/* ==========================================================================
   CIRCUS YOLO — MODERN HIGH-END LANDING PAGE
   Matching cofounder.co daylight & luxury frosted glass styling
   ========================================================================== */

:root {
  --font-sans: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-display: 'Outfit', var(--font-sans);

  /* Daylight & Frosted Glass Palette */
  --bg-page: #fbfbf8;
  --bg-surface: #f5f5f2;
  --bg-surface-elevated: #ffffff;
  
  --text-primary: #18181b;
  --text-secondary: rgba(24, 24, 27, 0.78);
  --text-tertiary: rgba(24, 24, 27, 0.52);
  
  --accent-gold: #b45309;
  --accent-gold-light: #f59e0b;
  --accent-gold-bg: rgba(245, 158, 11, 0.12);
  
  /* Frosted Glass Tokens */
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-bg-hover: rgba(255, 255, 255, 0.9);
  --glass-border: rgba(255, 255, 255, 0.85);
  --glass-border-subtle: rgba(0, 0, 0, 0.08);
  --glass-shadow: 0 10px 30px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --glass-blur: 20px;

  --nav-height: 80px;
  --max-width: 1400px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-sans);
}

body {
  min-height: 100vh;
  background-color: var(--bg-page);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.5;
  position: relative;
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  padding: 18px 24px;
  transition: background-color var(--transition-normal), backdrop-filter var(--transition-normal), border-color var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(251, 251, 248, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.header-container {
  width: 100%;
  max-width: var(--max-width);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Brand Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  transition: opacity var(--transition-fast);
}

.brand-logo:hover {
  opacity: 0.85;
}

.brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--glass-border-subtle);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  color: var(--accent-gold-light);
}

.brand-text {
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #18181b;
}

.brand-text span {
  color: var(--accent-gold-light);
}

/* Glass Pill Navigation */
.nav-pill-group {
  display: flex;
  align-items: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-md);
  padding: 4px 6px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--glass-shadow);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.05);
}

.nav-divider {
  width: 1px;
  height: 16px;
  background: rgba(0, 0, 0, 0.1);
  margin: 0 4px;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 18px;
  background: #18181b;
  color: #ffffff;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  border: none;
}

.btn-header-cta:hover {
  background: #000000;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-sm);
  width: 40px;
  height: 40px;
  color: var(--text-primary);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  backdrop-filter: blur(var(--glass-blur));
}

/* ==========================================================================
   HERO SECTION (DAYLIGHT & CRISP DARK TYPOGRAPHY)
   ========================================================================== */

.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  overflow: hidden;
  padding-top: clamp(110px, 14vh, 150px);
  padding-bottom: 60px;
  z-index: 1;
}

/* Video Background Layer - 100% Brightness & No Darkening */
.hero-video-container {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.hero-video {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
  opacity: 1;
}

/* Gradient overlay completely disabled */
.hero-gradient-overlay {
  display: none;
}

/* Hero Content Wrapper */
.hero-container {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max-width);
  padding: 0 24px;
  margin: 0 auto;
  display: flex;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 720px;
}

/* Badge Pill */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-full);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #92400e;
  margin-bottom: 24px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  animation: fadeInDown 0.8s ease backwards;
}

.hero-badge-pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-gold-light);
  box-shadow: 0 0 8px var(--accent-gold-light);
  animation: pulseGlow 2s infinite ease-in-out;
}

/* Main Headline in crisp dark text (like cofounder.co) */
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 5.5vw, 4.5rem);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.035em;
  margin: 0 0 20px 0;
  color: #18181b;
  text-shadow: none;
  filter: none;
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.1s backwards;
}

.hero-subtitle {
  font-size: clamp(1.0625rem, 1.25vw, 1.25rem);
  line-height: 1.55;
  color: rgba(24, 24, 27, 0.82);
  font-weight: 460;
  max-width: 540px;
  margin-bottom: 32px;
  text-shadow: none;
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s backwards;
}

/* CTA Buttons */
.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s backwards;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 24px;
  background: #18181b;
  color: #ffffff;
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  border: none;
}

.btn-primary:hover {
  background: #000000;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.22);
}

.btn-glass {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 22px;
  background: rgba(255, 255, 255, 0.75);
  color: #18181b;
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(0, 0, 0, 0.2);
  transform: translateY(-2px);
}

/* ==========================================================================
   3D FLOATING GLASS CARDS / STACK (HERO RIGHT)
   ========================================================================== */

.hero-visual-pane {
  display: flex;
  justify-content: center;
  align-items: center;
  perspective: 1000px;
  animation: fadeIn 1s ease 0.3s backwards;
}

.floating-stack-card {
  position: relative;
  width: 100%;
  max-width: 440px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(255, 255, 255, 0.9) inset;
  transform: rotateY(-8deg) rotateX(4deg) translateZ(10px);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.floating-stack-card:hover {
  transform: rotateY(0deg) rotateX(0deg) translateZ(20px);
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.12), 0 0 20px rgba(245, 158, 11, 0.15);
}

.stack-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  padding-bottom: 16px;
  margin-bottom: 18px;
}

.card-title-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.card-time-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
  background: rgba(0, 0, 0, 0.05);
  padding: 2px 8px;
  border-radius: 4px;
}

/* Feature List Inside Card */
.stack-feature-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stack-feature-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.stack-feature-item:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(0, 0, 0, 0.12);
  transform: translateX(4px);
}

.feature-icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.25);
  color: var(--accent-gold);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.feature-info {
  display: flex;
  flex-direction: column;
}

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

.feature-info-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* Floating Mini Widget */
.floating-sub-widget {
  margin-top: 18px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px dashed rgba(0, 0, 0, 0.12);
}

.widget-stat {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.stat-number {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--accent-gold);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ==========================================================================
   SOCIAL PROOF & HIGHLIGHTS SECTION (~1400px Viewport Coverage)
   ========================================================================== */

.highlights-section {
  position: relative;
  z-index: 2;
  width: 100%;
  background: var(--bg-surface);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  padding: 48px 24px 72px;
}

.highlights-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.highlights-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  width: 100%;
  margin-bottom: 32px;
}

.highlight-tile {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 24px;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
  transition: all var(--transition-normal);
}

.highlight-tile:hover {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.12);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.07);
}

.highlight-icon {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.highlight-tile-title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

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

/* Shimmer Footer Note */
.shimmer-banner {
  text-align: center;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  font-weight: 450;
  display: flex;
  align-items: center;
  gap: 8px;
}

.shimmer {
  background: linear-gradient(90deg, #b45309 0%, #18181b 50%, #b45309 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: textShimmer 3s linear infinite;
  font-weight: 600;
}

/* Simple Footer Area */
.simple-footer {
  width: 100%;
  max-width: var(--max-width);
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ==========================================================================
   MODAL / POPUP
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  padding: 32px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.15);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-backdrop.active .modal-card {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #18181b;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 4px;
}

.modal-close-btn:hover {
  color: var(--text-primary);
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-input, .form-textarea {
  background: #fbfbf8;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  transition: border-color var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: #18181b;
  box-shadow: 0 0 0 2px rgba(24, 24, 27, 0.1);
}

/* ==========================================================================
   ANIMATIONS & KEYFRAMES
   ========================================================================== */

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulseGlow {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.4);
    opacity: 0.6;
  }
}

@keyframes textShimmer {
  to {
    background-position: 200% center;
  }
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero-content {
    align-items: center;
    max-width: 100%;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-visual-pane {
    width: 100%;
  }

  .floating-stack-card {
    transform: none;
  }

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

@media (max-width: 768px) {
  .nav-pill-group {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

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

  .simple-footer {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}