/* ==========================================================================
   Layout Styles - Header, View Containers & Enterprise App Shell
   ========================================================================== */

.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

/* --------------------------------------------------------------------------
   Header Component - No Separate Background, Just Line Separator
   Height matching Pill Dock (56px PC / 54px Mobile)
   -------------------------------------------------------------------------- */
.app-header {
  position: relative;
  z-index: 50;
  width: 100%;
  height: var(--header-height);
  background: transparent;
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color var(--transition-normal);
}

.header-inner {
  max-width: 1200px;
  width: 100%;
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-sizing: border-box;
}

/* Left: Company Branding */
.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  user-select: none;
}

.brand-name {
  font-family: var(--font-brand);
  font-size: 1.25rem; /* 20px - Bigger font size */
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-primary);
  transition: color var(--transition-normal);
  white-space: nowrap;
  line-height: 1;
}

/* Right: User Section & Controls */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Theme Toggler */
.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  border: none;
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  position: relative;
  cursor: pointer;
  outline: none;
}

.theme-toggle-btn:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.theme-icon {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-spring);
}

.theme-toggle-btn:hover .theme-icon {
  transform: rotate(15deg);
}

/* User Initials Avatar (Single Clean Circle - No Outer Box/Card) */
.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  border: none;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.02em;
  user-select: none;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  cursor: pointer;
}

.user-avatar:hover {
  background-color: var(--bg-tertiary);
  transform: scale(1.04);
}

.user-avatar svg {
  width: 16px;
  height: 16px;
}

/* --------------------------------------------------------------------------
   Main Content & Single Page View Switching
   -------------------------------------------------------------------------- */
.main-viewport {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 12px var(--space-6);
  padding-bottom: calc(var(--dock-height) + var(--space-12) + env(safe-area-inset-bottom, 0px));
  position: relative;
}

/* Views wrapper */
.view-panel {
  display: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.view-panel.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* Minimal enterprise view header & placeholder framing */
.view-header {
  margin-bottom: var(--space-6);
}

.view-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.view-subtitle {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.view-placeholder-box {
  margin-top: var(--space-6);
  padding: var(--space-10) var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border-strong);
  background-color: var(--bg-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-2);
}

.placeholder-badge {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  background-color: var(--bg-tertiary);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  margin-bottom: var(--space-2);
}

.placeholder-title {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.placeholder-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  max-width: 440px;
}

.upload-trigger-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  background-color: var(--text-primary);
  color: var(--text-inverted);
  border: 1px solid var(--text-primary);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  outline: none;
}

.upload-trigger-btn:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
}

.upload-trigger-btn:active {
  transform: scale(0.98);
}

.upload-trigger-icon {
  width: 16px;
  height: 16px;
}

/* Quick feedback toast container */
.toast-notice {
  position: fixed;
  top: calc(var(--header-height) + var(--space-4));
  right: var(--space-6);
  z-index: var(--z-toast, 99999);
  padding: var(--space-3) var(--space-4);
  background-color: var(--text-primary);
  color: var(--text-inverted);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.toast-notice.show {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Responsive Adaptations
   -------------------------------------------------------------------------- */
@media (max-width: 600px) {
  .app-header {
    height: 61px;
  }

  .header-inner {
    padding: 0 var(--space-4);
  }

  .brand-name {
    font-size: 1.05rem; /* ~17px on mobile screens */
    letter-spacing: 0.05em;
  }

  .main-viewport {
    padding: 12px var(--space-4);
    padding-bottom: calc(var(--dock-height) + var(--space-10) + env(safe-area-inset-bottom, 0px));
  }
}

/* --------------------------------------------------------------------------
   Dynamic Data Skeleton Shimmer (No Hardcoding)
   -------------------------------------------------------------------------- */
.brand-name:empty {
  display: inline-block;
  min-width: 72px;
  height: 14px;
  border-radius: var(--radius-sm);
  background-color: var(--border-subtle);
  animation: pulse-shimmer 1.5s ease-in-out infinite;
}

.user-avatar:empty {
  background-color: var(--border-subtle);
  animation: pulse-shimmer 1.5s ease-in-out infinite;
}

.view-title:empty {
  display: inline-block;
  min-width: 140px;
  height: 28px;
  border-radius: var(--radius-sm);
  background-color: var(--border-subtle);
  animation: pulse-shimmer 1.5s ease-in-out infinite;
}

.view-subtitle:empty {
  display: inline-block;
  min-width: 200px;
  height: 14px;
  border-radius: var(--radius-sm);
  background-color: var(--border-subtle);
  animation: pulse-shimmer 1.5s ease-in-out infinite;
}

@keyframes pulse-shimmer {

  0%,
  100% {
    opacity: 0.4;
  }

  50% {
    opacity: 0.8;
  }
}