.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);
}

.sidebar {
  padding: 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: 100%;
  border: 1px solid #d7e5e2;
  border-radius: 10px;
  background: #f3faf8;
  color: var(--ink-soft);
  padding: 6px 0;
  font-size: 1rem;
  cursor: pointer;
  margin-bottom: 10px;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}
.sidebar-toggle:hover { background: #e6f2ee; }
.sidebar-toggle .toggle-icon {
  transition: transform 0.25s ease;
  font-size: 0.9rem;
}

/* Collapsed sidebar */
.sidebar-collapsed .sidebar {
  padding: 10px 6px;
  overflow: hidden;
}
.sidebar-collapsed .brand,
.sidebar-collapsed .workspace-switcher,
.sidebar-collapsed .nav-btn span,
.sidebar-collapsed .nav-btn::after {
  display: none;
}
.sidebar-collapsed .nav-list {
  gap: 6px;
}
.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;
}
.sidebar-collapsed .sidebar-toggle {
  padding: 6px 0;
  margin-bottom: 8px;
}
.sidebar-collapsed .sidebar-toggle .toggle-icon {
  transform: rotate(180deg);
}

.brand {
  padding: 8px 8px 12px;
  border-bottom: 1px solid #e7f0ee;
  margin-bottom: 12px;
}

.brand h1 {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.brand p {
  margin: 4px 0 0;
  font-size: 0.78rem;
  color: var(--ink-soft);
  line-height: 1.35;
}

.nav-list {
  display: grid;
  gap: 8px;
}

.nav-btn {
  text-align: left;
  border: 1px solid #d7e5e2;
  border-radius: 12px;
  background: #f3faf8;
  color: #2e4f62;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.nav-icon {
  display: none;
  line-height: 1;
}

.nav-btn.is-active {
  background: linear-gradient(120deg, var(--accent), var(--accent-strong));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 7px 16px rgba(15, 118, 115, 0.24);
}

.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;
}

/* Workspace switcher */
.workspace-switcher {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid #e7f0ee;
}
.workspace-switcher select {
  flex: 1;
  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;
}

/* Create workspace modal */
.ws-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(28, 42, 56, 0.45);
  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-radius: 16px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.18);
  padding: 24px;
  width: min(440px, 90vw);
  max-height: 80vh;
  overflow: auto;
}
.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; }

/* Global toast notification */
.global-toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-80px);
  background: linear-gradient(135deg, #1c2a38, #2e4252);
  color: #fff;
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(0,0,0,0.18);
  z-index: 9999;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  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;
  }
}