/* ═══════════════════════════════════════════════
   mini task ai — Main Layout
   ═══════════════════════════════════════════════ */

/* ── App Shell ── */
.app {
  display: flex;
  min-height: 100vh;
  background: var(--bg-base);
  position: relative;
}

/* ── Header ── */
.app-header {
  position: fixed;
  top: 0;
  left: var(--sidebar-width);
  right: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  background: rgba(10, 7, 24, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
  transition: left var(--duration-slow) var(--ease-smooth);
}
.sidebar-collapsed .app-header {
  left: var(--sidebar-width-collapsed);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.header-center {
  flex: 1;
  max-width: 480px;
  margin: 0 var(--space-6);
}
.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* ── Logo ── */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  transition: opacity var(--duration-fast) var(--ease-smooth);
}
.logo:hover { opacity: 0.8; }
.logo svg {
  width: 32px;
  height: 32px;
  animation: float 4s ease-in-out infinite;
}
.logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--text-primary);
  letter-spacing: -0.03em;
}
.logo-text span {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* AI Status */
.ai-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  color: var(--accent-emerald);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
}
.ai-status:hover {
  background: rgba(16, 185, 129, 0.15);
}
.ai-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-emerald);
  animation: pulse-dot 2s ease-in-out infinite;
}

/* Search Trigger */
.search-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: var(--text-sm);
  cursor: pointer;
  width: 100%;
  transition: all var(--duration-fast) var(--ease-smooth);
}
.search-trigger:hover {
  border-color: var(--border-default);
  background: var(--bg-hover);
}
.search-trigger kbd {
  margin-left: auto;
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

/* Header Icons */
.header-icon-btn {
  position: relative;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
}
.header-icon-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.header-icon-btn .badge-count {
  position: absolute;
  top: 2px;
  right: 2px;
}

/* User Avatar */
.user-menu {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-smooth);
}
.user-menu:hover {
  background: var(--bg-hover);
}
.user-menu .avatar {
  background: var(--gradient-primary);
}

/* ── Sidebar ── */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  z-index: 200;
  transition: width var(--duration-slow) var(--ease-smooth);
  overflow: hidden;
}
.sidebar-collapsed .sidebar {
  width: var(--sidebar-width-collapsed);
}

/* ── Main Content ── */
.main-wrapper {
  flex: 1;
  margin-left: var(--sidebar-width);
  margin-top: var(--header-height);
  transition: margin-left var(--duration-slow) var(--ease-smooth);
  min-height: calc(100vh - var(--header-height));
}
.sidebar-collapsed .main-wrapper {
  margin-left: var(--sidebar-width-collapsed);
}
body.hide-sidebar-auth .sidebar, body.hide-sidebar-auth .app-header {
  display: none !important;
}
body.hide-sidebar-auth .main-wrapper {
  margin-left: 0;
  margin-top: 0;
  min-height: 100vh;
}

.main-content {
  padding: var(--space-6);
  max-width: 1400px;
  width: 100%;
  animation: fadeIn var(--duration-slow) var(--ease-smooth);
}

/* ── Page Transitions ── */
.page-enter {
  animation: slideUp var(--duration-enter) var(--ease-spring) both;
}

/* ── AI Panel (Right) ── */
.ai-panel {
  position: fixed;
  top: var(--header-height);
  right: 0;
  bottom: 0;
  width: var(--panel-width);
  background: var(--bg-surface);
  border-left: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  z-index: 150;
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-smooth);
}
.ai-panel.open {
  transform: translateX(0);
}
.ai-panel-open .main-content {
  margin-right: var(--panel-width);
}

/* ── Task Detail Panel (Right) ── */
.task-detail-panel {
  position: fixed;
  top: var(--header-height);
  right: 0;
  bottom: 0;
  width: 520px;
  max-width: 90vw;
  background: var(--bg-surface);
  border-left: 1px solid var(--border-default);
  box-shadow: -8px 0 32px rgba(0,0,0,0.4);
  z-index: 300;
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-smooth);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.task-detail-panel.open {
  transform: translateX(0);
}

/* ── Notification Panel ── */
.notification-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 380px;
  max-height: 480px;
  background: var(--bg-overlay);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-elevated);
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--duration-fast) var(--ease-smooth);
  z-index: 1000;
}
.notification-panel.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.notification-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
}
.notification-list {
  max-height: 380px;
  overflow-y: auto;
}
.notification-item {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-smooth);
}
.notification-item:hover { background: var(--bg-hover); }
.notification-item.unread { background: rgba(124, 58, 237, 0.05); }

/* ── Particles Canvas ── */
#particles-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ── Page-specific wrappers ── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-3);
}
.page-header h1 {
  font-size: var(--text-3xl);
}
.page-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}