/* ==========================================
   EnergizedSEO - Main Stylesheet
   ========================================== */

/* CSS Variables */
:root {
  /* Primary Colors */
  --color-primary: #2563EB;
  --color-primary-light: #3B82F6;
  --color-primary-dark: #1D4ED8;
  
  /* Background */
  --color-bg: #0F172A;
  --color-bg-light: #1E293B;
  --color-bg-card: #1E293B;
  
  /* Accent Colors */
  --color-accent: #F97316;
  --color-success: #10B981;
  
  /* Text Colors */
  --color-text: #F8FAFC;
  --color-text-muted: #94A3B8;
  --color-text-dark: #64748B;
  
  /* Borders */
  --border-color: rgba(255, 255, 255, 0.1);
  --border-radius: 8px;
  --border-radius-lg: 12px;
  
  /* Typography */
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Spacing */
  --container-max: 1200px;
  --section-padding: 80px;
  --section-padding-mobile: 48px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.3);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(2rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.5rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  color: white;
}

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

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

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

.btn-accent:hover {
  background: #EA580C;
  transform: translateY(-2px);
}

.btn-large {
  padding: 18px 36px;
  font-size: 1.125rem;
}

.btn-nav {
  padding: 10px 20px;
  font-size: 0.875rem;
  background: var(--color-primary);
  color: white;
}

/* ==========================================
   Header
   ========================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-text);
  text-decoration: none;
}

.logo:hover {
  color: var(--color-text);
}

.logo-icon {
  font-size: 1.75rem;
}

.logo-accent {
  color: var(--color-primary-light);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

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

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all 0.2s ease;
}

/* ==========================================
   Hero Section
   ========================================== */

.hero {
  padding-top: 160px;
  padding-bottom: var(--section-padding);
  background: 
    radial-gradient(ellipse at 50% 0%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(249, 115, 22, 0.08) 0%, transparent 40%),
    var(--color-bg);
  text-align: center;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.3);
  border-radius: 100px;
  font-size: 0.875rem;
  color: var(--color-primary-light);
  margin-bottom: 24px;
}

.hero h1 {
  margin-bottom: 24px;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 40px;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--border-color);
}

.stat {
  text-align: center;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary-light);
  display: block;
}

.stat-label {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* ==========================================
   Section Styles
   ========================================== */

.section {
  padding: var(--section-padding) 0;
}

.section-dark {
  background: var(--color-bg-light);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.125rem;
}

/* ==========================================
   How It Works
   ========================================== */

.how-it-works {
  background: var(--color-bg);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 48px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-primary), transparent);
  opacity: 0.3;
  z-index: 0;
}

.step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 72px;
  height: 72px;
  background: var(--color-bg-light);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-light);
  position: relative;
}

.step-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 2rem;
  position: relative;
}

.step h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.step p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* ==========================================
   Features
   ========================================== */

.features {
  background: var(--color-bg-light);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 32px;
  transition: all 0.3s ease;
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(37, 99, 235, 0.05));
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin: 0;
}

/* ==========================================
   Pricing
   ========================================== */

.pricing {
  background: var(--color-bg);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: var(--color-bg-light);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 40px 32px;
  position: relative;
  transition: all 0.3s ease;
}

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

.pricing-card.featured {
  border-color: var(--color-primary);
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.1) 0%, var(--color-bg-light) 100%);
  transform: scale(1.05);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: white;
  padding: 4px 16px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pricing-header {
  text-align: center;
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-color);
}

.pricing-tier {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.pricing-price {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-text);
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.pricing-description {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 8px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.pricing-features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-cta {
  width: 100%;
}

/* ==========================================
   FAQ
   ========================================== */

.faq {
  background: var(--color-bg-light);
}

.faq-grid {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  margin-bottom: 16px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 24px;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  transition: color 0.2s ease;
}

.faq-question:hover {
  color: var(--color-primary-light);
}

.faq-icon {
  font-size: 1.5rem;
  color: var(--color-primary);
  transition: transform 0.2s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-content {
  padding: 0 24px 24px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

/* ==========================================
   CTA Section
   ========================================== */

.cta-section {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  color: white;
  margin-bottom: 16px;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto 32px;
}

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

.cta-section .btn:hover {
  background: var(--color-text);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* ==========================================
   Footer
   ========================================== */

.site-footer {
  background: var(--color-bg);
  padding: 80px 0 32px;
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-tagline {
  color: var(--color-text-muted);
  margin: 0;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--color-text);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

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

.footer-contact p {
  margin-bottom: 8px;
}

.footer-contact a {
  color: var(--color-text-muted);
}

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.social-links a {
  width: 40px;
  height: 40px;
  background: var(--color-bg-light);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.social-links a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-light);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  color: var(--color-text-muted);
}

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

/* ==========================================
   Responsive Styles
   ========================================== */

@media (max-width: 1024px) {
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
  }
  
  .steps-grid::before {
    display: none;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }
  
  .pricing-card.featured {
    transform: none;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 60px;
  }
  
  .mobile-menu-toggle {
    display: flex;
    z-index: 1001;
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg-light);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 24px;
    padding: 80px 24px;
    transition: right 0.3s ease;
    border-left: 1px solid var(--border-color);
  }
  
  .nav-links.active {
    right: 0;
  }
  
  .mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
  
  .hero {
    padding-top: 120px;
    min-height: auto;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }
  
  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-ctas .btn {
    width: 100%;
    max-width: 280px;
  }
  
  .steps-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .section-header h2 {
    font-size: 1.75rem;
  }
  
  .pricing-price {
    font-size: 2.5rem;
  }
}