/* Copper Signals Landing Page Styles */

:root {
  --primary: #0f172a;
  --primary-light: #1e293b;
  --accent: #3b82f6;
  --accent-dark: #2563eb;
  --text: #334155;
  --text-light: #64748b;
  --bg: #ffffff;
  --bg-light: #f8fafc;
  --border: #e2e8f0;
  --success: #10b981;
  --gradient-start: #0f172a;
  --gradient-end: #1e40af;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary);
  margin-bottom: 1rem;
}

h1 {
  font-size: 3.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.5rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.75rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-light);
  font-size: 1.125rem;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-dark);
}

/* Header/Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  padding: 1rem 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
}

.logo img {
  height: 40px;
  width: auto;
}

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

.nav-links a {
  color: var(--text);
  font-weight: 500;
  transition: color 0.2s;
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: 0.75rem;
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
  color: white;
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-large {
  padding: 1.125rem 2.5rem;
  font-size: 1.125rem;
}

/* Hero Section */
.hero {
  padding: 8rem 2rem 2rem;
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.4;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

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

.hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.375rem;
  margin-bottom: 2.5rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

.hero-cta .btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  color: white;
  backdrop-filter: blur(10px);
}

.hero-cta .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: white;
  color: white;
}

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

/* Section */
.section {
  padding: 5rem 2rem;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.25rem;
}

/* Demo Section */
.demo-section {
  background: var(--bg-light);
  padding: 5rem 2rem;
  text-align: center;
}

.demo-box {
  max-width: 600px;
  margin: 0 auto;
  padding: 2rem;
  background: white;
  border-radius: 1rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.demo-box h3 {
  margin-bottom: 1rem;
}

.demo-box p {
  margin-bottom: 1.5rem;
}

.demo-callout {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  color: white;
  border-radius: 2rem;
  font-weight: 600;
  margin-top: 1rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

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

.feature-card {
  padding: 2rem;
  background: white;
  border-radius: 1rem;
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  border-color: var(--accent);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  font-size: 1.375rem;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--text-light);
  font-size: 1rem;
  margin-bottom: 0;
}

/* How It Works */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 60px;
  height: 60px;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1.5rem;
}

.step h3 {
  margin-bottom: 0.75rem;
}

.step p {
  font-size: 1rem;
}

/* Benefits Section */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.benefit-card {
  padding: 2.5rem;
  background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
  border-radius: 1rem;
  border: 1px solid var(--border);
}

.benefit-card h3 {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.benefit-card ul {
  list-style: none;
  padding: 0;
}

.benefit-card li {
  padding: 0.75rem 0;
  padding-left: 1.75rem;
  position: relative;
  color: var(--text);
}

.benefit-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}

/* Pricing Section */
.pricing-teaser {
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  color: white;
  padding: 5rem 2rem;
  text-align: center;
}

.pricing-teaser h2 {
  color: white;
  margin-bottom: 1rem;
}

.pricing-teaser p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  margin-bottom: 2rem;
}

.pricing-highlight {
  display: inline-block;
  padding: 1rem 2rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 0.75rem;
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.pricing-highlight strong {
  font-size: 1.5rem;
  color: white;
}

/* Billing Toggle */
.billing-toggle {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 2rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  background: transparent;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 1rem;
}

.billing-toggle:hover {
  border-color: rgba(255, 255, 255, 0.6);
  color: white;
}

.billing-toggle.active {
  background: white;
  color: var(--primary);
  border-color: white;
}

/* Pricing Grid */
/* Billing Toggle */
.billing-toggle {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 20px;
  text-decoration: none;
  color: #64748b;
  font-weight: 500;
  transition: all 0.2s;
  border: 2px solid #e2e8f0;
  background: transparent;
  cursor: pointer;
  font-size: 1rem;
}

.billing-toggle:hover {
  color: #0f172a;
  border-color: #cbd5e1;
}

.billing-toggle.active {
  background: #0f172a;
  color: #fff;
  border-color: #0f172a;
}

.billing-toggle.active:hover {
  color: #fff;
}

.pricing-grid {
display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 0;
}

.pricing-card {
  background: white;
  border-radius: 8px;
  padding: 1.5rem;
  text-align: center;
  margin-bottom: 1rem;
  position: relative;
  border: 1px solid #e2e8f0;
  transition: transform 0.3s, box-shadow 0.3s;
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.pricing-card.popular {
  border: 2px solid #3b82f6;
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.2);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: #3b82f6;
  color: #fff;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: #3b82f6;
  color: #fff;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.pricing-card h3 {
  color: var(--primary);
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.price-display {
  text-align: center;
  margin-bottom: 2rem;
}

.price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.25rem;
}

.price .amount {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.price .period {
  font-size: 1.125rem;
  color: var(--text-light);
  font-weight: 500;
}

.billed-yearly {
  font-size: 0.875rem;
  color: var(--text-light);
  margin-top: 0.5rem;
}

.plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
  flex-grow: 1;
}

.plan-features li {
  padding: 0.75rem 0;
  padding-left: 1.75rem;
  position: relative;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
}

.plan-features li:last-child {
  border-bottom: none;
}

.plan-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
  font-size: 1.125rem;
}

/* CTA Section */
.cta-section {
  padding: 5rem 2rem;
  text-align: center;
  background: var(--bg-light);
}

.cta-section h2 {
  margin-bottom: 1rem;
}

.cta-section p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
}

/* Footer */
.footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.8);
  padding: 3rem 2rem 2rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-section h4 {
  color: white;
  margin-bottom: 1rem;
  font-size: 1.125rem;
}

.footer-section ul {
  list-style: none;
  padding: 0;
}

.footer-section li {
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.2s;
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 0.875rem;
}

.footer-bottom a {
  color: white;
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  .hero {
    padding: 6rem 1.5rem 4rem;
  }

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

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

  .section {
    padding: 3rem 1.5rem;
  }

  .features-grid,
  .benefits-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    gap: 1rem;
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0 1rem;
  }

  .logo {
    font-size: 1.25rem;
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
  }

  .btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  padding: 1rem;
  overflow-y: auto;
}

.modal-overlay.open {
  display: flex;
}

.modal-container {
  background: white;
  border-radius: 1rem;
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  margin: 0;
  font-size: 1.5rem;
  color: var(--primary);
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--text-light);
  transition: color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  color: var(--primary);
}

.modal-body {
  padding: 2rem;
  overflow-y: auto;
  flex: 1;
}

.modal-body h2 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.modal-body h2:first-child {
  margin-top: 0;
}

.modal-body h3 {
  font-size: 1.25rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.modal-body p {
  margin-bottom: 1rem;
  line-height: 1.6;
}

.modal-body ul {
  margin-bottom: 1rem;
  padding-left: 2rem;
}

.modal-body li {
  margin-bottom: 0.5rem;
}

.modal-footer {
  padding: 1.5rem 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

body.modal-open {
  overflow: hidden;
}

.footer-link {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  font-size: inherit;
  transition: color 0.2s;
}

.footer-link:hover {
  color: white;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--primary);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-actions {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  justify-content: flex-start;
}

.card {
  background: white;
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Alert Styles */
.alert {
  padding: 1rem 1.5rem;
  border-radius: 0.75rem;
  margin-bottom: 1.5rem;
  border-left: 4px solid;
}

.alert-success {
  background: #f0fdf4;
  border-color: var(--success);
  color: #166534;
}

.alert-error {
  background: #fef2f2;
  border-color: #dc2626;
  color: #991b1b;
}

.alert-info {
  background: #eff6ff;
  border-color: var(--accent);
  color: #1e40af;
}

/* About Page Styles */
.about-content {
  margin-bottom: 2rem;
}

.about-content p {
  margin-bottom: 1.5rem;
}

.about-content p:last-child {
  margin-bottom: 0;
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }