/* ============================================
   NIXEL - Responsive Styles
   ============================================ */

/* ============================================
   App Layout
   ============================================ */

.app-container {
    display: flex;
    height: 100vh;
    /* Fallback */
    height: 100dvh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--bg-elevated);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.sidebar-header {
    padding: var(--spacing-6) var(--spacing-4);
    border-bottom: 1px solid var(--border-color);
}

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

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

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.main-header {
    padding: var(--spacing-4) var(--spacing-6);
    background-color: var(--bg-elevated);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-4);
    flex-shrink: 0;
}

.main-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-6);
}

/* Right Sidebar (Optional) */
.right-sidebar {
    width: 320px;
    background-color: var(--bg-elevated);
    border-left: 1px solid var(--border-color);
    overflow-y: auto;
    padding: var(--spacing-6);
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

/* Mobile Menu Toggle (Hidden now as we use bottom nav) */
.mobile-menu-toggle {
    display: none !important;
}

/* ============================================
   Mobile Bottom Navigation
   ============================================ */
.mobile-bottom-nav {
    display: none;
    /* Hidden by default (Desktop) */
}

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

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.nav-item.active {
    background-color: var(--primary-50);
    color: var(--primary-700);
}

[data-theme="dark"] .nav-item.active {
    background-color: var(--primary-900);
    color: var(--primary-200);
}

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

.nav-badge {
    margin-left: auto;
    background-color: var(--error);
    color: white;
    font-size: var(--font-size-xs);
    padding: 2px 6px;
    border-radius: var(--radius-full);
    min-width: 20px;
    text-align: center;
}

/* ============================================
   Feed Layout
   ============================================ */

.feed-container {
    max-width: 680px;
    margin: 0 auto;
}

.feed-item {
    margin-bottom: var(--spacing-6);
}

/* ============================================
   Post Card
   ============================================ */

.post-card {
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.post-header {
    padding: var(--spacing-4);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.post-author-info {
    flex: 1;
    min-width: 0;
}

.post-author-name {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    display: block;
    margin-bottom: 2px;
}

.post-meta {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.post-body {
    padding: 0 var(--spacing-4) var(--spacing-4);
}

.post-content {
    color: var(--text-primary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-4);
    word-wrap: break-word;
}

.post-image {
    width: 100%;
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-4);
}

.post-footer {
    padding: var(--spacing-3) var(--spacing-4);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.post-action {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background-color: transparent;
    border: none;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

/* ============================================
   Comment Section
   ============================================ */

.comments-section {
    padding: var(--spacing-4);
    border-top: 1px solid var(--border-color);
}

.comment-item {
    display: flex;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.comment-content {
    flex: 1;
    min-width: 0;
}

.comment-author {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-right: var(--spacing-2);
}

.comment-text {
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
    word-wrap: break-word;
}

.comment-meta {
    display: flex;
    gap: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.comment-action {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 0;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.comment-action:hover {
    color: var(--text-primary);
}

/* ============================================
   Chat Interface
   ============================================ */

.chat-container {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-4);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.chat-message {
    display: flex;
    gap: var(--spacing-3);
    animation: fadeIn var(--transition-base);
}

.chat-message.own {
    flex-direction: row-reverse;
}

.chat-message-content {
    max-width: 70%;
    background-color: var(--bg-secondary);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-lg);
}

.chat-message.own .chat-message-content {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
}

.chat-message-author {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-1);
}

.chat-message.own .chat-message-author {
    color: rgba(255, 255, 255, 0.9);
}

.chat-message-text {
    word-wrap: break-word;
}

.chat-message-time {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: var(--spacing-1);
}

.chat-message.own .chat-message-time {
    color: rgba(255, 255, 255, 0.7);
}

.chat-input-container {
    padding: var(--spacing-4);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-elevated);
}

.chat-input-wrapper {
    display: flex;
    gap: var(--spacing-2);
    align-items: flex-end;
}

.chat-input {
    flex: 1;
    min-height: 40px;
    max-height: 120px;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    resize: none;
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
}

/* ============================================
   Community Card
   ============================================ */

.community-card {
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

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

.community-cover {
    width: 100%;
    height: 120px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--primary-400), var(--secondary-400));
}

.community-info {
    padding: var(--spacing-4);
}

.community-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-2);
}

.community-description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-3);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.community-stats {
    display: flex;
    gap: var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-3);
}

/* ============================================
   Profile Header
   ============================================ */

.profile-header {
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    margin-bottom: var(--spacing-6);
}

.profile-top {
    display: flex;
    gap: var(--spacing-6);
    align-items: flex-start;
    margin-bottom: var(--spacing-4);
}

.profile-info {
    flex: 1;
}

.profile-name {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-2);
}

.profile-bio {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-4);
    line-height: var(--line-height-relaxed);
}

.profile-meta {
    display: flex;
    gap: var(--spacing-6);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

/* ============================================
   Search Bar
   ============================================ */

.search-bar {
    position: relative;
    flex: 1;
    max-width: 500px;
}

.search-input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4) var(--spacing-3) var(--spacing-10);
    background-color: var(--bg-secondary);
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.search-input:focus {
    background-color: var(--bg-primary);
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-icon {
    position: absolute;
    left: var(--spacing-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
}

/* ============================================
   Responsive Breakpoints
   ============================================ */

/* Tablet (max-width: 1024px) */
@media (max-width: 1024px) {
    .right-sidebar {
        display: none;
    }

    .main-body {
        padding: var(--spacing-4);
    }
}

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        z-index: var(--z-fixed);
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .mobile-menu-toggle {
        display: block;
    }

    .main-header {
        padding: var(--spacing-3) var(--spacing-4);
    }

    .main-body {
        padding: var(--spacing-3);
    }

    .feed-item {
        margin-bottom: var(--spacing-4);
    }

    .post-header,
    .post-body {
        padding: var(--spacing-3);
    }

    .chat-message-content {
        max-width: 85%;
    }

    .profile-top {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .profile-name {
        font-size: var(--font-size-2xl);
    }

    .search-bar {
        max-width: 100%;
    }

    .modal {
        max-width: 100%;
        margin: var(--spacing-4);
    }

    .community-card {
        margin-bottom: var(--spacing-3);
    }
}

/* Small Mobile (max-width: 480px) */
@media (max-width: 480px) {
    .main-header {
        padding: var(--spacing-2) var(--spacing-3);
    }

    .main-body {
        padding: var(--spacing-2);
    }

    /* Remove padding for chat views on mobile to fix layout */
    .main-body:has(.chat-container) {
        padding: 0;
    }

    .post-footer {
        flex-wrap: wrap;
    }



    .btn-lg {
        padding: var(--spacing-3) var(--spacing-6);
        font-size: var(--font-size-base);
    }

    h1 {
        font-size: var(--font-size-3xl);
    }

    h2 {
        font-size: var(--font-size-2xl);
    }

    h3 {
        font-size: var(--font-size-xl);
    }
}

/* ============================================
   Mobile Overlay
   ============================================ */

.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-overlay);
    z-index: calc(var(--z-fixed) - 1);
}

@media (max-width: 768px) {
    .mobile-overlay.active {
        display: block;
    }
}

/* ============================================
   Grid Layouts
   ============================================ */

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-4);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-4);
}

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {

    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hidden-mobile {
        display: none !important;
    }

    /* Mobile Bottom Navigation - Visible on Mobile */
    .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
        width: 90%;
        max-width: 400px;
        background: rgba(255, 255, 255, 0.1);
        /* Low opacity for glass */
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border: 1px solid rgba(255, 255, 255, 0.2);
        box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
        border-radius: 24px;
        padding: 10px 20px;
        justify-content: space-between;
        align-items: center;
        z-index: 1000;
    }

    /* Dark Mode Glass Adjustment */
    [data-theme="dark"] .mobile-bottom-nav {
        background: rgba(15, 23, 42, 0.6);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-item-mobile {
        color: var(--text-tertiary);
        text-decoration: none;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        /* Fixed size for perfect circle */
        height: 44px;
        border-radius: 50%;
        transition: all 0.3s ease;
        position: relative;
    }

    .nav-item-mobile.active {
        color: white;
        background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
        box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
        transform: translateY(-5px);
    }

    .nav-item-mobile .nav-icon {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 24px;
        height: 24px;
    }

    .nav-item-mobile .nav-icon svg {
        width: 100%;
        height: 100%;
        display: block;
    }

    /* Center "Create" Button */
    .nav-item-mobile-center {
        width: 50px;
        height: 50px;
        background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 1.5rem;
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
        cursor: pointer;
        transform: translateY(-20px);
        /* Floating above */
        transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        border: 4px solid var(--bg-primary);
        /* Cutout effect */
    }

    .nav-item-mobile-center span {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 28px;
        height: 28px;
    }

    .nav-item-mobile-center span svg {
        width: 100%;
        height: 100%;
        display: block;
    }

    [data-theme="dark"] .nav-item-mobile-center {
        border-color: #0f172a;
        /* Match dark bg */
    }

    .nav-item-mobile-center:active {
        transform: translateY(-15px) scale(0.95);
    }

    /* Notification Badge on Mobile Nav */
    /* Notification Badge on Mobile Nav (Numbers) */
    .nav-badge-mobile {
        position: absolute;
        top: 0;
        right: 0;
        min-width: 18px;
        height: 18px;
        padding: 0 5px;
        background-color: var(--error);
        color: white;
        font-size: 11px;
        font-weight: 700;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 12px;
        border: 2px solid var(--bg-elevated);
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
        z-index: 10;
        transform: translate(25%, -25%);
        /* Offset slightly to corner */
    }

    /* Red Dot Indicator (For Messages) */
    .nav-dot-indicator {
        position: absolute;
        top: -2px;
        right: -2px;
        width: 10px;
        height: 10px;
        background-color: var(--error);
        border-radius: 50%;
        border: 2px solid var(--bg-elevated);
        box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1);
        z-index: 10;
        display: none;
        /* Hidden by default */
    }

    .nav-dot-indicator.visible {
        display: block;
        animation: pulse-dot 2s infinite;
    }

    @keyframes pulse-dot {
        0% {
            transform: scale(1);
            box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7);
        }

        70% {
            transform: scale(1);
            box-shadow: 0 0 0 6px rgba(239, 68, 68, 0);
        }

        100% {
            transform: scale(1);
            box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
        }
    }

    /* Adjust main content to not be hidden behind floating nav */
    .main-body {
        padding-bottom: 100px !important;
    }

    /* Ensure chat input is visible above bottom nav */
    .chat-input-container {
        padding-bottom: 90px;
    }
}