04),
    0 4px 16px rgba(0,0,0,0.06),
    0 12px 40px rgba(0,0,0,0.04);
  overflow: hidden;
}

.app-preview-bar {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.75rem 1rem;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}

.app-preview-bar .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
}

.app-preview-title {
  margin-left: 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.app-preview-body {
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.preview-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.875rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
}

.preview-item--active {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}

.preview-badge {
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.preview-badge--auto {
  background: var(--color-green-light);
  color: var(--color-green);
}

.preview-badge--review {
  background: var(--color-red-light);
  color: var(--color-red);
}

.preview-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.preview-line {
  height: 8px;
  border-radius: 4px;
  background: var(--color-border);
}

.preview-item--active .preview-line {
  background: rgba(232, 93, 58, 0.2);
}

.preview-line--title {
  width: 60%;
  height: 10px;
}

.preview-line--short {
  width: 45%;
}

/* --- Platform Logos --- */
.platforms {
  padding: 3rem 1.5rem 4rem;
  text-align: center;
}

.platforms-label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
  max-width: none;
}

.platform-logos {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.platform-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.platform-logo:hover {
  color: var(--color-text);
}

.platform-logo span {
  font-size: 0.75rem;
  font-weight: 500;
}

/* --- Comparison Section --- */
.comparison {
  padding: var(--section-padding);
  background: var(--color-bg-alt);
}

.comparison-cards {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.comparison-card {
  background: var(--color-surface);
  border-radius: 12px;
  padding: 2rem;
  border: 1px solid var(--color-border);
}

.comparison-card h3 {
  font-size: 1.35rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.comparison-card--new {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.comparison-card--new h3 {
  color: var(--color-accent);
}

.comparison-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.comparison-card--old .comparison-list li {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.comparison-task {
  color: var(--color-text-secondary);
  flex: 1;
}

.comparison-time {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-red);
  background: var(--color-red-light);
  padding: 0.15rem 0.6rem;
  border-radius: 100px;
  white-space: nowrap;
}

.comparison-list--new li {
  padding-left: 1.5rem;
  position: relative;
  color: var(--color-text-secondary);
}

.comparison-list--new li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--color-green);
  font-weight: 700;
}

.comparison-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
  font-weight: 600;
}

.comparison-total-value {
  font-family: var(--font-display);
  font-size: 1.5rem;
}

.comparison-total-value--bad {
  color: var(--color-red);
}

.comparison-total-value--good {
  color: var(--color-green);
}

/* --- How It Works --- */
.how-it-works {
  padding: var(--section-padding);
  max-width: var(--max-width);
  margin: 0 auto;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.step {
  text-align: center;
  padding: 2rem 1.5rem;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin-bottom: 1.25rem;
}

.step h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.step p {
  color: var(--color-text-secondary);
  margin: 0 auto;
  font-size: 0.9375rem;
}

/* --- Benefits --- */
.benefits {
  padding: var(--section-padding);
  background: var(--color-bg-alt);
}

.benefits-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.benefit-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2rem;
}

.benefit-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 10px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.benefit-card h3 {
  margin-bottom: 0.5rem;
}

.benefit-card p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* --- FAQ --- */
.faq {
  padding: var(--section-padding);
  max-width: var(--max-width);
  margin: 0 auto;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.faq-card {
  padding: 2rem;
  background: var(--color-bg-alt);
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.faq-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  font-family: var(--font-body);
  font-weight: 600;
}

.faq-card p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* --- Final CTA --- */
.final-cta {
  padding: 5rem 1.5rem;
  text-align: center;
  background: var(--color-text);
  color: var(--color-bg);
}

.final-cta h2 {
  color: var(--color-bg);
  margin-bottom: 0.75rem;
}

.final-cta p {
  color: rgba(250, 250, 248, 0.7);
  font-size: 1.1rem;
  margin: 0 auto 2rem;
}

.final-cta-buttons {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.final-cta .btn-primary {
  box-shadow: 0 4px 16px rgba(232, 93, 58, 0.4);
}

.final-cta .btn-ghost {
  color: rgba(250, 250, 248, 0.6);
}

.final-cta .btn-ghost:hover {
  color: var(--color-bg);
}

/* --- Footer --- */
.footer {
  padding: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
}

.footer-logo img {
  height: 24px;
  width: auto;
  display: block;
  opacity: 0.5;
  transition: opacity 0.15s;
}

.footer-logo:hover img {
  opacity: 0.8;
}

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

.footer-right {
  display: flex;
  align-items: center;
}

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

.footer-built a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

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

/* --- Animations (scroll-reveal) --- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children within grids */
.reveal-stagger .reveal {
  transition-delay: calc(var(--i, 0) * 0.08s);
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* --- Responsive --- */
@media (max-width: 768px) {
  :root {
    --section-padding: 4rem 1.25rem;
  }

  .hero {
    grid-template-columns: 1fr;
    padding: 3rem 1.25rem 2rem;
    text-align: center;
  }

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

  .hero-ctas {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
    margin-bottom: 1rem;
  }

  .app-preview {
    max-width: 340px;
  }

  .comparison-cards {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .benefits-grid {
    grid-template-columns: 1fr;
  }

  .faq-grid {
    grid-template-columns: 1fr;
  }

  .platform-logos {
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero-headline {
    font-size: 2.25rem;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
  }

  .nav-link {
    display: none;
  }
}

/* --- Invite Code Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--color-surface);
  border-radius: 16px;
  padding: 2.5rem;
  max-width: 420px;
  width: calc(100% - 2rem);
  position: relative;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  transform: translateY(8px);
  transition: transform 0.2s ease;
}

.modal-overlay.open .modal {
  transform: translateY(0);
}

.modal h2 {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.modal-sub {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: 1.5rem;
  max-width: none;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 0.25rem;
}

.modal-close:hover {
  color: var(--color-text);
}

.modal-form {
  display: flex;
  gap: 0.75rem;
}

.modal-form input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  outline: none;
  transition: border-color 0.15s;
}

.modal-form input:focus {
  border-color: var(--color-accent);
}

.modal-submit {
  flex-shrink: 0;
}

.modal-error {
  color: var(--color-red);
  font-size: 0.8125rem;
  margin-top: 0.75rem;
  min-height: 1.2em;
  max-width: none;
}

.modal-hint {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  margin-top: 1rem;
  max-width: none;
}