/* ========================================
   Big Daddy GEO Inc. — Linear-Style Dark Theme
   ======================================== */

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

:root {
  --bg: #09090B;
  --bg-subtle: #0F0F13;
  --bg-card: #13131A;
  --bg-card-hover: #1A1A24;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --text: #FAFAFA;
  --text-secondary: #A1A1AA;
  --text-muted: #71717A;
  --accent: #8B5CF6;
  --accent-2: #06B6D4;
  --accent-glow: rgba(139, 92, 246, 0.15);
  --gradient: linear-gradient(135deg, #8B5CF6 0%, #06B6D4 100%);
  --radius: 12px;
  --radius-lg: 20px;
  --radius-sm: 8px;
  --shadow: 0 0 0 1px var(--border);
  --shadow-hover: 0 0 0 1px var(--border-hover), 0 8px 32px rgba(0,0,0,0.4);
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

img { max-width: 100%; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 24px;
  transition: var(--transition);
}

.nav.scrolled {
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.logo-icon {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color var(--transition);
  font-weight: 500;
}

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-lg { padding: 14px 28px; font-size: 15px; }
.btn-full { width: 100%; }

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.5);
  transform: translateY(-1px);
}

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

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--border-hover);
  background: rgba(255,255,255,0.03);
}

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

.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(139, 92, 246, 0.05);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(139, 92, 246, 0.12) 0%, rgba(6, 182, 212, 0.06) 40%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 70%);
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content { max-width: 560px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 100px;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 24px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22C55E;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-subtitle strong {
  color: var(--text);
}

.hero-cta {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.hero-proof {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

.proof-avatars {
  display: flex;
}

.avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: white;
  border: 2px solid var(--bg);
  margin-left: -6px;
}

.avatar:first-child { margin-left: 0; }

/* --- Hero Visual (AI Orb) --- */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.ai-orb {
  position: relative;
  width: 340px;
  height: 340px;
}

.orb-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(139, 92, 246, 0.15);
  animation: orbit-spin 20s linear infinite;
}

.orb-ring-2 {
  inset: 30px;
  border-color: rgba(6, 182, 212, 0.12);
  animation-direction: reverse;
  animation-duration: 15s;
}

@keyframes orbit-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.orb-core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  text-align: center;
  line-height: 1.2;
  box-shadow: 0 0 60px rgba(139, 92, 246, 0.4);
}

.ai-logo {
  position: absolute;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  animation: float 6s ease-in-out infinite;
}

.ai-logo-1 { top: 10px; left: 50%; transform: translateX(-50%); animation-delay: 0s; }
.ai-logo-2 { top: 50%; right: 10px; transform: translateY(-50%); animation-delay: 1.5s; }
.ai-logo-3 { bottom: 10px; left: 50%; transform: translateX(-50%); animation-delay: 3s; }
.ai-logo-4 { top: 50%; left: 10px; transform: translateY(-50%); animation-delay: 4.5s; }

@keyframes float {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, -8px); }
}

.ai-logo-2 { animation-name: float-y; }
.ai-logo-4 { animation-name: float-y; }

@keyframes float-y {
  0%, 100% { transform: translateY(-50%); }
  50% { transform: translateY(calc(-50% - 8px)); }
}

/* --- Sections --- */
.section {
  padding: 120px 0;
  position: relative;
}

.section-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(32px, 3.5vw, 48px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  max-width: 640px;
}

.section-desc {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 48px;
}

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

/* --- Problem Section --- */
.section-problem {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.problem-card {
  padding: 32px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.problem-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.problem-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.problem-icon-red {
  background: rgba(239, 68, 68, 0.1);
  color: #EF4444;
}

.problem-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.problem-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* --- Steps (How It Works) --- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step-card {
  position: relative;
  padding: 32px;
}

.step-number {
  font-size: 48px;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 20px;
  opacity: 0.6;
}

.step-line {
  width: 40px;
  height: 2px;
  background: var(--gradient);
  margin-bottom: 20px;
  border-radius: 2px;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.step-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* --- Features --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 32px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.feature-card-large {
  grid-column: span 2;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(139, 92, 246, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* Score bar preview */
.feature-preview {
  margin-top: 24px;
  padding: 20px;
  background: rgba(0,0,0,0.3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.score-bar {
  height: 32px;
  background: rgba(255,255,255,0.05);
  border-radius: 100px;
  overflow: hidden;
  margin-bottom: 8px;
}

.score-fill {
  height: 100%;
  background: var(--gradient);
  border-radius: 100px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 12px;
  font-weight: 700;
  font-size: 14px;
  animation: score-grow 2s ease-out forwards;
  animation-play-state: paused;
}

.score-fill.animate {
  animation-play-state: running;
}

@keyframes score-grow {
  from { width: 0% !important; }
}

.score-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- Social Proof --- */
.section-proof {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.proof-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  padding: 48px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin-bottom: 64px;
}

.proof-stat {
  text-align: center;
}

.proof-number {
  display: block;
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 8px;
}

.proof-label {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 180px;
  display: block;
}

.proof-divider {
  width: 1px;
  height: 60px;
  background: var(--border);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.testimonial-card {
  padding: 32px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.testimonial-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.testimonial-stars {
  color: #F59E0B;
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.testimonial-card p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-style: italic;
}

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

.testimonial-author strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
}

.testimonial-author span {
  font-size: 12px;
  color: var(--text-muted);
}

/* --- Pricing --- */
.section-pricing {
  text-align: center;
}

.section-pricing .section-title,
.section-pricing .section-desc {
  margin-left: auto;
  margin-right: auto;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  text-align: left;
}

.pricing-card {
  padding: 36px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

.pricing-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.pricing-card-featured {
  border-color: rgba(139, 92, 246, 0.3);
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.06) 0%, var(--bg-card) 100%);
}

.pricing-card-featured:hover {
  border-color: rgba(139, 92, 246, 0.5);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  background: var(--gradient);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.pricing-tier {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 2px;
  margin-bottom: 12px;
}

.price-currency {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-secondary);
}

.price-amount {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
}

.price-period {
  font-size: 16px;
  color: var(--text-muted);
  font-weight: 500;
}

.pricing-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.5;
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
  flex: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.pricing-features svg { flex-shrink: 0; }

/* --- Waitlist CTA --- */
.section-waitlist {
  padding: 80px 0 120px;
}

.waitlist-box {
  position: relative;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  padding: 56px 48px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.waitlist-glow {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.waitlist-box h2 {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  position: relative;
}

.waitlist-box > p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  position: relative;
}

.waitlist-form {
  position: relative;
  margin-bottom: 24px;
}

.form-row {
  display: flex;
  gap: 8px;
}

.form-row-extra {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.form-input {
  flex: 1;
  padding: 14px 18px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  outline: none;
  transition: all var(--transition);
}

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-message {
  margin-top: 12px;
  font-size: 14px;
  font-weight: 500;
  min-height: 20px;
}

.form-message.success { color: #22C55E; }
.form-message.error { color: #EF4444; }

.waitlist-trust {
  display: flex;
  justify-content: center;
  gap: 24px;
  font-size: 13px;
  color: var(--text-muted);
  position: relative;
}

/* --- Footer --- */
.footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 280px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 64px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
  padding: 6px 0;
  transition: color var(--transition);
}

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

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
}

/* --- Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }

/* --- Spinner --- */
.spinner {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

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

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

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

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

  .hero-proof { justify-content: center; }

  .hero-visual { display: none; }

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

  .feature-card-large { grid-column: span 2; }
}

@media (max-width: 768px) {
  .section { padding: 80px 0; }

  .nav-links { display: none; }

  .problem-grid,
  .steps-grid,
  .pricing-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

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

  .feature-card-large {
    grid-column: span 1;
  }

  .proof-banner {
    flex-direction: column;
    gap: 32px;
    padding: 32px;
  }

  .proof-divider {
    width: 60px;
    height: 1px;
  }

  .form-row {
    flex-direction: column;
  }

  .form-row-extra {
    flex-direction: column;
  }

  .waitlist-box {
    padding: 40px 24px;
  }

  .waitlist-trust {
    flex-direction: column;
    gap: 8px;
  }

  .footer-inner {
    flex-direction: column;
  }

  .footer-links {
    gap: 32px;
    flex-wrap: wrap;
  }

  .hero-title {
    font-size: 36px;
  }

  .section-title {
    font-size: 28px;
  }
}

/* --- Selection Color --- */
::selection {
  background: rgba(139, 92, 246, 0.3);
  color: white;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}