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

html {
  height: 100%;
}

body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  line-height: var(--lh-body);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(15, 107, 92, 0.06), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(20, 32, 28, 0.04), transparent 50%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
}

[dir="rtl"] body {
  font-family: "Vazirmatn", var(--font-sans);
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: var(--accent-hover);
}

img {
  max-width: 100%;
  display: block;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* —— App shell —— */
.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
  transition: grid-template-columns var(--dur) var(--ease);
}

.app-shell.is-collapsed {
  grid-template-columns: var(--sidebar-collapsed-w) 1fr;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-4);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  border-inline-end: 1px solid var(--border);
  backdrop-filter: blur(10px);
  z-index: 40;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2);
  color: var(--text);
  min-height: 44px;
}

.brand-logo {
  display: block;
  width: 136px;
  height: auto;
  object-fit: contain;
}

[data-theme="nocturne"] .brand-logo,
[data-theme="graphite"] .brand-logo {
  filter: brightness(0) invert(0.92);
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(145deg, var(--accent) 0%, var(--accent-ink) 100%);
  color: #fff;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  flex-shrink: 0;
  box-shadow: var(--shadow-1);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 560;
  letter-spacing: -0.02em;
  line-height: 1;
}

.brand-tag {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  color: var(--text-3);
  margin-top: 2px;
  letter-spacing: 0.02em;
}

.app-shell.is-collapsed .brand-text,
.app-shell.is-collapsed .nav-label,
.app-shell.is-collapsed .sidebar-foot-detail,
.app-shell.is-collapsed .nav-section-label {
  display: none;
}

.app-shell.is-collapsed .brand {
  justify-content: center;
  padding-inline: 0;
}

.app-shell.is-collapsed .brand-logo {
  width: 44px;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  overflow: auto;
}

.nav-section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
  padding: var(--space-3) var(--space-3) var(--space-1);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  min-height: 40px;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.nav-link:hover {
  background: var(--surface-3);
  color: var(--text);
}

.nav-link.is-active {
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-weight: 560;
  box-shadow: inset 3px 0 0 var(--accent);
}

[dir="rtl"] .nav-link.is-active {
  box-shadow: inset -3px 0 0 var(--accent);
}

.nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  opacity: 0.9;
}

.sidebar-foot {
  border-top: 1px solid var(--border);
  padding-top: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.user-chip {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2);
  border-radius: var(--radius);
  background: var(--surface-2);
  border: 1px solid var(--border);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-ink);
  display: grid;
  place-items: center;
  font-size: var(--fs-sm);
  font-weight: 650;
  flex-shrink: 0;
}

.user-name {
  font-size: var(--fs-sm);
  font-weight: 560;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-meta {
  font-size: var(--fs-xs);
  color: var(--text-3);
}

.usage-meter {
  height: 4px;
  background: var(--bg-tint);
  border-radius: 99px;
  overflow: hidden;
  margin-top: 6px;
}

.usage-meter > span {
  display: block;
  height: 100%;
  background: var(--accent);
  border-radius: inherit;
  transition: width 400ms var(--ease);
}

.usage-meter.is-warn > span {
  background: var(--warning);
}
.usage-meter.is-danger > span {
  background: var(--danger);
}

.foot-controls {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-xs);
  color: var(--text-3);
}

.status-dot::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px var(--success-soft);
}

.status-dot[data-state="degraded"]::before {
  background: var(--warning);
  box-shadow: 0 0 0 3px var(--warning-soft);
}

.status-dot[data-state="down"]::before {
  background: var(--danger);
  box-shadow: 0 0 0 3px var(--danger-soft);
}

.main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: var(--header-h);
  padding: var(--space-3) var(--space-5);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
}

.topbar.is-solid {
  border-bottom-color: var(--border);
  background: color-mix(in srgb, var(--surface) 90%, transparent);
}

.page {
  flex: 1;
  padding: var(--space-5) var(--space-5) var(--space-7);
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
}

.page.page-wide {
  max-width: none;
  padding: 0;
}

.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.page-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: 560;
  letter-spacing: -0.02em;
  line-height: var(--lh-tight);
}

.page-sub {
  margin: 6px 0 0;
  color: var(--text-3);
  font-size: var(--fs-sm);
  max-width: 56ch;
}

.mobile-toggle,
.sidebar-backdrop {
  display: none;
}

@media (max-width: 900px) {
  .app-shell,
  .app-shell.is-collapsed {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(288px, 86vw);
    transform: translateX(-105%);
    transition: transform var(--dur) var(--ease);
    box-shadow: var(--shadow-2);
  }

  [dir="rtl"] .sidebar {
    inset: 0 0 0 auto;
    transform: translateX(105%);
  }

  .app-shell.drawer-open .sidebar {
    transform: translateX(0);
  }

  .sidebar-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(20, 32, 28, 0.35);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur) var(--ease);
    z-index: 35;
  }

  .app-shell.drawer-open .sidebar-backdrop {
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-toggle {
    display: inline-flex;
  }

  .page {
    padding: var(--space-4);
  }
}