/* ═══════════════════════════════════════════
   LAYOUT.CSS — App Shell, Sidebar, Nav
   ═══════════════════════════════════════════ */

/* ── App Shell ── */
#app {
  display: flex;
  min-height: 100vh;
}

#main {
  margin-left: 220px;
  flex: 1;
  padding: 2rem;
  padding-top: 1rem;
  min-height: 100vh;
}

/* ── Sidebar ── */
#sidebar {
  width: 220px;
  min-height: 100vh;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  z-index: 100;
}

/* ── Logo ── */
.sidebar-logo {
  padding: 1.25rem 1rem 0.85rem;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.logo-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 100%;
  overflow: hidden;
}

.logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.logo-icon img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  object-fit: cover;
  display: block;
}

.logo-text {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.3px;
  color: var(--text);
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 135px;
}

.logo-text span {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0px;
  margin-top: 1px;
}

.logo-sub {
  font-size: 10px;
  color: var(--text3);
  font-family: var(--mono);
  margin-top: 2px;
  letter-spacing: 0.5px;
}

/* ── Nav ── */
.nav-section {
  padding: 1rem 0;
  flex: 1;
  overflow-y: auto;
}

.nav-label {
  font-size: 10px;
  font-family: var(--mono);
  color: var(--text3);
  padding: 0 1.25rem 0.5rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0.6rem 1.25rem;
  cursor: pointer;
  color: var(--text2);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s;
  border-left: 2px solid transparent;
  text-decoration: none;
}

.nav-item:hover {
  color: var(--text);
  background: rgba(61, 154, 255, 0.05);
  text-decoration: none;
}

.nav-item.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(61, 154, 255, 0.07);
}

.nav-item svg {
  width: 15px;
  height: 15px;
  opacity: 0.7;
  flex-shrink: 0;
}

.nav-item.active svg {
  opacity: 1;
}

/* ── Sidebar Footer / User Chip ── */
.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border);
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius);
  transition: background 0.15s;
  text-decoration: none;
}

.user-chip:hover { background: var(--bg3); }

.user-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--teal));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.user-name  { font-size: 12px; font-weight: 600; color: var(--text); }
.user-email { font-size: 10px; color: var(--text3); font-family: var(--mono); }

/* ── Topbar ── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.75rem 0.6rem 0;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  gap: 1rem;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.sidebar-toggle-btn {
  background: transparent;
  border: none;
  color: var(--text2);
  cursor: pointer;
  padding: 0.4rem;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}
.sidebar-toggle-btn:hover {
  background: var(--bg3);
  color: var(--text);
}

.topbar-breadcrumb {
  font-size: 11px;
  color: var(--text3);
  font-family: var(--mono);
  letter-spacing: 0.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar-breadcrumb span { color: var(--accent); }

/* Three-dot menu button */
.topbar-menu-btn {
  background: transparent;
  border: none;
  color: var(--text2);
  cursor: pointer;
  padding: 0.4rem;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}
.topbar-menu-btn:hover {
  background: var(--bg3);
  color: var(--text);
}

.topbar-menu-wrapper {
  position: relative;
}

.topbar-menu-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 200px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 32px rgba(0,0,0,0.4);
  padding: 6px;
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 200;
  backdrop-filter: blur(12px);
}
.topbar-menu-dropdown.show {
  display: flex;
}

.topbar-menu-dropdown .dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text2);
  background: transparent;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  width: 100%;
  text-align: left;
  transition: background 0.15s, color 0.15s;
  font-family: inherit;
}
.topbar-menu-dropdown .dropdown-item:hover {
  background: var(--bg3);
  color: var(--text);
}
.topbar-menu-dropdown .dropdown-item.danger {
  color: var(--red);
}
.topbar-menu-dropdown .dropdown-item.danger:hover {
  background: var(--red-bg);
  color: var(--red);
}
.topbar-menu-dropdown .dropdown-item svg {
  flex-shrink: 0;
  opacity: 0.7;
}
.topbar-menu-dropdown .dropdown-item:hover svg,
.topbar-menu-dropdown .dropdown-item.danger svg {
  opacity: 1;
}

.topbar-divider {
  height: 1px;
  background: var(--border);
  margin: 4px 0;
}

/* ── Page Header ── */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.page-header h1 {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text);
}

.page-header p {
  font-size: 13px;
  color: var(--text2);
  margin-top: 4px;
}

.breadcrumb {
  font-size: 11px;
  color: var(--text3);
  font-family: var(--mono);
  margin-bottom: 0.5rem;
}

.breadcrumb span { color: var(--accent); }

/* ── Two-column content grids ── */
.col-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.col-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
}

.col-sidebar {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 1.5rem;
}

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text3);
}

.empty-icon {
  font-size: 40px;
  margin-bottom: 1rem;
}

.empty-state h3 {
  font-size: 16px;
  color: var(--text2);
  margin-bottom: 0.5rem;
}

.empty-state p {
  font-size: 13px;
}

/* ── Auth page layout ── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
}

.auth-box {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 20px;
  padding: 2.5rem;
  width: 420px;
  max-width: 95vw;
}

/* ── Premium Neumorphic Day/Night Theme Switch ── */
.theme-switch {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  user-select: none;
  padding: 4px;
  flex-shrink: 0;
}

.theme-switch-track {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 140px;
  height: 38px;
  border-radius: 19px;
  padding: 0 10px;
  background: var(--bg3, #f3f4f6);
  border: 1px solid var(--border);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.06);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-switch-label {
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.8px;
  z-index: 2;
  transition: color 0.3s ease;
  pointer-events: none;
  font-family: inherit;
}

.theme-switch-label.label-left {
  color: var(--accent, #2563eb);
}

.theme-switch-label.label-right {
  color: var(--text3, #9ca3af);
}

.theme-switch-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--bg2, #ffffff);
  box-shadow: 0 3px 8px rgba(0,0,0,0.12), 0 1px 3px rgba(0,0,0,0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.3s ease;
}

.theme-switch-thumb svg {
  position: absolute;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.theme-switch-thumb .sun-icon {
  opacity: 1;
  transform: rotate(0);
  color: #ff9f0a;
}

.theme-switch-thumb .moon-icon {
  opacity: 0;
  transform: rotate(-45deg);
  color: #9898ed;
}

[data-theme="dark"] .theme-switch-track {
  background: #0f1016;
  border-color: rgba(255,255,255,0.06);
  box-shadow: inset 0 2px 5px rgba(0,0,0,0.4);
}

[data-theme="dark"] .theme-switch-thumb {
  transform: translateX(104px);
  background: #1e1f29;
  box-shadow: 0 4px 10px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.05);
}

[data-theme="dark"] .theme-switch-thumb .sun-icon {
  opacity: 0;
  transform: rotate(45deg);
}

[data-theme="dark"] .theme-switch-thumb .moon-icon {
  opacity: 1;
  transform: rotate(0);
  color: #5e5ce6;
}

[data-theme="dark"] .theme-switch-label.label-left {
  color: var(--text3, #9ca3af);
}

[data-theme="dark"] .theme-switch-label.label-right {
  color: #5e5ce6;
}

.theme-switch:focus-visible {
  outline: none;
}
.theme-switch:focus-visible .theme-switch-track {
  outline: 2px solid var(--accent, #2563eb);
  outline-offset: 2px;
}