/* Co-Harmony Landing Page Design System */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Fonts */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-title: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Shared Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 30px;

  /* Theme: Light */
  --bg-app: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.7);
  --bg-glass-hover: rgba(255, 255, 255, 0.9);
  --bg-card: rgba(255, 255, 255, 0.4);
  --border-glass: rgba(12, 113, 172, 0.15);
  --border-glass-focus: rgba(12, 113, 172, 0.6);
  
  --text-main: #0f172a;
  --text-muted: #334155;
  --text-light: #64748b;
  
  /* Accent Colors */
  --primary: #095480;
  --primary-hover: #074366;
  --primary-gradient: linear-gradient(135deg, #095480 0%, #0891b2 100%);
  --primary-glow: rgba(12, 113, 172, 0.15);

  --parent-sarah: #ec4899; /* Pink */
  --parent-sarah-bg: rgba(236, 72, 153, 0.08);
  --parent-sarah-border: rgba(236, 72, 153, 0.25);
  --parent-sarah-glow: rgba(236, 72, 153, 0.15);

  --parent-david: #0891b2; /* Cyan */
  --parent-david-bg: rgba(8, 145, 178, 0.08);
  --parent-david-border: rgba(8, 145, 178, 0.25);
  --parent-david-glow: rgba(8, 145, 178, 0.15);

  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.1);

  --glow-1: rgba(12, 113, 172, 0.12);
  --glow-2: rgba(236, 72, 153, 0.08);
  --shadow-main: 0 12px 40px 0 rgba(31, 38, 135, 0.08);
  --shadow-inset: inset 0 2px 4px 0 rgba(255, 255, 255, 0.6);
}



/* CSS Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-main);
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-app);
  color: var(--text-main);
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
  transition: background-color var(--transition-normal);
}

/* Background Glow Effects */
.glow-bg {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.65;
  transition: all var(--transition-normal);
}

.glow-bg-1 {
  width: 50vw;
  height: 50vw;
  top: -10vw;
  right: -10vw;
  background: var(--glow-1);
  animation: float-glow-1 25s infinite alternate ease-in-out;
}

.glow-bg-2 {
  width: 45vw;
  height: 45vw;
  bottom: 10vh;
  left: -10vw;
  background: var(--glow-2);
  animation: float-glow-2 20s infinite alternate ease-in-out;
}

.glow-bg-3 {
  width: 35vw;
  height: 35vw;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--primary-glow);
  opacity: 0.3;
}

@keyframes float-glow-1 {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-8%, 8%) scale(1.15); }
}

@keyframes float-glow-2 {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(8%, -8%) scale(1.1); }
}

/* Typography & Links */
h1, h2, h3, h4 {
  font-family: var(--font-title);
  font-weight: 700;
  line-height: 1.2;
}

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

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header styling */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-glass);
  background-color: rgba(15, 17, 26, 0.3);
  transition: border-color var(--transition-normal), background-color var(--transition-normal);
}
[data-theme="light"] .header {
  background-color: rgba(241, 245, 249, 0.4);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  font-family: var(--font-title);
  box-shadow: 0 4px 12px var(--primary-glow);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  font-family: var(--font-title);
}

.logo-slogan {
  font-size: 0.75rem;
  color: var(--text-light);
  letter-spacing: 0.5px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}



/* Button UI */
.btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  border: none;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: 0 4px 20px var(--primary-glow);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(6, 182, 212, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-secondary:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-glass-focus);
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  padding: 100px 0 120px 0;
  position: relative;
  overflow: hidden;
}

.hero-sky-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  background-image: url('serene_dawn_sky.png');
  background-size: cover;
  background-position: center bottom;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

.hero-sky-sunlight {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 80% 20%, rgba(255, 253, 235, 0.45) 0%, rgba(255, 255, 255, 0) 65%);
  z-index: 1;
  pointer-events: none;
}

.hero-sky-clouds-1 {
  position: absolute;
  top: 10%;
  left: 0;
  width: 200%;
  height: 60%;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='1200' height='300' viewBox='0 0 1200 300'><path d='M50 200 q80 -40 180 0 q120 -80 240 -20 q180 -60 360 20 q120 -30 220 0 v100 h-1000 z' fill='white' opacity='0.06'/></svg>");
  background-repeat: repeat-x;
  background-size: 50% 100%;
  z-index: 2;
  pointer-events: none;
  animation: cloud-drift-left 150s infinite linear;
}

.hero-sky-clouds-2 {
  position: absolute;
  top: 25%;
  left: 0;
  width: 200%;
  height: 50%;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='1200' height='300' viewBox='0 0 1200 300'><path d='M100 200 q100 -50 200 0 q150 -100 300 -20 q200 -80 400 20 q100 -30 200 0 v100 h-1100 z' fill='white' opacity='0.04'/></svg>");
  background-repeat: repeat-x;
  background-size: 50% 100%;
  z-index: 3;
  pointer-events: none;
  animation: cloud-drift-left 100s infinite linear;
}

@keyframes cloud-drift-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.hero-sky-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(241, 245, 249, 0.1) 0%, rgba(241, 245, 249, 0.6) 50%, rgba(241, 245, 249, 0.95) 85%, rgba(241, 245, 249, 1) 100%);
  z-index: 4;
  pointer-events: none;
}

.hero .waitlist-form-container,
.hero .widget-panel {
  background: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 20px 50px rgba(9, 84, 128, 0.08);
}

.hero-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 50px;
  text-align: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.badge {
  background: var(--parent-sarah-bg);
  border: 1px solid var(--parent-sarah-border);
  color: var(--parent-sarah);
  padding: 6px 14px;
  border-radius: var(--radius-xl);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 12px var(--parent-sarah-glow);
}

.badge-cyan {
  background: var(--parent-david-bg);
  border: 1px solid var(--parent-david-border);
  color: var(--parent-david);
  box-shadow: 0 4px 12px var(--parent-david-glow);
}

.hero h1 {
  font-size: 3.5rem;
  background: linear-gradient(135deg, var(--text-main) 30%, var(--text-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -1px;
}

.hero p.lead {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* Ticker & Live Counter */
.counter-box {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-light);
  background: rgba(255, 255, 255, 0.03);
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
}
[data-theme="light"] .counter-box {
  background: rgba(0, 0, 0, 0.02);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse-dot-key 2s infinite;
}

@keyframes pulse-dot-key {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

.counter-num {
  font-weight: 700;
  color: var(--success);
}

/* Waitlist Form */
.waitlist-form-container {
  width: 100%;
  max-width: 550px;
  margin: 0 auto;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-main);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: all var(--transition-normal);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-muted);
}

.form-input {
  width: 100%;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 14px 16px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}
[data-theme="light"] .form-input {
  background: rgba(255, 255, 255, 0.6);
}

.form-input:focus {
  border-color: var(--border-glass-focus);
  box-shadow: 0 0 0 4px var(--primary-glow);
  background: rgba(0, 0, 0, 0.25);
}
[data-theme="light"] .form-input:focus {
  background: #fff;
}

.role-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.role-option {
  position: relative;
}

.role-option input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.role-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 8px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: center;
  transition: all var(--transition-fast);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-light);
}
[data-theme="light"] .role-card {
  background: rgba(0, 0, 0, 0.02);
}

.role-card svg {
  width: 20px;
  height: 20px;
  stroke: var(--text-light);
  transition: all var(--transition-fast);
}

.role-option input:checked + .role-card {
  border-color: var(--primary);
  background: var(--primary-glow);
  color: var(--text-main);
  box-shadow: 0 4px 12px var(--primary-glow);
}

.role-option input:checked + .role-card svg {
  stroke: var(--primary);
}

.submit-btn {
  width: 100%;
  padding: 16px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  margin-top: 10px;
}

/* Success Card */
.waitlist-success-container {
  display: none;
  flex-direction: column;
  align-items: center;
  text-align: center;
  animation: fadeIn 0.5s ease-out forwards;
}

.success-icon-box {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--success-bg);
  border: 1px solid var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--success);
  margin-bottom: 20px;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.2);
}

.success-icon-box svg {
  width: 32px;
  height: 32px;
}

.success-title {
  font-size: 1.75rem;
  margin-bottom: 10px;
}

.success-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.position-display {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  padding: 20px 40px;
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.position-number {
  font-size: 3rem;
  font-weight: 800;
  font-family: var(--font-title);
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 6px;
}

.position-label {
  font-size: 0.75rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.referral-box {
  width: 100%;
  margin-bottom: 24px;
}

.referral-title {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-muted);
  text-align: left;
}

.referral-input-wrapper {
  display: flex;
  gap: 10px;
}

.referral-input {
  flex: 1;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 12px 14px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-family: monospace;
}
[data-theme="light"] .referral-input {
  background: rgba(255, 255, 255, 0.6);
}

.btn-copy {
  padding: 12px 18px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.btn-copy:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-glass-focus);
}

.social-share-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  width: 100%;
  margin-bottom: 24px;
}

.btn-share {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--border-glass);
  background: var(--bg-glass);
  color: var(--text-main);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-share:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-glass-focus);
  transform: translateY(-2px);
}

.btn-share svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.milestones-box {
  width: 100%;
  text-align: left;
  border-top: 1px solid var(--border-glass);
  padding-top: 20px;
}

.milestones-title {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}

.milestone-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.milestone-check {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1.5px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.02);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.milestone-item.achieved .milestone-check {
  border-color: var(--success);
  background: var(--success-bg);
  color: var(--success);
}

.milestone-item.achieved .milestone-check::after {
  content: "✓";
  font-size: 0.65rem;
  font-weight: bold;
}

.milestone-item.achieved {
  color: var(--text-main);
}

/* Tone Guard Sandbox Widget */
.widget-panel {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-main);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.widget-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-glass);
  padding-bottom: 14px;
}

.widget-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
}

.widget-title svg {
  color: var(--parent-sarah);
  width: 20px;
  height: 20px;
}

.sandbox-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tone-selector-label {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 4px;
  display: block;
}

.preset-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.preset-pill {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: var(--radius-xl);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}
[data-theme="light"] .preset-pill {
  background: rgba(0, 0, 0, 0.02);
}

.preset-pill:hover, .preset-pill.active {
  background: var(--primary-glow);
  border-color: var(--primary);
  color: var(--text-main);
}

.text-area-box {
  position: relative;
  width: 100%;
}

.sandbox-textarea {
  width: 100%;
  height: 80px;
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  font-size: 0.85rem;
  color: var(--text-main);
  resize: none;
  transition: all var(--transition-fast);
}
[data-theme="light"] .sandbox-textarea {
  background: rgba(255, 255, 255, 0.5);
}

.sandbox-textarea:focus {
  border-color: var(--border-glass-focus);
}

.sandbox-actions {
  display: flex;
  justify-content: flex-end;
}

.btn-harmonise {
  padding: 10px 20px;
  font-size: 0.85rem;
  border-radius: var(--radius-md);
}

.output-panel {
  background: rgba(16, 185, 129, 0.04);
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: var(--radius-md);
  padding: 16px;
  min-height: 80px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: all var(--transition-normal);
}

.output-panel.processing {
  background: rgba(12, 113, 172, 0.04);
  border-color: rgba(12, 113, 172, 0.15);
}

.output-header {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
  color: var(--success);
}

.output-panel.processing .output-header {
  color: var(--primary);
}

.output-header svg {
  width: 14px;
  height: 14px;
}

.output-content {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-main);
}

.output-placeholder {
  color: var(--text-light);
  font-style: italic;
}

/* Typing indicator micro-animation */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 18px;
}

.typing-indicator span {
  width: 6px;
  height: 6px;
  background-color: var(--primary);
  border-radius: 50%;
  animation: typing-bounce 1s infinite ease-in-out;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

/* Feature Grid Section */
.features-section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.section-header h2 {
  font-size: 2.75rem;
  background: linear-gradient(135deg, var(--text-main) 30%, var(--text-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-main);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.feature-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-glass-focus);
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.4);
}

.feature-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-glow);
  border: 1px solid rgba(12, 113, 172, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon-box {
  background: var(--primary-gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.feature-card:nth-child(2) .feature-icon-box {
  background: rgba(236, 72, 153, 0.1);
  color: var(--parent-sarah);
  border-color: rgba(236, 72, 153, 0.2);
}
.feature-card:nth-child(2):hover .feature-icon-box {
  background: linear-gradient(135deg, #ec4899 0%, #f472b6 100%);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 14px var(--parent-sarah-glow);
}

.feature-card:nth-child(3) .feature-icon-box {
  background: rgba(6, 182, 212, 0.1);
  color: var(--parent-david);
  border-color: rgba(6, 182, 212, 0.2);
}
.feature-card:nth-child(3):hover .feature-icon-box {
  background: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 14px var(--parent-david-glow);
}

.feature-card h3 {
  font-size: 1.2rem;
  font-family: var(--font-title);
  color: var(--text-main);
}

.feature-card p {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* Feature card color overrides */
.feature-card.card-pink .feature-icon-box {
  background: rgba(236, 72, 153, 0.1);
  color: var(--parent-sarah);
  border-color: rgba(236, 72, 153, 0.2);
}

.feature-card.card-pink:hover .feature-icon-box {
  background: linear-gradient(135deg, #ec4899 0%, #f472b6 100%);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 14px var(--parent-sarah-glow);
}

.feature-card.card-cyan .feature-icon-box {
  background: rgba(6, 182, 212, 0.1);
  color: var(--parent-david);
  border-color: rgba(6, 182, 212, 0.2);
}

.feature-card.card-cyan:hover .feature-icon-box {
  background: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 14px var(--parent-david-glow);
}

/* Benefits Section */
.benefits-section {
  padding: 80px 0;
  position: relative;
  border-top: 1px solid var(--border-glass);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.benefit-role-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 40px 30px;
  box-shadow: var(--shadow-main);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.benefit-role-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
}

.benefit-role-card.role-sarah::before {
  background: linear-gradient(90deg, var(--parent-sarah) 0%, #f472b6 100%);
}

.benefit-role-card.role-david::before {
  background: linear-gradient(90deg, var(--parent-david) 0%, #22d3ee 100%);
}

.benefit-role-card:hover {
  transform: translateY(-10px);
  background: var(--bg-glass-hover);
  border-color: var(--border-glass-focus);
}

.benefit-role-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  border: 1.5px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 10px;
  transition: all var(--transition-normal);
}
[data-theme="light"] .benefit-role-icon {
  background: rgba(0, 0, 0, 0.02);
}

.benefit-role-card.role-sarah .benefit-role-icon {
  color: var(--parent-sarah);
}

.benefit-role-card.role-david .benefit-role-icon {
  color: var(--parent-david);
}

.benefit-role-card:hover .benefit-role-icon {
  transform: scale(1.1);
  background: var(--primary-gradient);
  color: #fff;
  border-color: transparent;
}

.benefit-role-card.role-sarah:hover .benefit-role-icon {
  background: linear-gradient(135deg, #ec4899 0%, #f472b6 100%);
}

.benefit-role-card.role-david:hover .benefit-role-icon {
  background: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
}

.benefit-role-card h3 {
  font-size: 1.5rem;
  font-family: var(--font-title);
}

.benefit-role-card p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.benefit-points {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
  margin-top: 10px;
  border-top: 1px solid var(--border-glass);
  padding-top: 20px;
}

.benefit-point-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.benefit-point-item svg {
  width: 16px;
  height: 16px;
  color: var(--success);
  flex-shrink: 0;
}

/* App Showcase Section (Split Preview) */
.showcase-section {
  padding: 80px 0;
  position: relative;
  background-color: rgba(15, 17, 26, 0.2);
  border-top: 1px solid var(--border-glass);
  border-bottom: 1px solid var(--border-glass);
}
[data-theme="light"] .showcase-section {
  background-color: rgba(255, 255, 255, 0.3);
}

.showcase-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 50px;
  text-align: center;
}

.showcase-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.showcase-bullets {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  width: 100%;
}

.bullet-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  max-width: 500px;
}

.bullet-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}
[data-theme="light"] .bullet-icon {
  background: rgba(0,0,0,0.02);
}

.bullet-text h4 {
  font-size: 1rem;
  margin-bottom: 4px;
  font-family: var(--font-title);
}

.bullet-text p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Interactive Preview Mock Dashboard */
.preview-mock-window {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-main);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 480px;
  transition: all var(--transition-normal);
}

.mock-window-header {
  height: 48px;
  background: rgba(0, 0, 0, 0.25);
  border-bottom: 1px solid var(--border-glass);
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mock-window-dots {
  display: flex;
  gap: 6px;
}

.mock-window-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--border-glass);
}

.mock-window-dots span:nth-child(1) { background-color: #ef4444; }
.mock-window-dots span:nth-child(2) { background-color: #f59e0b; }
.mock-window-dots span:nth-child(3) { background-color: #10b981; }

.mock-window-title {
  font-size: 0.75rem;
  color: var(--text-light);
  font-family: monospace;
}

.mock-window-body {
  flex: 1;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  overflow-y: auto;
}

/* Dashboard Widgets inside preview */
.preview-status-bar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.preview-status-card {
  flex: 1;
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
[data-theme="light"] .preview-status-card {
  background: rgba(255, 255, 255, 0.4);
}

.preview-status-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--text-light);
}

.preview-status-val {
  font-size: 0.95rem;
  font-weight: 700;
}

.preview-calendar {
  background: rgba(0, 0, 0, 0.1);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
[data-theme="light"] .preview-calendar {
  background: rgba(255, 255, 255, 0.3);
}

.preview-calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.preview-calendar-month {
  font-size: 0.8rem;
  font-weight: 700;
}

.preview-calendar-nav {
  display: flex;
  gap: 6px;
}

.preview-calendar-nav span {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  cursor: pointer;
}

.preview-calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  text-align: center;
  font-size: 0.65rem;
}

.calendar-day-header {
  font-weight: 700;
  color: var(--text-light);
}

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  color: var(--text-muted);
}

.calendar-day.sarah-period {
  background: var(--parent-sarah-bg);
  border: 1.5px solid var(--parent-sarah-border);
  color: var(--parent-sarah);
  font-weight: 600;
}

.calendar-day.david-period {
  background: var(--parent-david-bg);
  border: 1.5px solid var(--parent-david-border);
  color: var(--parent-david);
  font-weight: 600;
}

.calendar-day.today {
  box-shadow: inset 0 0 0 1.5px var(--primary);
  font-weight: bold;
  color: var(--text-main);
}

.calendar-day.transition-day {
  background: linear-gradient(135deg, var(--parent-david-bg) 0%, var(--parent-sarah-bg) 100%);
  border: 1.5px dashed var(--primary);
}

.preview-feed {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feed-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-glass);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
}
[data-theme="light"] .feed-item {
  background: rgba(255, 255, 255, 0.4);
}

.feed-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.feed-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

.feed-dot.david { background: var(--parent-david); }
.feed-dot.sarah { background: var(--parent-sarah); }

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

.feed-desc strong {
  color: var(--text-main);
}

.feed-time {
  color: var(--text-light);
  font-size: 0.65rem;
}

/* Call to Action Section */
.cta-section {
  padding: 100px 0;
  position: relative;
  text-align: center;
}

.cta-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  max-width: 900px;
  margin: 0 auto;
  box-shadow: var(--shadow-main);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.cta-card h2 {
  font-size: 2.5rem;
}

.cta-card p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  line-height: 1.6;
}

/* Footer Section */
.footer {
  padding: 60px 0;
  border-top: 1px solid var(--border-glass);
  background-color: rgba(15, 17, 26, 0.4);
  font-size: 0.85rem;
  color: var(--text-light);
  transition: all var(--transition-normal);
}
[data-theme="light"] .footer {
  background-color: rgba(241, 245, 249, 0.4);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-logo span {
  font-family: var(--font-title);
  font-weight: 700;
  color: var(--text-main);
}

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

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

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero {
    padding: 60px 0;
  }
  
  .hero h1 {
    font-size: 2.75rem;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .showcase-grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }
  
  .preview-mock-window {
    height: 400px;
  }

  .benefits-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-sky-bg {
    background-attachment: scroll;
  }
}

@media (max-width: 768px) {
  .header-container {
    height: 70px;
  }
  
  .logo-slogan {
    display: none;
  }
  
  .hero h1 {
    font-size: 2.25rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .section-header h2 {
    font-size: 2rem;
  }

  .role-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  
  .cta-card {
    padding: 40px 20px;
  }
  
  .cta-card h2 {
    font-size: 1.85rem;
  }
  
  .footer-container {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
}

/* AI Labs Playground Tabs & Elements */
.playground-tabs {
  display: flex;
  gap: 6px;
  background: rgba(0, 0, 0, 0.05);
  padding: 4px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  border: 1px solid var(--border-glass);
}
[data-theme="light"] .playground-tabs {
  background: rgba(0, 0, 0, 0.02);
}

.play-tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-light);
  padding: 10px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.play-tab-btn:hover {
  color: var(--text-main);
}

.play-tab-btn.active {
  background: var(--bg-glass);
  color: var(--text-main);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}
[data-theme="light"] .play-tab-btn.active {
  background: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

/* Mock Receipt scanner */
.mock-receipt-preview {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid var(--border-glass);
  padding: 16px;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.receipt-file-icon {
  width: 44px;
  height: 44px;
  background: var(--primary-glow);
  border: 1.5px solid var(--border-glass);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.receipt-file-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: left;
}

.receipt-filename {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.receipt-filesize {
  font-size: 0.7rem;
  color: var(--text-light);
}

/* Mock Chat deadlock */
.mock-chat-deadlock {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid var(--border-glass);
  padding: 16px;
  border-radius: var(--radius-md);
}

.deadlock-bubble {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  line-height: 1.4;
  text-align: left;
}

.deadlock-bubble.david {
  background: var(--parent-david-bg);
  border: 1.5px solid var(--parent-david-border);
  align-self: flex-start;
  max-width: 85%;
  color: var(--text-main);
}

.deadlock-bubble.sarah {
  background: var(--parent-sarah-bg);
  border: 1.5px solid var(--parent-sarah-border);
  align-self: flex-end;
  max-width: 85%;
  color: var(--text-main);
}

/* Centering Layout Limits */
#co-harmony-ai-playground,
.preview-mock-window {
  max-width: 750px;
  width: 100%;
  margin: 0 auto;
}

/* Additional Custom Waitlist Form Styles */
.form-row {
  display: flex;
  gap: 16px;
}
.flex-1 {
  flex: 1;
}
.optional-label {
  font-size: 0.75rem;
  opacity: 0.7;
  font-weight: normal;
}
.captcha-input-wrapper {
  display: flex;
  gap: 12px;
}
.btn-refresh-captcha {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 0 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.btn-refresh-captcha:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-glass-focus);
}
.btn-refresh-captcha svg {
  width: 18px;
  height: 18px;
  stroke: var(--text-light);
  transition: stroke var(--transition-fast);
}
.btn-refresh-captcha:hover svg {
  stroke: var(--primary);
}
.consent-group {
  margin-top: 15px;
  margin-bottom: 20px;
}
.consent-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.consent-checkbox-label input[type="checkbox"] {
  margin-top: 3px;
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
  cursor: pointer;
}
.consent-text a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}
.consent-text a:hover {
  text-decoration: underline;
}
.error-msg-box {
  background: var(--parent-sarah-bg);
  border: 1px solid var(--parent-sarah-border);
  color: var(--parent-sarah);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  margin-bottom: 20px;
  text-align: left;
  animation: fadeIn 0.3s ease-out;
  box-shadow: 0 4px 12px var(--parent-sarah-glow);
}
@media (max-width: 480px) {
  .form-row {
    flex-direction: column;
    gap: 0;
  }
}

/* Contact Section */
.contact-section {
  padding: 80px 0;
  position: relative;
  z-index: 2;
}
.contact-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-main);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.contact-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(31, 38, 135, 0.12);
}
.contact-email-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-weight: 600;
  color: #fff;
  background: var(--primary-gradient);
  border: none;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 15px var(--primary-glow);
  margin-top: 16px;
}
.contact-email-btn:hover {
  transform: scale(1.03);
  box-shadow: 0 6px 20px rgba(9, 84, 128, 0.35);
  color: #fff;
}
.contact-email-btn svg {
  transition: transform var(--transition-fast);
}
.contact-email-btn:hover svg {
  transform: rotate(5deg) scale(1.1);
}