/* ============================================================
   4MUR Design System — Base Variables & Reset
   ============================================================ */
:root {
  /* Brand Colors (Deep Blue -> Vibrant Blue) */
  --mr-primary: #2563EB;
  --mr-primary-dark: #1D4ED8;
  --mr-primary-light: #60A5FA;
  --mr-accent: #38BDF8;
  --mr-accent-dark: #0284C7;
  --mr-success: #10B981;
  --mr-danger: #EF4444;
  --mr-warning: #F59E0B;
  --mr-info: #0EA5E9;

  /* Neutrals */
  --mr-bg: #FFFFFF;
  --mr-bg-alt: #F8FAFC;
  --mr-bg-dark: #0A1128;
  --mr-surface: #FFFFFF;
  --mr-surface-2: #F1F5F9;
  --mr-border: #E2E8F0;
  --mr-border-light: #F1F5F9;
  --mr-text: #0F172A;
  --mr-text-muted: #64748B;
  --mr-text-light: #94A3B8;

  /* Typography (Phase 1: Poppins Everywhere) */
  --mr-font: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mr-font-mono: 'JetBrains Mono', monospace;

  /* Spacing (4px grid) */
  --mr-sp-1: 0.25rem; --mr-sp-2: 0.5rem; --mr-sp-3: 0.75rem;
  --mr-sp-4: 1rem; --mr-sp-5: 1.25rem; --mr-sp-6: 1.5rem;
  --mr-sp-8: 2rem; --mr-sp-10: 2.5rem; --mr-sp-12: 3rem;
  --mr-sp-16: 4rem; --mr-sp-20: 5rem;

  /* Radius (Modern UI) */
  --mr-radius-sm: 0.375rem;
  --mr-radius: 0.75rem;
  --mr-radius-lg: 1rem;
  --mr-radius-xl: 1.5rem;
  --mr-radius-full: 9999px;

  /* Soft Shadows */
  --mr-shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --mr-shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --mr-shadow: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.05);
  --mr-shadow-md: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --mr-shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);

  /* Transitions */
  --mr-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --mr-transition: 0.2s var(--mr-ease);
  --mr-transition-slow: 0.3s var(--mr-ease);

  /* Gradients */
  --mr-gradient: linear-gradient(135deg, #0A2540 0%, #2563EB 100%);
  --mr-gradient-hero: linear-gradient(135deg, #0A1128 0%, #172554 50%, #1D4ED8 100%);
  --mr-gradient-accent: linear-gradient(135deg, #38BDF8 0%, #2563EB 100%);

  /* Layout */
  --mr-header-h: 64px;
  --mr-mobile-nav-h: 60px;
  --mr-container: 1280px;
}

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--mr-font);
  color: var(--mr-text);
  background: var(--mr-bg);
  line-height: 1.6;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--mr-primary); text-decoration: none; transition: color var(--mr-transition); }
a:hover { color: var(--mr-primary-dark); }

/* ── Utility Classes ──────────────────────────────────────── */
.mr-container { max-width: var(--mr-container); margin: 0 auto; padding: 0 var(--mr-sp-4); }
.mr-section { padding: var(--mr-sp-16) 0; }
.mr-section-alt { background: var(--mr-bg-alt); }

.mr-eyebrow {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--mr-primary); margin-bottom: var(--mr-sp-2);
  display: flex; align-items: center; gap: var(--mr-sp-2);
}

.mr-section-title {
  font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800;
  color: var(--mr-text); margin-bottom: var(--mr-sp-2); line-height: 1.2;
}

.mr-section-sub {
  color: var(--mr-text-muted); font-size: 0.95rem; max-width: 560px;
}

.mr-section-header {
  display: flex; justify-content: space-between; align-items: flex-end;
  margin-bottom: var(--mr-sp-8); flex-wrap: wrap; gap: var(--mr-sp-4);
}

.mr-section-link {
  font-size: 0.875rem; font-weight: 600; color: var(--mr-primary);
  display: flex; align-items: center; gap: var(--mr-sp-2); white-space: nowrap;
}
.mr-section-link:hover { gap: var(--mr-sp-3); }

/* ── Buttons ──────────────────────────────────────────────── */
.mr-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--mr-sp-2);
  padding: 0.625rem 1.5rem; border-radius: var(--mr-radius);
  font-weight: 600; font-size: 0.875rem; border: 2px solid transparent;
  cursor: pointer; transition: all var(--mr-transition); text-decoration: none;
  line-height: 1.4;
}
.mr-btn-primary {
  background: var(--mr-gradient); color: #fff; border-color: transparent;
}
.mr-btn-primary:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: var(--mr-shadow-md); color: #fff; }
.mr-btn-outline {
  background: transparent; color: var(--mr-primary); border-color: var(--mr-primary);
}
.mr-btn-outline:hover { background: var(--mr-primary); color: #fff; }
.mr-btn-white {
  background: #fff; color: var(--mr-primary); border-color: #fff;
}
.mr-btn-white:hover { background: var(--mr-bg-alt); }
.mr-btn-lg { padding: 0.875rem 2rem; font-size: 1rem; }
.mr-btn-sm { padding: 0.375rem 1rem; font-size: 0.8125rem; }
.mr-btn-icon {
  width: 40px; height: 40px; padding: 0; border-radius: var(--mr-radius);
}

/* ── Cards ────────────────────────────────────────────────── */
.mr-card {
  background: var(--mr-surface); border: 1px solid var(--mr-border-light);
  border-radius: var(--mr-radius-lg); overflow: hidden;
  transition: all var(--mr-transition-slow);
}
.mr-card:hover { box-shadow: var(--mr-shadow-md); transform: translateY(-4px); border-color: var(--mr-border); }

/* ── Skeleton Loader ──────────────────────────────────────── */
.mr-skeleton {
  background: linear-gradient(90deg, var(--mr-surface-2) 25%, #e2e8f0 50%, var(--mr-surface-2) 75%);
  background-size: 200% 100%;
  animation: mr-shimmer 1.5s infinite;
  border-radius: var(--mr-radius-sm);
}
@keyframes mr-shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ── Scroll Reveal ────────────────────────────────────────── */
.mr-reveal {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.6s var(--mr-ease), transform 0.6s var(--mr-ease);
}
.mr-reveal.visible { opacity: 1; transform: translateY(0); }
.mr-reveal-d1 { transition-delay: 0.1s; }
.mr-reveal-d2 { transition-delay: 0.2s; }
.mr-reveal-d3 { transition-delay: 0.3s; }

/* ── Page Loader ──────────────────────────────────────────── */
.mr-loader {
  position: fixed; inset: 0; z-index: 9999; background: #fff;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.4s ease;
}
.mr-loader.hidden { opacity: 0; pointer-events: none; }

/* ── Skip Nav ─────────────────────────────────────────────── */
.skip-nav {
  position: absolute; top: -100%; left: 50%; transform: translateX(-50%);
  background: var(--mr-primary); color: #fff; padding: var(--mr-sp-2) var(--mr-sp-4);
  border-radius: var(--mr-radius); z-index: 10000; font-weight: 600;
}
.skip-nav:focus { top: var(--mr-sp-2); color: #fff; }

/* ── Badge ────────────────────────────────────────────────── */
.mr-badge {
  display: inline-flex; align-items: center; padding: 0.2em 0.6em;
  font-size: 0.7rem; font-weight: 700; border-radius: var(--mr-radius-full);
  line-height: 1.2;
}
.mr-badge-primary { background: var(--mr-primary); color: #fff; }
.mr-badge-danger { background: var(--mr-danger); color: #fff; }
.mr-badge-success { background: var(--mr-success); color: #fff; }
.mr-badge-warning { background: var(--mr-warning); color: #1E293B; }

/* ── Form Styles ──────────────────────────────────────────── */
.mr-input {
  width: 100%; padding: 0.625rem 0.875rem; border: 1.5px solid var(--mr-border);
  border-radius: var(--mr-radius); font-size: 0.9rem; font-family: var(--mr-font);
  transition: border-color var(--mr-transition), box-shadow var(--mr-transition);
  background: var(--mr-surface);
}
.mr-input:focus {
  outline: none; border-color: var(--mr-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}
.mr-label {
  display: block; font-size: 0.8125rem; font-weight: 600;
  color: var(--mr-text); margin-bottom: var(--mr-sp-1);
}