/* ==========================================================================
   INFERNO 2026 — CORE STYLES & DESIGN TOKENS
   Aesthetic: Premium Minimalist White Editorial
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F7F7F5;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FAFAFA;
  --bg-elevated: #FFFFFF;
  --bg-subtle: #F3F3F0;
  --bg-dark: #111111;
  
  --text-primary: #111111;
  --text-secondary: #6B6B6B;
  --text-muted: #9E9E9E;
  --text-inverse: #FFFFFF;
  
  --border-light: #E8E8E8;
  --border-hover: #111111;
  --border-subtle: #F0F0F0;
  
  /* Restrained INFERNO Accent */
  --accent-fire: #E63920;
  --accent-fire-hover: #CC2F19;
  --accent-fire-light: rgba(230, 57, 32, 0.08);
  --accent-fire-border: rgba(230, 57, 32, 0.25);
  --accent-cyan: #0084FF;
  --accent-cyan-light: rgba(0, 132, 255, 0.08);
  
  /* Typography */
  --font-stack: "Inter", "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Consolas", "Liberation Mono", Menlo, Courier, monospace;
  
  /* Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-pill: 9999px;
  
  /* Shadows */
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.03);
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.08);
  --shadow-modal: 0 25px 60px rgba(0, 0, 0, 0.15);
  
  /* Layout */
  --max-width: 1340px;
  --header-height: 72px;
  --transition-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: cubic-bezier(0.2, 0, 0, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

body {
  font-family: var(--font-stack);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Selection */
::selection {
  background-color: #111111;
  color: #FFFFFF;
}

/* Links & Buttons Reset */
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  border: none;
  background: none;
  outline: none;
}

button {
  cursor: pointer;
  user-select: none;
}

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

/* Typography Hierarchy */
.hero-heading {
  font-size: clamp(3.8rem, 11vw, 9.5rem);
  font-weight: 800;
  line-height: 0.88;
  letter-spacing: -0.07em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.editorial-display {
  font-size: clamp(2.4rem, 6vw, 5.2rem);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.05em;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(2rem, 4.5vw, 3.6rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.section-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.section-eyebrow::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-fire);
}

.section-subtitle {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1.25rem;
  }
}

.section {
  padding: clamp(4.5rem, 8vw, 8.5rem) 0;
  position: relative;
}

.section-alt {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

/* Grids */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

@media (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* Common UI Elements */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid var(--border-light);
  background: var(--bg-primary);
}

.badge-online {
  background: var(--accent-cyan-light);
  color: var(--accent-cyan);
  border-color: rgba(0, 132, 255, 0.2);
}

.badge-offline {
  background: var(--accent-fire-light);
  color: var(--accent-fire);
  border-color: var(--accent-fire-border);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.95rem 1.9rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: transform 0.2s var(--transition-fast), background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background-color: var(--text-primary);
  color: var(--text-inverse);
  border: 1px solid var(--text-primary);
}

.btn-primary:hover {
  background-color: #000000;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.14);
}

.btn-secondary {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  border-color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
}

.btn-accent {
  background-color: var(--accent-fire);
  color: #FFFFFF;
  border: 1px solid var(--accent-fire);
}

.btn-accent:hover {
  background-color: var(--accent-fire-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230, 57, 32, 0.25);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-light);
  background: var(--bg-primary);
}

.btn-icon:hover {
  border-color: var(--text-primary);
  transform: scale(1.05);
}

.arrow-anim {
  transition: transform 0.25s var(--transition-smooth);
}

.btn:hover .arrow-anim {
  transform: translateX(4px);
}

/* Accessible focus rings */
:focus-visible {
  outline: 2px solid var(--accent-fire);
  outline-offset: 3px;
}

/* Reduced Motion Override */
@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;
  }
}