* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: transparent;
}

a {
  color: inherit;
  text-decoration: none;
}

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

input,
select,
textarea,
button {
  font-family: inherit;
}

:focus-visible {
  outline: 3px solid rgba(28, 110, 208, 0.4);
  outline-offset: 2px;
}

.app-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.layout-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  background: var(--color-text);
  color: #fff;
  padding: var(--space-5) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  z-index: var(--z-sidebar);
}

.app-content {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.layout-topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-topbar);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  padding: var(--space-4) var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
}

.page-content {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.l-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.l-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
}

.l-content {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.l-topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-topbar);
}

.l-main {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.u-text-muted {
  color: var(--color-muted);
}

.u-mt-2 {
  margin-top: var(--space-2);
}

.u-mb-2 {
  margin-bottom: var(--space-2);
}

.grid {
  display: grid;
  gap: var(--space-5);
}

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

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.text-center {
  text-align: center;
}

.text-success {
  color: var(--color-success);
}

.text-danger {
  color: var(--color-danger);
}

.auth-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, #dbe9ff 0%, #fef3d4 50%, #f1f4f8 100%);
}

.centered {
  max-width: 420px;
  background: var(--color-surface);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
}

@media (max-width: 1024px) {
  .app-shell {
    grid-template-columns: 88px 1fr;
  }

  .sidebar-link span,
  .brand__text,
  .user-card__info {
    display: none;
  }
}

@media (max-width: 768px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .layout-sidebar {
    position: fixed;
    left: 0;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }

  .layout-sidebar.is-open {
    transform: translateX(0);
  }

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