/* ============================================================
   ALTRACE DESIGN SYSTEM
   ============================================================ */

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

:root {
  /* Colors */
  --bg: #fafaf8;
  --surface: #ffffff;
  --border: #e5e5e0;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --accent-glow: rgba(99, 102, 241, 0.12);
  --text-primary: #1a1a1a;
  --text-secondary: #525252;
  --text-muted: #94a3b8;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  /* Typography */
  --font-heading: 'Fraunces', 'DM Serif Display', Georgia, serif;
  --font-body: 'Instrument Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', 'JetBrains Mono', monospace;

  /* Spacing */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 16px;
  --sp-4: 24px;
  --sp-5: 32px;
  --sp-6: 48px;
  --sp-7: 64px;
  --sp-8: 96px;

  /* Radius */
  --radius-card: 8px;
  --radius-btn: 6px;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; font-family: var(--font-body); font-weight: 600; }

p {
  color: var(--text-secondary);
  line-height: 1.7;
}

.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent); }

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--sp-4);
}

/* --- Section --- */
section {
  padding: var(--sp-8) 0;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: var(--sp-3);
}

.section-title {
  margin-bottom: var(--sp-3);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 640px;
}

.section-header {
  text-align: center;
  margin-bottom: var(--sp-7);
}

.section-header .section-subtitle {
  margin: 0 auto;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s var(--ease);
}

.nav.scrolled {
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--sp-4);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.nav-logo-svg {
  height: 28px;
  width: auto;
  display: block;
}

.footer .nav-logo-svg {
  height: 22px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s var(--ease);
  position: relative;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-2);
}

.nav-hamburger span {
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all 0.3s var(--ease);
}

.nav-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: #ffffff;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  padding: var(--sp-6) var(--sp-4);
}

.nav-mobile.open {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.nav-mobile a {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s var(--ease);
}

.nav-mobile a:hover {
  color: var(--text-primary);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  transition: all 0.2s var(--ease);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 24px var(--accent-glow);
}

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

.btn-secondary:hover {
  border-color: var(--text-muted);
  background: var(--surface);
}

.btn-large {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn-full {
  width: 100%;
}

.btn-nav {
  padding: 8px 16px;
  font-size: 0.8125rem;
}

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--sp-5);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 4px 24px rgba(99, 102, 241, 0.08);
}

.card-accent-top {
  border-top: 2px solid var(--warning);
}

.card-accent-top-accent {
  border-top: 2px solid var(--accent);
}

.card-accent-top-danger {
  border-top: 2px solid var(--danger);
}

/* ============================================================
   PLACEHOLDER BOXES
   ============================================================ */
.placeholder {
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  text-align: center;
  padding: var(--sp-4);
}

.placeholder-16x9 {
  aspect-ratio: 16 / 9;
}

.placeholder-4x3 {
  aspect-ratio: 4 / 3;
}

.placeholder-square {
  aspect-ratio: 1;
}

.placeholder-wide {
  aspect-ratio: 21 / 9;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding-top: calc(var(--nav-height) + var(--sp-8));
  padding-bottom: var(--sp-8);
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(99, 102, 241, 0.07) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 70% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-7);
  align-items: center;
}

.hero-text h1 {
  margin-bottom: var(--sp-3);
}

.hero-text .hero-sub {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: var(--sp-3);
}

.hero-text .hero-body {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  margin-bottom: var(--sp-5);
  max-width: 520px;
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

/* Page heroes (non-homepage) */
.hero-centered {
  text-align: center;
}

.hero-centered .section-subtitle {
  margin: var(--sp-3) auto 0;
  max-width: 640px;
}

/* ============================================================
   SOCIAL PROOF BAR
   ============================================================ */
.proof-bar {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--sp-5) 0;
}

.proof-bar-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
}

.proof-labels {
  display: flex;
  gap: var(--sp-5);
  flex-wrap: wrap;
  justify-content: center;
}

.proof-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.proof-label::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.proof-logos {
  display: flex;
  gap: var(--sp-7);
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.proof-logo {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  opacity: 0.6;
  transition: opacity 0.2s var(--ease);
}

.proof-logo:hover {
  opacity: 1;
}

/* ============================================================
   GRID LAYOUTS
   ============================================================ */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-4);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
}

/* ============================================================
   STAT CARDS (Fear section)
   ============================================================ */
.stat-card .stat-value {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--sp-2);
  line-height: 1;
}

.stat-card .stat-label {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ============================================================
   BAD OPTIONS SECTION
   ============================================================ */
.bad-option .bad-option-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--sp-2);
}

.bad-option .bad-option-body {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.bad-option-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-3);
  font-size: 1.25rem;
}

.fourth-option {
  text-align: center;
  margin-top: var(--sp-7);
}

.fourth-option p {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: var(--sp-3);
}

.fourth-option .altrace-large {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-3);
}

.fourth-option .arrow {
  color: var(--accent);
  font-size: 1.5rem;
}

/* ============================================================
   PRODUCT STEPS (Tabs)
   ============================================================ */
.steps-nav {
  display: flex;
  gap: var(--sp-2);
  margin-bottom: var(--sp-6);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

.step-tab {
  padding: var(--sp-3) var(--sp-4);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  transition: all 0.2s var(--ease);
  white-space: nowrap;
  font-family: inherit;
}

.step-tab:hover {
  color: var(--text-secondary);
}

.step-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.step-content {
  display: none;
}

.step-content.active {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-6);
  align-items: center;
}

.step-content .step-text h3 {
  margin-bottom: var(--sp-3);
}

.step-content .step-text p {
  font-size: 1rem;
  line-height: 1.7;
}

/* ============================================================
   SLACK SECTION
   ============================================================ */
.slack-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.slack-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-7);
  align-items: center;
}

.slack-grid h2 {
  margin-bottom: var(--sp-3);
}

.slack-grid p {
  font-size: 1rem;
  line-height: 1.7;
}

/* ============================================================
   COMPLIANCE GRID
   ============================================================ */
.compliance-item {
  display: flex;
  gap: var(--sp-3);
  align-items: flex-start;
}

.compliance-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: var(--radius-card);
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1rem;
}

.compliance-item h4 {
  margin-bottom: var(--sp-1);
}

.compliance-item p {
  font-size: 0.875rem;
}

/* ============================================================
   FINAL CTA
   ============================================================ */
.cta-section {
  text-align: center;
  padding: var(--sp-8) 0;
}

.cta-section h2 {
  margin-bottom: var(--sp-3);
}

.cta-section > .container > p {
  font-size: 1.0625rem;
  margin-bottom: var(--sp-5);
}

.cta-form {
  display: flex;
  gap: var(--sp-2);
  max-width: 480px;
  margin: 0 auto var(--sp-3);
}

.cta-form input {
  flex: 1;
  padding: 12px 16px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9375rem;
  outline: none;
  transition: border-color 0.2s var(--ease);
}

.cta-form input::placeholder {
  color: var(--text-muted);
}

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

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

/* ============================================================
   CAPABILITY DEEP-DIVE SECTIONS (product page)
   ============================================================ */
.capability {
  padding: var(--sp-8) 0;
  border-top: 1px solid var(--border);
}

.capability-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-7);
  align-items: center;
}

.capability-grid.reverse {
  direction: rtl;
}

.capability-grid.reverse > * {
  direction: ltr;
}

.capability h2 {
  margin-bottom: var(--sp-3);
}

.capability p {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: var(--sp-4);
}

.tech-box {
  background: #f5f5f3;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--sp-3) var(--sp-4);
  font-size: 0.875rem;
  color: #1a1a1a;
  font-family: var(--font-mono);
  line-height: 1.6;
}

.tech-box strong {
  color: var(--accent);
  font-weight: 600;
}

/* ============================================================
   INTEGRATION LOGOS
   ============================================================ */
.integration-section {
  text-align: center;
  padding: var(--sp-8) 0;
  border-top: 1px solid var(--border);
}

.logo-grid {
  display: flex;
  gap: var(--sp-6);
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin: var(--sp-5) 0;
}

.logo-item {
  padding: var(--sp-3) var(--sp-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ============================================================
   WHY-ALTRACE PAGE SPECIFICS
   ============================================================ */
.problem-section p {
  font-size: 1.0625rem;
  line-height: 1.8;
  max-width: 720px;
}

.problem-section p + p {
  margin-top: var(--sp-3);
}

.callout-box {
  background: #f5f5f3;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  padding: var(--sp-4) var(--sp-5);
  margin-top: var(--sp-5);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.build-vs-buy .timeline-total {
  text-align: center;
  margin-top: var(--sp-6);
  padding: var(--sp-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}

.timeline-total .total-time {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--warning);
  margin-bottom: var(--sp-2);
}

.timeline-total .total-label {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.alternative {
  text-align: center;
  margin-top: var(--sp-5);
  font-size: 1.25rem;
  color: var(--text-primary);
  font-weight: 600;
}

.comparison-table {
  width: 100%;
  margin-top: var(--sp-5);
}

.comparison-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
  margin-bottom: var(--sp-4);
}

.comparison-card {
  padding: var(--sp-4);
}

.comparison-card h4 {
  margin-bottom: var(--sp-2);
}

.comparison-card.theirs {
  border-color: rgba(239, 68, 68, 0.25);
}

.comparison-card.ours {
  border-color: rgba(16, 185, 129, 0.25);
}

.comparison-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--sp-2);
}

.comparison-label.theirs { color: var(--danger); }
.comparison-label.ours { color: var(--success); }

/* ============================================================
   ABOUT PAGE
   ============================================================ */
.founder-card {
  text-align: center;
}

.founder-photo {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--sp-4);
  border-radius: 50%;
  overflow: hidden;
}

.founder-card h3 {
  margin-bottom: var(--sp-1);
}

.founder-card .founder-role {
  font-size: 0.875rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: var(--sp-3);
}

.founder-card .founder-bio {
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: var(--sp-3);
}

.founder-card .founder-link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  transition: color 0.2s var(--ease);
}

.founder-card .founder-link:hover {
  color: var(--accent-hover);
}

.mission-section {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.mission-section h2 {
  margin-bottom: var(--sp-4);
}

.mission-section p {
  font-size: 1.0625rem;
  line-height: 1.8;
}

.contact-line {
  text-align: center;
  margin-top: var(--sp-6);
}

.contact-line a {
  color: var(--accent);
  font-weight: 500;
  transition: color 0.2s var(--ease);
}

.contact-line a:hover {
  color: var(--accent-hover);
}

/* ============================================================
   REQUEST ACCESS FORM
   ============================================================ */
.form-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.form-section {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: calc(var(--nav-height) + var(--sp-6));
  padding-bottom: var(--sp-8);
}

.form-card {
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  padding: var(--sp-6);
}

.form-card h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--sp-2);
  text-align: center;
}

.form-card .form-subtitle {
  text-align: center;
  margin-bottom: var(--sp-6);
  font-size: 0.9375rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
}

.form-group {
  margin-bottom: var(--sp-4);
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--sp-2);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9375rem;
  outline: none;
  transition: border-color 0.2s var(--ease);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23525252' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}

.form-group select option {
  background: var(--surface);
  color: var(--text-primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-footer {
  text-align: center;
  margin-top: var(--sp-4);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.form-success {
  display: none;
  text-align: center;
  padding: var(--sp-6) 0;
}

.form-success.show {
  display: block;
}

.form-success .success-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.1);
  border: 2px solid var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--sp-4);
  font-size: 1.5rem;
  color: var(--success);
}

.form-success h2 {
  margin-bottom: var(--sp-2);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: var(--sp-7) 0 var(--sp-5);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--sp-6);
  margin-bottom: var(--sp-6);
}

.footer-brand .nav-logo {
  margin-bottom: var(--sp-3);
}

.footer-brand p {
  font-size: 0.875rem;
  max-width: 280px;
}

.footer-links h4 {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: var(--sp-3);
}

.footer-links a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: var(--sp-1) 0;
  transition: color 0.2s var(--ease);
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: var(--sp-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

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

.footer-bottom-links {
  display: flex;
  gap: var(--sp-4);
}

.footer-bottom-links a {
  font-size: 0.8125rem;
  color: var(--text-muted);
  transition: color 0.2s var(--ease);
}

.footer-bottom-links a:hover {
  color: var(--text-secondary);
}

/* ============================================================
   SCROLL ANIMATIONS (Stagger Reveal)
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.12s; }
.fade-in-delay-2 { transition-delay: 0.24s; }
.fade-in-delay-3 { transition-delay: 0.36s; }
.fade-in-delay-4 { transition-delay: 0.48s; }

/* Stagger children automatically */
.stagger-reveal > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.stagger-reveal.visible > * {
  opacity: 1;
  transform: translateY(0);
}
.stagger-reveal.visible > *:nth-child(1) { transition-delay: 0s; }
.stagger-reveal.visible > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-reveal.visible > *:nth-child(3) { transition-delay: 0.2s; }
.stagger-reveal.visible > *:nth-child(4) { transition-delay: 0.3s; }
.stagger-reveal.visible > *:nth-child(5) { transition-delay: 0.4s; }
.stagger-reveal.visible > *:nth-child(6) { transition-delay: 0.5s; }

/* ============================================================
   STATS BAR (Horizontal)
   ============================================================ */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--surface);
}

.stats-bar .stat-item {
  padding: var(--sp-5) var(--sp-4);
  text-align: center;
  border-right: 1px solid var(--border);
}

.stats-bar .stat-item:last-child {
  border-right: none;
}

.stats-bar .stat-number {
  font-family: var(--font-mono);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: var(--sp-2);
}

.stats-bar .stat-source {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-top: var(--sp-1);
}

.stats-bar .stat-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ============================================================
   TERMINAL LOG VIEWER
   ============================================================ */
.terminal {
  background: #0f0f14;
  border-radius: 10px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: #1a1a22;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #28c840; }

.terminal-title {
  margin-left: 8px;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
}

.terminal-body {
  padding: 16px;
  overflow-x: auto;
}

.terminal-line {
  white-space: nowrap;
  color: rgba(255, 255, 255, 0.7);
}

.terminal-line .t-time {
  color: rgba(255, 255, 255, 0.3);
}

.terminal-line .t-label {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 4px;
}

.terminal-line .t-allow { background: rgba(16, 185, 129, 0.2); color: #34d399; }
.terminal-line .t-block { background: rgba(239, 68, 68, 0.2); color: #f87171; }
.terminal-line .t-warn { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.terminal-line .t-kill { background: rgba(239, 68, 68, 0.35); color: #fca5a5; }
.terminal-line .t-info { background: rgba(99, 102, 241, 0.2); color: #a5b4fc; }

.terminal-line .t-agent { color: #93c5fd; }
.terminal-line .t-model { color: #c4b5fd; }
.terminal-line .t-cost { color: #fde68a; }
.terminal-line .t-reason { color: #f87171; }
.terminal-line .t-key { color: rgba(255, 255, 255, 0.4); }
.terminal-line .t-value { color: rgba(255, 255, 255, 0.8); }

/* ============================================================
   ARCHITECTURE DIAGRAM (CSS)
   ============================================================ */
.arch-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-3);
  padding: var(--sp-6) var(--sp-4);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow-x: auto;
}

.arch-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  min-width: 100px;
  text-align: center;
}

.arch-node-box {
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-card);
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
}

.arch-node-box.agent {
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.2);
  color: var(--accent);
}

.arch-node-box.proxy {
  background: var(--accent);
  color: white;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.25);
}

.arch-node-box.provider {
  background: rgba(82, 82, 82, 0.08);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.arch-node-label {
  font-size: 0.6875rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.arch-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  min-width: 60px;
}

.arch-arrow-line {
  width: 40px;
  height: 2px;
  background: var(--border);
  position: relative;
}

.arch-arrow-line::after {
  content: '';
  position: absolute;
  right: -1px;
  top: -4px;
  border: 5px solid transparent;
  border-left: 6px solid var(--border);
}

/* ============================================================
   SLACK MOCK
   ============================================================ */
.slack-mock {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  font-size: 0.875rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.slack-mock-header {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 12px 16px;
  background: #4a154b;
  color: white;
  font-weight: 600;
  font-size: 0.8125rem;
}

.slack-mock-channel {
  opacity: 0.8;
  font-weight: 400;
}

.slack-mock-body {
  padding: var(--sp-3);
}

.slack-msg {
  display: flex;
  gap: var(--sp-3);
  padding: var(--sp-2) 0;
}

.slack-avatar {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 0.75rem;
  flex-shrink: 0;
}

.slack-msg-content {
  flex: 1;
}

.slack-msg-name {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 0.8125rem;
}

.slack-msg-time {
  font-size: 0.6875rem;
  color: var(--text-muted);
  margin-left: var(--sp-2);
  font-weight: 400;
}

.slack-attachment {
  margin-top: var(--sp-2);
  border-left: 3px solid var(--danger);
  padding: var(--sp-2) var(--sp-3);
  background: rgba(239, 68, 68, 0.04);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
}

.slack-field {
  display: flex;
  gap: var(--sp-2);
  margin-bottom: 4px;
  font-size: 0.8125rem;
}

.slack-field-label {
  color: var(--text-muted);
  min-width: 80px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.slack-field-value {
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.slack-btn-row {
  margin-top: var(--sp-2);
  display: flex;
  gap: var(--sp-2);
}

.slack-btn {
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: default;
}

.slack-btn.danger {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
}

/* ============================================================
   DELEGATION VISUAL
   ============================================================ */
.delegation-visual {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--sp-5);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.delegation-chain {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.delegation-node {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.delegation-badge {
  min-width: 80px;
  padding: 6px 12px;
  border-radius: 6px;
  font-weight: 600;
  text-align: center;
  font-size: 0.75rem;
}

.delegation-badge.operator {
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent);
}

.delegation-badge.orchestrator {
  background: rgba(16, 185, 129, 0.12);
  color: var(--success);
}

.delegation-badge.worker {
  background: rgba(245, 158, 11, 0.12);
  color: var(--warning);
}

.delegation-perms {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.delegation-perm {
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.6875rem;
  background: #f5f5f3;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.delegation-perm.revoked {
  text-decoration: line-through;
  opacity: 0.4;
}

.delegation-arrow {
  padding-left: 36px;
  color: var(--text-muted);
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.delegation-arrow::before {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--text-muted);
}

/* ============================================================
   ENFORCEMENT vs MONITORING TABLE
   ============================================================ */
.enforce-table {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--surface);
}

.enforce-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.enforce-row + .enforce-row {
  border-top: 1px solid var(--border);
}

.enforce-row-header {
  border-bottom: 2px solid var(--border);
}

.enforce-cell {
  padding: var(--sp-4);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.enforce-cell:first-child {
  border-right: 1px solid var(--border);
}

.enforce-cell.header {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--sp-3) var(--sp-4);
}

.enforce-cell.header.theirs {
  color: var(--text-muted);
  background: #f9f9f7;
}

.enforce-cell.header.ours {
  color: var(--accent);
  background: rgba(99, 102, 241, 0.04);
}

.enforce-cell.ours-cell {
  background: rgba(99, 102, 241, 0.02);
  color: var(--text-primary);
  font-weight: 500;
}

.enforce-closer {
  text-align: center;
  margin-top: var(--sp-6);
  font-size: 1.125rem;
  color: var(--text-primary);
}

.enforce-closer strong {
  color: var(--accent);
}

/* ============================================================
   DUAL-LAYER ARCHITECTURE DIAGRAM
   ============================================================ */
.dual-arch {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.dual-arch-lane {
  padding: var(--sp-5) var(--sp-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-3);
}

.dual-arch-lane-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: var(--sp-2);
}

.dual-arch-divider {
  width: 1px;
  background: var(--border);
  position: relative;
}

.dual-arch-divider-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--surface);
  padding: var(--sp-2) var(--sp-3);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  white-space: nowrap;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.dual-arch-box {
  padding: var(--sp-2) var(--sp-4);
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  text-align: center;
  width: 100%;
  max-width: 180px;
}

.dual-arch-box.agent { background: rgba(99, 102, 241, 0.08); border: 1px solid rgba(99, 102, 241, 0.2); color: var(--accent); }
.dual-arch-box.enforcement { background: var(--accent); color: white; box-shadow: 0 2px 12px rgba(99, 102, 241, 0.2); }
.dual-arch-box.credential { background: #4f46e5; color: white; box-shadow: 0 2px 12px rgba(79, 70, 229, 0.2); }
.dual-arch-box.provider-box { background: rgba(82, 82, 82, 0.08); border: 1px solid var(--border); color: var(--text-secondary); }
.dual-arch-box.controlplane { background: rgba(16, 185, 129, 0.08); border: 1px solid rgba(16, 185, 129, 0.2); color: var(--success); font-size: 0.75rem; }

.dual-arch-arrow {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--text-muted);
  text-align: center;
}

.dual-arch-shared {
  grid-column: 1 / -1;
  border-top: 1px solid var(--border);
  padding: var(--sp-3) var(--sp-4);
  display: flex;
  justify-content: center;
  gap: var(--sp-6);
  background: rgba(16, 185, 129, 0.03);
}

.dual-arch-shared-item {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--success);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.dual-arch-shared-item::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}

/* ============================================================
   ANIMATED HERO BACKGROUND
   ============================================================ */
@keyframes hero-pulse {
  0%, 100% { opacity: 0.06; transform: scale(1); }
  50% { opacity: 0.1; transform: scale(1.05); }
}

.hero-bg::after {
  content: '';
  position: absolute;
  top: -20%;
  left: 30%;
  width: 40%;
  height: 60%;
  background: radial-gradient(ellipse, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  animation: hero-pulse 8s ease-in-out infinite;
  pointer-events: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero-grid,
  .slack-grid,
  .capability-grid,
  .step-content.active {
    grid-template-columns: 1fr;
    gap: var(--sp-5);
  }

  .capability-grid.reverse {
    direction: ltr;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  section {
    padding: var(--sp-7) 0;
  }

  .hero {
    padding-top: calc(var(--nav-height) + var(--sp-7));
    padding-bottom: var(--sp-7);
  }

  .nav-links {
    display: none;
  }

  .nav-right .btn-nav {
    display: none;
  }

  .nav-hamburger {
    display: flex;
    order: -1;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-5);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .cta-form {
    flex-direction: column;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .steps-nav {
    gap: 0;
  }

  .step-tab {
    padding: var(--sp-2) var(--sp-3);
    font-size: 0.8125rem;
  }

  .stats-bar {
    grid-template-columns: 1fr;
  }

  .stats-bar .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .stats-bar .stat-item:last-child {
    border-bottom: none;
  }

  .arch-diagram {
    flex-direction: column;
    gap: var(--sp-2);
  }

  .enforce-row {
    grid-template-columns: 1fr;
  }

  .enforce-cell:first-child {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .enforce-cell.header.theirs::before { content: 'Monitoring: '; }
  .enforce-cell.header.ours::before { content: 'Altrace: '; }

  .dual-arch {
    grid-template-columns: 1fr;
  }

  .dual-arch-divider {
    width: auto;
    height: 1px;
  }

  .dual-arch-shared {
    flex-direction: column;
    gap: var(--sp-2);
    align-items: center;
  }

  .arch-arrow-line {
    width: 2px;
    height: 24px;
  }

  .arch-arrow-line::after {
    right: auto;
    top: auto;
    bottom: -1px;
    left: -4px;
    border: 5px solid transparent;
    border-top: 6px solid var(--border);
    border-left: 5px solid transparent;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--sp-3);
  }

  .hero-ctas {
    flex-direction: column;
  }

  .hero-ctas .btn {
    width: 100%;
  }

  .proof-labels {
    flex-direction: column;
    align-items: center;
  }
}