/* ==========================================================================
   MERITUS INFRASTRUCTURE 7 - CORE THEME & COLOR PALETTE
   Extracted from logo.pdf:
   - Primary Architectural Slate Navy: #2A303F
   - Brand Radiant Construction Gold: #F2D02A
   - Dark Rich Base: #161A24 / #1E2330
   - Accent Slate: #8E9BAE
   ========================================================================== */

:root {
  /* Brand Palette from logo.pdf */
  --meritus-gold: #F2D02A;
  --meritus-gold-hover: #FFDF40;
  --meritus-gold-dark: #D4B218;
  --meritus-gold-glow: rgba(242, 208, 42, 0.35);
  --meritus-gold-subtle: rgba(242, 208, 42, 0.12);
  --meritus-gold-border: rgba(242, 208, 42, 0.28);

  --meritus-navy: #2A303F;
  --meritus-navy-deep: #1E2330;
  --meritus-navy-darkest: #141722;
  --meritus-navy-surface: #242A38;
  --meritus-navy-card: rgba(42, 48, 63, 0.85);
  --meritus-navy-glass: rgba(30, 35, 48, 0.72);

  /* Neutrals */
  --text-primary: #F8FAFC;
  --text-secondary: #CBD5E1;
  --text-muted: #94A3B8;
  --bg-body: #161A24;
  --bg-surface: #1E2330;
  --bg-card: #242A38;
  --border-light: rgba(255, 255, 255, 0.08);
  --border-card: rgba(242, 208, 42, 0.18);

  /* Gradients */
  --gradient-gold: linear-gradient(135deg, #F2D02A 0%, #E5BE14 100%);
  --gradient-gold-text: linear-gradient(135deg, #FFF176 0%, #F2D02A 50%, #CFA80D 100%);
  --gradient-navy: linear-gradient(180deg, #2A303F 0%, #161A24 100%);
  --gradient-card: linear-gradient(145deg, rgba(42, 48, 63, 0.9) 0%, rgba(22, 26, 36, 0.95) 100%);
  --gradient-hero: linear-gradient(180deg, rgba(20, 23, 34, 0.82) 0%, rgba(22, 26, 36, 0.92) 100%);

  /* Shadows */
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.5);
  --shadow-gold: 0 10px 30px rgba(242, 208, 42, 0.25);
  --shadow-gold-sm: 0 4px 16px rgba(242, 208, 42, 0.2);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

  /* Fonts */
  --font-heading: 'Outfit', 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Oswald', sans-serif;
}

/* Light Theme Variables */
[data-theme="light"] {
  --text-primary: #1E2330;
  --text-secondary: #334155;
  --text-muted: #64748B;
  --bg-body: #F4F6F9;
  --bg-surface: #FFFFFF;
  --bg-card: #FFFFFF;
  --border-light: rgba(42, 48, 63, 0.1);
  --border-card: rgba(242, 208, 42, 0.35);

  --meritus-navy-surface: #F8FAFC;
  --meritus-navy-card: #FFFFFF;
  --meritus-navy-glass: rgba(255, 255, 255, 0.85);

  --gradient-navy: linear-gradient(180deg, #FFFFFF 0%, #F1F5F9 100%);
  --gradient-card: linear-gradient(145deg, #FFFFFF 0%, #F8FAFC 100%);
  --gradient-hero: linear-gradient(180deg, rgba(255, 255, 255, 0.88) 0%, rgba(241, 245, 249, 0.95) 100%);

  --shadow-sm: 0 4px 12px rgba(42, 48, 63, 0.08);
  --shadow-md: 0 10px 30px rgba(42, 48, 63, 0.12);
  --shadow-lg: 0 20px 45px rgba(42, 48, 63, 0.15);
}

/* Base resets & typography */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: clip;
  transition: background-color var(--transition-base), color var(--transition-base);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  content-visibility: auto;
}

::selection {
  background: var(--meritus-gold);
  color: var(--meritus-navy-darkest);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 9px;
}
::-webkit-scrollbar-track {
  background: var(--meritus-navy-darkest);
}
::-webkit-scrollbar-thumb {
  background: var(--meritus-navy);
  border-radius: var(--radius-full);
  border: 2px solid var(--meritus-navy-darkest);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--meritus-gold);
}