/**
 * BannerCast - Layout
 * App structure: social-bar, header, middle (sidebar + main-wrapper), footer
 * 
 * KLUCZOWA ZASADA: Tylko .app-content scrolluje
 * Wszystkie inne elementy mają fixed height i są zawsze widoczne
 * 
 * Breakpoints:
 * - Mobile: < 768px (default)
 * - Tablet: 768px - 1023px
 * - Desktop: >= 1024px
 */

/* ================================
   HTML/BODY - Zapobiega scrollowaniu całej strony
   ================================ */

html, body {
  height: 100%;
  overflow: hidden;
}

/* ================================
   APP LAYOUT STRUCTURE
   ================================ */

.app-layout {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh; /* Fallback dla mobile */
  overflow: hidden;
  background: var(--gradient-bg);
}

/* ================================
   SOCIAL BAR - fixed height
   ================================ */

.app-social-bar {
  flex-shrink: 0;
  height: 32px;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 var(--spacing-md);
  border-bottom: 1px solid var(--color-border-light);
}

.app-social-links {
  display: flex;
  align-items: center;
  gap: 14px;
}

.app-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.app-social-link svg {
  width: 20px;
  height: 20px;
}

.app-social-link:hover {
  color: var(--color-primary);
  transform: scale(1.1);
}

.app-social-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ================================
   HEADER - fixed height
   ================================ */

.app-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  padding: 0 var(--spacing-md);
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  gap: var(--spacing-sm);
}

/* Left section - Logo (always visible) */
.app-header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

/* Right section - Actions + Language */
.app-header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  flex-shrink: 0;
}

/* Logo */
.app-header-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  border-radius: var(--radius-md);
  padding: var(--spacing-xs);
  margin: calc(-1 * var(--spacing-xs));
  transition: transform var(--transition-fast), filter var(--transition-fast);
}

.app-header-logo:hover {
  transform: scale(1.02);
  filter: brightness(1.1);
}

.app-header-logo:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.app-header-logo:active {
  transform: scale(0.98);
}

.app-header-logo-icon-svg {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.app-header-logo-text {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-wide);
  white-space: nowrap;
}

.app-header-logo-text span {
  color: var(--color-primary);
}

/* Header actions */
.app-header-actions {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: nowrap;
}

/* Action buttons - mobile: icon only */
.app-header-actions .btn {
  padding: var(--spacing-xs);
  min-width: auto;
  white-space: nowrap;
}

.app-header-actions .btn span {
  display: none;
}

/* Theme toggle button */
#theme-toggle {
  position: relative;
  width: 38px;
  height: 38px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: opacity var(--transition-fast);
}

[data-theme="light"] .theme-icon--dark {
  opacity: 0;
}

[data-theme="dark"] .theme-icon--light {
  opacity: 0;
}

/* Language selector */
.app-language-select {
  position: relative;
}

.app-language-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.app-language-btn:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-hover);
}

/* Mobile: hide logo text on very small screens */
@media (max-width: 479px) {
  .app-header-logo-text {
    display: none;
  }
  
  .app-header {
    gap: var(--spacing-xs);
  }
}

/* Tablet (768px - 1023px): show button text */
@media (min-width: 768px) {
  .app-header {
    gap: var(--spacing-md);
  }
  
  .app-header-actions .btn {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .app-header-actions .btn span {
    display: inline;
  }
  
  .app-header-right {
    gap: var(--spacing-sm);
  }
}

/* Desktop (>=1024px): show button text and adjust spacing */
@media (min-width: 1024px) {
  .app-header {
    gap: var(--spacing-lg);
  }
  
  .app-header-right {
    gap: var(--spacing-md);
  }
}

/* ================================
   MIDDLE SECTION (Sidebar + Main Wrapper)
   Zajmuje całą pozostałą przestrzeń
   ================================ */

.app-middle {
  flex: 1;
  display: flex;
  overflow: hidden;
  min-height: 0; /* KLUCZOWE dla flexbox! */
}

/* ================================
   SIDEBAR - fixed width, własny scroll
   ================================ */

.app-sidebar {
  width: 200px;
  flex-shrink: 0;
  background: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border);
  display: none; /* Ukryty na mobile/tablet */
  flex-direction: column;
  overflow: hidden; /* Sidebar sam się nie scrolluje */
  height: 100%; /* Zajmuje całą wysokość app-middle */
}

.sidebar-nav {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
}

.sidebar-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
  position: relative;
}

.sidebar-nav-item:hover {
  background: var(--color-bg-hover);
  color: var(--color-text);
}

.sidebar-nav-item.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--glow-primary);
}

.sidebar-nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.sidebar-nav-badge {
  position: absolute;
  right: var(--spacing-sm);
  min-width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  background: var(--color-secondary);
  color: var(--color-text);
  border-radius: var(--radius-full);
  padding: 0 6px;
}

.sidebar-nav-item.active .sidebar-nav-badge {
  background: var(--color-text-inverse);
  color: var(--color-primary);
}

.sidebar-footer {
  flex-shrink: 0;
  padding: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

@media (min-width: 1024px) {
  .app-sidebar {
    display: flex;
  }
}

/* ================================
   MAIN WRAPPER - zawiera preview + content
   ================================ */

.app-main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0; /* Pozwala się kurczyć */
  min-height: 0; /* KLUCZOWE! */
}

/* ================================
   PREVIEW - fixed height, nie scrolluje
   ================================ */

.app-preview {
  flex-shrink: 0; /* Nie kurczy się */
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md);
}

.app-preview-stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.app-preview-stats strong {
  color: var(--color-primary);
}

/* ================================
   MAIN - scrollable area
   ================================ */

.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0; /* KLUCZOWE! */
}

/* ================================
   CONTENT - JEDYNY SCROLLOWALNY ELEMENT
   ================================ */

.app-content {
  flex: 1;
  padding: var(--spacing-lg);
  overflow-y: auto; /* TYLKO TO SCROLLUJE */
  overflow-x: hidden; /* Zapobiega poziomemu scrollowi */
  min-height: 0; /* KLUCZOWE! */
  -webkit-overflow-scrolling: touch; /* Smooth scroll na iOS */
}

/* Mobile padding adjustment */
@media (max-width: 767px) {
  .app-content {
    padding: var(--spacing-md);
  }
}

/* Page sections */
.page {
  max-width: 1200px;
  margin: 0 auto;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-lg);
  gap: var(--spacing-md);
}

.page-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xs);
}

/* Content grids - mobile first (single column) */
.content-grid-2,
.content-grid-3,
.content-grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

/* Card grid (theme presets etc.) */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--spacing-sm);
}

/* ================================
   FOOTER - fixed height
   ================================ */

.app-footer {
  flex-shrink: 0;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-md);
}

.app-footer-content {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Mobile/Tablet: padding dla bottom nav */
@media (max-width: 1023px) {
  .app-footer {
    padding-bottom: calc(var(--spacing-md) + 70px);
  }
}

/* ================================
   BOTTOM NAVIGATION - mobile/tablet
   ================================ */

.app-bottom-nav {
  display: flex;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  z-index: var(--z-sticky);
  padding: var(--spacing-xs) 0;
  padding-bottom: max(var(--spacing-xs), env(safe-area-inset-bottom));
}

@media (min-width: 1024px) {
  .app-bottom-nav {
    display: none;
  }
}

.app-bottom-nav-list {
  display: flex;
  justify-content: space-around;
  align-items: center;
  width: 100%;
}

.app-bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  transition: all var(--transition-fast);
  min-width: 60px;
}

.app-bottom-nav-item svg {
  width: 24px;
  height: 24px;
}

.app-bottom-nav-item.active {
  color: var(--color-primary);
}

.app-bottom-nav-icon-wrapper {
  position: relative;
}

.app-bottom-nav .nav-badge {
  position: absolute;
  top: -6px;
  right: -8px;
  min-width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  background: var(--color-secondary);
  color: var(--color-text);
  border-radius: var(--radius-full);
  padding: 0 4px;
}

.app-bottom-nav .nav-badge[data-count="0"] {
  display: none;
}

/* ================================
   TABLET BREAKPOINT (768px - 1023px)
   ================================ */

@media (min-width: 768px) {
  .content-grid-2,
  .content-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .content-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ================================
   DESKTOP BREAKPOINT (>= 1024px)
   ================================ */

@media (min-width: 1024px) {
  /* Footer - remove bottom nav padding on desktop */
  .app-footer {
    padding-bottom: var(--spacing-md);
  }
  
  /* Content grids - multi column on desktop */
  .content-grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .content-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ================================
   LARGE DESKTOP (>= 1200px)
   ================================ */

@media (min-width: 1200px) {
  .content-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ================================
   THEME SELECTOR DROPDOWN
   ================================ */

.theme-selector-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.theme-selector {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  
  font-size: 14px;
  font-family: var(--font-family);
  font-weight: 500;
  
  padding: 8px 32px 8px 12px;
  
  cursor: pointer;
  transition: all var(--transition-fast);
  
  /* Custom arrow */
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 12 12' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M2 4L6 8L10 4' stroke='%23A5A5B5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 12px;
}

.theme-selector:hover {
  background: var(--color-bg-card);
  border-color: var(--color-border-strong);
}

.theme-selector:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.theme-selector option {
  background: var(--color-bg-card);
  color: var(--color-text);
  padding: 8px;
}

.theme-selector option:disabled {
  color: var(--color-text-light);
}

/* Mobile adjustments */
@media (max-width: 767px) {
  .theme-selector {
    font-size: 13px;
    padding: 6px 28px 6px 10px;
  }
}