:root {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-canvas);
  letter-spacing: 0;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--color-canvas); }
body { margin: 0; min-width: 320px; background: var(--color-canvas); color: var(--color-text); transition: background-color var(--motion-fast) ease, color var(--motion-fast) ease; }
button, input, select, textarea { font: inherit; letter-spacing: 0; }
button, select, input[type="checkbox"] { cursor: pointer; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--color-focus-ring); outline-offset: 2px; }
button:disabled, input:disabled, select:disabled, textarea:disabled { cursor: not-allowed; opacity: 0.5; }
::selection { background: var(--color-primary-soft); color: var(--color-text-strong); }
[hidden] { display: none !important; }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 236px minmax(0, 1fr); background: var(--color-canvas); }
.sidebar { position: relative; z-index: 50; background: var(--color-sidebar); color: var(--color-sidebar-text); border-right: 1px solid var(--color-sidebar-border); padding: 18px 12px; display: flex; flex-direction: column; gap: 20px; }
.sidebar-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.sidebar-close { display: none; border-color: var(--color-sidebar-border); background: var(--color-sidebar-hover); color: var(--color-sidebar-text); }
.brand { padding: 4px 12px; display: grid; gap: 4px; }
.brand strong { color: var(--color-sidebar-text); font-size: 20px; font-weight: 780; }
.brand span, .sidebar-foot { color: var(--color-sidebar-muted); font-size: 12px; }
.sidebar nav { display: grid; gap: 4px; flex: 1; min-height: 0; overflow-y: auto; }
.nav-item { position: relative; min-height: 44px; border: 0; border-radius: var(--radius-control); background: transparent; color: var(--color-sidebar-muted); text-align: left; padding: 7px 10px 7px 14px; display: flex; align-items: center; gap: 10px; transition: background-color var(--motion-fast) ease, color var(--motion-fast) ease; }
.nav-item::before { content: ""; position: absolute; inset: 9px auto 9px 0; width: 3px; border-radius: 2px; background: transparent; }
.nav-item:hover { background: var(--color-sidebar-hover); color: var(--color-sidebar-text); }
.nav-item.active { background: var(--color-sidebar-active); color: var(--color-sidebar-text); font-weight: 700; }
.nav-item.active::before { background: var(--color-sidebar-indicator); }
.nav-icon { --nav-icon-color: var(--color-nav-emerald); width: 28px; height: 28px; flex: 0 0 28px; border-radius: 7px; display: inline-grid; place-items: center; color: var(--nav-icon-color); background: color-mix(in srgb, var(--nav-icon-color) 14%, transparent); transition: background-color var(--motion-fast) ease, color var(--motion-fast) ease; }
.nav-icon-svg { width: 16px; height: 16px; }
.nav-label { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-item:hover .nav-icon { background: color-mix(in srgb, var(--nav-icon-color) 22%, transparent); }
.nav-item.active .nav-icon { background: var(--nav-icon-color); color: var(--color-sidebar); }
.tone-emerald { --nav-icon-color: var(--color-nav-emerald); }
.tone-blue { --nav-icon-color: var(--color-nav-blue); }
.tone-amber { --nav-icon-color: var(--color-nav-amber); }
.tone-cyan { --nav-icon-color: var(--color-nav-cyan); }
.tone-violet { --nav-icon-color: var(--color-nav-violet); }
.tone-rose { --nav-icon-color: var(--color-nav-rose); }
.tone-sky { --nav-icon-color: var(--color-nav-sky); }
.tone-slate { --nav-icon-color: var(--color-nav-slate); }
.tone-orange { --nav-icon-color: var(--color-nav-orange); }
.tone-red { --nav-icon-color: var(--color-nav-red); }
.sidebar-foot { margin-top: auto; padding: 12px; display: flex; gap: 8px; align-items: center; border-top: 1px solid var(--color-sidebar-border); }
.status-dot { width: 8px; height: 8px; flex: 0 0 auto; background: var(--color-success); border-radius: 50%; box-shadow: 0 0 0 3px var(--color-success-soft); }
.sidebar-backdrop { position: fixed; inset: 0; z-index: 40; border: 0; background: var(--color-overlay); padding: 0; cursor: default; backdrop-filter: blur(2px); }

.workspace { padding: 0 var(--space-page-desktop) 30px; max-width: 1500px; width: 100%; margin: 0 auto; background: var(--color-canvas); }
.topbar { position: sticky; top: 0; z-index: 30; height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--color-border); background: var(--color-topbar); box-shadow: var(--shadow-topbar); backdrop-filter: blur(14px); }
.workspace-title { display: grid; gap: 1px; min-width: 0; }
.mobile-page-heading { display: none; min-width: 0; align-items: center; gap: 9px; }
.mobile-page-heading h1 { min-width: 0; margin: 0; overflow: hidden; color: var(--color-heading); font-size: 19px; font-weight: 760; line-height: 1.2; text-overflow: ellipsis; white-space: nowrap; }
.workspace-title span, .page-header p, .panel-heading p { margin: 0; color: var(--color-text-muted); font-size: 12px; }
.workspace-title strong { overflow: hidden; color: var(--color-heading); font-size: 14px; text-overflow: ellipsis; white-space: nowrap; }
.top-actions { display: flex; gap: 8px; align-items: center; }

.icon-button, .profile-button, .secondary-button, .primary-button, .danger-button { min-height: var(--control-height); border-radius: var(--radius-control); transition: background-color var(--motion-fast) ease, border-color var(--motion-fast) ease, color var(--motion-fast) ease, box-shadow var(--motion-fast) ease; }
.icon-button { width: var(--control-height); min-width: var(--control-height); display: inline-grid; place-items: center; border: 1px solid var(--color-border-strong); background: var(--color-surface); color: var(--color-text-muted); padding: 0; font-size: 18px; line-height: 1; box-shadow: var(--shadow-control); }
.icon-button:hover, .secondary-button:hover { border-color: var(--color-primary-border); background: var(--color-primary-soft); color: var(--color-primary-strong); }
.icon-button.active { border-color: var(--color-primary-border); background: var(--color-primary-soft); color: var(--color-primary-strong); }
.topbar-icon { width: 17px; height: 17px; }
.profile-button { width: var(--control-height); display: inline-grid; place-items: center; border: 1px solid var(--color-primary-strong); background: var(--color-primary); color: var(--color-on-primary); padding: 0; font-weight: 750; box-shadow: var(--shadow-control); }
.profile-button:hover, .primary-button:hover { border-color: var(--color-primary-strong); background: var(--color-primary-strong); }
.menu-button { display: none; }
.primary-button { border: 1px solid var(--color-primary); background: var(--color-primary); color: var(--color-on-primary); padding: 0 13px; font-weight: 700; box-shadow: var(--shadow-control); }
.secondary-button { border: 1px solid var(--color-border-strong); background: var(--color-surface); color: var(--color-text); padding: 0 12px; box-shadow: var(--shadow-control); }
.danger-button { border: 1px solid var(--color-danger-border); background: var(--color-surface); color: var(--color-danger); padding: 0 14px; font-weight: 700; }
.danger-button:hover { background: var(--color-danger-soft); border-color: var(--color-danger); }

.page-header { display: flex; justify-content: space-between; align-items: end; padding: 24px 0 16px; gap: 16px; }
.page-header h1, .panel-heading h2 { margin: 3px 0 0; color: var(--color-heading); font-size: 22px; line-height: 1.2; font-weight: 760; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}