/* ============================================================
   IO Platform Styles — io-platform.css  v2.0
   Shared foundation for all IO platform pages
   (root, /about, /platform, /agents, /operators, /blog, /docs)
   ============================================================ */

/* --- Design Tokens --- */
:root {
  --io-black: #000000;
  --io-white: #ffffff;
  --io-blue: #0f62fe;
  --io-blue-hover: #0353e9;
  --io-green: #24a148;
  --io-gray-100: #f4f4f4;
  --io-gray-200: #e0e0e0;
  --io-gray-300: #c6c6c6;
  --io-gray-400: #a8a8a8;
  --io-gray-500: #8d8d8d;
  --io-gray-600: #6f6f6f;
  --io-gray-700: #525252;
  --io-gray-800: #393939;
  --io-gray-900: #262626;
  --io-spacing-2: 0.5rem;
  --io-spacing-4: 1rem;
  --io-spacing-6: 1.5rem;
  --io-spacing-8: 2rem;
  --io-spacing-12: 3rem;
  --io-spacing-16: 4rem;
  --io-spacing-24: 6rem;
  --io-max-width: 1200px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--io-black);
  color: var(--io-white);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ============================================================
   NAV
   ============================================================ */
.io-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 9000;
  background: rgba(0,0,0,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--io-gray-800);
  height: 48px;
  display: flex; align-items: center;
}
.io-nav-inner {
  max-width: var(--io-max-width); width: 100%; margin: 0 auto;
  padding: 0 var(--io-spacing-4);
  display: flex; align-items: center; justify-content: space-between;
  height: 100%;
}
.io-nav-brand {
  display: flex; align-items: center; gap: var(--io-spacing-2);
  text-decoration: none; color: var(--io-white);
}
.io-nav-wordmark {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.875rem; font-weight: 500;
  letter-spacing: 0.04em;
}
.io-nav-badge {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.625rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  background: var(--io-gray-800); color: var(--io-gray-400);
  padding: 2px 6px; border-radius: 2px;
}
.io-nav-links {
  display: flex; align-items: center; gap: var(--io-spacing-6);
  list-style: none; margin: 0; padding: 0;
}
.io-nav-links a {
  font-size: 0.875rem; color: var(--io-gray-400);
  text-decoration: none; transition: color 0.15s;
}
.io-nav-links a:hover,
.io-nav-links a[aria-current="page"] { color: var(--io-white); }
.io-nav-cta {
  font-size: 0.875rem; background: var(--io-blue);
  color: var(--io-white) !important;
  padding: 6px 16px; border-radius: 2px;
  text-decoration: none; font-weight: 500;
  transition: background 0.15s !important;
}
.io-nav-cta:hover { background: var(--io-blue-hover) !important; }

/* ============================================================
   HERO
   ============================================================ */
.io-hero {
  padding-top: 48px; min-height: 100vh;
  display: flex; align-items: center;
  border-bottom: 1px solid var(--io-gray-800);
  position: relative; overflow: hidden;
}
.io-hero--short { min-height: 60vh; }
.io-hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--io-gray-800) 1px, transparent 1px),
    linear-gradient(90deg, var(--io-gray-800) 1px, transparent 1px);
  background-size: 64px 64px; opacity: 0.2;
}
.io-hero-inner {
  max-width: var(--io-max-width); width: 100%; margin: 0 auto;
  padding: var(--io-spacing-24) var(--io-spacing-4);
  position: relative; z-index: 1;
}
.io-hero-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem; font-weight: 500;
  letter-spacing: 0.12em; color: var(--io-blue);
  text-transform: uppercase; margin-bottom: var(--io-spacing-4);
}
.io-hero-h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 300; line-height: 1.05;
  letter-spacing: -0.02em; max-width: 14ch;
  margin-bottom: var(--io-spacing-6);
}
.io-hero-h1 strong { font-weight: 600; }
.io-hero-sub {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  color: var(--io-gray-400); max-width: 52ch;
  margin-bottom: var(--io-spacing-8);
  font-weight: 300; line-height: 1.6;
}
.io-hero-actions {
  display: flex; align-items: center;
  gap: var(--io-spacing-4); flex-wrap: wrap;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.io-btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--io-blue); color: var(--io-white);
  text-decoration: none; padding: 14px 24px;
  font-size: 0.9375rem; font-weight: 500;
  border: none; border-radius: 2px; cursor: pointer;
  transition: background 0.15s;
}
.io-btn-primary:hover { background: var(--io-blue-hover); }
.io-btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--io-white);
  text-decoration: none; padding: 14px 24px;
  font-size: 0.9375rem; font-weight: 400;
  border: 1px solid var(--io-gray-600); border-radius: 2px;
  cursor: pointer; transition: border-color 0.15s;
}
.io-btn-secondary:hover { border-color: var(--io-white); }

/* ============================================================
   STATUS BAR
   ============================================================ */
.io-status-bar {
  display: flex; align-items: center;
  gap: var(--io-spacing-4); margin-top: var(--io-spacing-12);
  flex-wrap: wrap;
}
.io-status-item {
  display: flex; align-items: center; gap: 6px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem; color: var(--io-gray-600);
  letter-spacing: 0.04em;
}
.io-status-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--io-green); flex-shrink: 0;
}

/* ============================================================
   SECTIONS
   ============================================================ */
.io-section {
  max-width: var(--io-max-width); margin: 0 auto;
  padding: var(--io-spacing-24) var(--io-spacing-4);
}
.io-section-divider { border-top: 1px solid var(--io-gray-800); }
.io-section-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem; font-weight: 500;
  letter-spacing: 0.12em; color: var(--io-gray-600);
  text-transform: uppercase; margin-bottom: var(--io-spacing-4);
}
.io-section-h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 300; letter-spacing: -0.01em;
  margin-bottom: var(--io-spacing-4);
}
.io-section-h2 strong { font-weight: 600; }
.io-section-body {
  font-size: 1.0625rem; color: var(--io-gray-400);
  max-width: 60ch; line-height: 1.7;
  margin-bottom: var(--io-spacing-8);
}

/* ============================================================
   PILLARS (3-column)
   ============================================================ */
.io-pillars {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px; background: var(--io-gray-800);
  border: 1px solid var(--io-gray-800); margin-top: var(--io-spacing-8);
}
.io-pillar { background: var(--io-black); padding: var(--io-spacing-8); }
.io-pillar-num {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem; color: var(--io-blue);
  margin-bottom: var(--io-spacing-4);
}
.io-pillar-title { font-size: 1.125rem; font-weight: 500; margin-bottom: var(--io-spacing-2); }
.io-pillar-body { font-size: 0.9375rem; color: var(--io-gray-400); line-height: 1.6; }

/* ============================================================
   TOOL GRID
   ============================================================ */
.io-tools-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1px; background: var(--io-gray-800);
  border: 1px solid var(--io-gray-800); margin-top: var(--io-spacing-8);
}
.io-tool-card {
  background: var(--io-black); padding: var(--io-spacing-6);
  transition: background 0.15s;
}
.io-tool-card:hover { background: var(--io-gray-900); }
.io-tool-icon {
  width: 40px; height: 40px; margin-bottom: var(--io-spacing-4);
  border: 1px solid var(--io-gray-800); border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-family: "IBM Plex Mono", monospace;
  font-size: 1rem; color: var(--io-blue);
}
.io-tool-name { font-size: 0.9375rem; font-weight: 500; margin-bottom: 4px; }
.io-tool-desc { font-size: 0.8125rem; color: var(--io-gray-600); line-height: 1.5; }
.io-tool-tag {
  display: inline-block; margin-top: var(--io-spacing-2);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.625rem; letter-spacing: 0.06em;
  color: var(--io-gray-600); text-transform: uppercase;
}

/* ============================================================
   CARD GRID
   ============================================================ */
.io-card-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1px; background: var(--io-gray-800);
}
.io-card {
  background: var(--io-gray-900); padding: 2rem;
  display: flex; flex-direction: column; gap: 0.75rem;
  transition: background 0.15s ease;
}
.io-card:hover { background: var(--io-gray-800); }
.io-card h3 { font-weight: 600; font-size: 1rem; color: var(--io-white); margin: 0; }
.io-card p { font-size: 0.875rem; line-height: 1.5; color: var(--io-gray-400); margin: 0; }

/* ============================================================
   EXAMPLE / SHOWCASE
   ============================================================ */
.io-example {
  background: var(--io-gray-900); border: 1px solid var(--io-gray-800);
  padding: var(--io-spacing-8); margin-top: var(--io-spacing-8);
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--io-spacing-8); align-items: center;
}
.io-example-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem; color: var(--io-green);
  letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: var(--io-spacing-4);
}
.io-example-title { font-size: 1.75rem; font-weight: 300; margin-bottom: var(--io-spacing-4); }
.io-example-title strong { font-weight: 600; }
.io-example-body {
  font-size: 0.9375rem; color: var(--io-gray-400);
  line-height: 1.7; margin-bottom: var(--io-spacing-6);
}
.io-example-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--io-spacing-4);
}
.io-stat { border-left: 2px solid var(--io-blue); padding-left: var(--io-spacing-4); }
.io-stat-num { font-size: 1.75rem; font-weight: 600; color: var(--io-white); }
.io-stat-label { font-size: 0.8125rem; color: var(--io-gray-600); }

/* ============================================================
   FOUNDER / ABOUT
   ============================================================ */
.io-founder {
  display: grid; grid-template-columns: 1fr 1.5fr;
  gap: var(--io-spacing-12); align-items: start;
}
.io-founder-id { border: 1px solid var(--io-gray-800); padding: var(--io-spacing-6); }
.io-founder-name { font-size: 1.25rem; font-weight: 500; margin-bottom: 4px; }
.io-founder-role {
  font-size: 0.875rem; color: var(--io-gray-600);
  margin-bottom: var(--io-spacing-4);
  font-family: "IBM Plex Mono", monospace;
}
.io-founder-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.io-tag {
  font-size: 0.75rem; color: var(--io-gray-400);
  background: var(--io-gray-800); padding: 3px 8px; border-radius: 2px;
}
.io-founder-bio { font-size: 1.0625rem; color: var(--io-gray-400); line-height: 1.75; }
.io-founder-bio p + p { margin-top: var(--io-spacing-4); }
.io-contact {
  margin-top: var(--io-spacing-8); border: 1px solid var(--io-gray-800);
  padding: var(--io-spacing-6); display: inline-block;
}
.io-contact a {
  color: var(--io-blue); text-decoration: none;
  font-family: "IBM Plex Mono", monospace; font-size: 0.9375rem;
}
.io-contact a:hover { text-decoration: underline; }

/* ============================================================
   FOOTER
   ============================================================ */
.io-footer {
  border-top: 1px solid var(--io-gray-800);
  padding: var(--io-spacing-16) var(--io-spacing-4) var(--io-spacing-8);
  max-width: var(--io-max-width); margin: 0 auto;
}
.io-footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--io-spacing-8);
  margin-bottom: var(--io-spacing-12);
}
.io-footer-col {
  display: flex; flex-direction: column; gap: 0.625rem;
}
.io-footer-col-title {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--io-gray-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.25rem;
}
.io-footer-col a {
  font-size: 0.875rem; color: var(--io-gray-500);
  text-decoration: none; transition: color 0.15s;
  line-height: 1.4;
}
.io-footer-col a:hover { color: var(--io-white); }
.io-footer-bottom {
  border-top: 1px solid var(--io-gray-800);
  padding-top: var(--io-spacing-6);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
}
.io-footer-brand {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8125rem; color: var(--io-gray-600);
}
.io-footer-links { display: flex; gap: var(--io-spacing-6); flex-wrap: wrap; }
.io-footer-links a {
  font-size: 0.8125rem; color: var(--io-gray-600);
  text-decoration: none; transition: color 0.15s;
}
.io-footer-links a:hover { color: var(--io-white); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .io-nav-links a:not(.io-nav-cta) { display: none; }
  .io-hero { min-height: auto; padding-top: 48px; }
  .io-hero-inner { padding: var(--io-spacing-16) var(--io-spacing-4); }
  .io-hero-h1 { font-size: clamp(1.75rem, 5vw, 2.5rem); max-width: none; }
  .io-section { padding: var(--io-spacing-12) var(--io-spacing-4); }
  .io-section-h2 { font-size: 1.5rem; }
  .io-example { grid-template-columns: 1fr; }
  .io-founder { grid-template-columns: 1fr; }
  .io-card-grid { grid-template-columns: 1fr; }
  .io-tools-grid { grid-template-columns: 1fr; }
  .io-footer-grid { grid-template-columns: repeat(2, 1fr); gap: var(--io-spacing-8) var(--io-spacing-4); }
  .io-footer-links { flex-direction: column; gap: 0.75rem; }
}
@media (max-width: 480px) {
  .io-footer-grid { grid-template-columns: 1fr; }
}