/* =====================================================
   VAULT V11 - Layout Styles
   Navigation, grids, and page layouts
   Optimized for Chromebooks (1366x768, 1920x1080)
   ===================================================== */

/* =====================================================
   Main Layout Structure
   ===================================================== */

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

.main-content {
    flex: 1;
    padding: var(--space-6);
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-base);
}

/* When sidebar is collapsed */
.main-content.sidebar-collapsed {
    margin-left: var(--sidebar-collapsed);
}

/* =====================================================
   Sidebar Navigation
   ===================================================== */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    height: 100dvh;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    z-index: var(--z-nav);
    transition: width var(--transition-base);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar-header {
    padding: var(--space-5);
    border-bottom: 1px solid var(--border-primary);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border-radius: var(--radius-lg);
    font-size: var(--text-lg);
    color: white;
}

.sidebar-logo-text {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
}

.sidebar.collapsed .sidebar-logo-text {
    display: none;
}

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

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

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

.sidebar.collapsed .nav-section-title {
    display: none;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-3);
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    text-decoration: none;
    margin-bottom: var(--space-1);
}

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

.nav-item.active {
    background: var(--accent);
    color: white;
}

.nav-item-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-base);
}

.nav-item-text {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.sidebar.collapsed .nav-item-text {
    display: none;
}

.sidebar.collapsed .nav-item {
    justify-content: center;
}

.sidebar-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--border-primary);
}

/* =====================================================
   Top Navigation Bar
   ===================================================== */

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

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

.topbar-title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* =====================================================
   Page Header
   ===================================================== */

.page-header {
    margin-bottom: var(--space-6);
}

.page-title {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-2);
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: var(--text-base);
}

/* =====================================================
   Grid System - Game Cards
   ===================================================== */

.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--space-5);
}

/* Chromebook optimized breakpoints */
@media (min-width: 768px) {
    .game-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (min-width: 1024px) {
    .game-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    }
}

@media (min-width: 1366px) {
    .game-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: var(--space-6);
    }
}

/* =====================================================
   Container
   ===================================================== */

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.container-sm { max-width: 800px; }
.container-lg { max-width: 1800px; }
.container-full { max-width: none; }

/* =====================================================
   Sections
   ===================================================== */

.section {
    margin-bottom: var(--space-8);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-5);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.section-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
}

.section-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* =====================================================
   Filters Bar
   ===================================================== */

.filters-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-6);
}

.filters-search {
    flex: 1;
    min-width: 250px;
}

.filters-group {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* =====================================================
   Game Player Layout
   ===================================================== */

.player-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
    background: var(--bg-primary);
}

.player-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-5);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
}

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

.player-back {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-secondary);
}

.player-back:hover {
    color: var(--accent);
}

.player-title {
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
}

.player-controls {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.player-frame-wrapper {
    flex: 1;
    position: relative;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.player-iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Fullscreen mode */
.player-container.fullscreen {
    position: fixed;
    inset: 0;
    z-index: 9999;
}

.player-container.fullscreen .player-topbar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    transform: translateY(-100%);
    transition: transform var(--transition-base);
}

.player-container.fullscreen:hover .player-topbar {
    transform: translateY(0);
}

/* =====================================================
   Error / Loading States
   ===================================================== */

.loading-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    gap: var(--space-4);
}

.loading-screen .spinner {
    width: 48px;
    height: 48px;
}

.error-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    text-align: center;
    padding: var(--space-6);
}

.error-icon {
    font-size: var(--text-5xl);
    color: var(--error);
    margin-bottom: var(--space-4);
}

/* =====================================================
   Responsive: Tablet / Small Chromebook
   ===================================================== */

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .main-content.sidebar-collapsed {
        margin-left: 0;
    }
    
    /* Mobile menu toggle */
    .menu-toggle {
        display: flex;
    }
}

/* =====================================================
   Responsive: Mobile
   ===================================================== */

@media (max-width: 768px) {
    .main-content {
        padding: var(--space-4);
    }
    
    .topbar {
        padding: var(--space-3) var(--space-4);
    }
    
    .page-title {
        font-size: var(--text-2xl);
    }
    
    .filters-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filters-search {
        min-width: auto;
    }
    
    .game-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-3);
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .player-topbar {
        padding: var(--space-2) var(--space-3);
    }
    
    .player-title {
        font-size: var(--text-base);
    }
}

/* Extra small screens */
@media (max-width: 480px) {
    .game-grid {
        grid-template-columns: 1fr;
    }
}

/* =====================================================
   Print Styles (hide UI elements)
   ===================================================== */

@media print {
    .sidebar,
    .topbar,
    .player-controls {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0 !important;
    }
}