@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root{
  --ioa-color-primary: #2563EB;
  --ioa-color-primary-hover: #1D4ED8;
  --ioa-color-text: #111827;
  --ioa-color-muted: #4B5563;
  --ioa-bg: #FFFFFF;
  --ioa-surface: #F9FAFB;
  --ioa-ring: rgba(99,102,241,.35);
}

:root[data-theme="dark"]{
  --ioa-color-primary: #60A5FA;        /* lighter primary for dark bg */
  --ioa-color-primary-hover: #3B82F6;
  --ioa-color-text: #F3F4F6;
  --ioa-color-muted: #9CA3AF;
  --ioa-bg: #0B1220;
  --ioa-surface: #111827;
  --ioa-ring: rgba(99,102,241,.5);
}

/* modern reset */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-fg);
  font-family: var(--font-sans);
}
img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
input,
select,
textarea {
  font: inherit;
}


body {
  font-family: 'Inter', var(--font-sans);
  line-height: 1.6;
  font-size: 16px;
}
.h1,
h1 {
  font-weight: 700;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.01em;
}
.h2,
h2 {
  font-weight: 700;
  font-size: clamp(24px, 4vw, 32px);
  line-height: 1.15;
}
.h3,
h3 {
  font-weight: 700;
  font-size: clamp(20px, 3vw, 24px);
  line-height: 1.2;
}
.lead {
  font: 400 var(--font-size-1) / 1.6 var(--font-sans);
  color: var(--color-muted);
}


.container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-5);
}
.grid {
  display: grid;
  gap: var(--space-6);
}
@media (min-width: 768px) {
  .grid.cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}


.m-0 {
  margin: 0;
}
.mt-4 {
  margin-top: var(--space-5);
}
.p-4 {
  padding: var(--space-5);
}
.flex {
  display: flex;
}
.items-center {
  align-items: center;
}
.justify-between {
  justify-content: space-between;
}
.gap-3 {
  gap: var(--space-3);
}
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  border: 0;
  padding: 0;
  white-space: nowrap;
  clip-path: inset(50%);
  clip: rect(0 0 0 0);
  overflow: hidden;
}
.focus-ring:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}


.ioa-btn{
  display:inline-flex; align-items:center; justify-content:center; gap:.5rem;
  font-weight:600; text-decoration:none; border:1px solid transparent;
  border-radius:.5rem; padding:.75rem 1.5rem; cursor:pointer; line-height:1.2;
  transition:background-color .15s ease, border-color .15s ease, color .15s ease, transform .02s ease;
  color: var(--ioa-btn-fg, #fff); background-color: var(--ioa-btn-bg, var(--ioa-color-primary));
  margin-right: .75rem; margin-bottom: .5rem;
}
.ioa-btn:hover{ background-color: var(--ioa-btn-bg-hover, var(--ioa-color-primary-hover)); text-decoration:none; }
.ioa-btn:active{ transform: translateY(1px); }
.ioa-btn:focus-visible{ outline: 2px solid transparent; box-shadow: 0 0 0 4px var(--ioa-ring); }

.ioa-btn--primary{ --ioa-btn-bg: var(--ioa-color-primary); --ioa-btn-bg-hover: var(--ioa-color-primary-hover); --ioa-btn-fg: #fff; }

.ioa-btn--secondary{
  background: transparent; color: var(--ioa-color-primary);
  border-color: var(--ioa-color-primary);
}
.ioa-btn--secondary:hover{
  background: color-mix(in srgb, var(--ioa-color-primary) 10%, transparent);
  text-decoration:none; color: var(--ioa-color-primary-hover); border-color: var(--ioa-color-primary-hover);
}

.ioa-btn--icon{ width:2.25rem; height:2.25rem; padding:0; border-radius:.5rem; }

a.ioa-btn, a.ioa-btn:hover, a.ioa-btn:visited{ text-decoration:none; }

/* Button group for better spacing */
.ioa-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  align-items: center;
}

.ioa-btn-group .ioa-btn {
  margin-right: 0;
  margin-bottom: 0;
}

.ioa-link{ color: var(--ioa-color-text); text-decoration:none; }
.ioa-link:hover{ color: var(--ioa-color-primary); text-decoration: underline; text-underline-offset: 2px; }

.ioa-badges{ display:flex; flex-wrap:wrap; gap:.5rem; }
.ioa-badge{
  display:inline-flex; align-items:center; gap:.375rem;
  font-size:.8125rem; font-weight:600;
  color: var(--ioa-color-text); background: var(--ioa-surface);
  border:1px solid var(--ioa-color-primary); border-radius:999px;
  padding:.25rem .625rem;
}
.ioa-badge--neutral{ border-color: var(--ioa-color-muted); }


.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
}
.nav-links {
  display: none;
}
@media (min-width: 768px) {
  .nav-links {
    display: flex;
    gap: var(--space-5);
  }
}
.nav-toggle {
  background: none;
  border: 1px solid #c7ced9;
  border-radius: var(--radius-2);
  padding: var(--space-2) var(--space-3);
}


.o-hero {
  padding: var(--space-8) 0;
}
.o-hero .cta {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-6);
}


.card {
  border: 1px solid #e5e7eb;
  border-radius: var(--radius-2);
  padding: var(--space-5);
  background: rgba(255, 255, 255, 0.6);
}
@media (prefers-color-scheme: dark) {
  .card {
    background: rgba(17, 24, 39, 0.4);
  }
}


.footer {
  padding: var(--space-8) 0;
  border-top: 1px solid #e5e7eb;
  color: var(--color-muted);
}