/* Global Variables & Theming - Fluid Identity */
:root {
  --bg-color: #030303;
  --surface-color: rgba(20, 20, 25, 0.4);
  --surface-color-light: rgba(40, 40, 45, 0.4);
  --text-primary: #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.6);
  --accent-iridescent: linear-gradient(135deg, #b0bbff, #f0c3f5, #ffdac2);
  --danger: #FF3B30;
  --success: #34C759;
  
  --font-serif: 'Playfair Display', 'Georgia', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;
  
  --transition-fast: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-normal: 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
  
  --max-width: 1100px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  font-weight: 400;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

a:hover {
  opacity: 0.7;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  line-height: 1.1;
  font-weight: 400;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(3rem, 7vw, 5.5rem);
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  text-align: center;
  margin-bottom: 4rem;
}

h3 {
  font-size: 1.75rem;
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: -0.01em;
}

p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 1.125rem;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 8rem 0;
}

/* Components */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.5rem;
  border-radius: 100px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 1.05rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  outline: none;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  min-height: 48px; /* Touch target */
}

.btn-primary {
  background: rgba(255, 255, 255, 0.9);
  color: #000;
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.15);
}

.btn-primary:hover {
  background: #fff;
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 40px rgba(255, 255, 255, 0.25);
  opacity: 1; /* override anchor hover */
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
  opacity: 1;
}

/* Glassmorphism Cards */
.glass-card {
  background: var(--surface-color);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 3rem;
  transition: transform var(--transition-normal), background var(--transition-normal);
}

.glass-card:hover {
  transform: translateY(-8px);
  background: rgba(30, 30, 38, 0.5);
  border-color: rgba(255, 255, 255, 0.15);
}

/* Header/Nav */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 0;
  z-index: 1000;
  background: rgba(3, 3, 3, 0.5);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
  color: #fff;
  letter-spacing: 0.05em;
}

.logo:hover {
  opacity: 1;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 120%;
  background-image: url('assets/fluid_blob.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: -2;
  animation: slowPan 30s ease-in-out infinite alternate;
  opacity: 0.6;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, transparent 0%, var(--bg-color) 80%);
  z-index: -1;
}

@keyframes slowPan {
  0% { transform: scale(1.05) translateY(0); }
  100% { transform: scale(1.1) translateY(-2%); }
}

.hero p.subtitle {
  font-size: 1.35rem;
  max-width: 650px;
  margin: 0 auto 3.5rem;
  font-weight: 300;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

/* Media Cards */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
}

.media-card {
  text-align: center;
  padding: 3rem 2rem;
}

/* Pricing Table */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  align-items: end; /* align bottoms for aesthetic */
}

.pricing-card {
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.pricing-card.popular {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: var(--bg-color);
  padding: 6px 20px;
  border-radius: 30px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.pricing-header {
  text-align: center;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  padding-bottom: 2.5rem;
}

.price {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  color: var(--text-primary);
  margin-top: 1rem;
}

.price span {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.pricing-features {
  flex-grow: 1;
}

.pricing-features li {
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  color: var(--text-primary);
  font-size: 1.05rem;
}

.pricing-features li::before {
  content: '·';
  font-size: 2rem;
  line-height: 0;
  margin-right: 12px;
  color: var(--text-secondary);
}

.pricing-card .btn {
  width: 100%;
  margin-top: 3rem;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 2rem 0;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 500;
  font-size: 1.25rem;
  font-family: var(--font-serif);
}

.faq-icon {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 1.5rem;
  color: var(--text-secondary);
  transition: transform var(--transition-normal);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  color: var(--text-secondary);
}

.faq-answer p {
  margin-top: 1.5rem;
  margin-bottom: 0;
}

.faq-item input[type="checkbox"] {
  display: none;
}

.faq-item input[type="checkbox"]:checked ~ .faq-answer {
  max-height: 300px;
}

.faq-item input[type="checkbox"]:checked ~ .faq-question .faq-icon {
  transform: rotate(45deg);
}

/* Footer */
.footer {
  background: transparent;
  padding: 6rem 0 3rem;
}

.footer-content {
  text-align: center;
  margin-bottom: 3rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

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

.copyright {
  text-align: center;
  color: rgba(255, 255, 255, 0.3);
  font-size: 0.85rem;
}

/* Page Content (For subpages) */
.page-header {
  padding: 10rem 0 5rem;
  text-align: center;
}

.page-content {
  max-width: 800px;
  margin: 0 auto;
  padding-bottom: 6rem;
}

.page-content h2 {
  font-family: var(--font-sans);
  font-weight: 600;
  text-align: left;
  margin-top: 3rem;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.page-content ul {
  list-style: none;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.page-content li {
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
  position: relative;
}

.page-content li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: rgba(255, 255, 255, 0.3);
}

/* Responsive Media Queries */
@media (max-width: 768px) {
  .hero {
    padding: 10rem 0 5rem;
  }
  
  h1 {
    font-size: clamp(2.5rem, 10vw, 3.5rem);
  }
  
  .hero p.subtitle {
    font-size: 1.15rem;
  }

  .btn {
    width: 100%;
  }
  
  .hero-cta {
    flex-direction: column;
    gap: 1rem;
  }

  .footer-links {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
  
  .glass-card {
    padding: 2rem;
  }
}