/* ============================================================================
   APP-LAYOUT.CSS - App Grid Layout System
   Grid layout with TopNav, Main Content, and Footer
   ============================================================================ */

/* ============================================================================
   APP LAYOUT GRID
   3-row grid: TopNav (56px) | Content (auto) | Footer (32px)
   ============================================================================ */
.app-layout {
  --app-bottom-ui-height: var(--footer-height);
  display: grid;
  grid-template-rows: var(--topnav-height) 1fr var(--footer-height);
  min-height: 100vh;
  min-height: 100dvh; /* Dynamic viewport for mobile Safari */
  background-color: var(--bg-primary);
}

/* ============================================================================
   GRID SYSTEM - Fill All Gaps
   ============================================================================ */

/* Page grid - fills viewport height properly */
.page-grid {
  display: grid;
  gap: var(--space-2);
  height: calc(
    100vh - var(--topnav-height) - var(--app-bottom-ui-height) - var(--space-6)
  );
  padding: var(--space-3);
  min-height: 0; /* Important for nested grids */
}

/* Common layouts */
.page-grid--sidebar-right {
  grid-template-columns: 1fr 340px;
}

.page-grid--sidebar-left {
  grid-template-columns: 340px 1fr;
}

.page-grid--2-col {
  grid-template-columns: repeat(2, 1fr);
}

.page-grid--3-col {
  grid-template-columns: repeat(3, 1fr);
}

/* Grid items that fill available space */
.grid-item {
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.grid-item-header {
  padding: var(--space-3);
  border-bottom: 1px solid var(--border-default);
  flex-shrink: 0;
}

.grid-item-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: var(--space-3);
}

/* Zero padding when table is direct child of grid-item-body */
.grid-item-body:has(> .data-table) {
  padding: 0;
}

.grid-item-footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border-default);
  flex-shrink: 0;
}

/* Empty state for grid items */
.grid-item-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  text-align: center;
  color: var(--text-muted);
  flex: 1;
}

.grid-item-empty [data-lucide] {
  width: 3rem;
  height: 3rem;
  margin-bottom: var(--space-4);
  opacity: 0.4;
}

.grid-item-empty-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.grid-item-empty-text {
  font-size: var(--text-sm);
  color: var(--text-muted);
  max-width: 20rem;
}

/* Responsive grid */
@media (max-width: 1024px) {
  .page-grid--sidebar-right,
  .page-grid--sidebar-left,
  .page-grid--2-col,
  .page-grid--3-col {
    grid-template-columns: 1fr;
    height: auto;
    min-height: calc(
      100vh - var(--topnav-height) - var(--app-bottom-ui-height) -
        var(--space-8)
    );
  }
}

/* ============================================================================
   TOP NAVIGATION
   ============================================================================ */
.app-topnav {
  grid-row: 1;
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2px var(--space-4) 0 var(--space-4);
  background-color: var(--bg-elevated);
  border-bottom: 1px solid var(--border-default);
  height: var(--topnav-height);
}

/* Brand/Logo */
.topnav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.topnav-brand-logo {
  height: 2.1rem;
  width: auto;
}

.topnav-brand-text {
  font-family: var(--font-brand);
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

/* Navigation Links Container */
.topnav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-left: var(--space-6);
}

.topnav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--duration-normal) var(--ease-default);
  white-space: nowrap;
}

.topnav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-hover);
}

.topnav-link.active {
  color: var(--text-primary);
  background-color: var(--bg-hover);
}

.topnav-link svg,
.topnav-link [data-lucide] {
  width: 18px;
  height: 18px;
  stroke-width: 1.5;
  color: var(--accent);
}

/* Navigation spacer/divider */
.topnav-divider {
  width: 1px;
  height: 24px;
  background-color: var(--border-default);
  margin: 0 var(--space-2);
}

/* Right section (actions/user) */
.topnav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
}

/* Icon buttons in topnav */
.topnav-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--duration-normal);
}

.topnav-icon-btn:hover {
  color: var(--text-primary);
  background-color: var(--bg-hover);
  border-color: var(--border-default);
}

.topnav-icon-btn svg,
.topnav-icon-btn [data-lucide] {
  width: 18px;
  height: 18px;
  stroke-width: 1.5;
}

/* User menu trigger */
.topnav-user {
  position: relative;
}

.topnav-user-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2) var(--space-1) var(--space-1);
  background-color: var(--bg-deep);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration-normal);
}

.topnav-user-trigger:hover {
  border-color: var(--border-hover);
  background-color: var(--bg-hover);
}

.topnav-user-avatar {
  width: 1.75rem;
  height: 1.75rem;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: var(--text-xs);
}

.topnav-user-name {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topnav-user-chevron {
  width: 14px;
  height: 14px;
  color: var(--text-muted);
  transition: transform var(--duration-normal);
}

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

/* User dropdown */
.topnav-user-dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  min-width: 220px;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-dropdown);
  padding: var(--space-1);
  display: none;
  z-index: var(--z-dropdown);
}

.topnav-user-dropdown.active {
  display: block;
  animation: dropdown-in var(--duration-normal) var(--ease-out);
}

.topnav-user-header {
  padding: var(--space-3);
  border-bottom: 1px solid var(--border-default);
  margin-bottom: var(--space-1);
}

.topnav-user-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.topnav-user-info .avatar {
  width: 2.5rem;
  height: 2.5rem;
}

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

.topnav-user-fullname {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topnav-user-tier {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: 2px;
}

/* Mobile menu toggle */
.topnav-mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  background: transparent;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--duration-normal);
}

.topnav-mobile-toggle:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.topnav-mobile-toggle svg,
.topnav-mobile-toggle [data-lucide] {
  width: 20px;
  height: 20px;
}

/* ============================================================================
   MAIN CONTENT AREA
   ============================================================================ */
.app-main {
  grid-row: 2;
  overflow-y: auto;
  background-color: var(--bg-primary);
}

/* Content wrapper for max-width */
.app-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-6);
}

.app-content-wide {
  max-width: var(--container-wide);
}

.app-content-full {
  max-width: none;
  padding: 0;
}

/* ============================================================================
   FOOTER (Sticky at bottom)
   ============================================================================ */
.app-footer {
  grid-row: 3;
  position: sticky;
  bottom: 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  background-color: var(--bg-elevated);
  border-top: 1px solid var(--border-default);
  height: var(--footer-height);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.footer-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.footer-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Connection status */
.footer-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer-status-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background-color: var(--text-muted);
}

.footer-status-dot.connected {
  background-color: var(--success);
  box-shadow: 0 0 4px var(--success);
}

.footer-status-dot.disconnected {
  background-color: var(--error);
}

.footer-status-dot.connecting {
  background-color: var(--warning);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Footer info items */
.footer-info {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.footer-info-label {
  color: var(--text-muted);
}

.footer-info-value {
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* Footer divider */
.footer-divider {
  width: 1px;
  height: 12px;
  background-color: var(--border-default);
}

/* Footer time display */
.footer-time {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

/* ============================================================================
   MOBILE NAVIGATION PANEL
   ============================================================================ */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--duration-slow),
    visibility var(--duration-slow);
}

.mobile-nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-panel {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 280px;
  max-width: 85vw;
  background-color: var(--bg-elevated);
  border-right: 1px solid var(--border-default);
  z-index: var(--z-modal);
  transform: translateX(-100%);
  transition: transform var(--duration-slower) var(--ease-spring);
  display: flex;
  flex-direction: column;
}

.mobile-nav-panel.active {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  border-bottom: 1px solid var(--border-default);
}

.mobile-nav-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
}

.mobile-nav-close:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.mobile-nav-links {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4);
}

.mobile-nav-section {
  margin-bottom: var(--space-6);
}

.mobile-nav-section-title {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0 var(--space-3);
  margin-bottom: var(--space-2);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--duration-normal);
}

.mobile-nav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-hover);
}

.mobile-nav-link.active {
  color: var(--text-primary);
  background-color: var(--bg-hover);
}

.mobile-nav-link svg,
.mobile-nav-link [data-lucide] {
  width: 20px;
  height: 20px;
  color: var(--text-secondary);
  stroke: var(--text-secondary);
  opacity: 1;
}

.mobile-nav-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--border-default);
}

/* ============================================================================
   RESPONSIVE STYLES
   ============================================================================ */

/* Tablet and below */
@media (max-width: 1024px) {
  .topnav-links {
    display: none;
  }

  .topnav-mobile-toggle {
    display: flex;
    margin-right: var(--space-2);
  }

  .topnav-user-name {
    display: none;
  }

  .topnav-brand-logo {
    height: 2.4rem;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .app-topnav {
    padding: 0 var(--space-3);
  }

  .topnav-brand-text {
    display: none;
  }

  .topnav-actions {
    gap: var(--space-1);
  }

  .app-content {
    padding: var(--space-4);
  }

  .app-content.app-content-full {
    padding: 0;
  }

  .app-footer {
    padding: 0 var(--space-3);
    font-size: 10px;
  }

  .footer-info {
    display: none;
  }

  .footer-divider {
    display: none;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  .topnav-icon-btn:not(.topnav-mobile-toggle) {
    display: none;
  }

  .footer-right {
    display: none;
  }
}

/* ============================================================================
   AUTH BUTTONS (for logged out state)
   ============================================================================ */
.topnav-auth {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.topnav-auth .btn {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-sm);
}

/* ============================================================================
   PAGE-SPECIFIC CONTENT WIDTHS
   ============================================================================ */
.app-content--terminal {
  max-width: none;
  padding: var(--space-4);
}

.app-content--signals {
  max-width: 1400px;
}

.app-content--settings {
  max-width: 800px;
}

/* ============================================================================
   MOBILE BOTTOM NAVIGATION — shadcn-inspired
   ============================================================================ */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  min-height: var(--mobile-bottom-nav-height);
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-default);
  z-index: var(--z-sticky);
  padding: 6px var(--space-2)
    calc(env(safe-area-inset-bottom, 0) + 4px);
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 4px var(--space-2);
  font-size: 10px;
  font-weight: var(--font-medium);
  color: var(--text-muted);
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-default);
  min-width: 0;
  flex: 1;
  position: relative;
}

.bottom-nav-icon {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-md);
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast) var(--ease-default);
}

.bottom-nav-icon [data-lucide] {
  width: 18px;
  height: 18px;
  stroke-width: 1.5;
  color: var(--text-muted);
  transition:
    color var(--duration-fast) var(--ease-default),
    stroke-width var(--duration-fast) var(--ease-default);
}

.bottom-nav-label {
  line-height: 1;
  letter-spacing: 0.01em;
}

.bottom-nav-item:hover {
  color: var(--text-secondary);
}

.bottom-nav-item:hover .bottom-nav-icon {
  background: var(--bg-hover);
}

.bottom-nav-item:hover .bottom-nav-icon [data-lucide] {
  color: var(--text-secondary);
}

.bottom-nav-item:active {
  transform: scale(0.96);
}

.bottom-nav-item:focus-visible {
  outline: none;
}

.bottom-nav-item:focus-visible .bottom-nav-icon {
  box-shadow: 0 0 0 2px var(--accent-glow);
}

/* Active state: accent-tinted pill background + accent icon */
.bottom-nav-item.active {
  color: var(--accent);
}

.bottom-nav-item.active .bottom-nav-icon {
  background: var(--accent-muted);
}

.bottom-nav-item.active .bottom-nav-icon [data-lucide] {
  color: var(--accent);
  stroke-width: 1.8;
}

/* Mobile connection status in topnav */
.topnav-mobile-status {
  display: none;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.topnav-mobile-status .footer-status-dot {
  width: 5px;
  height: 5px;
}

/* Show bottom nav on mobile, hide footer */
@media (max-width: 1024px) {
  .app-layout {
    --app-bottom-ui-height: calc(
      var(--mobile-bottom-nav-height) + env(safe-area-inset-bottom, 0)
    );
  }

  .mobile-bottom-nav {
    display: flex;
    justify-content: space-between;
    gap: var(--space-1);
  }

  .app-footer {
    display: none;
  }

  .topnav-mobile-status {
    display: flex;
  }

  .app-layout {
    grid-template-rows: var(--topnav-height) 1fr;
  }

  .app-main {
    height: calc(100dvh - var(--topnav-height) - var(--app-bottom-ui-height));
    max-height: calc(
      100dvh - var(--topnav-height) - var(--app-bottom-ui-height)
    );
    /* padding-bottom: var(--space-1); */
  }
}