/* === Design Tokens === */
:root {
  --rs-navy:       #0f1729;
  --rs-slate:      #1e293b;
  --rs-white:      #f8fafc;
  --rs-teal:       #14b8a6;
  --rs-teal-dark:  #0d9488;
  --rs-green:      #22c55e;
  --rs-amber:      #f59e0b;
  --rs-muted:      #94a3b8;
  --rs-border:     #334155;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

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

  --max-width: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--rs-white);
  background: var(--rs-navy);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; display: block; }
a { color: var(--rs-teal); text-decoration: none; }
a:hover { color: var(--rs-teal-dark); }

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

.hidden { display: none !important; }

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  background: var(--rs-teal);
  color: var(--rs-navy);
  padding: var(--space-xs) var(--space-sm);
  border-radius: 4px;
  font-weight: 500;
  z-index: 1000;
}
.skip-link:focus {
  top: var(--space-sm);
}

.section-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  margin-bottom: var(--space-lg);
  text-align: center;
  line-height: 1.25;
}

/* === Buttons === */
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1rem;
  padding: 0.75rem 1.75rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  text-align: center;
  transition: background 0.2s, transform 0.1s;
}
.btn:active { transform: scale(0.98); }

.btn--primary {
  background: var(--rs-teal);
  color: var(--rs-navy);
}
.btn--primary:hover {
  background: var(--rs-teal-dark);
  color: var(--rs-navy);
}

.btn--ghost {
  background: transparent;
  color: var(--rs-teal);
  border: 1.5px solid var(--rs-teal);
}
.btn--ghost:hover {
  background: rgba(20, 184, 166, 0.1);
  color: var(--rs-teal);
}

.btn--sm { padding: 0.5rem 1.25rem; font-size: 0.875rem; }
.btn--lg { padding: 0.875rem 2rem; font-size: 1.05rem; width: 100%; }

/* === Navigation === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-sm) 0;
  background: rgba(15, 23, 41, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s;
}
.nav--scrolled {
  background: rgba(15, 23, 41, 0.95);
  border-bottom-color: var(--rs-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--rs-white);
  text-decoration: none;
}
.nav__logo:hover { color: var(--rs-white); }
.nav__logo svg { flex-shrink: 0; }

.nav__wordmark {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* === Hero === */
.hero {
  position: relative;
  padding: calc(var(--space-2xl) + 60px) 0 var(--space-2xl);
  overflow: hidden;
  text-align: center;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(51, 65, 85, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(51, 65, 85, 0.15) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 100%);
  pointer-events: none;
}

.hero__title {
  font-size: clamp(2rem, 6vw, 3.25rem);
  font-weight: 700;
  line-height: 1.15;
  max-width: 720px;
  margin: 0 auto var(--space-xs);
}

.hero__subtitle {
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 2vw, 1rem);
  color: var(--rs-teal);
  margin-bottom: var(--space-md);
  letter-spacing: 0.02em;
}

.hero__body {
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  color: var(--rs-muted);
  max-width: 600px;
  margin: 0 auto var(--space-lg);
  line-height: 1.7;
}

.hero__ctas {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* === Problems === */
.problems {
  padding: var(--space-2xl) 0;
  background: var(--rs-slate);
}

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

.problems__card {
  text-align: center;
}

.problems__icon {
  color: var(--rs-teal);
  margin-bottom: var(--space-sm);
}

.problems__card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.problems__card p {
  color: var(--rs-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* === Steps === */
.steps {
  padding: var(--space-2xl) 0;
}

.steps__grid {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
}

.steps__item {
  text-align: center;
  flex: 1;
  max-width: 320px;
  padding: 0 var(--space-sm);
}

.steps__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--rs-teal);
  color: var(--rs-navy);
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
}

.steps__item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.steps__item p {
  color: var(--rs-muted);
  font-size: 0.95rem;
}

.steps__connector {
  width: 60px;
  height: 2px;
  background: var(--rs-border);
  margin-top: 23px;
  flex-shrink: 0;
}

/* === Step Mockups === */
.steps__mockup {
  margin-top: var(--space-md);
}

.mockup-doc {
  background: var(--rs-slate);
  border: 1px solid var(--rs-border);
  border-radius: 8px;
  overflow: hidden;
  font-size: 0.72rem;
  text-align: left;
}

.mockup-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: rgba(15, 23, 41, 0.6);
  border-bottom: 1px solid var(--rs-border);
}

.mockup-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.mockup-dot--red { background: #ef4444; }
.mockup-dot--amber { background: var(--rs-amber); }
.mockup-dot--green { background: var(--rs-green); }

.mockup-filename {
  margin-left: 6px;
  color: var(--rs-muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
}

/* Spreadsheet mockup */
.mockup-sheet {
  padding: 4px 0;
}

.mockup-row {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid rgba(51, 65, 85, 0.4);
}
.mockup-row:last-child { border-bottom: none; }

.mockup-row--header {
  background: rgba(15, 23, 41, 0.5);
  font-weight: 600;
  color: var(--rs-muted);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mockup-row--faded { opacity: 0.4; }

.mockup-cell {
  padding: 6px 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--rs-muted);
  border-right: 1px solid rgba(51, 65, 85, 0.3);
}
.mockup-cell:last-child { border-right: none; }

.mockup-cell--num { width: 28px; flex-shrink: 0; text-align: center; color: rgba(148, 163, 184, 0.5); }
.mockup-cell--q { flex: 1.2; color: var(--rs-white); opacity: 0.85; }
.mockup-cell--a { flex: 1; }
.mockup-cell--empty {
  background: repeating-linear-gradient(
    90deg,
    rgba(51, 65, 85, 0.3) 0px,
    rgba(51, 65, 85, 0.3) 20px,
    transparent 20px,
    transparent 28px
  );
}
.mockup-cell--done {
  color: var(--rs-green);
  opacity: 0.8;
}

.mockup-count {
  padding: 6px 12px;
  text-align: center;
  color: var(--rs-muted);
  opacity: 0.5;
  font-size: 0.65rem;
  font-style: italic;
}

.mockup-row--filled .mockup-cell--q { color: var(--rs-white); opacity: 0.7; }

/* Review interface mockup */
.mockup-review-list {
  padding: 4px 0;
}

.mockup-review-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid rgba(51, 65, 85, 0.4);
}
.mockup-review-row:last-child { border-bottom: none; }

.mockup-confidence {
  width: 4px;
  height: 32px;
  border-radius: 2px;
  flex-shrink: 0;
}
.mockup-confidence--green { background: var(--rs-green); }
.mockup-confidence--amber { background: var(--rs-amber); }
.mockup-confidence--red { background: #ef4444; }

.mockup-review-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mockup-review-q {
  color: var(--rs-white);
  opacity: 0.85;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mockup-review-a {
  color: var(--rs-muted);
  font-size: 0.65rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mockup-badge {
  flex-shrink: 0;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.6rem;
  font-weight: 700;
  font-family: var(--font-mono);
}
.mockup-badge--green { background: rgba(34, 197, 94, 0.15); color: var(--rs-green); }
.mockup-badge--amber { background: rgba(245, 158, 11, 0.15); color: var(--rs-amber); }

/* Export bar */
.mockup-export-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 12px;
  background: rgba(34, 197, 94, 0.08);
  border-top: 1px solid rgba(34, 197, 94, 0.2);
  color: var(--rs-green);
  font-size: 0.7rem;
  font-weight: 600;
}

/* === Features === */
.features {
  padding: var(--space-2xl) 0;
  background: var(--rs-slate);
}

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

.features__card {
  background: var(--rs-navy);
  border: 1px solid var(--rs-border);
  border-radius: 10px;
  padding: var(--space-lg);
  transition: transform 0.2s, border-color 0.2s;
}
.features__card:hover {
  transform: translateY(-2px);
  border-color: var(--rs-teal);
}

.features__icon {
  color: var(--rs-teal);
  margin-bottom: var(--space-sm);
}

.features__card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.features__card p {
  color: var(--rs-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* === Comparison === */
.comparison {
  padding: var(--space-2xl) 0;
  background: var(--rs-slate);
}

.comparison__intro {
  text-align: center;
  color: var(--rs-muted);
  max-width: 640px;
  margin: 0 auto var(--space-lg);
  font-size: 1.05rem;
  line-height: 1.7;
}

.comparison__table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.comparison__table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--rs-navy);
  border: 1px solid var(--rs-border);
  border-radius: 10px;
  overflow: hidden;
  font-size: 0.925rem;
}

.comparison__table thead th {
  padding: var(--space-sm) var(--space-md);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 2px solid var(--rs-border);
  text-align: left;
}

.comparison__feature-col { width: 28%; color: var(--rs-muted); }
.comparison__chatgpt-col { width: 36%; color: var(--rs-muted); }
.comparison__replisec-col { width: 36%; color: var(--rs-teal); }

.comparison__table tbody td {
  padding: 0.85rem var(--space-md);
  border-bottom: 1px solid rgba(51, 65, 85, 0.5);
  color: var(--rs-muted);
  line-height: 1.5;
  vertical-align: top;
}

.comparison__table tbody tr:last-child td {
  border-bottom: none;
}

.comparison__table tbody td:first-child {
  color: var(--rs-white);
  font-weight: 500;
}

.comparison__table tbody tr {
  transition: background 0.15s;
}

.comparison__table tbody tr:hover {
  background: rgba(20, 184, 166, 0.04);
}

.comparison__icon {
  display: inline-block;
  width: 1.1em;
  font-weight: 700;
  margin-right: 0.35em;
}

.comparison__icon--yes { color: var(--rs-green); }
.comparison__icon--no { color: #ef4444; }

.comparison__row--cost td {
  font-weight: 600;
  color: var(--rs-white) !important;
  padding-top: var(--space-sm);
  padding-bottom: var(--space-sm);
}

/* Mobile cards — hidden on desktop */
.comparison__cards {
  display: none;
}

.comparison__card {
  background: var(--rs-navy);
  border: 1px solid var(--rs-border);
  border-radius: 10px;
  padding: var(--space-md);
  margin-bottom: var(--space-sm);
}

.comparison__card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--rs-white);
}

.comparison__card-row {
  font-size: 0.9rem;
  color: var(--rs-muted);
  padding: 0.35rem 0;
  line-height: 1.5;
}

.comparison__card-row strong {
  color: var(--rs-white);
}

.comparison__card--cost {
  border-color: rgba(20, 184, 166, 0.3);
}

.comparison__footer {
  text-align: center;
  color: var(--rs-muted);
  font-size: 1.05rem;
  margin-top: var(--space-lg);
  font-style: italic;
}

/* === Audience === */
.audience {
  padding: var(--space-2xl) 0;
}

.audience__list {
  list-style: none;
  max-width: 640px;
  margin: 0 auto;
}

.audience__list li {
  position: relative;
  padding: var(--space-sm) 0 var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--rs-border);
  color: var(--rs-muted);
  font-size: 1rem;
}
.audience__list li:last-child { border-bottom: none; }

.audience__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--rs-teal);
}

.audience__list strong {
  color: var(--rs-white);
}

/* === Waitlist === */
.waitlist {
  padding: var(--space-2xl) 0;
  background: var(--rs-slate);
}

.waitlist__intro {
  text-align: center;
  color: var(--rs-muted);
  margin-bottom: var(--space-lg);
  font-size: 1.05rem;
}

.waitlist__form {
  max-width: 440px;
  margin: 0 auto;
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.3rem;
  color: var(--rs-white);
}

.form-optional {
  color: var(--rs-muted);
  font-weight: 400;
}

.form-group input {
  width: 100%;
  padding: 0.7rem 0.9rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  border: 1px solid var(--rs-border);
  border-radius: 6px;
  background: var(--rs-navy);
  color: var(--rs-white);
  transition: border-color 0.2s;
}
.form-group input::placeholder { color: var(--rs-muted); opacity: 0.7; }
.form-group input:focus {
  outline: none;
  border-color: var(--rs-teal);
  box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.15);
}

.waitlist__form .btn--lg {
  margin-top: var(--space-sm);
}

.waitlist__privacy {
  text-align: center;
  color: var(--rs-muted);
  font-size: 0.8rem;
  margin-top: var(--space-sm);
}

.waitlist__success {
  text-align: center;
  max-width: 440px;
  margin: 0 auto;
}
.waitlist__success svg { margin: 0 auto var(--space-sm); }
.waitlist__success h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-xs);
}
.waitlist__success p {
  color: var(--rs-muted);
}

/* === Footer === */
.footer {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--rs-border);
  text-align: center;
}

.footer__brand {
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.footer__sovereignty {
  font-size: 0.85rem;
  color: var(--rs-muted);
  margin-bottom: var(--space-sm);
}

.footer__links {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.footer__links a {
  font-size: 0.875rem;
  color: var(--rs-muted);
}
.footer__links a:hover { color: var(--rs-teal); }

.footer__copy {
  font-size: 0.8rem;
  color: var(--rs-muted);
  opacity: 0.7;
}

/* === Responsive === */
@media (max-width: 768px) {
  .problems__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .steps__grid {
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
  }
  .steps__connector {
    width: 2px;
    height: 32px;
    margin: 0;
  }
  .steps__item { max-width: 400px; }

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

  .comparison__table-wrap {
    display: none;
  }
  .comparison__cards {
    display: block;
  }

  .hero__ctas {
    flex-direction: column;
    align-items: center;
  }
  .hero__ctas .btn { width: 100%; max-width: 280px; }

  .btn--lg { font-size: 1rem; }
}

@media (max-width: 480px) {
  .hero { padding-top: calc(var(--space-xl) + 60px); padding-bottom: var(--space-xl); }
  .problems, .steps, .features, .audience, .waitlist { padding: var(--space-xl) 0; }
}