/* 
   premium.css – Ultra-Premium Light Mode Design System
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@300;400;600;800&family=Playfair+Display:ital,wght@0,400;1,400&display=swap');

:root {
  /* Ultra-clean light theme */
  --bg-base: #fafafa;
  --bg-surface: #ffffff;
  --bg-surface-hover: #f3f4f6;
  
  --text-primary: #111827;
  --text-secondary: #4b5563;
  
  --accent-purple: #000000;
  --accent-cyan: #1e40af;
  
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-glow: rgba(0, 0, 0, 0.15);
  
  --font-display: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-serif: 'Playfair Display', serif;
  
  --transition-smooth: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
  --shadow-soft: 0 10px 40px rgba(0,0,0,0.05);
  --shadow-hover: 0 20px 50px rgba(0,0,0,0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

/* Background Ambient Glow (Light mode version) */
.ambient-bg {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: -1;
  background: 
    radial-gradient(circle at 15% 50%, rgba(0, 0, 0, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 85% 30%, rgba(30, 64, 175, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

/* Grid Pattern Overlay */
.grid-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: -1;
  background-image: 
    linear-gradient(to right, rgba(0,0,0,0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0,0,0,0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 90%);
  -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 90%);
  pointer-events: none;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.text-gradient {
  background: linear-gradient(135deg, #111827 0%, #6b7280 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-accent-gradient {
  background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.display-1 {
  font-size: clamp(3rem, 8vw, 6rem);
}

.display-2 {
  font-size: clamp(2rem, 5vw, 4rem);
}

.lead-text {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--text-secondary);
  max-width: 65ch;
  margin: 1.5rem auto;
}

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

/* Container */
.container {
  width: min(92%, 1400px);
  margin: 0 auto;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0; width: 100%;
  z-index: 100;
  padding: 1.5rem 0;
  transition: var(--transition-smooth);
}

.navbar.scrolled {
  padding: 1rem 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 4px 20px rgba(0,0,0,0.03);
}

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

.brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  align-items: center;
}

.brand .with {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: 1rem;
  opacity: 0.6;
  margin: 0 0.3rem;
  transform: translateY(2px);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  border-radius: 100px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
  gap: 0.5rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  color: #fff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 4px 10px rgba(0,0,0,0.02);
}

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

/* Glass Panels */
.glass-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 24px;
  padding: 3rem;
  box-shadow: var(--shadow-soft);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.glass-panel:hover {
  border-color: rgba(0, 0, 0, 0.15);
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

/* Icons */
.icon-container {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 4px 15px rgba(0,0,0,0.04);
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
}

.icon-container.danger {
  color: #ef4444;
  background: #fef2f2;
  border-color: #fee2e2;
}

.icon-container.success {
  color: #10b981;
  background: #ecfdf5;
  border-color: #d1fae5;
}

.icon-container.purple {
  color: var(--accent-purple);
  background: #f5f3ff;
  border-color: #ede9fe;
}

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

.faq-item {
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.5rem 0;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, margin-top 0.4s ease;
  color: var(--text-secondary);
}

.faq-item.active .faq-answer {
  max-height: 200px;
  margin-top: 1rem;
}

.faq-item.active .faq-question .lucide {
  transform: rotate(180deg);
}

.faq-question .lucide {
  transition: transform 0.4s ease;
  color: var(--accent-purple);
}

/* Testimonial */
.testimonial-card {
  padding: 2.5rem;
  border-radius: 20px;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
  position: relative;
}

.testimonial-card .quote-icon {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  color: rgba(0,0,0,0.03);
  width: 60px;
  height: 60px;
}

/* Sections */
section {
  padding: 8rem 0;
  position: relative;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.hero-img {
  width: 100%;
  max-width: 500px;
  animation: float 6s ease-in-out infinite;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.1));
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
  100% { transform: translateY(0px); }
}

/* Animations */
.reveal-up {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal-up.active {
  opacity: 1;
  transform: translateY(0);
}

/* Footer */
footer {
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 0;
  margin-top: 4rem;
  background: #ffffff;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-content a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.footer-content a:hover {
  color: var(--accent-cyan);
}

/* Mobile */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-grid .hero-img {
    margin: 0 auto;
    max-width: 400px;
  }
  .nav-links {
    display: none;
  }
  .footer-content {
    flex-direction: column;
    gap: 1.5rem;
  }
}