/* ==========================================================================
   ENINTI INFRASTRUCTURE & ENERGY SpA
   CORPORATE INDUSTRIAL DESIGN SYSTEM - HIGH-CONTRAST LIGHT & EXECUTIVE SLATE
   Typography: Inter (Formal Swiss Executive) & Plus Jakarta Sans
   Geometry: 100% Squared Architectural (Rigid 90° Angles)
   Standards: ISO 9001 / SEC RIC Engineering Grade
   ========================================================================== */

:root {
  /* Palette: Crisp Architectural Light & Deep Industrial Slate */
  --bg-page: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-card-alt: #F1F5F9;
  --bg-subtle: #E2E8F0;
  
  --steel-dark: #0B0F19;
  --steel-slate: #1E293B;
  --steel-charcoal: #334155;
  --steel-border: #CBD5E1;
  --steel-hairline: #E2E8F0;
  
  --amber-primary: #D97706;
  --amber-signal: #F59E0B;
  --amber-light: #FEF3C7;
  
  --status-green: #059669;
  --status-green-light: #ECFDF5;
  --status-blue: #0284C7;
  --status-blue-light: #F0F9FF;
  
  /* Text: Maximum Executive Readability & High Contrast */
  --text-primary: #0F172A;      /* Deep Slate Near-Black for supreme legibility */
  --text-secondary: #334155;    /* Clear readable charcoal */
  --text-muted: #64748B;        /* High-contrast slate */
  --text-inverse: #FFFFFF;
}

/* Strict 90° Square Geometry Resets */
*, *::before, *::after {
  border-radius: 0 !important;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-page);
  font-size: 15px;
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background-color: var(--bg-page);
  color: var(--text-primary);
  background-image: 
    linear-gradient(rgba(15, 23, 42, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: center top;
}

/* Headings: Formal, Authoritative, Clear */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  color: var(--steel-dark);
  letter-spacing: -0.025em;
  font-weight: 800;
  line-height: 1.2;
}

/* Technical & Telemetry Font */
.font-mono-tech {
  font-family: 'JetBrains Mono', 'IBM Plex Mono', monospace;
  font-feature-settings: 'tnum' 1, 'zero' 1;
}

/* Single Unified Executive Header */
.unified-corp-header {
  background-color: #0B0F19;
  border-bottom: 2px solid #1E293B;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  position: sticky;
  top: 0;
  z-index: 50;
  transition: all 0.2s ease;
}

/* Architectural Blueprint Panel (Bright, Crisp, High-Contrast) */
.blueprint-card {
  background-color: var(--bg-card);
  border: 1px solid var(--steel-border);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
  position: relative;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.blueprint-card:hover {
  border-color: var(--steel-charcoal);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
}

.blueprint-card::before,
.blueprint-card::after {
  content: '+';
  position: absolute;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--steel-charcoal);
  opacity: 0.6;
  pointer-events: none;
}
.blueprint-card::before {
  top: -7px;
  left: -5px;
}
.blueprint-card::after {
  bottom: -7px;
  right: -5px;
}

/* Formal Corporate Buttons */
.btn-corp-primary {
  background-color: var(--amber-signal);
  color: #0B0F19;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 12px 24px;
  border: 1px solid var(--amber-signal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-corp-primary:hover {
  background-color: #FFFFFF;
  border-color: #FFFFFF;
  color: #0B0F19;
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
}

.btn-corp-amber {
  background-color: var(--amber-primary);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 12px 24px;
  border: 1px solid var(--amber-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-corp-amber:hover {
  background-color: var(--steel-dark);
  border-color: var(--steel-dark);
  color: #FFFFFF;
}

.btn-corp-outline {
  background-color: #FFFFFF;
  color: var(--steel-dark);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 12px 24px;
  border: 1px solid var(--steel-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-corp-outline:hover {
  border-color: var(--steel-dark);
  background-color: var(--bg-card-alt);
}

/* Formal Executive Badges */
.badge-corp {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 3px 8px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 1px solid;
}

.badge-corp-amber {
  background-color: var(--amber-light);
  border-color: #FCD34D;
  color: #92400E;
}

.badge-corp-green {
  background-color: var(--status-green-light);
  border-color: #A7F3D0;
  color: var(--status-green);
}

.badge-corp-slate {
  background-color: var(--bg-card-alt);
  border-color: var(--steel-border);
  color: var(--steel-charcoal);
}

/* Formal Data Tables with Extreme Readability */
.corp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.corp-table th {
  background-color: var(--bg-card-alt);
  color: var(--steel-dark);
  text-align: left;
  padding: 10px 14px;
  border: 1px solid var(--steel-border);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.04em;
}

.corp-table td {
  padding: 10px 14px;
  border: 1px solid var(--steel-border);
  color: var(--text-secondary);
}

.corp-table tr:nth-child(even) td {
  background-color: #F8FAFC;
}

/* Range Slider - Crisp Industrial Daylight Style */
input[type="range"].corp-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  background: #E2E8F0;
  border: 1px solid #CBD5E1;
  outline: none;
}

input[type="range"].corp-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 28px;
  background: var(--steel-dark);
  border: 2px solid var(--amber-signal);
  cursor: ew-resize;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.25);
  transition: background 0.15s;
}

input[type="range"].corp-slider::-webkit-slider-thumb:hover {
  background: var(--amber-primary);
}

input[type="range"].corp-slider::-moz-range-thumb {
  width: 22px;
  height: 28px;
  background: var(--steel-dark);
  border: 2px solid var(--amber-signal);
  cursor: ew-resize;
}

/* Hazard safety stripe accent */
.hazard-accent-corp {
  background: repeating-linear-gradient(
    -45deg,
    #D97706,
    #D97706 8px,
    #0B0F19 8px,
    #0B0F19 16px
  );
  height: 3px;
  width: 100%;
}

/* Custom Executive Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #F1F5F9;
}

::-webkit-scrollbar-thumb {
  background: #94A3B8;
  border: 1px solid #F1F5F9;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--steel-dark);
}