/* =========================================================
   D3F Solutions — Global Design System
   ========================================================= */

:root {
  /* Brand */
  --d3f-blue: #0D407F;
  --d3f-blue-600: #0a3469;
  --d3f-blue-700: #082a55;
  --d3f-blue-50: #eef3fa;
  --d3f-green: #2C9A3D;
  --d3f-green-600: #248234;
  --d3f-green-50: #ecf7ee;

  /* Neutrals */
  --ink-900: #0b1220;
  --ink-800: #14213d;
  --ink-700: #1f2a44;
  --ink-600: #334155;
  --ink-500: #475569;
  --ink-400: #64748b;
  --ink-300: #94a3b8;
  --ink-200: #cbd5e1;
  --ink-100: #e2e8f0;
  --ink-50:  #f1f5f9;
  --paper:   #ffffff;
  --paper-2: #f8fafc;

  /* Accents (for industry / product chips) */
  --accent-amber: #f59e0b;
  --accent-rose:  #e11d48;
  --accent-violet:#7c3aed;
  --accent-teal:  #0d9488;

  /* Sizing & motion */
  --radius-sm: 8px;
  --radius:    12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --shadow:    0 4px 16px rgba(15, 23, 42, .08);
  --shadow-lg: 0 20px 40px -12px rgba(15, 23, 42, .18);
  --easing:    cubic-bezier(.2, .8, .2, 1);

  /* Layout */
  --container: 1200px;
  --header-h:  76px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-800);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a { color: var(--d3f-blue); text-decoration: none; transition: color .2s var(--easing); }
a:hover { color: var(--d3f-green); }

h1, h2, h3, h4 {
  font-family: 'Sora', 'Inter', system-ui, sans-serif;
  color: var(--ink-900);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h1 { font-size: clamp(2.25rem, 4.4vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.375rem; font-weight: 600; }
h4 { font-size: 1.125rem; font-weight: 600; }

p  { color: var(--ink-600); }

.container {
  width: min(92%, var(--container));
  margin-inline: auto;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s var(--easing), box-shadow .25s var(--easing), background .2s var(--easing), color .2s var(--easing), border-color .2s var(--easing);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(135deg, var(--d3f-green) 0%, var(--d3f-green-600) 100%);
  color: #fff;
  box-shadow: var(--shadow);
}
.btn-primary:hover { color: #fff; box-shadow: var(--shadow-lg); }

.btn-secondary {
  background: var(--d3f-blue);
  color: #fff;
}
.btn-secondary:hover { background: var(--d3f-blue-600); color: #fff; }

.btn-outline {
  background: transparent;
  border-color: var(--ink-200);
  color: var(--ink-800);
}
.btn-outline:hover { border-color: var(--d3f-blue); color: var(--d3f-blue); }

.btn-ghost {
  background: transparent;
  color: var(--d3f-blue);
  padding-inline: 4px;
}
.btn-ghost:hover { color: var(--d3f-green); }

.btn-large { padding: 16px 32px; font-size: 1rem; }

/* ---------- Section Scaffolding ---------- */
section {
  padding: clamp(60px, 9vw, 110px) 0;
}

.eyebrow {
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--d3f-green-600);
  background: var(--d3f-green-50);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-head p {
  font-size: 1.05rem;
  margin-top: 14px;
}

/* ---------- Cards ---------- */
.card {
  background: var(--paper);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform .35s var(--easing), box-shadow .35s var(--easing), border-color .25s var(--easing);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

/* ---------- Page Banner (reusable hero for subpages) ---------- */
.page-banner {
  position: relative;
  padding: clamp(80px, 12vw, 140px) 0 clamp(60px, 8vw, 90px);
  background:
    radial-gradient(1200px 400px at 80% -10%, rgba(44, 154, 61, .18), transparent 60%),
    radial-gradient(1200px 500px at -10% 110%, rgba(13, 64, 127, .25), transparent 65%),
    linear-gradient(135deg, var(--d3f-blue-700) 0%, var(--d3f-blue) 60%, #112e5c 100%);
  color: #fff;
  overflow: hidden;
  text-align: center;
}
.page-banner::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(255,255,255,.08) 1px, transparent 0);
  background-size: 28px 28px;
  opacity: .5;
  pointer-events: none;
}
.page-banner h1 { color: #fff; }
.page-banner p {
  color: rgba(255, 255, 255, .82);
  font-size: 1.15rem;
  max-width: 680px;
  margin: 18px auto 0;
}
.breadcrumb {
  position: relative;
  font-size: .85rem;
  margin-bottom: 18px;
  color: rgba(255,255,255,.7);
}
.breadcrumb a { color: rgba(255,255,255,.85); }
.breadcrumb a:hover { color: #fff; }

/* ---------- Reveal-on-scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .8s var(--easing), transform .8s var(--easing);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Utility ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--d3f-blue);
  color: #fff;
  padding: 10px 16px;
  z-index: 10000;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; color: #fff; }

::selection { background: var(--d3f-green); color: #fff; }

/* Respect users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}