/**
 * SGE 文案助手 - Layout
 * App Container & Main Content Structure
 */

/* ========================================
   App Container & Layout
   ======================================== */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border-light);
  height: var(--header-height);
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-section {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.app-title {
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.app-subtitle {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

hello-ruru-header {
  display: block;
  margin-bottom: 28px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* View Mode Toggle */
.view-toggle {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
}

.toggle-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.toggle-btn svg {
  flex-shrink: 0;
}

.toggle-btn:hover {
  background: rgba(212, 165, 165, 0.1);
  color: var(--color-text-body);
}

.toggle-btn.active {
  background: var(--gradient-primary);
  color: #FFFFFF;
  box-shadow: 0 2px 4px rgba(212, 165, 165, 0.2);
}

.toggle-btn.active svg {
  color: #FFFFFF;
}

/* Main Content */
.main-content {
  flex: 1;
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: var(--panel-gap);
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-lg);
  width: 100%;
}

/* Panels */
.panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.panel-left {
  position: sticky;
  top: calc(var(--header-height) + var(--space-md));
  max-height: calc(100vh - var(--header-height) - var(--space-xl));
  overflow-y: auto;
  padding-right: var(--space-sm);
  align-self: start;
}

.panel-left::-webkit-scrollbar {
  width: 6px;
}

.panel-left::-webkit-scrollbar-track {
  background: transparent;
}

.panel-left::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

.panel-right {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* Footer */
.app-footer {
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border-light);
  padding: var(--space-lg) 0;
  text-align: center;
}

.app-footer p {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer-art-notice {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: var(--space-xs);
}