*, *::before, *::after { box-sizing: border-box; }

html {
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--ig-font-sans);
  color: var(--ig-text);
  background: var(--ig-bg);
  background-image:
    linear-gradient(var(--ig-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--ig-grid) 1px, transparent 1px);
  background-size: 32px 32px;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em;
  font-weight: 600;
  letter-spacing: -0.02em;
}

a { color: var(--ig-cyan); text-decoration: none; }
a:hover { color: var(--ig-green); }

.ig-app {
  display: grid;
  grid-template-columns: var(--ig-sidebar-w) 1fr;
  grid-template-rows: var(--ig-header-h) 1fr;
  min-height: 100vh;
}

.ig-header {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  background: var(--ig-bg-elevated);
  border-bottom: 1px solid var(--ig-border);
  z-index: 100;
}

.ig-header__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.ig-header__logo {
  width: 28px;
  height: 28px;
  border: 1px solid var(--ig-border-strong);
  border-radius: var(--ig-radius);
  display: grid;
  place-items: center;
  color: var(--ig-green);
  font-family: var(--ig-font-mono);
  font-size: 0.75rem;
  box-shadow: var(--ig-glow-green);
}

.ig-header__title {
  font-family: var(--ig-font-mono);
  font-size: 0.95rem;
  color: var(--ig-green);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ig-header__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.ig-sidebar {
  background: var(--ig-bg-elevated);
  border-right: 1px solid var(--ig-border);
  padding: 1rem 0;
  overflow-y: auto;
}

.ig-nav {
  list-style: none;
  margin: 0;
  padding: 0;
}

.ig-nav__section {
  padding: 0.5rem 1rem 0.25rem;
  font-size: 0.65rem;
  font-family: var(--ig-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ig-text-dim);
}

.ig-nav__link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 1rem;
  color: var(--ig-text-muted);
  border-left: 2px solid transparent;
  transition: var(--ig-transition);
}

.ig-nav__link:hover {
  color: var(--ig-text);
  background: var(--ig-panel);
}

.ig-nav__link.active {
  color: var(--ig-green);
  border-left-color: var(--ig-green);
  background: rgba(0, 255, 157, 0.05);
}

.ig-nav__icon {
  width: 1.1rem;
  text-align: center;
  font-family: var(--ig-font-mono);
  font-size: 0.8rem;
  opacity: 0.7;
}

.ig-main {
  padding: 1.25rem 1.5rem;
  overflow-y: auto;
  max-height: calc(100vh - var(--ig-header-h));
}

.ig-page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.ig-page-header__title {
  font-size: 1.35rem;
}

.ig-page-header__subtitle {
  color: var(--ig-text-muted);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.ig-grid {
  display: grid;
  gap: var(--ig-gap);
}

.ig-grid--2 { grid-template-columns: repeat(2, 1fr); }
.ig-grid--3 { grid-template-columns: repeat(3, 1fr); }
.ig-grid--4 { grid-template-columns: repeat(4, 1fr); }
.ig-grid--auto { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

@media (max-width: 1200px) {
  .ig-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .ig-grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .ig-app { grid-template-columns: 1fr; }
  .ig-sidebar {
    position: fixed;
    left: -100%;
    top: var(--ig-header-h);
    bottom: 0;
    width: var(--ig-sidebar-w);
    z-index: 200;
    transition: left 0.2s;
  }
  .ig-sidebar.open { left: 0; }
  .ig-grid--2, .ig-grid--3, .ig-grid--4 { grid-template-columns: 1fr; }
}

.ig-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--ig-gap);
}

@media (max-width: 900px) {
  .ig-split { grid-template-columns: 1fr; }
}

.ig-mono { font-family: var(--ig-font-mono); }
.ig-text-muted { color: var(--ig-text-muted); }
.ig-text-dim { color: var(--ig-text-dim); }
.ig-text-green { color: var(--ig-green); }
.ig-text-cyan { color: var(--ig-cyan); }
.ig-text-danger { color: var(--ig-danger); }
.ig-text-warning { color: var(--ig-warning); }

.ig-mt-1 { margin-top: 0.5rem; }
.ig-mt-2 { margin-top: 1rem; }
.ig-mb-2 { margin-bottom: 1rem; }
.ig-gap-sm { gap: 0.5rem; }
.ig-flex { display: flex; }
.ig-flex-wrap { flex-wrap: wrap; }
.ig-items-center { align-items: center; }
.ig-justify-between { justify-content: space-between; }