/* Global Variables */
:root {
  --primary-color: #00d4ff;
  --secondary-color: #0099cc;
  --dark-bg: #0a0e27;
  --darker-bg: #050816;
  --card-bg: #151b3d;
  --text-primary: #ffffff;
  --text-secondary: #a0aec0;
  --success-color: #10b981;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  --border-color: #1e2749;
}

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

body {
  font-family: "Inter", "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* Navigation */
.navbar {
  background: var(--darker-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
  letter-spacing: -1px;
}

.nav-menu {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

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

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-primary);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.btn-secondary {
  background: var(--card-bg);
  color: var(--text-primary);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-secondary:hover {
  border-color: var(--primary-color);
  background: var(--darker-bg);
}

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 6rem 2rem;
  background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--text-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
}

.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Badge */
.badge {
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  display: inline-block;
}

.badge-success {
  background: rgba(16, 185, 129, 0.2);
  color: var(--success-color);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger-color);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.2);
  color: var(--warning-color);
}

.badge-info {
  background: rgba(0, 212, 255, 0.2);
  color: var(--primary-color);
}

/* Table */
.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.table th {
  background: var(--darker-bg);
  padding: 1rem;
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--border-color);
}

.table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.table tr:hover {
  background: rgba(0, 212, 255, 0.05);
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--darker-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color 0.3s;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

/* Price display */
.price-display {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin: 1rem 0;
}

.price-change {
  font-size: 1.25rem;
  font-weight: 600;
}

.price-change.positive {
  color: var(--success-color);
}

.price-change.negative {
  color: var(--danger-color);
}

/* Signal Card */
.signal-card {
  background: var(--card-bg);
  border-left: 4px solid var(--primary-color);
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.signal-card.buy {
  border-left-color: var(--success-color);
}

.signal-card.sell {
  border-left-color: var(--danger-color);
}

.signal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.signal-market {
  font-size: 1.5rem;
  font-weight: 700;
}

.confidence-score {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-color);
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.stat-card {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 12px;
  text-align: center;
  border: 1px solid var(--border-color);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

/* Chart container */
.chart-container {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  min-height: 400px;
  position: relative;
}

/* Footer */
.footer {
  background: var(--darker-bg);
  border-top: 1px solid var(--border-color);
  padding: 3rem 2rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.footer-section h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.footer-section a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 0.5rem;
  transition: color 0.3s;
}

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

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-menu {
    gap: 1rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.125rem;
  }

  .container {
    padding: 1rem;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* Loading animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(0, 212, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Alert */
.alert {
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.alert-success {
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid var(--success-color);
  color: var(--success-color);
}

.alert-danger {
  background: rgba(239, 68, 68, 0.2);
  border: 1px solid var(--danger-color);
  color: var(--danger-color);
}

.alert-info {
  background: rgba(0, 212, 255, 0.2);
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
}