/* App shell: sidebar, mobile top app bar, bottom nav. */

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

/* --- Desktop sidebar ---------------------------------------------------- */

.sidebar {
  display: flex;
  flex-direction: column;
  width: var(--sidebar-width);
  height: 100vh;
  position: sticky;
  top: 0;
  flex-shrink: 0;
  padding: var(--stack-md) var(--stack-sm);
  background: var(--surface-container);
  border-right: 1px solid var(--outline-variant);
  z-index: 40;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--stack-sm);
  padding: 0 var(--stack-sm);
  margin-bottom: var(--stack-lg);
}

.sidebar__logo {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  object-fit: contain;
}

.sidebar__wordmark {
  font-family: var(--font-headline);
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.1;
}

.sidebar__version {
  color: var(--on-surface-variant);
  display: block;
}

.sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: var(--unit);
  flex: 1;
}

.sidebar__footer {
  display: flex;
  flex-direction: column;
  gap: var(--unit);
  margin-top: auto;
  padding-top: var(--stack-md);
  border-top: 1px solid var(--outline-variant);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--stack-sm);
  padding: var(--stack-sm) 12px;
  border-radius: var(--radius);
  color: var(--on-surface-variant);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
}

.nav-item:hover {
  color: var(--on-surface);
  background: var(--surface-container-high);
}

.nav-item:active {
  transform: scale(0.97);
}

.nav-item[aria-current="page"] {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
}

.sidebar__legal {
  padding: var(--stack-sm) 12px 0;
  font-size: 11px;
  line-height: 1.4;
  color: var(--on-surface-variant);
}

.sidebar__disclaimer {
  margin: 0 0 var(--unit);
}

.sidebar__legal-links {
  display: flex;
  gap: var(--stack-sm);
}

.sidebar__legal-links a {
  color: inherit;
  text-decoration: none;
}

.sidebar__legal-links a:hover {
  color: var(--on-surface);
  text-decoration: underline;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: var(--stack-sm);
  width: 100%;
  margin-top: var(--stack-md);
  padding: var(--stack-md) 12px var(--stack-sm);
  border: none;
  border-top: 1px solid var(--outline-variant);
  border-radius: var(--radius);
  background: none;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.user-chip:hover {
  background: var(--surface-container-high);
}

.user-chip__text {
  flex: 1;
  min-width: 0;
}

.user-chip__caret {
  font-size: 18px;
  color: var(--on-surface-variant);
  transition: transform 0.15s ease;
}

.user-chip[aria-expanded="true"] .user-chip__caret {
  transform: rotate(180deg);
}

.avatar {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-code);
  font-size: 12px;
  font-weight: 600;
}

.user-chip__name {
  font-family: var(--font-code);
  font-size: 12px;
  font-weight: 600;
  color: var(--on-surface);
}

.user-chip__plan {
  font-family: var(--font-code);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--on-surface-variant);
}

/* --- Main outlet -------------------------------------------------------- */

.main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.view {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

/* --- Mobile chrome ------------------------------------------------------ */

.topbar,
.bottomnav {
  display: none;
}

.onboarding-banner {
  padding: var(--stack-sm) var(--container-margin);
  background: var(--primary-container);
  color: var(--on-primary-container);
}

.onboarding-banner__form {
  display: flex;
  align-items: center;
  gap: var(--stack-sm);
  flex-wrap: wrap;
}

.onboarding-banner__form .input {
  flex: 1;
  min-width: 200px;
  max-width: 320px;
}

.topbar {
  justify-content: space-between;
  align-items: center;
  padding: var(--stack-sm) var(--container-margin);
  background: var(--surface);
  border-bottom: 1px solid var(--outline-variant);
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar__brand {
  display: flex;
  align-items: center;
  gap: var(--stack-sm);
  font-family: var(--font-headline);
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
}

.topbar__actions {
  display: flex;
  gap: var(--stack-sm);
  color: var(--on-surface-variant);
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  border: none;
  background: none;
  border-radius: var(--radius);
  color: var(--on-surface-variant);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.icon-button:hover {
  background: var(--surface-container-highest);
  color: var(--on-surface);
}

.icon-button[aria-current="page"] {
  color: var(--primary);
}

.bottomnav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  justify-content: space-around;
  align-items: center;
  padding: var(--stack-sm) 0;
  background: var(--surface);
  border-top: 1px solid var(--outline-variant);
  z-index: 50;
}

.bottomnav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--unit);
  padding: var(--unit) var(--stack-sm);
  color: var(--on-surface-variant);
  font-family: var(--font-code);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.bottomnav__item[aria-current="page"] {
  color: var(--primary);
}

/* --- Responsive: sidebar collapses to a rail under 1024px --------------- */

@media (max-width: 1024px) {
  .sidebar {
    width: var(--sidebar-rail-width);
    align-items: center;
    padding-left: var(--unit);
    padding-right: var(--unit);
  }

  .sidebar__brand {
    justify-content: center;
    padding: 0;
  }

  .sidebar__text,
  .user-chip__text,
  .user-chip__caret {
    display: none;
  }

  .nav-item {
    justify-content: center;
    padding: 10px;
  }

  .user-chip {
    justify-content: center;
    padding-left: 0;
    padding-right: 0;
  }
}

/* --- Responsive: stack under 640px, swap to mobile chrome --------------- */

@media (max-width: 640px) {
  .sidebar {
    display: none;
  }

  .topbar {
    display: flex;
  }

  .bottomnav {
    display: flex;
  }

  .main {
    height: auto;
    min-height: 100vh;
    overflow: visible;
  }

  .view {
    padding-bottom: 72px;
  }
}

/* The sidebar footer mixes links and actions; buttons must match the links. */
button.nav-item {
  width: 100%;
  border: none;
  background: none;
  font: inherit;
  text-align: left;
}

.topbar__logo {
  width: 24px;
  height: 24px;
  object-fit: contain;
}