/* ============================================
   CaseFlow System — Landing Page Styles
   ============================================ */

/* --- Design Tokens --- */
:root {
  --bg-white:        #FFFFFF;
  --bg-dark:         #0D0D0D;
  --bg-subtle:       #F8F8F8;
  --text-primary:    #0A0A0A;
  --text-secondary:  #3D3D3D;
  --text-muted:      #6B6B6B;
  --text-hint:       #A0A0A0;
  --text-on-dark:    #C8C8C8;
  --border-default:  #E8E8E8;
  --border-subtle:   #F0F0F0;
  --border-dark:     #1E1E1E;
  --accent:          #1A6BFF;
  --accent-light:    #EEF3FF;
  --accent-dark:     #0F45B8;
  --font-serif:      'Instrument Serif', Georgia, serif;
  --font-sans:       'DM Sans', system-ui, sans-serif;
  --section-pad:     clamp(5rem, 10vw, 8rem);
  --container-max:   1100px;
  --container-pad:   clamp(1.25rem, 4vw, 3rem);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 300;
  line-height: 1.65;
  color: var(--text-primary);
  background: var(--bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

/* --- Typography --- */
h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--text-primary);
}

.section-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-hint);
  margin-bottom: 1rem;
}

/* --- Buttons --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--text-primary);
  color: #fff;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  font-family: var(--font-sans);
  border: none;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.btn-primary:hover {
  background: #1A1A1A;
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  color: var(--text-secondary);
  padding: 14px 24px;
  border-radius: 8px;
  border: 1px solid var(--border-default);
  font-size: 15px;
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.btn-secondary:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.play-icon {
  flex-shrink: 0;
}

.btn-nav {
  display: inline-flex;
  align-items: center;
  background: var(--text-primary);
  color: #fff;
  padding: 9px 20px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-sans);
  border: none;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.btn-nav:hover {
  background: #1A1A1A;
  transform: translateY(-1px);
}

.btn-final {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--text-primary);
  color: #fff;
  padding: 16px 36px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 500;
  font-family: var(--font-sans);
  border: none;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.btn-final:hover {
  background: #1A1A1A;
  transform: translateY(-1px);
}

/* --- Animations --- */
section {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

section.visible {
  opacity: 1;
  transform: translateY(0);
}

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

/* ============================================
   1. STICKY NAV
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 60px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: height 0.2s ease, backdrop-filter 0.2s ease;
}

.nav.scrolled {
  height: 54px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  font-size: 16px;
  color: var(--text-primary);
}

.nav-logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

/* ============================================
   2. HERO
   ============================================ */
.hero {
  padding-top: calc(60px + clamp(4rem, 8vw, 7rem));
  padding-bottom: var(--section-pad);
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-light);
  color: var(--accent-dark);
  border-radius: 100px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 2rem;
}

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

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-sub {
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  font-size: 16px;
  line-height: 1.65;
}

.hero-ctas {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.hero-proof {
  color: var(--text-hint);
  font-size: 13px;
}

/* ============================================
   3. PROBLEM (Dark)
   ============================================ */
.problem {
  background: var(--bg-dark);
  padding: var(--section-pad) 0;
}

.problem .section-label {
  color: var(--text-hint);
}

.problem h2 {
  color: var(--bg-white);
  max-width: 640px;
  margin-bottom: 3rem;
}

.problem h2 em {
  font-style: italic;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-dark);
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: var(--bg-dark);
  padding: 2.25rem 2rem;
}

.stat-number {
  font-family: var(--font-serif);
  color: var(--accent);
  font-size: 2.5rem;
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.stat-label {
  color: var(--text-on-dark);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.stat-desc {
  color: #909090;
  font-size: 14px;
  font-weight: 300;
  line-height: 1.6;
}

.pain-box {
  border: 1px solid var(--border-dark);
  border-radius: 10px;
  padding: 2rem;
  color: #888888;
  font-size: 15px;
  line-height: 1.7;
}

.pain-box em {
  font-style: italic;
  color: #C0C0C0;
}

/* ============================================
   4. SOLUTION
   ============================================ */
.solution {
  padding: var(--section-pad) 0;
}

.solution h2 {
  margin-bottom: 1rem;
}

.solution-intro {
  color: var(--text-muted);
  max-width: 540px;
  margin-bottom: 3rem;
}

.before-after {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.ba-card {
  border-radius: 12px;
  padding: 2rem 1.75rem;
}

.ba-card--before {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
}

.ba-card--after {
  background: var(--accent-light);
  border: 1px solid #C5D9FF;
}

.ba-header {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.ba-card--after .ba-header {
  border-bottom-color: #D5E4FF;
}

.ba-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 14px;
  font-weight: 300;
  color: var(--text-secondary);
}

.ba-item:last-child {
  border-bottom: none;
}

.ba-card--after .ba-item {
  border-bottom-color: #D5E4FF;
}

.ba-icon {
  flex-shrink: 0;
  font-size: 14px;
  line-height: 1.65;
}

.ba-icon--x {
  color: #AAAAAA;
}

.ba-icon--check {
  color: var(--accent);
}

/* ============================================
   5. HOW IT WORKS
   ============================================ */
.how {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: var(--section-pad) 0;
}

.how h2 {
  margin-bottom: 1rem;
}

.how-intro {
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 3rem;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border-subtle);
  border-radius: 14px;
  overflow: hidden;
}

.step-card {
  background: var(--bg-white);
  padding: 2.25rem 2rem;
}

.step-week {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent-dark);
  border-radius: 100px;
  padding: 4px 12px;
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1.25rem;
}

.step-number {
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--border-subtle);
  line-height: 1;
  margin-bottom: 1rem;
}

.step-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.step-body {
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 300;
  line-height: 1.65;
}

/* ============================================
   6. OUTCOMES
   ============================================ */
.outcomes {
  padding: var(--section-pad) 0;
}

.outcomes h2 {
  margin-bottom: 1rem;
}

.outcomes-intro {
  color: var(--text-muted);
  max-width: 580px;
  margin-bottom: 3rem;
}

.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.outcome-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 1.75rem;
}

.outcome-metric {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.outcome-unit {
  color: var(--accent);
}

.outcome-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.outcome-sub {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 300;
  line-height: 1.5;
}

.roi-callout {
  background: var(--accent-light);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 1.5rem 1.75rem;
  color: var(--accent-dark);
  font-size: 15px;
  line-height: 1.65;
}

.roi-callout strong {
  font-weight: 500;
}

/* ============================================
   7. WHO IT'S FOR
   ============================================ */
.who {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: var(--section-pad) 0;
}

.who h2 {
  margin-bottom: 2.5rem;
}

.who-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.who-card {
  background: var(--bg-white);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 2rem 1.75rem;
}

.who-card-header {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.who-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 0.6rem 0;
  font-size: 14px;
  font-weight: 300;
  color: var(--text-secondary);
}

.who-icon {
  flex-shrink: 0;
  font-size: 14px;
  line-height: 1.65;
}

.who-icon--arrow {
  color: var(--accent);
}

.who-icon--dash {
  color: #CCCCCC;
}

/* ============================================
   8. PRICING
   ============================================ */
.pricing {
  padding: var(--section-pad) 0;
}

.pricing h2 {
  margin-bottom: 1rem;
}

.pricing-intro {
  color: var(--text-muted);
  max-width: 580px;
  margin-bottom: 3rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.pricing-card {
  border-radius: 16px;
  padding: 2.5rem 2rem;
  position: relative;
}

.pricing-card--featured {
  border: 2px solid var(--text-primary);
}

.pricing-card--standard {
  border: 1px solid var(--border-default);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 2rem;
  background: var(--text-primary);
  color: #fff;
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 12px;
  font-weight: 500;
}

.pricing-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.pricing-price {
  font-family: var(--font-serif);
  font-size: 2.6rem;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.pricing-price-suffix {
  font-family: var(--font-sans);
  font-size: 16px;
  color: var(--text-muted);
  font-weight: 300;
}

.pricing-monthly {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
}

.pricing-list {
  list-style: none;
  margin-bottom: 2rem;
}

.pricing-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 0.5rem 0;
  font-size: 14px;
  font-weight: 300;
  color: var(--text-secondary);
}

.pricing-check {
  color: var(--accent);
  flex-shrink: 0;
  line-height: 1.65;
}

.risk-note {
  background: var(--bg-subtle);
  border-radius: 10px;
  padding: 1.5rem 1.75rem;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}

.risk-note strong {
  font-weight: 500;
  color: var(--text-primary);
}

/* ============================================
   9. FAQ
   ============================================ */
.faq {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-subtle);
  padding: var(--section-pad) 0;
}

.faq h2 {
  margin-bottom: 2.5rem;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border-subtle);
  border-radius: 14px;
  overflow: hidden;
}

.faq-card {
  background: var(--bg-white);
  padding: 2rem 1.75rem;
}

.faq-question {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.faq-answer {
  font-size: 14px;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.65;
}

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

.final-cta h2 {
  max-width: 600px;
  margin: 0 auto 1rem;
}

.final-cta-sub {
  color: var(--text-muted);
  max-width: 440px;
  margin: 0 auto 2.5rem;
}

.final-cta-note {
  color: var(--text-hint);
  font-size: 13px;
  margin-top: 1.25rem;
}

/* ============================================
   11. FOOTER
   ============================================ */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 0;
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  font-size: 15px;
  color: var(--text-primary);
}

.footer-logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.footer-copy {
  color: var(--text-hint);
  font-size: 13px;
}

.footer-email {
  color: var(--text-muted);
  font-size: 13px;
  transition: color 0.2s ease;
}

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

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .steps,
  .faq-grid,
  .stat-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .before-after,
  .who-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 420px) {
  .outcomes-grid {
    grid-template-columns: 1fr;
  }
}