@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg-absolute: #000000;
  --bg-panel: #0a0a0a;
  --bg-card: #0d0d0d;
  
  --text-primary: #ffffff;
  --text-secondary: #888888;
  --text-muted: #666666;
  
  --border-light: #1c1c1c;
  --border-medium: #2c2c2c;
  
  --accent-blue: #0070f3;
  --accent-error: #ff3333;
  --accent-success: #00e676;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --transition-fast: 0.15s ease;
}

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

body {
  background-color: var(--bg-absolute);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Header & Navigation */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border-light);
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-dot {
  width: 8px;
  height: 8px;
  background-color: var(--text-primary);
  border-radius: 50%;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition-fast);
  text-decoration: none;
}

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

/* Container */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

h1 {
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2.2rem;
  line-height: 1.2;
}

h3 {
  font-size: 1.3rem;
  font-weight: 600;
}

p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  font-weight: 400;
  margin-bottom: 1.5rem;
}

/* Cards & Layout */
.card {
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 2.5rem;
  transition: var(--transition-fast);
}

.card:hover {
  border-color: var(--border-medium);
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.features-grid .card {
  padding: 2rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
  border: none;
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--text-primary);
  color: var(--bg-absolute);
}

.btn-primary:hover {
  background-color: #e5e5e5;
}

.btn-secondary {
  background-color: #161616;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  background-color: #222222;
  border-color: var(--border-medium);
}

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

.btn-outline:hover {
  color: var(--text-primary);
  border-color: var(--text-primary);
}

.btn-lg {
  padding: 0.8rem 1.8rem;
  font-size: 0.95rem;
}

/* Hero Section */
.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  padding: 4rem 0;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-box {
  width: 280px;
  height: 280px;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.form-control {
  background: var(--bg-absolute);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 0.65rem 0.85rem;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--text-primary);
}

/* Auth Wrapper */
.auth-wrapper {
  max-width: 400px;
  margin: 4rem auto;
}

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-header h2 {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

.auth-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.price-tag {
  font-size: 2.2rem;
  font-weight: 700;
  margin: 1.2rem 0;
  display: flex;
  align-items: baseline;
  letter-spacing: -0.03em;
}

.price-tag span {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 400;
  margin-left: 0.25rem;
}

.feature-list {
  list-style: none;
  margin: 1.5rem 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.95rem;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
}

.feature-list li::before {
  content: '→';
  color: var(--text-primary);
  font-weight: 600;
}

/* Dashboard Layout */
.dashboard-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 2rem;
}

.user-badge {
  text-align: center;
  margin-bottom: 1.5rem;
}

.avatar-placeholder {
  width: 72px;
  height: 72px;
  background-color: var(--text-primary);
  color: var(--bg-absolute);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 600;
  margin: 0 auto 1rem;
}

.stats-card {
  background: var(--bg-absolute);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 1.2rem;
  margin-top: 1.5rem;
}

.progress-bar-container {
  width: 100%;
  height: 6px;
  background: #161616;
  border-radius: 3px;
  margin-top: 0.8rem;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--text-primary);
  width: 0%;
  transition: width 0.3s ease;
}

/* Alerts */
.alert {
  padding: 0.8rem 1rem;
  border-radius: 6px;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  display: none;
}

.alert-error {
  background: rgba(255, 51, 51, 0.1);
  border: 1px solid var(--accent-error);
  color: #ff8888;
}

.alert-success {
  background: rgba(0, 230, 118, 0.1);
  border: 1px solid var(--accent-success);
  color: #88ffa8;
}

/* Responsive */
@media (max-width: 850px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}