/* ============================================
   MODERN CSS RESET & BASE STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-bg: #0f0f23;
    --card-bg: #1a1a2e;
    --hover-bg: #252541;
    --text-primary: #ffffff;
    --text-secondary: #b4b4c8;
    --border-color: #2d2d44;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Override Bootstrap white backgrounds */
.card {
    background-color: var(--card-bg) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

.card-body {
    background-color: var(--card-bg) !important;
}

.form-control, .form-control:focus {
    background-color: var(--hover-bg) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

.form-control::placeholder {
    color: var(--text-secondary) !important;
}

.text-muted {
    color: var(--text-secondary) !important;
}

.badge {
    color: var(--text-primary) !important;
}

/* ============================================
   AUTHENTICATION SECTION
   ============================================ */

.auth-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #0f0f23 100%);
    position: relative;
    overflow: hidden;
}

.auth-section::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.auth-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.auth-header {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    font-size: 3rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1rem;
}

.auth-box {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.auth-form h2 {
    margin-bottom: 30px;
    font-size: 1.8rem;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.btn-primary:active {
    transform: translateY(0);
}

.full-width {
    width: 100%;
}

.auth-divider {
    text-align: center;
    margin: 30px 0;
    position: relative;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 40%;
    height: 1px;
    background: var(--border-color);
}

.auth-divider::before { left: 0; }
.auth-divider::after { right: 0; }

.auth-divider span {
    background: var(--card-bg);
    padding: 0 15px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.social-auth {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.btn-google,
.btn-anonymous {
    flex: 1;
    padding: 12px;
    border: 2px solid var(--border-color);
    background: var(--dark-bg);
    color: var(--text-primary);
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-google:hover,
.btn-anonymous:hover {
    border-color: #667eea;
    background: var(--hover-bg);
    transform: translateY(-2px);
}

.auth-switch {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.auth-switch a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
}

.auth-switch a:hover {
    text-decoration: underline;
}

/* ============================================
   NAVIGATION BAR
   ============================================ */

.navbar {
    background: var(--card-bg);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.nav-brand .logo {
    font-size: 1.8rem;
    margin: 0;
}

.nav-links {
    display: flex;
    gap: 8px;
}

.nav-link {
    padding: 10px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 10px;
    font-weight: 500;
    transition: var(--transition);
}

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

.nav-link.active {
    background: var(--primary-gradient);
    color: white;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    cursor: pointer;
}

.btn-secondary {
    background: var(--dark-bg);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    border-color: #667eea;
    background: var(--hover-bg);
}

/* ============================================
   MAIN CONTENT LAYOUT
   ============================================ */

.page {
    min-height: calc(100vh - 200px);
    padding: 20px 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

/* ============================================
   FACEBOOK-STYLE LAYOUT
   ============================================ */

.fb-layout {
    display: grid;
    grid-template-columns: 280px 1fr 280px;
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Left Sidebar */
.left-sidebar {
    position: sticky;
    top: 80px;
    height: fit-content;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
}

.sidebar-menu {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 12px 0;
    border: 1px solid var(--border-color);
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-primary);
}

.menu-item:hover {
    background: var(--hover-bg);
}

.menu-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-text {
    font-weight: 500;
    font-size: 0.95rem;
}

/* Main Feed */
.main-feed {
    max-width: 680px;
}

/* Right Sidebar */
.right-sidebar {
    position: sticky;
    top: 80px;
    height: fit-content;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 20px;
    border: 1px solid var(--border-color);
}

.right-sidebar h3 {
    margin-bottom: 16px;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.online-users {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.online-user {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.online-user:hover {
    background: var(--hover-bg);
}

.online-user img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
}

.online-user span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* ============================================
   CREATE POST CARD
   ============================================ */

.create-post-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 16px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.create-post-header {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.create-post-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    object-fit: cover;
}

.create-post-header textarea {
    flex: 1;
    padding: 12px 16px;
    background: var(--hover-bg);
    border: none;
    border-radius: 24px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    resize: none;
    transition: var(--transition);
}

.create-post-header textarea:focus {
    outline: none;
    background: var(--dark-bg);
}

#imagePreviewContainer {
    position: relative;
    margin: 12px 0;
    border-radius: 12px;
    overflow: hidden;
}

#imagePreview {
    width: 100%;
    max-height: 400px;
    object-fit: contain;
    background: var(--dark-bg);
}

.remove-image-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.remove-image-btn:hover {
    background: rgba(0, 0, 0, 0.9);
}

.create-post-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.post-action-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.post-action-btn:hover {
    background: var(--hover-bg);
}

.action-icon {
    font-size: 1.3rem;
}

.btn-post {
    padding: 10px 32px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-post:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-post:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ============================================
   POSTS FEED
   ============================================ */

.feed-title {
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.posts-feed {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

#postsContainer {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.post-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 0;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.post-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(102, 126, 234, 0.3);
}

.post-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
}

.post-content {
    padding: 0 16px 16px 16px;
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-primary);
    word-wrap: break-word;
}

.post-image {
    margin: 0;
    cursor: pointer;
    background: var(--dark-bg);
}

.post-image img {
    width: 100%;
    max-height: 600px;
    object-fit: contain;
    display: block;
    transition: var(--transition);
}

.post-image img:hover {
    opacity: 0.95;
}

.post-actions {
    display: flex;
    gap: 12px;
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
}

.avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.avatar:hover {
    border-color: #667eea;
    transform: scale(1.05);
}

.post-author-info {
    flex: 1;
}

.post-author {
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
}

.post-author:hover {
    color: #667eea;
}

.post-time {
    color: var(--text-secondary);
    font-size: 0.85rem;
    display: block;
}

.post-timestamp {
    color: var(--text-secondary);
    font-size: 0.75rem;
    display: block;
    margin-top: 2px;
    font-family: 'Courier New', monospace;
    opacity: 0.8;
}

/* Remove duplicate post-content if exists below */

.post-actions {
    display: flex;
    gap: 12px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.reaction-btn,
.comment-btn {
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    padding: 10px 16px;
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.reaction-btn:hover,
.comment-btn:hover {
    background: var(--hover-bg);
    border-color: #667eea;
    transform: translateY(-2px);
}

.reaction-btn.active {
    background: var(--primary-gradient);
    border-color: transparent;
    color: white;
}

/* ============================================
   COMMENTS SECTION
   ============================================ */

.comments-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 16px;
}

.comment {
    display: flex;
    gap: 12px;
    padding: 12px;
    background: var(--dark-bg);
    border-radius: 12px;
}

.comment-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
}

.comment-content {
    flex: 1;
}

.comment-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.comment-author {
    font-weight: 600;
    font-size: 0.95rem;
}

.comment-time {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.comment-content p {
    font-size: 0.95rem;
    line-height: 1.5;
}

.comment-form {
    display: flex;
    gap: 10px;
}

.comment-form input {
    flex: 1;
    padding: 12px 16px;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.comment-form input:focus {
    outline: none;
    border-color: #667eea;
}

.comment-form button {
    padding: 12px 24px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.comment-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.no-comments,
.login-prompt {
    text-align: center;
    color: var(--text-secondary);
    padding: 20px;
    font-style: italic;
}

/* ============================================
   USERS PAGE
   ============================================ */

.page-header {
    text-align: center;
    margin-bottom: 40px;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.users-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.user-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 24px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(102, 126, 234, 0.5);
}

.user-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 3px solid var(--border-color);
}

.user-info h3 {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.user-email {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 6px;
}

.user-status {
    display: inline-block;
    padding: 4px 10px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* ============================================
   PROFILE PAGE
   ============================================ */

.profile-header {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 40px;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 30px;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 4px solid var(--border-color);
}

.profile-info {
    flex: 1;
}

.profile-info h1 {
    font-size: 2rem;
    margin-bottom: 8px;
}

.profile-info p {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.profile-badge {
    display: inline-block;
    padding: 6px 14px;
    background: var(--success-gradient);
    color: white;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
}

.profile-posts h2 {
    margin-bottom: 20px;
    font-size: 1.8rem;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 30px 20px;
    text-align: center;
    margin-top: 60px;
}

.footer p {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
}

.footer a:hover {
    text-decoration: underline;
}

.footer-tagline {
    font-style: italic;
}

/* ============================================
   IMAGE MODAL
   ============================================ */

.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.modal-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
}

.modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    font-size: 2rem;
    color: white;
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: #667eea;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.loading,
.no-posts,
.no-users {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.loading {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================
   NOTIFICATIONS
   ============================================ */

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 24px;
    border-radius: 12px;
    color: white;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transform: translateX(400px);
    transition: transform 0.3s ease;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
}

.notification.error {
    background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
}

.notification.info {
    background: var(--primary-gradient);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1200px) {
    .fb-layout {
        grid-template-columns: 1fr;
    }

    .left-sidebar,
    .right-sidebar {
        display: none;
    }

    .main-feed {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    body {
        overflow-x: hidden;
    }

    .navbar {
        flex-wrap: wrap;
        gap: 8px;
        padding: 12px 16px;
    }

    .nav-brand .logo {
        font-size: 1.5rem !important;
    }

    .nav-links {
        order: 3;
        width: 100%;
        justify-content: center;
        gap: 6px;
    }

    .nav-link {
        padding: 8px 16px;
        font-size: 0.9rem;
    }

    .nav-user {
        font-size: 0.85rem;
    }

    .nav-user span {
        display: none;
    }

    .nav-avatar {
        width: 36px;
        height: 36px;
    }

    .btn-secondary {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .auth-box {
        padding: 24px;
    }

    .fb-layout {
        padding: 0 8px;
        gap: 12px;
    }

    .page {
        padding: 12px 0;
    }

    .create-post-card {
        padding: 12px;
        margin-bottom: 12px;
        border-radius: 12px;
    }

    .create-post-header {
        gap: 8px;
    }

    .create-post-avatar {
        width: 36px;
        height: 36px;
    }

    .create-post-header textarea {
        font-size: 0.9rem;
        padding: 10px 14px;
    }

    .create-post-actions {
        padding-top: 10px;
        gap: 8px;
    }

    .post-action-btn {
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .btn-post {
        padding: 8px 24px;
        font-size: 0.9rem;
    }

    .post-card {
        border-radius: 12px;
        margin-bottom: 12px;
    }

    .post-header {
        padding: 12px;
    }

    .avatar {
        width: 40px;
        height: 40px;
    }

    .post-author {
        font-size: 1rem;
    }

    .post-time,
    .post-timestamp {
        font-size: 0.75rem;
    }

    .post-content {
        padding: 0 12px 12px 12px;
        font-size: 0.95rem;
    }

    .post-image img {
        max-height: 400px;
    }

    .post-actions {
        padding: 10px 12px;
        gap: 8px;
    }

    .reaction-btn,
    .comment-btn {
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .comments-section {
        padding: 0 12px 12px 12px;
    }

    .comment {
        padding: 10px;
        gap: 10px;
    }

    .comment-avatar {
        width: 32px;
        height: 32px;
    }

    .comment-author {
        font-size: 0.85rem;
    }

    .comment-time {
        font-size: 0.75rem;
    }

    .comment-content p {
        font-size: 0.85rem;
    }

    .comment-form input {
        padding: 10px 12px;
        font-size: 0.85rem;
    }

    .comment-form button {
        padding: 10px 20px;
        font-size: 0.85rem;
    }

    .profile-header {
        flex-direction: column;
        text-align: center;
        padding: 24px;
        gap: 20px;
    }

    .profile-avatar {
        width: 100px;
        height: 100px;
    }

    .profile-info h1 {
        font-size: 1.5rem;
    }

    .users-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .user-card {
        padding: 16px;
    }

    .social-auth {
        flex-direction: column;
    }

    .container {
        padding: 0 12px;
    }

    .modal-content {
        max-width: 95%;
    }

    .modal-close {
        font-size: 1.5rem;
        top: -35px;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 10px 12px;
    }

    .nav-brand .logo {
        font-size: 1.3rem !important;
    }

    .nav-links {
        gap: 4px;
    }

    .nav-link {
        padding: 6px 12px;
        font-size: 0.85rem;
    }

    .btn-secondary {
        padding: 6px 12px;
        font-size: 0.8rem;
    }

    .page {
        padding: 10px 0;
    }

    .fb-layout {
        padding: 0 6px;
    }

    .create-post-card {
        padding: 10px;
        margin-bottom: 10px;
    }

    .create-post-avatar {
        width: 32px;
        height: 32px;
    }

    .create-post-header textarea {
        font-size: 0.85rem;
        padding: 8px 12px;
    }

    .post-action-btn {
        padding: 6px 10px;
        font-size: 0.8rem;
    }

    .action-icon {
        font-size: 1.1rem;
    }

    .btn-post {
        padding: 6px 20px;
        font-size: 0.85rem;
    }

    #imagePreview {
        max-height: 300px;
    }

    .post-card {
        margin-bottom: 10px;
    }

    .post-header {
        padding: 10px;
    }

    .avatar {
        width: 36px;
        height: 36px;
    }

    .post-author {
        font-size: 0.95rem;
    }

    .post-content {
        padding: 0 10px 10px 10px;
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .post-image img {
        max-height: 300px;
    }

    .post-actions {
        padding: 8px 10px;
        gap: 6px;
        flex-wrap: wrap;
    }

    .reaction-btn,
    .comment-btn {
        flex: 1;
        min-width: calc(50% - 3px);
        padding: 6px 10px;
        font-size: 0.8rem;
        justify-content: center;
    }

    .comments-section {
        padding: 0 10px 10px 10px;
    }

    .comment {
        padding: 8px;
        gap: 8px;
    }

    .comment-avatar {
        width: 28px;
        height: 28px;
    }

    .comment-form {
        flex-direction: column;
        gap: 8px;
    }

    .comment-form input {
        width: 100%;
    }

    .comment-form button {
        width: 100%;
        padding: 10px;
    }

    .profile-header {
        padding: 20px;
    }

    .profile-avatar {
        width: 80px;
        height: 80px;
    }

    .profile-info h1 {
        font-size: 1.3rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .page-header p {
        font-size: 0.95rem;
    }

    .user-card {
        padding: 12px;
    }

    .user-avatar {
        width: 56px;
        height: 56px;
    }

    .user-info h3 {
        font-size: 1rem;
    }

    .user-email {
        font-size: 0.8rem;
    }

    .auth-container {
        padding: 16px;
    }

    .auth-header h1 {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 0.9rem;
    }

    .auth-box {
        padding: 20px;
    }

    .auth-form h2 {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }

    .form-group input {
        padding: 12px 14px;
        font-size: 0.9rem;
    }

    .btn-primary,
    .btn-google,
    .btn-anonymous {
        padding: 12px 20px;
        font-size: 0.9rem;
    }

    .notification {
        right: 10px;
        left: 10px;
        padding: 12px 16px;
        font-size: 0.9rem;
    }
}