/* ==========================================================================
   VoiceReach: Landing Page Stylesheet
   Design System: Apple Design foundations + Better Layout principles + Brand Tokens
   Tokens: Ink Navy (#1F2430), Coral (#FF6F61), Amber (#F5A623), Pure White (#FFFFFF)
   Strict Rules: Zero Emojis, No intrusive animation libraries, System typography
   ========================================================================== */

/* Brand Core Tokens & Light Theme (Default) */
:root {
  /* Brand Color Constants */
  --color-coral: #FF6F61;
  --color-coral-dark: #C7382B;
  --color-coral-hover: #FF8276;
  --color-coral-tint: rgba(255, 111, 97, 0.12);
  --color-coral-glow: rgba(255, 111, 97, 0.25);
  
  --color-mid-orange: #FB8F42;
  --color-amber: #F5A623;
  --color-amber-dark: #B45309;
  --color-amber-tint: rgba(245, 166, 35, 0.12);
  
  --color-white: #FFFFFF;

  /* Typography Stacks */
  --font-serif: ui-serif, 'New York', Georgia, 'Times New Roman', Cambria, serif;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', monospace;

  /* Layout Spacing */
  --container-max-width: 1200px;
  --container-padding: clamp(1.25rem, 4vw, 2.5rem);
  --section-padding: clamp(4rem, 8vw, 7.5rem);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  /* =========================================================================
     LIGHT THEME (DEFAULT)
     ========================================================================= */
  --theme-bg: #F8FAFC;
  --theme-bg-subtle: #F1F5F9;
  --theme-bg-hero: radial-gradient(circle at 80% 20%, rgba(255, 111, 97, 0.08) 0%, transparent 60%),
                   radial-gradient(circle at 10% 80%, rgba(245, 166, 35, 0.06) 0%, transparent 50%),
                   #FFFFFF;
  --theme-surface: #FFFFFF;
  --theme-surface-subtle: #F8FAFC;
  --theme-surface-elevated: #FFFFFF;
  --theme-surface-hover: #F1F5F9;
  --theme-card-bg: #FFFFFF;
  --theme-card-alt: #F8FAFC;
  
  --theme-text-primary: #0F172A;
  --theme-text-secondary: #475569;
  --theme-text-muted: #64748B;
  --theme-text-subtle: #94A3B8;

  --theme-border: rgba(15, 23, 42, 0.08);
  --theme-border-highlight: rgba(15, 23, 42, 0.14);
  --theme-border-subtle: rgba(15, 23, 42, 0.05);

  --theme-nav-bg: rgba(255, 255, 255, 0.88);
  --theme-nav-border: rgba(15, 23, 42, 0.08);

  --theme-card-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
  --theme-card-shadow-heavy: 0 20px 45px rgba(15, 23, 42, 0.08);

  --theme-btn-secondary-bg: #FFFFFF;
  --theme-btn-secondary-color: #0F172A;
  --theme-btn-secondary-border: rgba(15, 23, 42, 0.14);

  --theme-btn-ghost-color: #0F172A;
  --theme-btn-ghost-border: rgba(15, 23, 42, 0.14);

  --theme-btn-signin-bg: rgba(15, 23, 42, 0.05);
  --theme-btn-signin-color: #0F172A;
  --theme-btn-signin-border: rgba(15, 23, 42, 0.1);

  --theme-chip-bg: rgba(15, 23, 42, 0.04);
  --theme-chip-border: rgba(15, 23, 42, 0.08);

  --theme-dialogue-caller-bg: #F1F5F9;
  --theme-dialogue-caller-border: rgba(15, 23, 42, 0.08);
  --theme-dialogue-ai-bg: rgba(255, 111, 97, 0.06);
  --theme-dialogue-ai-border: rgba(255, 111, 97, 0.22);

  --theme-drawer-bg: #FFFFFF;
  --theme-footer-bg: #F8FAFC;
  --theme-footer-text: #475569;
  --theme-footer-border: rgba(15, 23, 42, 0.08);

  --theme-pilot-banner-bg: linear-gradient(135deg, #FFFFFF 0%, #F1F5F9 100%);
  --theme-code-bg: #0E1117;
  --theme-table-header-bg: rgba(15, 23, 42, 0.03);

  /* Semantic Color Aliases for Instant Theme Switch */
  --color-ink-navy: var(--theme-surface);
  --color-ink-dark: var(--theme-surface-subtle);
  --color-ink-deeper: var(--theme-bg);
  --color-ink-surface: var(--theme-surface-elevated);
  --color-ink-surface-hover: var(--theme-surface-hover);

  --color-text-dark: var(--theme-text-primary);
  --color-text-muted-light: var(--theme-text-secondary);
  --color-text-light: var(--theme-text-primary);
  --color-text-muted-dark: var(--theme-text-secondary);
  --color-text-subtle: var(--theme-text-muted);

  --border-light: var(--theme-border-subtle);
  --border-dark: var(--theme-border);
  --border-dark-highlight: var(--theme-border-highlight);

  --nav-backdrop: var(--theme-nav-bg);
  --nav-border: var(--theme-nav-border);
  --shadow-subtle: var(--theme-card-shadow);
  --shadow-glow: 0 10px 30px rgba(255, 111, 97, 0.15);
}

/* =========================================================================
   DARK THEME OVERRIDES
   ========================================================================= */
[data-theme="dark"] {
  --theme-bg: #0E1117;
  --theme-bg-subtle: #151821;
  --theme-bg-hero: radial-gradient(circle at 80% 20%, rgba(255, 111, 97, 0.08) 0%, transparent 60%),
                   radial-gradient(circle at 10% 80%, rgba(245, 166, 35, 0.05) 0%, transparent 50%),
                   #0E1117;
  --theme-surface: #1F2430;
  --theme-surface-subtle: #151821;
  --theme-surface-elevated: #252B3A;
  --theme-surface-hover: #2D3447;
  --theme-card-bg: #1F2430;
  --theme-card-alt: #151821;

  --theme-text-primary: #FFFFFF;
  --theme-text-secondary: #A0A8BA;
  --theme-text-muted: #737D91;
  --theme-text-subtle: #5A6478;

  --theme-border: rgba(255, 255, 255, 0.1);
  --theme-border-highlight: rgba(255, 255, 255, 0.18);
  --theme-border-subtle: rgba(255, 255, 255, 0.06);

  --theme-nav-bg: rgba(31, 36, 48, 0.88);
  --theme-nav-border: rgba(255, 255, 255, 0.08);

  --theme-card-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  --theme-card-shadow-heavy: 0 20px 50px rgba(0, 0, 0, 0.5);

  --theme-btn-secondary-bg: #252B3A;
  --theme-btn-secondary-color: #FFFFFF;
  --theme-btn-secondary-border: rgba(255, 255, 255, 0.18);

  --theme-btn-ghost-color: #FFFFFF;
  --theme-btn-ghost-border: rgba(255, 255, 255, 0.18);

  --theme-btn-signin-bg: rgba(255, 255, 255, 0.08);
  --theme-btn-signin-color: #FFFFFF;
  --theme-btn-signin-border: rgba(255, 255, 255, 0.1);

  --theme-chip-bg: rgba(255, 255, 255, 0.05);
  --theme-chip-border: rgba(255, 255, 255, 0.1);

  --theme-dialogue-caller-bg: rgba(255, 255, 255, 0.04);
  --theme-dialogue-caller-border: rgba(255, 255, 255, 0.1);
  --theme-dialogue-ai-bg: #252B3A;
  --theme-dialogue-ai-border: rgba(255, 111, 97, 0.3);

  --theme-drawer-bg: #1F2430;
  --theme-footer-bg: #0E1117;
  --theme-footer-text: #A0A8BA;
  --theme-footer-border: rgba(255, 255, 255, 0.1);

  --theme-pilot-banner-bg: linear-gradient(135deg, #252B3A 0%, #151821 100%);
  --theme-code-bg: #0E1117;
  --theme-table-header-bg: rgba(255, 255, 255, 0.03);

  --color-ink-navy: #1F2430;
  --color-ink-dark: #151821;
  --color-ink-deeper: #0E1117;
  --color-ink-surface: #252B3A;
  --color-ink-surface-hover: #2D3447;

  --color-text-dark: #1F2430;
  --color-text-muted-light: #5A6478;
  --color-text-light: #FFFFFF;
  --color-text-muted-dark: #A0A8BA;
  --color-text-subtle: #737D91;

  --border-light: rgba(31, 36, 48, 0.1);
  --border-dark: rgba(255, 255, 255, 0.1);
  --border-dark-highlight: rgba(255, 255, 255, 0.18);

  --nav-backdrop: rgba(31, 36, 48, 0.88);
  --nav-border: rgba(255, 255, 255, 0.08);
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  -webkit-text-size-adjust: 100%;
  background-color: var(--theme-bg);
  color: var(--theme-text-primary);
  color-scheme: light;
  transition: background-color 0.2s ease, color 0.2s ease;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  font-weight: 400;
  color: var(--theme-text-secondary);
  background-color: var(--theme-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* Accessibility: Focus Rings */
:focus-visible {
  outline: 2px solid var(--color-coral);
  outline-offset: 3px;
}

/* Container Utility */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* Links & Buttons Reset */
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease, opacity 0.15s ease;
}

button {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: transparent;
  cursor: pointer;
  color: inherit;
}

/* ==========================================================================
   BUTTONS (Apple Design: Response, directness, micro-press)
   ========================================================================== */
.btn-primary,
.btn-secondary,
.btn-ghost,
.btn-signin,
.btn-disabled {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.4rem;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-sm);
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
  user-select: none;
}

.btn-primary:active,
.btn-secondary:active,
.btn-ghost:active,
.btn-signin:active {
  transform: scale(0.97);
}

.btn-primary {
  background-color: var(--color-coral);
  color: var(--color-white);
  border: 1px solid var(--color-coral);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  background-color: var(--color-coral-hover);
  border-color: var(--color-coral-hover);
}

.btn-secondary {
  background-color: var(--theme-btn-secondary-bg);
  color: var(--theme-btn-secondary-color);
  border: 1px solid var(--theme-btn-secondary-border);
}

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

.btn-ghost {
  background-color: transparent;
  color: var(--theme-btn-ghost-color);
  border: 1px solid var(--theme-btn-ghost-border);
}

.btn-ghost:hover {
  background-color: var(--theme-chip-bg);
  border-color: var(--theme-border-highlight);
}

.btn-signin {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  background-color: var(--theme-btn-signin-bg);
  color: var(--theme-btn-signin-color);
  border: 1px solid var(--theme-btn-signin-border);
}

.btn-signin:hover {
  background-color: var(--theme-surface-hover);
  border-color: var(--theme-border-highlight);
}

.btn-disabled {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--color-text-subtle);
  border: 1px solid rgba(255, 255, 255, 0.08);
  cursor: not-allowed;
}

.full-width {
  width: 100%;
}

/* ==========================================================================
   FLOATING HEADER & NAV (Apple Design: Translucent material & depth)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background: var(--nav-backdrop);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--nav-border);
  transition: border-color 0.2s ease;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
}

.brand-mark {
  display: block;
  flex-shrink: 0;
}

.brand-wordmark {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--theme-text-primary);
  text-transform: lowercase;
}

.desktop-nav {
  display: none;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted-dark);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-sm);
  color: var(--theme-text-primary);
  border: 1px solid var(--theme-border);
  background: var(--theme-chip-bg);
}

.mobile-toggle:hover {
  background: var(--theme-surface-hover);
}

.mobile-toggle .icon-close {
  display: none;
}

.mobile-toggle.open .icon-menu {
  display: none;
}

.mobile-toggle.open .icon-close {
  display: block;
}

/* Mobile Drawer */
.mobile-drawer {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: var(--color-ink-navy);
  border-bottom: 1px solid var(--border-dark-highlight);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.mobile-drawer.open {
  display: block;
}

.drawer-content {
  padding: 1.5rem var(--container-padding) 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-nav-link {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-text-muted-dark);
  padding-block: 0.25rem;
}

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

.drawer-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-dark);
}

/* ==========================================================================
   SECTION COMMON & LAYOUT FOUNDATIONS
   ========================================================================== */
.section {
  padding-block: var(--section-padding);
  position: relative;
}

.section-header {
  max-width: 48rem;
  margin-block-end: clamp(2.5rem, 5vw, 4rem);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--theme-text-primary);
  margin-block-end: 1rem;
}

.section-lead {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  color: var(--color-text-muted-dark);
  line-height: 1.6;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  padding-block-start: clamp(3rem, 6vw, 6rem);
  padding-block-end: clamp(4rem, 8vw, 7rem);
  background: var(--theme-bg-hero);
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2.5rem, 5vw, 4rem);
  align-items: center;
}

.hero-text-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.brand-status-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  background-color: var(--theme-chip-bg);
  border: 1px solid var(--theme-chip-border);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--theme-text-secondary);
  margin-block-end: 1.5rem;
}

.status-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-coral);
  box-shadow: 0 0 8px var(--color-coral);
}

.hero-headline {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5.5vw, 4.25rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--theme-text-primary);
  margin-block-end: 1.25rem;
}

.hero-subline {
  font-size: clamp(1.125rem, 2vw, 1.35rem);
  line-height: 1.55;
  color: var(--color-text-muted-dark);
  max-width: 36rem;
  margin-block-end: 2rem;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-block-end: 2.5rem;
}

.hero-telecom-row {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-block-start: 1.5rem;
  border-top: 1px solid var(--border-dark);
  width: 100%;
  max-width: 36rem;
}

.telecom-label {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
  font-weight: 500;
}

.telecom-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.telecom-pill {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  background-color: var(--theme-chip-bg);
  border: 1px solid var(--theme-chip-border);
  color: var(--theme-text-secondary);
}

/* Hero Demo Card (Telecom Stream Simulator) */
.hero-demo-card {
  background-color: var(--theme-card-bg);
  border: 1px solid var(--theme-border-highlight);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 3vw, 2rem);
  box-shadow: var(--theme-card-shadow-heavy);
  position: relative;
  overflow: hidden;
}

.hero-demo-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-coral), var(--color-mid-orange), var(--color-amber));
}

.demo-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block-end: 1.25rem;
  border-bottom: 1px solid var(--border-dark);
  margin-block-end: 1.5rem;
}

.demo-card-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.demo-pulse {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #10B981;
  box-shadow: 0 0 10px #10B981;
}

.demo-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--theme-text-primary);
}

.demo-subtitle {
  font-size: 0.75rem;
  color: var(--color-text-subtle);
}

.demo-latency-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-pill);
  background-color: rgba(16, 185, 129, 0.15);
  color: #34D399;
  border: 1px solid rgba(16, 185, 129, 0.25);
  white-space: nowrap;
}

.demo-dialogue {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-block-end: 1.5rem;
}

.dialogue-bubble {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.caller-bubble {
  background-color: var(--theme-dialogue-caller-bg);
  border: 1px solid var(--theme-dialogue-caller-border);
}

.ai-bubble {
  background-color: var(--theme-dialogue-ai-bg);
  border: 1px solid var(--theme-dialogue-ai-border);
  box-shadow: 0 4px 15px rgba(255, 111, 97, 0.08);
}

.bubble-meta {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-subtle);
  margin-block-end: 0.35rem;
}

.ai-bubble .bubble-meta {
  color: var(--color-coral);
}

.bubble-text {
  color: var(--theme-text-primary);
}

.pipeline-step-indicator {
  padding-block: 0.5rem;
}

.pipeline-track {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  overflow-x: auto;
  padding-block: 0.25rem;
}

.pipeline-node {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--theme-chip-bg);
  color: var(--theme-text-secondary);
  border: 1px solid var(--theme-border);
  white-space: nowrap;
}

.pipeline-node.active {
  color: var(--color-white);
  border-color: rgba(255, 111, 97, 0.4);
  background: rgba(255, 111, 97, 0.1);
}

.pipeline-line {
  flex-grow: 1;
  height: 1px;
  background-color: var(--border-dark);
  min-width: 8px;
}

.demo-interactive-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block-start: 1rem;
  border-top: 1px solid var(--border-dark);
}

.waveform-container {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 24px;
}

.wave-bar {
  width: 3px;
  height: 6px;
  background-color: var(--color-text-subtle);
  border-radius: 2px;
  transition: height 0.15s ease, background-color 0.15s ease;
}

.hero-demo-card.playing .wave-bar {
  background-color: var(--color-coral);
  animation: wavePulse 0.8s ease-in-out infinite alternate;
}

.hero-demo-card.playing .wave-bar:nth-child(2) { animation-delay: 0.1s; }
.hero-demo-card.playing .wave-bar:nth-child(3) { animation-delay: 0.2s; }
.hero-demo-card.playing .wave-bar:nth-child(4) { animation-delay: 0.3s; }
.hero-demo-card.playing .wave-bar:nth-child(5) { animation-delay: 0.4s; }
.hero-demo-card.playing .wave-bar:nth-child(6) { animation-delay: 0.15s; }
.hero-demo-card.playing .wave-bar:nth-child(7) { animation-delay: 0.25s; }
.hero-demo-card.playing .wave-bar:nth-child(8) { animation-delay: 0.35s; }
.hero-demo-card.playing .wave-bar:nth-child(9) { animation-delay: 0.05s; }
.hero-demo-card.playing .wave-bar:nth-child(10) { animation-delay: 0.3s; }

@keyframes wavePulse {
  0% { height: 4px; }
  100% { height: 22px; }
}

.btn-audio-sim {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  background-color: var(--theme-chip-bg);
  border: 1px solid var(--theme-border);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--theme-text-primary);
  transition: background-color 0.15s ease;
}

.btn-audio-sim:hover {
  background-color: var(--theme-surface-hover);
}

/* ==========================================================================
   AUDIENCES SECTION (Anchor panels: Individuals, Business, Developers)
   ========================================================================== */
.audiences-section {
  background-color: var(--color-ink-navy);
  border-top: 1px solid var(--border-dark);
  border-bottom: 1px solid var(--border-dark);
}

.audience-panels-container {
  display: flex;
  flex-direction: column;
  gap: clamp(3rem, 6vw, 5rem);
}

.audience-panel {
  background-color: var(--theme-card-bg);
  border: 1px solid var(--theme-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 4vw, 3.5rem);
  box-shadow: var(--theme-card-shadow);
  position: relative;
  overflow: hidden;
}

.panel-category-tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-coral);
  margin-block-end: 0.75rem;
}

.panel-headline {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--theme-text-primary);
  margin-block-end: 1.25rem;
}

.panel-copy {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--color-text-muted-dark);
  line-height: 1.6;
  max-width: 48rem;
  margin-block-end: 2rem;
}

/* Feature List (Individuals) */
.panel-feature-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-block-end: 2.5rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.feature-icon {
  flex-shrink: 0;
  color: var(--color-coral);
  margin-top: 0.2rem;
}

.feature-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--theme-text-primary);
  margin-block-end: 0.25rem;
}

.feature-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted-dark);
}

.panel-cta-box {
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  background-color: var(--theme-chip-bg);
  border: 1px solid var(--theme-border);
}

.cta-status-note {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted-dark);
  margin-block-end: 1rem;
}

.dot-amber {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-amber);
}

.panel-action-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
}

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

/* Industries Grid (Business) */
.industries-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-block-end: 2rem;
}

.industry-card {
  padding: 1.25rem;
  border-radius: var(--radius-md);
  background-color: var(--theme-card-alt);
  border: 1px solid var(--theme-border);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.industry-card:hover {
  background-color: var(--theme-surface-hover);
  border-color: var(--theme-border-highlight);
}

.industry-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--theme-text-primary);
  margin-block-end: 0.4rem;
}

.industry-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted-dark);
  line-height: 1.5;
}

/* Traction Callout */
.traction-callout {
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  background: rgba(245, 166, 35, 0.06);
  border: 1px solid rgba(245, 166, 35, 0.2);
  margin-block-end: 2rem;
}

.traction-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-amber);
  margin-block-end: 0.35rem;
}

.traction-text {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* Code Preview Container (Developers) */
.code-preview-container {
  background-color: var(--color-ink-deeper);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-block-end: 2rem;
}

.code-tabs-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background-color: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border-dark);
}

.code-tabs-group {
  display: flex;
  gap: 0.5rem;
}

.code-tab {
  padding: 0.35rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  color: var(--color-text-subtle);
  transition: color 0.15s ease, background-color 0.15s ease;
}

.code-tab:hover {
  color: var(--color-text-light);
}

.code-tab.active {
  color: var(--color-white);
  background-color: var(--color-ink-surface);
}

.btn-copy-code {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-subtle);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-dark);
  transition: color 0.15s ease, border-color 0.15s ease;
}

.btn-copy-code:hover {
  color: var(--color-white);
  border-color: var(--border-dark-highlight);
}

.code-viewport {
  padding: 1.25rem;
  overflow-x: auto;
}

.code-pane {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
  color: #D1D5DB;
  white-space: pre;
}

.code-pane.active {
  display: block;
}

/* Syntax Token Styling */
.token-comment { color: #6B7280; font-style: italic; }
.token-string { color: #F59E0B; }
.token-keyword { color: #FF6F61; font-weight: 600; }
.token-function { color: #60A5FA; }

.developer-proof-box {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background-color: var(--theme-chip-bg);
  border: 1px solid var(--theme-border);
  margin-block-end: 2rem;
}

.dev-proof-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-coral);
  margin-block-end: 0.25rem;
}

.dev-proof-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted-dark);
}

/* ==========================================================================
   WORKFLOW SECTION (4-step linear strip)
   ========================================================================== */
.workflow-section {
  background-color: var(--color-ink-deeper);
}

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

.workflow-card {
  padding: 2rem;
  border-radius: var(--radius-md);
  background-color: var(--theme-card-bg);
  border: 1px solid var(--theme-border);
  box-shadow: var(--theme-card-shadow);
  position: relative;
  display: flex;
  flex-direction: column;
}

.step-num-badge {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-coral);
  margin-block-end: 1rem;
}

.step-heading {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--theme-text-primary);
  line-height: 1.25;
  margin-block-end: 0.75rem;
}

.step-body {
  font-size: 0.9375rem;
  color: var(--color-text-muted-dark);
  line-height: 1.6;
  margin-block-end: 1.5rem;
  flex-grow: 1;
}

.step-spec {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  padding-top: 1rem;
  border-top: 1px solid var(--border-dark);
}

/* ==========================================================================
   PROOF SECTION (Grounded metrics & verified traction)
   ========================================================================== */
.proof-section {
  background-color: var(--color-ink-navy);
  border-top: 1px solid var(--border-dark);
}

.proof-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-block-end: 4rem;
}

.proof-card {
  padding: 2rem;
  border-radius: var(--radius-md);
  background-color: var(--theme-card-bg);
  border: 1px solid var(--theme-border);
  box-shadow: var(--theme-card-shadow);
}

.proof-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-block-end: 1.25rem;
}

.proof-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
}

.proof-badge.live { background-color: rgba(16, 185, 129, 0.15); color: #34D399; }
.proof-badge.verified { background-color: rgba(245, 166, 35, 0.15); color: #F5A623; }
.proof-badge.sovereign { background-color: rgba(255, 111, 97, 0.15); color: #FF6F61; }
.proof-badge.technical { background-color: rgba(96, 165, 250, 0.15); color: #60A5FA; }

.proof-metric {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted-dark);
}

.proof-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--theme-text-primary);
  line-height: 1.25;
  margin-block-end: 0.75rem;
}

.proof-text {
  font-size: 0.9375rem;
  color: var(--color-text-muted-dark);
  line-height: 1.6;
}

/* Pilot CTA Banner */
.pilot-banner {
  padding: clamp(2rem, 5vw, 3.5rem);
  border-radius: var(--radius-lg);
  background: var(--theme-pilot-banner-bg);
  border: 1px solid var(--border-dark-highlight);
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: flex-start;
}

.pilot-banner-headline {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--theme-text-primary);
  margin-block-end: 0.75rem;
}

.pilot-banner-copy {
  font-size: 1.0625rem;
  color: var(--color-text-muted-dark);
  max-width: 36rem;
}

.pilot-banner-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

/* ==========================================================================
   FOOTER SECTION
   ========================================================================== */
.site-footer {
  background-color: var(--color-ink-deeper);
  border-top: 1px solid var(--border-dark);
  padding-block: 4rem 3rem;
  font-size: 0.875rem;
}

.footer-top-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-block-end: 3rem;
  border-bottom: 1px solid var(--border-dark);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-block-end: 1rem;
}

.footer-wordmark {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--theme-text-primary);
  text-transform: lowercase;
}

.footer-tagline {
  font-size: 0.9375rem;
  color: var(--color-text-muted-dark);
  margin-block-end: 0.5rem;
}

.footer-attribution {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}

.footer-col-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--theme-text-primary);
  margin-block-end: 1.25rem;
}

.footer-link-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  color: var(--color-text-muted-dark);
}

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

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

.footer-bottom-row {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-block-start: 2rem;
  align-items: flex-start;
  justify-content: space-between;
}

.footer-copyright {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
  line-height: 1.5;
}

.back-to-top-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}

.back-to-top-link:hover {
  color: var(--theme-text-primary);
}

/* ==========================================================================
   SUBPAGE & SEO ARTICLE STYLES
   ========================================================================== */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
  margin-block-end: 2rem;
}

.breadcrumb-link {
  color: var(--color-text-muted-dark);
}

.breadcrumb-link:hover {
  color: var(--color-coral);
}

.breadcrumb-separator {
  color: var(--color-text-subtle);
}

.article-hero {
  padding-block-start: clamp(2.5rem, 5vw, 4.5rem);
  padding-block-end: clamp(2.5rem, 5vw, 4.5rem);
  border-bottom: 1px solid var(--border-dark);
}

.article-title {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--theme-text-primary);
  margin-block-end: 1.25rem;
}

.article-lead {
  font-size: clamp(1.125rem, 2vw, 1.35rem);
  color: var(--color-text-muted-dark);
  line-height: 1.6;
  max-width: 48rem;
  margin-block-end: 2rem;
}

.prose-block {
  max-width: 52rem;
  margin-inline: auto;
  padding-block: clamp(3rem, 6vw, 5rem);
}

.prose-block h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--theme-text-primary);
  margin-block: 2.5rem 1rem;
}

.prose-block h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--theme-text-primary);
  margin-block: 2rem 0.75rem;
}

.prose-block p {
  font-size: 1.0625rem;
  color: var(--color-text-muted-dark);
  line-height: 1.7;
  margin-block-end: 1.5rem;
}

.prose-block ul,
.prose-block ol {
  margin-block-end: 1.75rem;
  padding-inline-start: 1.5rem;
  color: var(--color-text-muted-dark);
}

.prose-block li {
  margin-block-end: 0.65rem;
  line-height: 1.6;
}

.spec-table-container {
  overflow-x: auto;
  margin-block: 2rem 3rem;
  border: 1px solid var(--theme-border);
  border-radius: var(--radius-md);
  background-color: var(--theme-card-bg);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9375rem;
}

.spec-table th,
.spec-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-dark);
}

.spec-table th {
  background-color: var(--theme-table-header-bg);
  font-weight: 700;
  color: var(--theme-text-primary);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.spec-table tr:last-child td {
  border-bottom: none;
}

.spec-table td {
  color: var(--color-text-muted-dark);
}

.spec-table td strong {
  color: var(--theme-text-primary);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-block: 2rem 3rem;
}

.faq-card {
  padding: 1.75rem;
  border-radius: var(--radius-md);
  background-color: var(--theme-card-bg);
  border: 1px solid var(--theme-border);
  box-shadow: var(--theme-card-shadow);
}

.faq-question {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--theme-text-primary);
  margin-block-end: 0.75rem;
}

.faq-answer {
  font-size: 0.9375rem;
  color: var(--color-text-muted-dark);
  line-height: 1.65;
}

.info-card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-block: 2rem 3rem;
}

@media (min-width: 640px) {
  .info-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .info-card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.info-card {
  padding: 1.75rem;
  border-radius: var(--radius-md);
  background-color: var(--theme-card-bg);
  border: 1px solid var(--theme-border);
  box-shadow: var(--theme-card-shadow);
  display: flex;
  flex-direction: column;
}

.info-card-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--theme-text-primary);
  margin-block-end: 0.5rem;
}

.info-card-text {
  font-size: 0.9375rem;
  color: var(--color-text-muted-dark);
  line-height: 1.6;
  flex-grow: 1;
}

/* ==========================================================================
   MEDIA QUERIES (Breakpoints: 640px, 768px, 1024px)
   ========================================================================== */
@media (min-width: 640px) {
  .panel-feature-list {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .industries-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .footer-bottom-row {
    flex-direction: row;
    align-items: center;
  }
}

@media (min-width: 768px) {
  .desktop-nav {
    display: flex;
  }

  .mobile-toggle {
    display: none;
  }

  .mobile-drawer {
    display: none !important;
  }

  .hero-container {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .industries-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-top-row {
    grid-template-columns: 2fr 1fr 1fr 1.25fr;
  }

  .pilot-banner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (min-width: 1024px) {
  .workflow-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

/* ==========================================================================
   ACCESSIBILITY & REDUCED MOTION PREFERENCES
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .hero-demo-card.playing .wave-bar {
    animation: none !important;
    height: 12px;
  }
}

@media (prefers-contrast: more) {
  .site-header,
  .hero-demo-card,
  .audience-panel,
  .industry-card,
  .workflow-card,
  .proof-card,
  .code-preview-container {
    border-color: rgba(255, 255, 255, 0.4) !important;
  }
}

/* ==========================================================================
   THEME TOGGLE BUTTON (Light/Dark Switcher)
   ========================================================================== */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-sm);
  background-color: var(--theme-btn-signin-bg);
  border: 1px solid var(--theme-btn-signin-border);
  color: var(--theme-text-primary);
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.1s ease, color 0.15s ease;
  user-select: none;
  flex-shrink: 0;
}

.theme-toggle-btn:hover {
  background-color: var(--theme-surface-hover);
  border-color: var(--theme-border-highlight);
}

.theme-toggle-btn:active {
  transform: scale(0.95);
}

.theme-icon {
  display: block;
  transition: transform 0.2s ease;
}

/* Light mode (default): show moon to switch to dark mode */
html:not([data-theme="dark"]) .theme-toggle-btn .icon-sun,
html[data-theme="light"] .theme-toggle-btn .icon-sun {
  display: none;
}

html:not([data-theme="dark"]) .theme-toggle-btn .icon-moon,
html[data-theme="light"] .theme-toggle-btn .icon-moon {
  display: block;
}

/* Dark mode: show sun to switch to light mode */
html[data-theme="dark"] .theme-toggle-btn .icon-sun {
  display: block;
}

html[data-theme="dark"] .theme-toggle-btn .icon-moon {
  display: none;
}

/* Mobile Theme Button in Drawer */
.theme-toggle-mobile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.75rem 1.4rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background-color: var(--theme-btn-secondary-bg);
  color: var(--theme-btn-secondary-color);
  border: 1px solid var(--theme-btn-secondary-border);
  cursor: pointer;
  width: 100%;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.theme-toggle-mobile:hover {
  background-color: var(--theme-surface-hover);
  border-color: var(--theme-border-highlight);
}

html:not([data-theme="dark"]) .theme-toggle-mobile .icon-sun,
html[data-theme="light"] .theme-toggle-mobile .icon-sun {
  display: none;
}

html:not([data-theme="dark"]) .theme-toggle-mobile .icon-moon,
html[data-theme="light"] .theme-toggle-mobile .icon-moon {
  display: block;
}

html[data-theme="dark"] .theme-toggle-mobile .icon-sun {
  display: block;
}

html[data-theme="dark"] .theme-toggle-mobile .icon-moon {
  display: none;
}