.app {
  width: min(1520px, 96vw);
  margin: 16px auto 24px;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 14px;
  min-width: 0;
  transition: grid-template-columns 0.25s ease;
}
.app.sidebar-collapsed {
  grid-template-columns: 52px minmax(0, 1fr);
}

.auth-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 8500;
  display: none;
  place-items: center;
  padding: 24px;
  background: rgba(22, 36, 47, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.auth-modal-overlay.is-visible {
  display: grid;
}

.auth-card {
  position: relative;
  width: min(440px, 94vw);
  display: grid;
  gap: 14px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.97);
  box-shadow: var(--shadow-lg);
  animation: authCardIn 0.22s var(--ease);
}

@keyframes authCardIn {
  from { opacity: 0; transform: translateY(10px) scale(0.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-close-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-soft);
  padding: 0;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
}

.auth-close-btn:hover {
  background: var(--surface-soft);
  color: var(--ink);
}

.auth-card h1 {
  margin: 0;
  font-size: 1.35rem;
}

.auth-card p {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 0.86rem;
  line-height: 1.4;
}

.auth-tabs {
  display: flex;
  gap: 8px;
}

.auth-form {
  display: grid;
  gap: 8px;
}

.auth-form .btn-primary {
  margin-top: 4px;
}

.auth-error {
  display: none;
  border: 1px solid #efc1bb;
  border-radius: 10px;
  background: #fff2f0;
  color: var(--danger);
  padding: 8px 10px;
  font-size: 0.78rem;
  font-weight: 700;
}

.auth-error.is-visible {
  display: block;
}

.sidebar {
  padding: 16px 14px;
  position: sticky;
  top: 12px;
  height: fit-content;
  max-height: calc(100vh - 24px);
  overflow: auto;
  transition: padding 0.25s ease;
}

/* Sidebar toggle button */
.sidebar-toggle {
  width: 30px;
  height: 30px;
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-soft);
  padding: 0;
  font-size: 1rem;
  cursor: pointer;
  margin-bottom: 6px;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-xs);
}
.sidebar-toggle:hover { background: var(--surface-soft); color: var(--ink); }
.sidebar-toggle .toggle-icon {
  transition: transform 0.25s ease;
  font-size: 0.85rem;
  line-height: 1;
}

/* Collapsed sidebar */
.sidebar-collapsed .sidebar {
  padding: 10px 6px;
  overflow: hidden;
}
.sidebar-collapsed .brand,
.sidebar-collapsed .account-card,
.sidebar-collapsed .workspace-switcher,
.sidebar-collapsed .nav-btn span:not(.nav-icon),
.sidebar-collapsed .nav-btn::after {
  display: none;
}
.sidebar-collapsed .nav-list {
  gap: 4px;
}
.sidebar-collapsed .nav-btn {
  padding: 8px 0;
  font-size: 0;
  text-align: center;
  justify-content: center;
  min-height: 36px;
}
.sidebar-collapsed .nav-btn .nav-icon {
  font-size: 1.05rem;
  display: block;
  margin: 0 auto;
}
.sidebar-collapsed .sidebar-toggle {
  margin: 0 auto 8px;
}
.sidebar-collapsed .sidebar-toggle .toggle-icon {
  transform: rotate(180deg);
}

.brand {
  padding: 2px 10px 14px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 14px;
}

.brand h1 {
  margin: 0;
  font-size: 1.12rem;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, var(--ink) 30%, var(--accent-strong));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand p {
  margin: 5px 0 0;
  font-size: 0.76rem;
  color: var(--ink-soft);
  line-height: 1.4;
}

.account-card {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
  padding: 11px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
}

.account-copy {
  min-width: 0;
}

.account-copy strong,
.account-copy span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account-copy strong {
  color: #233c55;
  font-size: 0.82rem;
}

.account-copy span {
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.account-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.account-actions .btn-muted {
  min-height: 30px;
  padding: 6px 8px;
  font-size: 0.72rem;
}

.nav-list {
  display: grid;
  gap: 3px;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  text-align: left;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: #3a5468;
  padding: 9px 12px;
  font-family: inherit;
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.nav-btn:hover:not(.is-active):not(.is-locked) {
  background: var(--accent-soft);
  color: var(--ink);
}

.nav-icon {
  display: inline-flex;
  width: 20px;
  justify-content: center;
  line-height: 1;
  font-size: 0.95rem;
  filter: grayscale(1) opacity(0.65);
  transition: filter 0.15s ease;
}

.nav-btn:hover .nav-icon {
  filter: grayscale(0.4) opacity(0.9);
}

.nav-btn.is-active {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 1px 2px rgba(11, 111, 108, 0.35), 0 6px 14px rgba(15, 118, 115, 0.22);
}

.nav-btn.is-active .nav-icon {
  filter: none;
}

.nav-btn.is-locked {
  opacity: 0.52;
  cursor: not-allowed;
  position: relative;
  background: #eef3f1;
  color: #8a9da8;
  border-color: #dce5e2;
}
.nav-btn.is-locked::after {
  content: " — Coming Soon";
  font-size: 0.7em;
  font-weight: 500;
  opacity: 0.7;
}
.nav-btn.is-locked:hover {
  transform: none;
  box-shadow: none;
}

.nav-btn.is-auth-locked {
  position: relative;
}

.nav-btn.is-auth-locked::after {
  content: " - Sign in";
  font-size: 0.72em;
  font-weight: 600;
  opacity: 0.7;
}

/* Workspace switcher */
.workspace-switcher {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}
.workspace-switcher select {
  flex: 1;
  min-width: 0;
  font-size: 0.82rem;
  padding: 7px 8px;
}
.workspace-switcher .ws-add-btn {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  flex-shrink: 0;
  box-shadow: var(--shadow-xs);
}
.workspace-switcher .ws-add-btn:hover {
  filter: brightness(1.08);
}

body.is-unauthenticated .workspace-switcher {
  display: none;
}

body.is-unauthenticated .account-card {
  background: #ffffff;
}

body.is-unauthenticated .account-actions {
  grid-template-columns: 1fr;
}

body.is-unauthenticated #accountLogoutBtn {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

/* Create workspace modal */
.ws-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(22, 36, 47, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 8000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.ws-modal-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}
.ws-modal-box {
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 24px;
  width: min(460px, 90vw);
  max-height: 84vh;
  overflow: auto;
}
.ws-modal-overlay.is-visible .ws-modal-box {
  animation: authCardIn 0.22s var(--ease);
}
.ws-modal-box h3 { margin: 0 0 14px; font-size: 1.05rem; }
.ws-modal-box .control-group { margin-bottom: 12px; }
.ws-modal-actions { display: flex; gap: 8px; margin-top: 16px; }
.modal-divider {
  border: 0;
  border-top: 1px solid #e7f0ee;
  margin: 18px 0;
}

.account-sessions-list,
.account-users-list {
  display: grid;
  gap: 6px;
  margin-top: 6px;
}

.account-session-row,
.account-user-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 6px 8px;
  border: 1px solid #e2ecea;
  border-radius: 8px;
  background: #fafcfc;
}

.account-user-actions {
  display: inline-flex;
  gap: 6px;
  flex-shrink: 0;
}

.account-session-row .btn-muted,
.account-user-row .btn-muted {
  padding: 3px 8px;
  font-size: 0.72rem;
}

.account-danger-btn {
  background: #fde8e5;
  color: var(--danger, #b3402f);
  border-color: #f0c5c0;
}

/* Invitation codes and access requests */
.auth-inline-link {
  background: none;
  border: 0;
  padding: 0;
  color: var(--accent-strong);
  font-size: inherit;
  font-weight: 600;
  text-decoration: underline;
  cursor: pointer;
}

.auth-invite-field {
  display: grid;
  gap: 8px;
}

.auth-request-success {
  padding: 12px;
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-md);
  background: var(--accent-soft);
  color: #1e4744;
}

.admin-invite-create {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) 72px minmax(0, 1fr) auto;
  gap: 6px;
  align-items: center;
}

.admin-invite-create .btn-muted {
  padding: 7px 10px;
  font-size: 0.74rem;
  white-space: nowrap;
}

.invite-row.is-inactive,
.access-request-row.is-inactive {
  opacity: 0.62;
}

.invite-code-text {
  font-weight: 600;
  letter-spacing: 0.02em;
}

.access-request-row {
  align-items: flex-start;
}

.access-request-copy {
  min-width: 0;
}

.access-request-reason {
  margin-top: 4px;
  padding: 6px 8px;
  border-left: 3px solid var(--line-strong);
  background: var(--surface-soft);
  border-radius: 0 6px 6px 0;
  color: var(--ink-soft);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

@media (max-width: 620px) {
  .admin-invite-create {
    grid-template-columns: 1fr 1fr;
  }
}

/* Global toast notification */
.global-toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-80px);
  background: linear-gradient(135deg, rgba(22, 36, 48, 0.96), rgba(42, 62, 78, 0.96));
  color: #fff;
  width: min(720px, calc(100vw - 32px));
  padding: 12px 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  font-size: 0.86rem;
  font-weight: 500;
  line-height: 1.45;
  text-align: left;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 9999;
  opacity: 0;
  transition: all 0.3s var(--ease);
  pointer-events: none;
}
.global-toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.content {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.task-view {
  display: none;
  gap: 14px;
  min-width: 0;
}

.task-view.is-active {
  display: grid;
  animation: reveal 0.2s ease;
}

@keyframes reveal {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Media queries ── */

@media (max-width: 1160px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    max-height: none;
  }
}

@media (max-width: 920px) {
  .grid-2,
  .grid-3,
  .result-split {
    grid-template-columns: 1fr;
  }

  .summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .paper-move-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .summary {
    grid-template-columns: 1fr;
  }

  .bar-row {
    grid-template-columns: 1fr;
  }

  .modal-field-grid {
    grid-template-columns: 1fr;
  }
}