/* ImpactRelay Marketing Site Styles */
/* Using brand colors from the app */

:root {
  /* Primary Colors (Sky Blue) */
  --primary-50: #f0f9ff;
  --primary-100: #e0f2fe;
  --primary-200: #bae6fd;
  --primary-300: #7dd3fc;
  --primary-400: #38bdf8;
  --primary-500: #0ea5e9;
  --primary-600: #0284c7;
  --primary-700: #0369a1;
  --primary-800: #075985;
  --primary-900: #0c4a6e;

  /* Gray Colors */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Accent Colors */
  --green-500: #22c55e;
  --green-600: #16a34a;
  --red-500: #ef4444;
  --red-600: #dc2626;
  --amber-500: #f59e0b;
  --purple-50: #faf5ff;
  --purple-100: #f3e8ff;
  --purple-500: #a855f7;
  --purple-600: #9333ea;
  --indigo-50: #eef2ff;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--gray-700);
  background-color: white;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--gray-900);
  line-height: 1.3;
  font-weight: 600;
}

.section-title {
  font-size: 2rem;
  text-align: center;
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--gray-500);
  text-align: center;
  margin-bottom: var(--space-12);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-5);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary-600);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-700);
}

.btn-secondary {
  background-color: white;
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
  background-color: var(--gray-50);
  border-color: var(--gray-400);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

.btn-google {
  background-color: white;
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
  gap: var(--space-2);
}

.btn-google:hover {
  background-color: var(--gray-50);
  border-color: var(--gray-400);
}

.google-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: white;
  border-bottom: 1px solid var(--gray-200);
  z-index: 1000;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
}

.nav-logo-icon {
  width: 28px;
  height: 28px;
  color: var(--primary-600);
}

.nav-links {
  display: none;
  gap: var(--space-8);
}

.nav-link {
  font-size: 0.9375rem;
  color: var(--gray-600);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--gray-900);
}

.nav-actions {
  display: none;
  align-items: center;
  gap: var(--space-3);
}

.nav-actions > .btn {
  white-space: nowrap;
}

.nav-mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--gray-600);
}

.nav-mobile-toggle svg {
  width: 24px;
  height: 24px;
}

.nav-mobile-menu {
  display: none;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  background: white;
  border-top: 1px solid var(--gray-100);
}

.nav-mobile-menu.active {
  display: flex;
}

.nav-mobile-link {
  padding: var(--space-3) 0;
  font-size: 1rem;
  color: var(--gray-700);
}

.nav-mobile-menu .btn {
  margin-top: var(--space-2);
}

.nav-mobile-menu .btn:first-of-type {
  margin-top: var(--space-4);
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }

  .nav-actions {
    display: flex;
  }

  .nav-mobile-toggle {
    display: none;
  }

  .nav-mobile-menu {
    display: none !important;
  }
}

/* Hero Section */
.hero {
  padding: calc(64px + var(--space-16)) 0 var(--space-20);
  background: linear-gradient(to bottom, var(--primary-50), white);
}

.hero .container {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

.hero-content {
  text-align: center;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--space-6);
  color: var(--gray-900);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--gray-600);
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  justify-content: center;
}

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

.hero-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
}

.hero-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
}

.hero-card-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-full);
}

.badge-alert {
  background-color: var(--amber-500);
  color: white;
}

.hero-card-time {
  font-size: 0.8125rem;
  color: var(--gray-400);
}

.hero-card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--gray-900);
}

.hero-card-desc {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: var(--space-4);
}

.hero-card-tickers {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.ticker {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  font-size: 0.8125rem;
  font-weight: 600;
  font-family: var(--font-mono);
  border-radius: var(--radius-md);
}

.ticker-down {
  background-color: #fef2f2;
  color: var(--red-600);
}

.ticker-up {
  background-color: #f0fdf4;
  color: var(--green-600);
}

.hero-card-confidence {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.confidence-label {
  font-size: 0.75rem;
  color: var(--gray-500);
  white-space: nowrap;
}

.confidence-bar {
  flex: 1;
  height: 6px;
  background-color: var(--gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.confidence-fill {
  height: 100%;
  background: linear-gradient(to right, var(--primary-500), var(--primary-600));
  border-radius: var(--radius-full);
}

.confidence-value {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary-600);
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 3rem;
  }

  .hero-actions {
    flex-direction: row;
  }
}

@media (min-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }

  .hero-content {
    text-align: left;
  }

  .hero-subtitle {
    margin-left: 0;
    margin-right: 0;
  }

  .hero-actions {
    justify-content: flex-start;
  }

  .hero-title {
    font-size: 3.5rem;
  }
}

/* Problem Section */
.problem {
  padding: var(--space-20) 0;
  background-color: white;
}

.problem-grid {
  display: grid;
  gap: var(--space-8);
}

.problem-card {
  text-align: center;
  padding: var(--space-6);
}

.problem-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-4);
  color: var(--gray-400);
}

.problem-icon svg {
  width: 100%;
  height: 100%;
}

.problem-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-2);
}

.problem-card p {
  font-size: 0.9375rem;
  color: var(--gray-500);
}

@media (min-width: 768px) {
  .problem-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* How It Works Section */
.how-it-works {
  padding: var(--space-20) 0;
  background: linear-gradient(to bottom, var(--gray-50), white);
}

.steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  max-width: 700px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
}

.step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
  color: white;
  font-size: 1.25rem;
  font-weight: 700;
  border-radius: var(--radius-full);
}

.step-content h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-2);
}

.step-content p {
  color: var(--gray-600);
}

/* Features Section */
.features {
  padding: var(--space-20) 0;
  background-color: white;
}

.features-grid {
  display: grid;
  gap: var(--space-8);
}

.feature-card {
  padding: var(--space-8);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.feature-card:hover {
  border-color: var(--primary-200);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-icon-ai {
  background: linear-gradient(135deg, var(--purple-50), var(--indigo-50));
  color: var(--purple-600);
}

.feature-icon-realtime {
  background-color: var(--primary-50);
  color: var(--primary-600);
}

.feature-icon-custom {
  background-color: var(--gray-100);
  color: var(--gray-600);
}

.feature-icon-community {
  background-color: #f0fdf4;
  color: var(--green-600);
}

.feature-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-2);
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--gray-500);
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Use Cases Section */
.use-cases {
  padding: var(--space-20) 0;
  background-color: var(--gray-50);
}

.use-cases-grid {
  display: grid;
  gap: var(--space-6);
}

.use-case-card {
  background: white;
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
}

.use-case-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary-600);
  margin-bottom: var(--space-3);
}

.use-case-card p {
  font-size: 1rem;
  color: var(--gray-700);
  font-style: italic;
  margin-bottom: var(--space-4);
}

.use-case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag {
  display: inline-flex;
  padding: var(--space-1) var(--space-2);
  font-size: 0.75rem;
  font-weight: 500;
  font-family: var(--font-mono);
  background-color: var(--gray-100);
  color: var(--gray-600);
  border-radius: var(--radius-md);
}

@media (min-width: 768px) {
  .use-cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .use-cases-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* CTA Section */
.cta {
  padding: var(--space-20) 0;
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  text-align: center;
}

.cta-title {
  font-size: 2rem;
  color: white;
  margin-bottom: var(--space-4);
}

.cta-subtitle {
  font-size: 1.125rem;
  color: var(--primary-100);
  margin-bottom: var(--space-8);
}

.cta .btn-primary {
  background-color: white;
  color: var(--primary-700);
}

.cta .btn-primary:hover {
  background-color: var(--primary-50);
}

@media (min-width: 768px) {
  .cta-title {
    font-size: 2.5rem;
  }
}

/* Footer */
.footer {
  padding: var(--space-12) 0 var(--space-8);
  background-color: var(--gray-900);
  color: var(--gray-400);
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--gray-800);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 1.25rem;
  font-weight: 600;
  color: white;
}

.footer-logo-icon {
  width: 28px;
  height: 28px;
  color: var(--primary-400);
}

.footer-tagline {
  margin-top: var(--space-2);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.footer-link {
  font-size: 0.9375rem;
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: var(--space-8);
  font-size: 0.875rem;
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}