/* ==========================================================================
   Weekend Launch Page — Om Singh
   Dark, clean, technical. Mobile-first. Green accent.
   ========================================================================== */

:root {
  --bg-primary: #0c0c0e;
  --bg-raised: #141416;
  --bg-card: #1a1a1e;
  --bg-card-hover: #202024;
  --border: #2a2a30;
  --border-subtle: #1e1e24;

  --text-primary: #e8e6e3;
  --text-secondary: #9b9a97;
  --text-muted: #6b6a67;

  --accent: #3dd68c;
  --accent-hover: #2fbc7a;
  --accent-dim: rgba(61, 214, 140, 0.10);

  --space-2xs: 0.125rem;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  --text-xs: 0.8125rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.75rem;
  --text-3xl: 2.25rem;

  --leading-tight: 1.25;
  --leading-normal: 1.6;

  --max-width: 720px;
  --radius: 6px;
  --radius-lg: 10px;
  --transition: 150ms ease;
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--accent-hover); }

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

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

section {
  padding: var(--space-3xl) var(--space-md);
  border-bottom: 1px solid var(--border-subtle);
}
section:last-of-type { border-bottom: none; }

/* --- Section Typography --- */
.section-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.section-heading {
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.section-desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  max-width: 560px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition),
    border-color var(--transition);
  text-decoration: none;
  line-height: 1;
}

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

.btn-secondary {
  background-color: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--text-muted);
  color: var(--text-primary);
}

/* ==========================================================================
   1. HERO
   ========================================================================== */
.hero {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

.hero-tag {
  font-size: var(--text-xs);
  color: var(--text-muted);
  letter-spacing: 0.03em;
  margin-bottom: var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.hero-tag span.sep {
  color: var(--border);
}

.hero-name {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.hero-headline {
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.hero-sub {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 520px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* ==========================================================================
   2. AUDIENCE
   ========================================================================== */
.audience-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.audience-item {
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  color: var(--text-primary);
  transition: border-color var(--transition);
}
.audience-item:hover { border-color: var(--border); }
.audience-item strong { color: var(--accent); }

/* ==========================================================================
   3. OFFER
   ========================================================================== */
.build-list {
  list-style: none;
  margin-top: var(--space-lg);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xs);
}

.build-list li {
  font-size: var(--text-base);
  color: var(--text-secondary);
  padding: var(--space-sm) 0;
  padding-left: var(--space-lg);
  position: relative;
}

.build-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 600;
}

/* ==========================================================================
   4. INCLUDED
   ========================================================================== */
.included-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-lg);
}

.included-block h3 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.included-block.excluded h3 { color: var(--text-muted); }

.check-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.check-list li {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  padding-left: var(--space-lg);
  position: relative;
}

.check-list li::before {
  position: absolute;
  left: 0;
  font-weight: 700;
}

.included-block:not(.excluded) .check-list li::before {
  content: "✓";
  color: var(--accent);
}

.included-block.excluded .check-list li::before {
  content: "✗";
  color: var(--text-muted);
}

/* ==========================================================================
   5. APPROACH
   ========================================================================== */
.approach-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.approach-card {
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
}

.approach-card h3 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.approach-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* ==========================================================================
   6. DEMOS
   ========================================================================== */
.demo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.demo-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: border-color var(--transition);
}
.demo-card:hover { border-color: var(--border); }

.demo-card-type {
  font-size: var(--text-xs);
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-sm);
}

.demo-card h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.demo-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.demo-card-footer {
  font-size: var(--text-xs);
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.demo-card-footer a { font-weight: 600; font-size: var(--text-xs); }

/* ==========================================================================
   7. ABOUT
   ========================================================================== */
.about-body {
  margin-top: var(--space-md);
}

.about-body p {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  max-width: 560px;
}
.about-body p:last-child { margin-bottom: 0; }

/* ==========================================================================
   8. FINAL CTA
   ========================================================================== */
.final-cta {
  background: var(--bg-raised);
  text-align: center;
}

.final-cta .section-desc {
  margin: 0 auto var(--space-xl);
  text-align: center;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}

.cta-email {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-lg);
}

.cta-email a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.cta-email a:hover { color: var(--text-primary); }

/* ==========================================================================
   9. FOOTER
   ========================================================================== */
.site-footer {
  padding: var(--space-xl) var(--space-md);
  border-top: 1px solid var(--border-subtle);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer-id {
  font-size: var(--text-sm);
  color: var(--text-muted);
}
.footer-id strong {
  color: var(--text-secondary);
  font-weight: 600;
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}
.footer-links a {
  font-size: var(--text-sm);
  color: var(--text-muted);
}
.footer-links a:hover { color: var(--text-primary); }

.footer-note {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (min-width: 640px) {
  .audience-grid { grid-template-columns: 1fr 1fr; }
  .build-list { grid-template-columns: 1fr 1fr; }
  .included-grid { grid-template-columns: 1fr 1fr; }
  .approach-grid { grid-template-columns: 1fr 1fr; }
  .demo-grid { grid-template-columns: 1fr 1fr; }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

@media (min-width: 960px) {
  .approach-grid { grid-template-columns: 1fr 1fr 1fr; }
}