:root {
  --bg-color: #07070a;
  --surface-color: rgba(255, 255, 255, 0.03);
  --surface-border: rgba(255, 255, 255, 0.08);
  --primary: #8b5cf6;
  --primary-hover: #7c3aed;
  --secondary: #3b82f6;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --gradient-1: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  --glass-bg: rgba(15, 15, 20, 0.6);
  --glass-blur: 12px;
}

[data-theme="light"] {
  --bg-color: #ffffff;
  --surface-color: rgba(0, 0, 0, 0.03);
  --surface-border: rgba(0, 0, 0, 0.08);
  --text-main: #0f172a;
  --text-muted: #475569;
  --glass-bg: rgba(255, 255, 255, 0.7);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(139, 92, 246, 0.15), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(59, 130, 246, 0.15), transparent 25%);
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

/* Header & Nav */
header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--surface-border);
}

.logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

nav ul li a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
}

nav ul li a:hover, nav ul li a.active {
  color: var(--text-main);
}

.btn {
  padding: 0.75rem 1.5rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background: var(--gradient-1);
  color: white;
  border: none;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

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

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

.theme-toggle {
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  border-radius: 50%;
  transition: background-color 0.3s ease, color 0.3s ease;
  margin-right: 1rem;
}

.theme-toggle:hover {
  background-color: var(--surface-color);
}

/* Sections */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 8rem 5% 4rem;
  position: relative;
}

.hero-badge {
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  color: var(--primary);
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  display: inline-block;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 5.5rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  max-width: 900px;
}

.hero h1 span {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.app-preview {
  margin-top: 4rem;
  width: 100%;
  max-width: 1000px;
  height: 600px;
  background: var(--surface-color);
  border: 1px solid var(--surface-border);
  border-radius: 24px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.app-preview::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
}

.page-header {
  padding: 10rem 5% 4rem;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.page-header h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

.page-header p {
  font-size: 1.2rem;
  color: var(--text-muted);
}

/* Grids */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  padding: 2rem 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.bento-card {
  background: var(--surface-color);
  border: 1px solid var(--surface-border);
  border-radius: 24px;
  padding: 2.5rem;
  transition: transform 0.3s ease, border-color 0.3s ease;
  display: flex;
  flex-direction: column;
}

.bento-card:hover {
  transform: translateY(-5px);
  border-color: rgba(139, 92, 246, 0.3);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(139, 92, 246, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.bento-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.bento-card p {
  color: var(--text-muted);
}

.col-span-2 {
  grid-column: span 2;
}

@media (max-width: 768px) {
  .col-span-2 {
    grid-column: span 1;
  }
  .hero-actions {
    flex-direction: column;
  }
  nav ul {
    display: none; /* simple mobile hide for now */
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding: 2rem 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--surface-color);
  border: 1px solid var(--surface-border);
  border-radius: 24px;
  padding: 3rem 2rem;
  text-align: center;
  position: relative;
}

.pricing-card.popular {
  border-color: var(--primary);
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.1);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-1);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.price {
  font-size: 3.5rem;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
  margin: 1.5rem 0;
}

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

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

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

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

/* Footer */
footer {
  padding: 4rem 5% 2rem;
  border-top: 1px solid var(--surface-border);
  margin-top: 4rem;
  text-align: center;
  color: var(--text-muted);
}

/* Auth Pages */
.auth-container {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 6rem 5% 2rem;
}

.auth-box {
  background: var(--surface-color);
  border: 1px solid var(--surface-border);
  border-radius: 24px;
  padding: 3rem;
  width: 100%;
  max-width: 450px;
  backdrop-filter: blur(10px);
  text-align: center;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.3);
}

.auth-box h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.auth-box p {
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  text-align: left;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-group input {
  padding: 0.8rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--surface-border);
  background: rgba(0, 0, 0, 0.2);
  color: var(--text-main);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

[data-theme="light"] .form-group input {
  background: rgba(255, 255, 255, 0.5);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.auth-divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 1.5rem 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.auth-divider::before, .auth-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--surface-border);
}
.auth-divider::before { margin-right: 1em; }
.auth-divider::after { margin-left: 1em; }