/* ============================================================
       SERVICE CATALOG STYLESHEET
       Golden Ratio Consulting
       ============================================================
       
       TABLE OF CONTENTS
       1. RESET & BASE STYLES
       2. BACKGROUND & DECORATION
       3. LAYOUT & CONTAINERS
       4. HEADER & BRANDING
       5. TYPOGRAPHY
       6. NAVIGATION TABS
       7. CATEGORY SECTIONS
       8. SERVICE GRID & CARDS
       9. SERVICE CARD COMPONENTS
       10. SLA TIERS GRID
       11. SLA CARD COMPONENTS
       12. BUTTONS
       13. FOOTER
       14. RESPONSIVE STYLES
       ============================================================ */

/* ===== 1. RESET & BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Libre Franklin', -apple-system, BlinkMacSystemFont, 'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background: linear-gradient(135deg, #0a0a2e 0%, #16213e 100%);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* ===== 2. BACKGROUND & DECORATION ===== */
/* Background decoration overlay */
body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('https://images.unsplash.com/photo-1519389950473-47ba0277781c?auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  z-index: 0;
  pointer-events: none;
}

/* ===== 3. LAYOUT & CONTAINERS ===== */
/* Main content container */
.content {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem;
}

/* ===== 4. HEADER & BRANDING ===== */
/* Header section */
.header {
  text-align: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
}

/* Logo styling */
.logo {
  margin-bottom: 2rem;
}

.logo img {
  max-width: 380px;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 4px 20px rgba(0, 0, 0, 0.3));
  transition: transform 0.3s ease;
}

.logo img:hover {
  transform: scale(1.02);
}

/* Golden ratio symbol */
.golden-phi {
  font-size: 2.5rem;
  line-height: 1;
  color: #DAA520;
  margin-bottom: 0.5rem;
  font-family: 'Times New Roman', serif;
  text-shadow: 0 2px 10px rgba(218, 165, 32, 0.3);
}

/* ===== 5. TYPOGRAPHY ===== */
h1 {
  color: white;
  font-size: 2.5rem;
  font-weight: 600;
  font-family: 'Montserrat', sans-serif;
  margin-bottom: 0.5rem;
}

h1 span {
  color: #DAA520;
}

.subhead {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-top: 0.5rem;
}

/* ===== 6. NAVIGATION TABS ===== */
.nav-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  border-radius: 60px;
  padding: 0.5rem;
  border: 1px solid rgba(218, 165, 32, 0.2);
}

.nav-tab {
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.nav-tab:hover {
  background: rgba(218, 165, 32, 0.2);
  color: #DAA520;
}

.nav-tab.active {
  background: linear-gradient(135deg, #DAA520, #B8860B);
  color: white;
}

/* ===== 7. CATEGORY SECTIONS ===== */
.category-section {
  margin-bottom: 3rem;
}

.category-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #DAA520;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid rgba(218, 165, 32, 0.3);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ===== 8. SERVICE GRID & CARDS ===== */
/* Service Grid */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1.5rem;
}

/* Service Card */
.service-card {
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 1.5rem;
  border: 1px solid rgba(218, 165, 32, 0.2);
  transition: all 0.3s ease;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: rgba(218, 165, 32, 0.5);
}

/* ===== 9. SERVICE CARD COMPONENTS ===== */
.service-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.service-icon {
  font-size: 2rem;
}

.service-badge {
  font-size: 0.7rem;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  background: rgba(218, 165, 32, 0.2);
  color: #DAA520;
}

.service-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.5rem;
}

.service-description {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.service-features {
  list-style: none;
  margin-bottom: 1rem;
}

.service-features li {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
  padding: 0.25rem 0;
  padding-left: 1.25rem;
  position: relative;
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #DAA520;
}

.service-price {
  font-size: 1.3rem;
  font-weight: 700;
  color: #DAA520;
  margin-bottom: 0.25rem;
}

.service-price-period {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.5);
}

.service-footer {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ===== 10. SLA TIERS GRID ===== */
.sla-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 1rem 0;
}

.sla-card {
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 1.5rem;
  text-align: center;
  border: 2px solid rgba(218, 165, 32, 0.2);
  transition: all 0.3s ease;
}

.sla-card:hover {
  border-color: #DAA520;
  transform: translateY(-5px);
}

/* ===== 11. SLA CARD COMPONENTS ===== */
.sla-tier {
  font-size: 0.8rem;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  display: inline-block;
  margin-bottom: 1rem;
}

.sla-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.5rem;
}

.sla-price {
  font-size: 1.8rem;
  font-weight: 700;
  color: #DAA520;
  margin: 1rem 0;
}

.sla-price span {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
}

.sla-features {
  list-style: none;
  text-align: left;
  margin: 1rem 0;
}

.sla-features li {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
  padding: 0.25rem 0;
  padding-left: 1.25rem;
  position: relative;
}

.sla-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #DAA520;
}

/* ===== 12. BUTTONS ===== */
.btn-sm {
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  background: linear-gradient(135deg, #DAA520, #B8860B);
  color: white;
  transition: all 0.3s ease;
  display: inline-block;
}

.btn-sm:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(218, 165, 32, 0.3);
}

/* ===== 13. FOOTER ===== */
.footer-note {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.3);
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===== 14. RESPONSIVE STYLES ===== */
@media only screen and (max-width: 768px) {
  .content {
    padding: 1.5rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  .logo img {
    max-width: 200px;
  }
  
  .sla-grid {
    grid-template-columns: 1fr;
  }
  
  .service-grid {
    grid-template-columns: 1fr;
  }
  
  .nav-tabs {
    flex-wrap: wrap;
    border-radius: 20px;
  }
  
  .nav-tab {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
  }
}

@media only screen and (max-width: 480px) {
  h1 {
    font-size: 1.6rem;
  }
  
  .golden-phi {
    font-size: 2rem;
  }
  
  .category-title {
    font-size: 1.2rem;
  }
}