/* Layout Styles */

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

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-elevated);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
}

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

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.header-logo svg {
    color: var(--accent-color);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

.nav-link.active {
    color: var(--accent-color);
    background-color: rgba(0, 122, 255, 0.1);
}

.nav-link svg {
    flex-shrink: 0;
}

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

/* Main Content */
.main-content {
    flex: 1;
    max-width: var(--container-max-width);
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
}

.page-actions {
    display: flex;
    gap: var(--spacing-md);
}

/* Filters Bar */
.filters-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.filter-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-select {
    min-width: 150px;
}

/* Content Section */
.content-section {
    margin-bottom: var(--spacing-xl);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

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

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

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

/* Responsive */
@media (max-width: 768px) {
    .header-nav {
        display: none;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .filters-bar {
        flex-direction: column;
    }

    .filter-select {
        width: 100%;
    }

    .main-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .header-logo span {
        display: none;
    }
}

/* Channel Cards */
.channel-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

/* Small tablets (480px+) */
@media (min-width: 480px) {
    .channel-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
}

/* Tablets (768px+) */
@media (min-width: 768px) {
    .channel-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
}

/* Laptops (1024px+) */
@media (min-width: 1024px) {
    .channel-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Desktops (1280px+) */
@media (min-width: 1280px) {
    .channel-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Large desktops (1536px+) */
@media (min-width: 1536px) {
    .channel-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

/* Extra large (1920px+) */
@media (min-width: 1920px) {
    .channel-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

.channel-card {
    background-color: var(--bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    border-left: 3px solid transparent;
    padding: var(--spacing-lg);
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    min-height: 180px;
}

.channel-card[data-status="joined"] {
    border-left-color: var(--success-color);
}

.channel-card[data-status="not-joined"] {
    border-left-color: var(--warning-color);
    opacity: 0.85;
}

.channel-card[data-status="not-joined"]:hover {
    opacity: 1;
}

.channel-card:hover {
    box-shadow: var(--shadow-md);
}

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

.channel-card-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

.channel-card-id {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.channel-card-body {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.channel-stat {
    text-align: center;
    padding: var(--spacing-sm);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.channel-stat-label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.channel-stat-value {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.channel-card-footer {
    display: flex;
    gap: var(--spacing-sm);
}

/* Channel card responsive adjustments */
@media (max-width: 480px) {
    .channel-card {
        padding: var(--spacing-md);
    }

    .channel-card-name {
        font-size: var(--font-size-md);
    }

    .channel-stat-value {
        font-size: var(--font-size-md);
    }
}

/* Filter bar responsive */
@media (max-width: 768px) {
    .filters-bar {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .filter-group {
        width: 100%;
    }

    .filter-select,
    .filters-bar input[type="text"] {
        width: 100%;
    }
}

/* Header responsive */
@media (max-width: 768px) {
    .page-header {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md);
    }

    .page-actions {
        flex-direction: column;
        width: 100%;
    }

    .page-actions .btn {
        width: 100%;
    }
}

/* Pagination responsive */
@media (max-width: 480px) {
    .pagination-container {
        flex-wrap: wrap !important;
    }

    .pagination-btn {
        min-width: 32px !important;
        height: 32px !important;
        padding: 0 var(--spacing-sm) !important;
        font-size: var(--font-size-xs) !important;
    }

    .pagination-info {
        font-size: var(--font-size-xs) !important;
        width: 100%;
        text-align: center;
    }
}

/* Pagination - Fixed at bottom */
.card-footer {
    padding: 0;
}

.pagination-container {
    position: sticky;
    bottom: 0;
    background: var(--bg-elevated);
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    z-index: 10;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

/* Stats Grid Alignment */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    align-items: stretch;
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 100px;
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-fast);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   MOBILE RESPONSIVENESS IMPROVEMENTS
   ============================================ */

/* Header - Mobile */
@media (max-width: 768px) {
    .header-container {
        padding: 0 var(--spacing-md);
    }

    .header-logo span {
        font-size: var(--font-size-md);
    }

    .header-actions {
        gap: var(--spacing-xs);
    }

    .profile-name {
        display: none;
    }

    .listener-indicator .status-text {
        display: none;
    }
}

/* Dashboard - Mobile */
@media (max-width: 768px) {
    .main-content {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-sm);
    }

    .stat-card {
        min-height: 80px;
        padding: var(--spacing-md);
    }

    .stat-value {
        font-size: var(--font-size-xl);
    }

    .page-title {
        font-size: var(--font-size-xl);
    }
}

/* Stats Grid - Small Mobile */
@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .stat-card {
        min-height: 70px;
    }
}

/* Listener Status Card - Mobile */
@media (max-width: 768px) {
    .listener-status-details {
        font-size: var(--font-size-xs);
    }

    #toggleListenerBtn {
        width: 100%;
        padding: var(--spacing-md);
    }
}

/* Cards - Mobile */
@media (max-width: 768px) {
    .card {
        border-radius: var(--radius-md);
    }

    .card-header {
        padding: var(--spacing-md);
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .card-header h3 {
        font-size: var(--font-size-md);
    }

    .card-body {
        padding: var(--spacing-md);
    }
}

/* Filters Bar - Mobile */
@media (max-width: 768px) {
    .filters-bar {
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }

    .filter-group {
        width: 100%;
    }

    .filter-select,
    .filters-bar input[type="text"],
    .filters-bar input[type="number"] {
        width: 100%;
        padding: var(--spacing-sm);
    }

    .filter-label {
        font-size: 10px;
    }
}

/* Table - Mobile */
@media (max-width: 768px) {
    .table-container {
        border-radius: var(--radius-md);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    table {
        min-width: 600px;
    }

    th,
    td {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    /* Hide less important columns on mobile */
    th:nth-child(5),
    td:nth-child(5) {
        display: none;
    }
}

/* Buttons - Mobile Touch Targets */
@media (max-width: 768px) {
    .btn {
        min-height: 44px;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .icon-button {
        width: 44px;
        height: 44px;
    }

    .pagination-btn {
        min-width: 40px;
        height: 40px;
    }
}

/* Modal - Mobile */
@media (max-width: 768px) {
    .modal {
        width: 95%;
        max-height: 95vh;
        margin: 2.5vh auto;
    }

    .modal-header {
        padding: var(--spacing-md);
    }

    .modal-body {
        padding: var(--spacing-md);
    }

    .modal-footer {
        padding: var(--spacing-md);
        flex-direction: column;
    }

    .modal-footer .btn {
        width: 100%;
    }
}

/* Process Flow - Mobile */
@media (max-width: 768px) {
    .process-flow {
        grid-template-columns: 1fr;
    }

    .process-step {
        padding: var(--spacing-md);
    }

    .step-icon {
        width: 40px;
        height: 40px;
    }

    .step-content h3 {
        font-size: var(--font-size-md);
    }
}

/* Message Preview - Mobile */
@media (max-width: 480px) {
    .message-preview {
        padding: var(--spacing-sm);
    }

    .message-preview-text {
        font-size: var(--font-size-sm);
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
        display: -webkit-box;
    }
}

/* Pagination - Mobile */
@media (max-width: 480px) {
    .pagination-container {
        padding: var(--spacing-md) var(--spacing-sm);
        gap: var(--spacing-xs);
    }

    .pagination-btn {
        min-width: 36px;
        height: 36px;
        padding: 0 var(--spacing-xs);
        font-size: 12px;
    }

    .pagination-info {
        font-size: 11px;
        text-align: center;
    }
}

/* Skeleton Loader - Mobile */
@media (max-width: 480px) {
    .skeleton {
        height: 14px !important;
    }
}

/* Safe Area for iOS (notch, home indicator) */
@supports (padding: max(0px)) {
    @media (max-width: 768px) {
        .header {
            padding-top: max(var(--spacing-sm), env(safe-area-inset-top));
        }

        .main-content {
            padding-bottom: max(var(--spacing-md), env(safe-area-inset-bottom));
        }
    }
}