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

:root {
  --bg: #0d0d0e;
  --bg-alt: #141416;
  --bg-card: #18181a;
  --fg: #f4f4ef;
  --fg-muted: #9a9a96;
  --fg-dim: #5a5a56;
  --accent: #c8f564;
  --accent-dim: rgba(200, 245, 100, 0.12);
  --border: rgba(244, 244, 239, 0.08);
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --radius: 10px;
  --max-w: 1160px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: var(--accent); color: #0d0d0e; }

/* ─── Nav ─────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 24px;
  border-bottom: var(--border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(13,13,14,0.82);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.nav-status {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.8rem;
  color: var(--fg-muted);
  font-family: var(--font-body);
}
.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(200,245,100,0.6);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px rgba(200,245,100,0.6); }
  50% { opacity: 0.65; box-shadow: 0 0 16px rgba(200,245,100,0.3); }
}

/* ─── Hero ─────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(200,245,100,0.055) 0%, transparent 70%);
  pointer-events: none;
}
.hero-eyebrow {
  margin-bottom: 24px;
}
.eyebrow-text {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(200,245,100,0.25);
  padding: 5px 12px;
  border-radius: 100px;
}
.hero-headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.2rem, 8vw, 7rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 28px;
  max-width: 760px;
}
.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 580px;
  line-height: 1.65;
  margin-bottom: 56px;
}
.br-desktop { display: none; }
@media (min-width: 768px) { .br-desktop { display: inline; } }

.hero-visual {
  max-width: 680px;
  margin-bottom: 48px;
}
.inbox-mock {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.04) inset;
}
.mock-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 14px 18px;
  border-bottom: var(--border);
  background: var(--bg-card);
}
.mock-dot {
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--fg-dim);
}
.mock-dot:nth-child(1) { background: #ff5f57; }
.mock-dot:nth-child(2) { background: #febc2e; }
.mock-dot:nth-child(3) { background: #28c840; }
.mock-title {
  font-size: 0.78rem;
  color: var(--fg-muted);
  font-weight: 500;
  margin-left: 8px;
  letter-spacing: 0.04em;
}
.mock-thread {
  padding: 8px 0;
}
.mock-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px;
  border-bottom: var(--border);
  transition: background 0.15s;
}
.mock-row:last-child { border-bottom: none; }
.mock-row:hover { background: rgba(255,255,255,0.02); }
.mock-row.unread { background: rgba(200,245,100,0.03); }
.mock-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--fg-muted);
  flex-shrink: 0;
}
.mock-avatar.empty { background: var(--accent-dim); color: var(--accent); }
.mock-content { flex: 1; min-width: 0; }
.mock-sender {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--fg);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.mock-row.unread .mock-sender { color: var(--fg); }
.mock-subject {
  font-size: 0.78rem;
  color: var(--fg-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}
.mock-preview {
  font-size: 0.75rem;
  color: var(--fg-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 1px;
}
.mock-badge {
  font-size: 0.68rem;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: 100px;
  flex-shrink: 0;
}
.relay-resolved { background: rgba(200,245,100,0.12); color: var(--accent); }
.relay-replied { background: rgba(180,180,255,0.12); color: #b4b4ff; }
.relay-drafting { background: rgba(255,200,100,0.12); color: #ffc864; }
.relay-scheduled { background: rgba(100,210,255,0.12); color: #64d2ff; }

.hero-aside {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}
.stat-block {}
.stat-number {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.8rem;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--fg);
}
.stat-label {
  font-size: 0.78rem;
  color: var(--fg-muted);
  margin-top: 6px;
  max-width: 140px;
  line-height: 1.4;
}

/* ─── Manifesto ─────────────────────────────────────────────── */
.manifesto {
  background: var(--bg-alt);
  border-top: var(--border);
  border-bottom: var(--border);
  padding: 100px 24px;
}
.manifesto-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}
@media (min-width: 860px) {
  .manifesto-inner { grid-template-columns: 1fr auto; align-items: start; }
  .manifesto-divider { display: none; }
}
.manifesto-overline {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 20px;
}
.manifesto-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--fg);
  margin-bottom: 24px;
}
.manifesto-body {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 580px;
}
.manifesto-divider {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin: 32px 0;
}
.manifesto-aside {}
.manifesto-statement {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--accent);
  max-width: 340px;
}

/* ─── Features ─────────────────────────────────────────────── */
.features {
  padding: 100px 24px;
}
.features-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.features-header {
  margin-bottom: 64px;
}
.section-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.features-headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--fg);
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
@media (min-width: 640px) { .features-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .features-grid { grid-template-columns: 1fr 1fr 1fr; } }
.feature-card {
  background: var(--bg);
  padding: 36px 32px;
  transition: background 0.2s;
}
.feature-card:hover { background: var(--bg-alt); }
.feature-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--accent-dim);
  border: 1px solid rgba(200,245,100,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
}
.feature-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--fg);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.feature-desc {
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ─── How It Works ────────────────────────────────────────── */
.how-it-works {
  background: var(--bg-alt);
  border-top: var(--border);
  border-bottom: var(--border);
  padding: 100px 24px;
}
.hiw-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.hiw-header { margin-bottom: 64px; }
.hiw-headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--fg);
}
.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}
@media (min-width: 768px) {
  .steps { flex-direction: row; align-items: flex-start; }
  .step-connector { flex-direction: row; padding: 20px 24px; }
}
.step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 28px 0;
  border-bottom: var(--border);
}
.step:last-child { border-bottom: none; }
@media (min-width: 768px) {
  .step { flex: 1; border-bottom: none; padding: 0; }
}
.step-number {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.8rem;
  letter-spacing: -0.04em;
  color: var(--accent);
  line-height: 1;
  flex-shrink: 0;
  width: 44px;
}
.step-body {}
.step-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--fg);
  margin-bottom: 8px;
}
.step-desc {
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.65;
}
.step-connector {
  display: none;
}
@media (min-width: 768px) {
  .step-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 8px;
    flex-shrink: 0;
    width: 60px;
  }
}
.connector-line {
  flex: 1;
  width: 1px;
  background: var(--border);
  min-height: 40px;
}
.connector-arrow {
  color: var(--fg-dim);
  padding: 8px 0;
}

/* ─── Difference ───────────────────────────────────────────── */
.difference {
  padding: 100px 24px;
}
.diff-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.diff-header {
  margin-bottom: 56px;
}
.diff-headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 20px;
}
.diff-sub {
  font-size: 1rem;
  color: var(--fg-muted);
  max-width: 640px;
  line-height: 1.7;
}
.diff-table {
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}
.diff-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  border-bottom: var(--border);
}
.diff-row:last-child { border-bottom: none; }
.diff-row.diff-header-row {
  background: var(--bg-card);
}
.diff-col {
  padding: 18px 22px;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
}
.diff-col-label {
  color: var(--fg-muted);
  font-size: 0.85rem;
}
.diff-col-other, .diff-col-relay {
  font-weight: 600;
  font-size: 0.8rem;
  justify-content: center;
}
.diff-col-other { color: var(--fg-dim); }
.diff-col-relay { color: var(--accent); }
.diff-no { color: #4a4a46; }
.diff-yes { color: var(--accent); }

/* ─── Closing ──────────────────────────────────────────────── */
.closing {
  background: linear-gradient(135deg, #0f0f10 0%, #131308 100%);
  border-top: var(--border);
  padding: 100px 24px 120px;
}
.closing-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  text-align: center;
}
.closing-eyebrow { margin-bottom: 28px; }
.closing-headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--fg);
  margin-bottom: 28px;
}
.closing-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.75;
}

/* ─── Footer ───────────────────────────────────────────────── */
.footer {
  border-top: var(--border);
  padding: 48px 24px;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  text-align: center;
}
.footer-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 10px;
}
.footer-tagline {
  font-size: 0.85rem;
  color: var(--fg-dim);
  margin-bottom: 20px;
}
.footer-meta {
  font-size: 0.75rem;
  color: var(--fg-dim);
  display: flex;
  justify-content: center;
  gap: 8px;
  align-items: center;
}
.footer-sep { color: var(--fg-dim); }

/* ─── Responsive adjustments ────────────────────────────────── */
@media (max-width: 640px) {
  .hero { padding: 100px 20px 64px; }
  .hero-headline { font-size: 2.8rem; }
  .hero-aside { gap: 28px; }
  .stat-number { font-size: 2.2rem; }
  .manifesto { padding: 72px 20px; }
  .features { padding: 72px 20px; }
  .feature-card { padding: 28px 22px; }
  .hiw { padding: 72px 20px; }
  .difference { padding: 72px 20px; }
  .closing { padding: 72px 20px 96px; }
  .diff-table { font-size: 0.8rem; }
  .diff-col { padding: 14px 12px; }
}

/* ─── Custom scrollbar ─────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--fg-dim); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--fg-muted); }