:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: #1a1f2e;
  --bg-input: #0f1419;
  --border-color: #2a3441;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --long: #10b981;
  --long-bg: rgba(16, 185, 129, 0.1);
  --short: #ef4444;
  --short-bg: rgba(239, 68, 68, 0.1);
  --warning: #f59e0b;
  --danger: #dc2626;
  --success: #059669;
  --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

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

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* Header */
.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.2rem;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.nav {
  display: flex;
  gap: 8px;
}

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s;
}

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

.nav-dropdown {
  position: relative;
}

.nav-dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  min-width: 260px;
  padding: 8px;
  box-shadow: var(--shadow-lg);
  margin-top: 4px;
}

.nav-dropdown:hover .nav-dropdown-content {
  display: block;
}

.nav-dropdown-content a {
  display: block;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
  white-space: nowrap;
}

.nav-dropdown-content a:hover {
  background: var(--bg-secondary);
}

.nav-dropdown-label {
  color: var(--text-secondary);
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero */
.hero {
  text-align: center;
  padding: 80px 24px 60px;
  max-width: 900px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero-cta {
  display: inline-flex;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

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

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-long {
  background: var(--long);
  color: white;
}

.btn-short {
  background: var(--short);
  color: white;
}

/* Tools Grid */
.tools-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.section-title {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  transition: all 0.3s;
  text-decoration: none;
  color: inherit;
  display: block;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
}

.tool-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.tool-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.tool-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.tool-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.tag-green { background: var(--long-bg); color: var(--long); }
.tag-red { background: var(--short-bg); color: var(--short); }
.tag-blue { background: rgba(59, 130, 246, 0.1); color: var(--accent); }
.tag-yellow { background: rgba(245, 158, 11, 0.1); color: var(--warning); }

/* Page Layout */
.page-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.page-header {
  margin-bottom: 40px;
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* Tool Layout */
.tool-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

@media (max-width: 900px) {
  .tool-layout {
    grid-template-columns: 1fr;
  }
}

/* Forms */
.form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
}

.form-card h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-main);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}

.position-toggle {
  display: flex;
  gap: 8px;
}

.position-toggle label {
  flex: 1;
  cursor: pointer;
}

.position-toggle input {
  display: none;
}

.position-toggle span {
  display: block;
  padding: 12px;
  text-align: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-input);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.position-toggle input:checked + span.long {
  background: var(--long-bg);
  border-color: var(--long);
  color: var(--long);
}

.position-toggle input:checked + span.short {
  background: var(--short-bg);
  border-color: var(--short);
  color: var(--short);
}

/* Output / Visualization */
.output-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  position: sticky;
  top: 80px;
}

.output-card h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Canvas Visualization */
.setup-canvas {
  width: 100%;
  height: 300px;
  background: var(--bg-primary);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.stat-item {
  background: var(--bg-primary);
  border-radius: var(--radius-sm);
  padding: 16px;
  border: 1px solid var(--border-color);
}

.stat-item.full-width {
  grid-column: 1 / -1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.stat-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-value.positive { color: var(--long); }
.stat-value.negative { color: var(--short); }

/* Card Generator */
.card-preview {
  background: var(--bg-primary);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border-color);
  margin-bottom: 20px;
}

.card-preview-inner {
  background: linear-gradient(135deg, #1a1f2e, #111827);
  border-radius: var(--radius-sm);
  padding: 24px;
  border: 1px solid var(--border-color);
}

.card-preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.card-preview-coin {
  font-size: 1.3rem;
  font-weight: 700;
}

.card-preview-side {
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
}

.card-preview-side.long { background: var(--long-bg); color: var(--long); }
.card-preview-side.short { background: var(--short-bg); color: var(--short); }

.card-preview-rows {
  display: grid;
  gap: 12px;
}

.card-preview-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-preview-row-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.card-preview-row-value {
  font-weight: 700;
  font-size: 0.95rem;
  font-family: 'Courier New', monospace;
}

/* Risk Assessment */
.risk-bar {
  height: 8px;
  background: var(--bg-primary);
  border-radius: 4px;
  overflow: hidden;
  margin: 8px 0 16px;
}

.risk-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.5s ease;
}

.risk-bar-fill.safe { background: var(--long); }
.risk-bar-fill.warning { background: var(--warning); }
.risk-bar-fill.danger { background: var(--short); }

.risk-assessment {
  padding: 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.risk-assessment.safe { background: var(--long-bg); color: var(--long); }
.risk-assessment.warning { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.risk-assessment.danger { background: var(--short-bg); color: var(--short); }

/* Disclaimer Banner */
.disclaimer-banner {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-bottom: 32px;
  font-size: 0.85rem;
  color: var(--warning);
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Journal Card */
.journal-card {
  background: var(--bg-primary);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  padding: 24px;
}

.journal-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.journal-card-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.journal-card-date {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.journal-card-pnl {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.journal-card-pnl.positive { color: var(--long); }
.journal-card-pnl.negative { color: var(--short); }

.journal-card-section {
  margin-bottom: 16px;
  padding: 16px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
}

.journal-card-section-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.journal-card-section-value {
  font-size: 0.95rem;
  color: var(--text-primary);
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 40px 24px;
  margin-top: 60px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 12px;
  color: var(--text-primary);
  text-decoration: none;
}

.footer-desc {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.6;
}

.footer-links h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.footer-links a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 6px 0;
  transition: color 0.2s;
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Content Pages */
.content-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.content-page h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.content-page h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--text-primary);
}

.content-page h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 24px 0 12px;
}

.content-page p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.content-page ul, .content-page ol {
  color: var(--text-secondary);
  margin-bottom: 16px;
  padding-left: 24px;
  line-height: 1.7;
}

.content-page li {
  margin-bottom: 8px;
}

.content-page a {
  color: var(--accent);
  text-decoration: none;
}

.content-page a:hover {
  text-decoration: underline;
}

/* Comparison Table */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

.compare-table th,
.compare-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.compare-table th {
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.compare-table td {
  color: var(--text-secondary);
}

.compare-table tr:hover td {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-success { border-left: 3px solid var(--long); }
.toast-error { border-left: 3px solid var(--short); }

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero-cta {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-cta .btn {
    width: 100%;
  }
  
  .tools-grid {
    grid-template-columns: 1fr;
  }
  
  .nav {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .header-inner {
    padding: 0 16px;
  }
  
  .form-row,
  .form-row-3 {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.4s ease forwards;
}

/* Hidden */
.hidden {
  display: none !important;
}