/* ==========================================================================
   SIGA CONSULTING - DARK EXECUTIVE HIGH-CONVERSION SYSTEM
   Typography: Work Sans (Clean, Modern, Corporate & Executive)
   ========================================================================== */

:root {
  --bg-primary: #040507;
  --bg-secondary: #080A0E;
  --bg-surface: #0D1016;
  --bg-card: #0F131A;
  --bg-card-hover: #151A24;
  --bg-card-border: #1E2532;
  
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --accent-white: #FFFFFF;
  --accent-silver: #E2E8F0;
  --accent-emerald: #10B981;
  --accent-emerald-dark: #064E3B;
  --accent-emerald-border: #047857;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.15);
  --border-focus: rgba(255, 255, 255, 0.4);
  --shadow-box: 0 12px 35px -10px rgba(0, 0, 0, 0.85);
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Work Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Work Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.55;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 100% 40%, rgba(148, 163, 184, 0.02) 0%, transparent 40%),
    radial-gradient(circle at 0% 80%, rgba(16, 185, 129, 0.02) 0%, transparent 40%);
  background-attachment: fixed;
}

/* Headings with Executive Work Sans Styling */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Work Sans', sans-serif;
  line-height: 1.25 !important;
  letter-spacing: -0.025em;
}

.font-serif-luxury, .font-serifLuxury {
  font-family: 'Work Sans', sans-serif;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.font-sans {
  font-family: 'Work Sans', sans-serif;
}

.text-chrome-gradient {
  background: linear-gradient(135deg, #FFFFFF 0%, #E2E8F0 50%, #94A3B8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.glass-card {
  background: rgba(15, 19, 26, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.glass-card:hover {
  background: rgba(21, 26, 36, 0.95);
  border-color: var(--border-focus);
  transform: translateY(-3px);
  box-shadow: var(--shadow-box);
}

.btn-primary-white {
  background: #FFFFFF;
  color: #040507;
  font-family: 'Work Sans', sans-serif;
  font-weight: 700;
  letter-spacing: 0.01em;
  padding: 0.85rem 1.8rem;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  transition: all 0.25s ease;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.15);
  border: 1px solid #FFFFFF;
  cursor: pointer;
}

.btn-primary-white:hover {
  background: #E2E8F0;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
}

.btn-secondary-dark {
  background: rgba(15, 19, 26, 0.9);
  color: #F8FAFC;
  font-family: 'Work Sans', sans-serif;
  font-weight: 600;
  padding: 0.85rem 1.8rem;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  transition: all 0.25s ease;
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
  cursor: pointer;
}

.btn-secondary-dark:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #FFFFFF;
  transform: translateY(-2px);
}

/* Range Slider */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  background: #1E2533;
  border-radius: 4px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #FFFFFF;
  cursor: pointer;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.6);
  border: 2px solid #040507;
  transition: transform 0.15s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

/* Details / Summary native FAQ */
details > summary::-webkit-details-marker {
  display: none;
}
details > summary {
  list-style: none;
}
details[open] summary .faq-chevron,
details[open] .faq-chevron {
  transform: rotate(180deg);
  color: #FFFFFF;
}

/* Modal */
.modal {
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

/* Subtle Scrollbar */
::-webkit-scrollbar {
  width: 7px;
}
::-webkit-scrollbar-track {
  background: #040507;
}
::-webkit-scrollbar-thumb {
  background: #1E2533;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #334155;
}