/* assets/css/style.css */
:root {
  --bg-color: #0a0a0f;
  --bg-surface: #13141c;
  --bg-surface-hover: #1a1b26;
  --text-main: #ffffff;
  --text-muted: #8b92a5;
  --primary: #6366f1; /* Indigo */
  --primary-hover: #4f46e5;
  --accent: #0ea5e9; /* Cyan */
  --border-color: #272838;
  --danger: #ef4444;
  --success: #10b981;
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --transition: all 0.3s ease;
}

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

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

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

/* Typography */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: 3rem; margin-bottom: 1rem; }
h2 { font-size: 2.25rem; margin-bottom: 1rem; }

/* Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.text-gradient {
  background: linear-gradient(to right, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-family: inherit;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.39);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.1);
}

/* Header */
header {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-color);
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: white;
}

.logo span {
  color: var(--primary);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
}

.nav-links a:hover {
  color: white;
}

/* Hero Section */
.hero {
  padding: 8rem 0 6rem;
  text-align: center;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99,102,241,0.15) 0%, rgba(10,10,15,0) 70%);
  z-index: -1;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 3rem;
}

/* Features Section */
.features {
  padding: 5rem 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: rgba(20, 20, 25, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 2.5rem;
  border-radius: 1.25rem;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  background: rgba(30, 30, 40, 0.8);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.feature-icon {
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--text-main);
}

.feature-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Pricing Section */
.pricing {
  padding: 5rem 0;
  text-align: center;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
  text-align: left;
}

.pricing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  border-radius: 1rem;
  position: relative;
}

.pricing-card.popular {
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.15);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: bold;
}

.price {
  font-size: 3rem;
  font-weight: 800;
  margin: 1.5rem 0;
}

.price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

.features-list {
  list-style: none;
  margin: 2rem 0;
}

.features-list li {
  margin-bottom: 1rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.features-list li::before {
  content: '✓';
  color: var(--success);
  font-weight: bold;
}

/* Footer */
footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
  margin-top: 5rem;
  text-align: center;
  color: var(--text-muted);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn 0.8s ease forwards;
}

/* Responsive */
@media (max-width: 768px) {
  h1 { font-size: 2.5rem; }
  .nav-links { display: none; } /* Mobile menu needed for real app */
}