/* ============================================
   EcoSunFire - Global Styles
   ============================================ */

/* CSS Variables - Design System */
:root {
  /* Colors */
  --color-bg-dark: #1a1a1a;
  --color-bg-darker: #0f0f0f;
  --color-bg-card: #242424;
  --color-text-primary: #f5f5f5;
  --color-text-secondary: #b8b8b8;
  --color-accent: #ff6b35;
  --color-accent-hover: #ff8555;
  --color-warm: #ffb088;
  --color-border: #333;
  --color-success: #4caf50;
  --color-error: #f44336;

  /* Typography */
  --font-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 6rem;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Transitions */
  --transition-base: all 0.3s ease;
  --transition-fast: all 0.15s ease;

  /* Container */
  --container-max: 1200px;
  --container-padding: 1.5rem;

  /* Header */
  --header-height: 70px;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  background: var(--color-bg-dark);
  background: linear-gradient(135deg, var(--color-bg-darker) 0%, var(--color-bg-dark) 50%, #2a1a15 100%);
  background-attachment: fixed;
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

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

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

/* ============================================
   Layout Components
   ============================================ */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--spacing-2xl) 0;
}

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

/* ============================================
   Header & Navigation
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  transition: var(--transition-fast);
}

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

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

.nav {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-link {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-fast);
  padding: 0.5rem 0;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(26, 26, 26, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: var(--spacing-lg) var(--container-padding);
    gap: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-base);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    width: 100%;
    padding: var(--spacing-sm) 0;
    font-size: 1.1rem;
  }
}

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

.hero {
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-block;
  background: rgba(255, 107, 53, 0.1);
  color: var(--color-accent);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  border: 1px solid rgba(255, 107, 53, 0.3);
}

.hero h1 {
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-warm) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-xl);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: var(--transition-base);
  text-align: center;
  font-family: var(--font-base);
}

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

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
}

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

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

/* ============================================
   Trust Indicators
   ============================================ */

.trust-indicators {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
}

.trust-icon {
  font-size: 1.5rem;
  color: var(--color-accent);
}

.trust-text {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* ============================================
   Cards
   ============================================ */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.card h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ============================================
   Forms
   ============================================ */

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--color-text-primary);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-base);
  font-size: 1rem;
  transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

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

.form-submit {
  width: 100%;
}

.form-success {
  background: rgba(76, 175, 80, 0.1);
  border: 1px solid var(--color-success);
  color: var(--color-success);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
}

/* ============================================
   Newsletter Form
   ============================================ */

.newsletter-form {
  max-width: 500px;
  margin: 0 auto;
  background: var(--color-bg-card);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.newsletter-form .form-input {
  margin-bottom: var(--spacing-sm);
}

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

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

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

.faq-question {
  width: 100%;
  padding: var(--spacing-md);
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition-fast);
}

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

.faq-icon {
  font-size: 1.2rem;
  transition: var(--transition-base);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

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

.faq-answer-content {
  padding: 0 var(--spacing-md) var(--spacing-md);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

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

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

.site-footer {
  background: var(--color-bg-darker);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1rem;
}

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

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

/* ============================================
   Cookie Banner
   ============================================ */

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(26, 26, 26, 0.98);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-md);
  z-index: 2000;
  transform: translateY(100%);
  transition: var(--transition-base);
}

.cookie-banner.show {
  transform: translateY(0);
}

.cookie-content {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.cookie-text {
  flex: 1;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.cookie-text a {
  color: var(--color-accent);
  text-decoration: underline;
}

.cookie-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.cookie-actions .btn {
  padding: 0.75rem 1.5rem;
  font-size: 0.9rem;
}

/* ============================================
   Modal
   ============================================ */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-base);
  padding: var(--spacing-md);
}

.modal-overlay.show {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: var(--transition-base);
}

.modal-overlay.show .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.modal-header h3 {
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

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

.modal-body {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================
   Legal Pages
   ============================================ */

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

.legal-content h2 {
  margin-top: var(--spacing-lg);
  color: var(--color-text-primary);
}

.legal-content h3 {
  margin-top: var(--spacing-md);
  color: var(--color-text-primary);
}

.legal-content p,
.legal-content ul {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.legal-content ul {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.legal-content li {
  margin-bottom: var(--spacing-xs);
}

/* ============================================
   404 Page
   ============================================ */

.error-page {
  text-align: center;
  padding: var(--spacing-2xl) 0;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.error-code {
  font-size: clamp(4rem, 15vw, 8rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-warm) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.error-message {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

/* ============================================
   Utility Classes
   ============================================ */

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

.text-accent {
  color: var(--color-accent);
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.hidden {
  display: none;
}

/* ============================================
   Responsive Adjustments
   ============================================ */

@media (max-width: 768px) {
  :root {
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
  }

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

  .btn {
    width: 100%;
  }

  .cookie-content {
    flex-direction: column;
    text-align: center;
  }

  .cookie-actions {
    width: 100%;
    flex-direction: column;
  }

  .cookie-actions .btn {
    width: 100%;
  }
}

/* ============================================
   Animations
   ============================================ */

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

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

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}