/* ============================================================
   DataStopOS — Landing Page Theme
   Fonts: Instrument Serif (display), Satoshi (body), IBM Plex Mono
   ============================================================ */

:root {
  --bg: #080b10;
  --surface: #0f1520;
  --surface-2: #141c28;
  --border: #1c2839;
  --border-bright: #253448;
  --text: #e2e8f2;
  --text-muted: #6a7f99;
  --text-dim: #3d5168;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.1);
  --accent-glow: rgba(0, 212, 170, 0.2);
  --amber: #f59e0b;
  --amber-dim: rgba(245, 158, 11, 0.12);
  --red: #f87171;
  --font-head: 'Instrument Serif', Georgia, serif;
  --font-body: 'Satoshi', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;
}

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

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
.mono { font-family: var(--font-mono); }
.serif { font-family: var(--font-head); }

.section-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.section-headline {
  font-family: var(--font-head);
  font-size: clamp(28px, 4.5vw, 48px);
  font-weight: 400;
  line-height: 1.08;
  color: var(--text);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.section-body {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 500px;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #080b10;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 14px;
  padding: 12px 28px;
  border-radius: 6px;
  letter-spacing: 0.01em;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}
.btn-primary:hover {
  background: #00f5c0;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0, 212, 170, 0.25);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  display: inline-block;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  padding: 12px 24px;
  border-radius: 6px;
  border: 1px solid var(--border-bright);
  transition: all 0.2s ease;
  letter-spacing: 0.01em;
}
.btn-ghost:hover {
  color: var(--text);
  border-color: var(--text-muted);
  transform: translateY(-1px);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 56px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(8, 11, 16, 0.92);
  backdrop-filter: blur(12px);
  z-index: 100;
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.03em;
}

.brand-mark {
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.brand-name { color: var(--text); }

.topbar-right {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  transition: color 0.2s;
  letter-spacing: 0.02em;
}
.nav-link:hover { color: var(--text); }

.compliance-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(0, 212, 170, 0.2);
  padding: 5px 12px;
  border-radius: 20px;
  transition: all 0.2s;
}
.compliance-badge:hover {
  background: rgba(0, 212, 170, 0.18);
  border-color: rgba(0, 212, 170, 0.35);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  padding: 96px 56px 120px;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}

.hero-grid { max-width: 560px; }

.hero-reg-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  background: var(--amber-dim);
  border: 1px solid rgba(245, 158, 11, 0.2);
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 28px;
}

.reg-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero-headline {
  font-family: var(--font-head);
  font-size: clamp(38px, 5.5vw, 62px);
  font-weight: 400;
  line-height: 1.05;
  color: var(--text);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 460px;
  line-height: 1.75;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 36px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.stat-label {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ENFORCEMENT BLOCK */
.hero-visual { display: flex; justify-content: flex-end; }

.enforcement-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4), 0 1px 0 rgba(255,255,255,0.04) inset;
}

.block-header {
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.block-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
}
.block-row:last-of-type { border-bottom: none; }

.block-icon { flex-shrink: 0; width: 20px; display: flex; align-items: center; justify-content: center; }

.block-info { flex: 1; min-width: 0; }
.block-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text);
  margin-bottom: 2px;
}
.block-meta {
  font-size: 10px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.block-badge {
  font-size: 9px;
  padding: 3px 9px;
  border-radius: 10px;
  white-space: nowrap;
  flex-shrink: 0;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(0, 212, 170, 0.15);
}
.block-badge-amber {
  background: var(--amber-dim);
  color: var(--amber);
  border-color: rgba(245, 158, 11, 0.15);
}

.block-footer {
  font-size: 9px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  text-align: center;
}

/* ============================================================
   WHAT IT DOES — THREE-TIER VALUE PROPOSITION
   ============================================================ */
.what-it-does {
  padding: 100px 56px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.tier-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  margin-top: 52px;
}

.tier {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  position: relative;
  transition: border-color 0.2s, transform 0.2s;
}
.tier:hover {
  transform: translateY(-2px);
}

.tier-primary {
  border-top: 2px solid var(--accent);
}
.tier-primary:hover { border-color: var(--accent); }

.tier-secondary {
  border-top: 2px solid rgba(0, 212, 170, 0.4);
}
.tier-secondary:hover { border-color: rgba(0, 212, 170, 0.6); }

.tier-tertiary {
  border-top: 2px solid rgba(0, 212, 170, 0.2);
}
.tier-tertiary:hover { border-color: rgba(0, 212, 170, 0.4); }

.tier-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.tier-num {
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}
.tier-tag {
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--accent-dim);
  color: var(--accent);
}

.tier h3 {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 14px;
}

.tier-accent {
  color: var(--accent);
  font-style: italic;
}

.tier > p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.tier-proof { display: flex; flex-direction: column; gap: 10px; }

.proof-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 8px;
  align-items: start;
}

.proof-label {
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding-top: 2px;
}

.proof-val {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ============================================================
   MSP PORTAL
   ============================================================ */
.msp-portal {
  padding: 100px 56px;
}

.portal-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}

/* Revenue Model */
.revenue-model {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  margin: 28px 0;
}

.model-header {
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.model-row {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 20px;
}

.model-phase { flex: 1; }

.phase-label {
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  display: block;
  margin-bottom: 6px;
}

.phase-deal {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  color: var(--text);
  line-height: 1;
  margin-bottom: 4px;
}

.phase-unit {
  font-size: 16px;
  color: var(--text-dim);
}

.phase-note {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
}

.model-arrow { display: flex; align-items: center; justify-content: center; }

.model-calc {
  background: var(--surface-2);
  border-radius: 8px;
  padding: 16px;
}

.calc-label {
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.calc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.calc-row:last-child { border-bottom: none; }

.calc-item { color: var(--text-muted); }
.calc-val { font-family: var(--font-mono); font-size: 12px; color: var(--text); }
.calc-val.teal { color: var(--accent); }
.calc-row-total { padding-top: 10px; }

/* Portal list */
.portal-list {
  list-style: none;
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.portal-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}
.list-check { flex-shrink: 0; margin-top: 2px; }

/* MSP Dashboard */
.portal-visual { display: flex; justify-content: flex-start; }

.msp-dash {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  width: 100%;
  max-width: 400px;
}

.dash-header {
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.dash-metric { margin-bottom: 20px; }
.metric-val { font-family: var(--font-mono); font-size: 28px; font-weight: 600; }
.metric-val.teal { color: var(--accent); }
.metric-label { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

.dash-bar-row { margin-bottom: 10px; }
.dash-bar {
  height: 5px;
  background: var(--surface-2);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 6px;
}
.bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
}
.bar-fill-amber { background: var(--amber); }
.bar-label {
  font-size: 10px;
  color: var(--text-muted);
}

.dash-alert {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 10px;
  background: var(--amber-dim);
  border-radius: 6px;
  font-size: 11px;
  color: var(--amber);
}

/* ============================================================
   COMPLIANCE
   ============================================================ */
.compliance-section {
  padding: 100px 56px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.compliance-inner { max-width: 800px; margin: 0 auto; }
.compliance-tag { margin-bottom: 16px; }

.compliance-headline {
  font-family: var(--font-head);
  font-size: clamp(28px, 4.5vw, 48px);
  font-weight: 400;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.compliance-body {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 48px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* Timeline */
.compliance-timeline {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 64px;
  padding: 32px 40px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.timeline-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  max-width: 280px;
}

.timeline-date {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(0, 212, 170, 0.2);
  padding: 4px 12px;
  border-radius: 20px;
}

.timeline-event {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  text-align: center;
}

/* Compliance Facts */
.compliance-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}

.fact-num {
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.fact-text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ============================================================
   INVESTOR SECTION
   ============================================================ */
.investor-section {
  padding: 100px 56px;
}

.investor-inner { max-width: 1200px; margin: 0 auto; }

.investor-headline {
  font-family: var(--font-head);
  font-size: clamp(30px, 4.5vw, 50px);
  font-weight: 400;
  line-height: 1.08;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.investor-lead {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 620px;
  margin-bottom: 56px;
}

.investor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 56px;
}

.inv-col { display: flex; flex-direction: column; gap: 16px; }

.inv-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
}

.inv-block-accent {
  border-color: rgba(0, 212, 170, 0.12);
}

.inv-num {
  font-size: 36px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.inv-label {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.4;
  margin-bottom: 4px;
}
.inv-src {
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.inv-tag {
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.inv-block h3 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 10px;
}

.inv-block p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.inv-model-table { display: flex; flex-direction: column; gap: 0; }

.inv-model-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.inv-model-row:last-child { border-bottom: none; }
.inv-model-key { color: var(--text-muted); }
.inv-model-val { font-family: var(--font-mono); color: var(--text); }
.inv-model-val.teal { color: var(--accent); }

/* Investor Ask */
.inv-ask {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 40px 44px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  border-top: 2px solid var(--accent);
}

.ask-text h3 {
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 8px;
}
.ask-text p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 480px;
}

/* ============================================================
   CLOSING
   ============================================================ */
.closing-section {
  padding: 100px 56px;
  text-align: center;
}

.closing-inner { max-width: 700px; margin: 0 auto; }

.closing-tag {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.closing-headline {
  font-family: var(--font-head);
  font-size: clamp(32px, 5vw, 54px);
  font-weight: 400;
  line-height: 1.08;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.closing-body {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 40px;
}

.closing-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 48px 56px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 1400px;
  margin: 0 auto;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 24px;
  font-size: 12px;
  color: var(--text-muted);
}
.footer-links a:hover { color: var(--text); }

.footer-tagline {
  font-size: 12px;
  color: var(--text-dim);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
  .tier-grid { grid-template-columns: 1fr 1fr; }
  .investor-grid { grid-template-columns: 1fr; }
  .inv-col:first-child { display: grid; grid-template-columns: 1fr 1fr 1fr; }
}

@media (max-width: 900px) {
  .topbar { padding: 16px 28px; }
  .hero { grid-template-columns: 1fr; gap: 48px; padding: 60px 28px 80px; }
  .hero-visual { justify-content: flex-start; }
  .enforcement-block { max-width: 100%; }
  .what-it-does { padding: 72px 28px; }
  .tier-grid { grid-template-columns: 1fr; }
  .msp-portal { padding: 72px 28px; }
  .portal-split { grid-template-columns: 1fr; gap: 40px; }
  .compliance-section { padding: 72px 28px; }
  .compliance-timeline { flex-direction: column; gap: 20px; }
  .compliance-facts { grid-template-columns: 1fr; gap: 24px; }
  .investor-section { padding: 72px 28px; }
  .inv-col:first-child { grid-template-columns: 1fr; }
  .inv-ask { flex-direction: column; gap: 24px; text-align: center; }
  .closing-section { padding: 72px 28px; }
  .site-footer { padding: 36px 28px; }
  .hero-stats { gap: 24px; }
  .topbar-right { gap: 16px; }
}

@media (max-width: 600px) {
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-ghost { width: 100%; text-align: center; justify-content: center; }
  .closing-actions { flex-direction: column; width: 100%; }
  .nav-link { display: none; }
}