/* Notchi — Architectural Minimalist Design System */
:root {
  --bg-page: #090A0D;
  --bg-surface: #111216;
  --bg-surface-elevated: #16181E;
  --bg-chip: #1A1D24;

  --border-subtle: #1F222A;
  --border-medium: #2D313C;
  --border-focus: #FFFFFF;

  --text-main: #FFFFFF;
  --text-body: #9CA3AF;
  --text-muted: #6B7280;

  --accent-emerald: #10B981;
  --accent-amber: #F59E0B;
  --accent-blue: #38BDF8;

  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  --transition-fast: 0.15s ease;
  --transition-smooth: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

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

/* Layout Utilities */
.content-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 10, 13, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-main);
}

.brand-logo {
  border-radius: 6px;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.badge-pill {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  background: var(--bg-chip);
  border: 1px solid var(--border-medium);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  color: var(--text-body);
}

.nav-menu {
  display: flex;
  gap: 28px;
}

.nav-menu a {
  color: var(--text-body);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-menu a:hover {
  color: var(--text-main);
}

.nav-cta-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Button System */
.btn-subtle {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-body);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.btn-subtle:hover {
  color: var(--text-main);
  border-color: var(--border-medium);
  background: var(--bg-surface);
}

.btn-solid-sm {
  font-size: 0.88rem;
  font-weight: 600;
  background: #FFFFFF;
  color: #000000;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid #FFFFFF;
  transition: all var(--transition-fast);
}

.btn-solid-sm:hover {
  background: #E5E7EB;
}

.btn-solid-lg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  background: #FFFFFF;
  color: #000000;
  font-size: 0.98rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  border: 1px solid #FFFFFF;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.btn-solid-lg:hover {
  background: #E5E7EB;
  transform: translateY(-1px);
}

.btn-solid-lg.full-width {
  width: 100%;
}

.btn-outline-lg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  background: var(--bg-surface);
  color: var(--text-main);
  font-size: 0.98rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  border: 1px solid var(--border-medium);
  transition: all var(--transition-fast);
}

.btn-outline-lg:hover {
  background: var(--bg-surface-elevated);
  border-color: #4B5563;
}

/* Hero Section */
.hero-block {
  padding: 70px 24px 80px;
  text-align: center;
}

.hero-wrapper {
  max-width: 860px;
  margin: 0 auto;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-body);
  margin-bottom: 24px;
}

.status-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-emerald);
  border-radius: 50%;
}

.hero-heading {
  font-family: var(--font-display);
  font-size: 3.8rem;
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.035em;
  color: #FFFFFF;
  margin-bottom: 20px;
}

.hero-lead {
  font-size: 1.18rem;
  color: var(--text-body);
  line-height: 1.65;
  max-width: 680px;
  margin: 0 auto 36px;
}

.hero-cta-row {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

/* Direct Telemetry Strip */
.telemetry-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  text-align: left;
}

.telemetry-cell {
  padding: 18px 22px;
  border-right: 1px solid var(--border-subtle);
}

.telemetry-cell:last-child {
  border-right: none;
}

.cell-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.cell-data {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 2px;
}

.cell-number {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 600;
  color: #FFFFFF;
}

.cell-unit {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-body);
}

.cell-hint {
  display: block;
  font-size: 0.76rem;
  color: var(--text-muted);
}

/* Walkthrough Section */
.walkthrough-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.section-title-wrap {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2.3rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1.02rem;
  color: var(--text-body);
  line-height: 1.6;
}

.walkthrough-frame {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.frame-top-bar {
  padding: 14px 20px;
  background: #0E0F13;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.frame-notch-dock {
  display: flex;
  align-items: center;
}

.frame-notch-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #191B22;
  border: 1px solid var(--border-medium);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
}

.live-indicator {
  width: 6px;
  height: 6px;
  background: var(--accent-emerald);
  border-radius: 50%;
}

.frame-notch-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: #E5E7EB;
}

.frame-actions {
  display: flex;
  gap: 6px;
}

.frame-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border-medium);
}

/* Walkthrough Snippet Viewport */
.walkthrough-media-box {
  background: #0A0B0E;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
}

.snippet-stage {
  display: none;
  width: 100%;
  max-width: 900px;
  text-align: center;
}

.snippet-stage.active {
  display: block;
  animation: fadeIn var(--transition-smooth);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.video-wrapper {
  position: relative;
  width: 100%;
  max-width: 860px;
  margin: 0 auto 20px;
  border-radius: 14px;
  overflow: hidden;
  background: #000000;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 16px 40px -10px rgba(0, 0, 0, 0.8), 0 0 1px 1px rgba(255, 255, 255, 0.05) inset;
}

.demo-video {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 1752 / 1080;
  object-fit: cover;
  background: #000000;
}

/* Custom Play/Pause Overlay Button on Right Corner */
.video-toggle-btn {
  position: absolute;
  bottom: 18px;
  right: 18px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(14, 15, 19, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.65);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 10;
}

.video-toggle-btn:hover {
  background: rgba(28, 30, 38, 0.95);
  border-color: rgba(255, 255, 255, 0.35);
  transform: scale(1.08);
  color: var(--accent-blue);
}

.video-toggle-btn:active {
  transform: scale(0.94);
}

.video-toggle-btn:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

.video-toggle-btn svg {
  pointer-events: none;
}

.snippet-caption {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.6;
  max-width: 680px;
  margin: 0 auto;
}

.snippet-caption strong {
  color: #FFFFFF;
}

/* Chapter Tab Bar */
.walkthrough-chapters {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.chapter-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 18px 12px;
  background: transparent;
  border: none;
  border-right: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.chapter-btn:last-child {
  border-right: none;
}

.chapter-btn:hover {
  background: var(--bg-surface-elevated);
}

.chapter-btn.active {
  background: #181A22;
  box-shadow: inset 0 2px 0 #FFFFFF;
}

.chapter-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
}

.chapter-btn.active .chapter-index {
  color: #FFFFFF;
}

.chapter-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-body);
}

.chapter-btn.active .chapter-name {
  color: #FFFFFF;
}

/* Core Features Grid */
.features-section {
  padding: 80px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: border-color var(--transition-fast);
}

.feature-box:hover {
  border-color: var(--border-medium);
}

.feature-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.feature-number {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.feature-box h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: #FFFFFF;
}

.feature-box p {
  color: var(--text-body);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.feature-points {
  list-style: none;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
}

.feature-points li {
  font-size: 0.85rem;
  color: #9CA3AF;
  margin-bottom: 8px;
  position: relative;
  padding-left: 14px;
}

.feature-points li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

/* Efficiency / Telemetry Section */
.efficiency-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: #0B0C0F;
}

.efficiency-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 44px;
}

.efficiency-content {
  max-width: 820px;
  margin: 0 auto;
}

.sub-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 10px;
}

.efficiency-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.efficiency-text {
  font-size: 1.05rem;
  color: var(--text-body);
  line-height: 1.65;
  margin-bottom: 32px;
}

.spec-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.spec-row {
  display: flex;
  flex-direction: column;
  background: #17181F;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
}

.spec-name {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.spec-val {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: #FFFFFF;
}

/* Pricing Section */
.pricing-section {
  padding: 80px 0;
}

.pricing-card-wrap {
  max-width: 680px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 44px;
}

.pricing-plan {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 14px;
}

.pricing-amount-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 12px;
}

.pricing-amount-row .currency {
  font-size: 2rem;
  font-weight: 600;
  color: #FFFFFF;
}

.pricing-amount-row .amount {
  font-family: var(--font-display);
  font-size: 4.2rem;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1;
}

.pricing-amount-row .term {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.pricing-summary {
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.6;
  margin-bottom: 28px;
}

.pricing-checklist {
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 24px 0;
  margin-bottom: 28px;
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 0.92rem;
  color: #E5E7EB;
}

.check-item:last-child {
  margin-bottom: 0;
}

.check-icon {
  font-weight: 700;
  color: var(--accent-emerald);
}

.pricing-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.trial-link {
  font-size: 0.88rem;
  color: var(--text-body);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.trial-link:hover {
  color: #FFFFFF;
}

.pricing-guarantees {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* 3-Step Setup */
.setup-section {
  padding: 70px 0;
  border-top: 1px solid var(--border-subtle);
  background: #0A0B0E;
}

.steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-muted);
  display: block;
  margin-bottom: 14px;
}

.step-item h4 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.step-item p {
  font-size: 0.9rem;
  color: var(--text-body);
  line-height: 1.6;
}

.step-item code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: #1C1E26;
  padding: 2px 6px;
  border-radius: 4px;
}

/* FAQ Section */
.faq-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.faq-list {
  max-width: 740px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-row {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.faq-row:hover {
  border-color: var(--border-medium);
}

.faq-row summary {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: #FFFFFF;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-row summary::-webkit-details-marker {
  display: none;
}

.faq-row summary::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--text-muted);
}

.faq-row[open] summary::after {
  content: '–';
  color: #FFFFFF;
}

.faq-answer {
  margin-top: 14px;
  font-size: 0.94rem;
  color: var(--text-body);
  line-height: 1.65;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-subtle);
  background: #060709;
  padding: 60px 0 30px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: #FFFFFF;
  margin-bottom: 6px;
}

.footer-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
}

.footer-note {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-nav {
  display: flex;
  gap: 24px;
}

.footer-nav a {
  color: var(--text-body);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .hero-heading {
    font-size: 2.8rem;
  }
  .telemetry-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .telemetry-cell:nth-child(2) {
    border-right: none;
  }
  .telemetry-cell:nth-child(1), .telemetry-cell:nth-child(2) {
    border-bottom: 1px solid var(--border-subtle);
  }
  .walkthrough-chapters {
    grid-template-columns: repeat(3, 1fr);
  }
  .chapter-btn:last-child {
    border-right: none;
  }
  .features-grid, .spec-list, .steps-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero-heading {
    font-size: 2.2rem;
  }
  .hero-lead {
    font-size: 1rem;
  }
  .nav-menu {
    display: none;
  }
  .telemetry-strip {
    grid-template-columns: 1fr;
  }
  .telemetry-cell {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }
  .telemetry-cell:last-child {
    border-bottom: none;
  }
  .pricing-card {
    padding: 30px 20px;
  }
  .pricing-amount-row .amount {
    font-size: 3.4rem;
  }
  .walkthrough-chapters {
    grid-template-columns: 1fr;
  }
  .chapter-btn {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }
  .chapter-btn:last-child {
    border-bottom: none;
  }
  .video-toggle-btn {
    bottom: 12px;
    right: 12px;
    width: 38px;
    height: 38px;
  }
}