:root {
    --body-bg: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --msger-bg: #fff;
    --border: 2px solid #ddd;
    --left-msg-bg: #579ffb;
    --right-msg-bg: #ececec;
    
    --header-bg: #ffffff;
    --header-border: #f0f0f0;
    --sidebar-bg: #ffffff;

    --search-bg: #f6f6f6;
    --search-border: #e9ecef;
    --search-text: #8c8c8c;
    --search-font-family: 'TT Travels', 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
    
    --theme-toggle-bg: #edf5fd;
    --theme-toggle-border: #e3f2fd;
    --theme-toggle-hover-bg: #e3f2fd;
    --theme-toggle-active-bg: #ffffff;
    
    --notification-badge: #dc3545;
    --avatar-border: #ffffff;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    
    --auth-register-bg: #f6f6f6;
    --auth-register-bg-hover: #f0f0f0;
    --auth-register-border: #e9ecef;
    --auth-login-bg: #438BFB;
    --auth-login-bg-hover: #3377E6;
    --auth-login-border: #438BFB;

    --menu-item-color: #464646;
    --menu-item-hover: #f0f0f0;
    --menu-item-active: #438BFB;
    
    --sidebar-expanded-width: 220px;
    --sidebar-collapsed-width: 64px;
}

.modern-header {
    background-color: var(--header-bg);
    height: 70px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
    border-bottom: 1px solid #ddd;
}


.header-container {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 16px;
    height: 100%;
    padding: 0 24px;
    max-width: 1400px;
    margin: 0 auto;
}


.search-container {
    position: relative;
    width: 100%;
    max-width: 400px;
    margin-right: 2vw;
}

.search-input {
    width: 100%;
    min-width: 400px;
    padding: 8px 16px 8px 44px;
    border: 1px solid var(--search-border);
    border-radius: 24px;
    background: var(--search-bg);
    color: var(--text-primary);
    font-size: 16px;
    font-family: var(--search-font-family);
    font-weight: 500;
    transition: all 0.2s ease;
}

.search-input::placeholder {
    color: var(--search-text);
    font-family: inherit;
}

.search-input:focus {
    outline: none;
    border-color: var(--theme-toggle-active);
    background: var(--header-bg);
}

.search-form {
    position: relative;
    display: flex;
    align-items: center;
}

.search-button {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--search-text);
    font-size: 14px;
    cursor: pointer;
    color: #777;
    background: none;
    border: none;
}

.search-results-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid #ddd;
    border-top: none;
    border-radius: 0 0 4px 4px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    max-height: 300px;
    overflow-y: auto;
    display: none;
}

.search-result-item {
    padding: 12px 15px;
    cursor: pointer;
    transition: background 0.2s;
    border-bottom: 1px solid #f0f0f0;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background: #f8f9fa;
}

.search-result-title {
    font-weight: 600;
    margin-bottom: 4px;
    color: #333;
}

.search-result-description {
    font-size: 0.9em;
    color: #666;
    margin-bottom: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.search-result-type {
    display: inline-block;
    padding: 2px 6px;
    background: #e9ecef;
    border-radius: 3px;
    font-size: 0.75em;
    color: #6c757d;
}

.search-loading {
    padding: 15px;
    text-align: center;
    color: #6c757d;
}

.search-no-results {
    padding: 15px;
    text-align: center;
    color: #6c757d;
    font-style: italic;
}

.search-result-item:has(.search-result-description:empty) {
    padding: 8px 15px;
}

.search-result-description:empty {
    display: none;
}

.theme-switch {
    display: inline-flex;
    align-items: center;
    background: var(--theme-toggle-bg);
    border: 1px solid var(--theme-toggle-border);
    border-radius: 22px;
    padding: 4px;
    gap: 6px;
}

.theme-switch__btn {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.theme-switch__btn:hover {
    background: var(--theme-toggle-hover-bg);
}

.theme-switch__btn.is-active {
    background: var(--theme-toggle-active-bg);
}


.notification-container {
    position: relative;
}

.notification-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 18px;
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-btn:hover {
    background: var(--search-bg);
    color: var(--text-primary);
}

.notification-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    background: var(--notification-badge);
    color: white;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
    line-height: 14px;
}


.user-profile {
    display: flex;
    align-items: center;
}

.user-avatar-container {
    position: relative;
    cursor: pointer;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--avatar-border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.2s ease;
}

.user-avatar:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.avatar-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--header-bg);
    border: 1px solid var(--header-border);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    padding: 16px;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 1000;
    margin-top: 8px;
}

.user-avatar-container:hover .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-info {
    border-bottom: 1px solid var(--header-border);
    padding-bottom: 12px;
    margin-bottom: 12px;
}

.user-name {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 4px;
}

.user-email {
    display: block;
    color: var(--text-secondary);
    font-size: 12px;
}

.user-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.user-action-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s ease;
}

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

.user-action-form {
    margin: 0;
}

.logout-btn {
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
}


.auth-buttons {
    display: flex;
    gap: 12px;
    align-items: center;
}

.auth-btn {
    padding: 8px 12px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.register-btn {
    color: var(--text-primary);
    background: var(--auth-register-bg);
    border: 1px solid var(--auth-register-border);
}

.register-btn:hover {
    background: var(--auth-register-bg-hover);
    color: var(--text-primary);
}

.login-btn {
    color: white;
    background: var(--auth-login-bg);
    border: 1px solid var(--auth-login-border);
}

.login-btn:hover {
    background: var(--auth-login-bg-hover);
    color: white;
}


.main-app-container {
    display: flex;
    width: 100%;
    min-height: calc(100vh - 70px);
    margin-top: 70px;
    position: relative;
}

body.no-header .main-app-container {
    min-height: 100vh;
    padding: 0;
    margin: 0;
}

body.no-header .main-content {
    width: 100%;
    margin-left: 0;
    padding: 0;
}

#chatbot-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
}

#chatbot-icon {
    width: 60px;
    height: 60px;
    background-color: #007bff;
    color: white;
    text-align: center;
    line-height: 60px;
    font-size: 30px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.2);
}

#chatbot-window {
    display: none;
    width: 350px;
    height: 500px;
    position: absolute;
    bottom: 80px;
    right: 0;
    background: var(--msger-bg);
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

#chatSessionSelect {
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-size: 0.9em;
    min-width: 150px;
}

.msger {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 400px;
    height: 500px;
    border: 2px solid #ddd;
    border-radius: 10px;
    background: white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    position: fixed;
    bottom: 80px;
    right: 20px;
}


.msger-header {
    flex-shrink: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: var(--border);
    background: #eee;
    color: #333;
    gap: 10px;
    flex-wrap: wrap;
}

.msger-header-title {
    display: flex;
    align-items: center;
    font-weight: bold;
    font-size: 1em;
    gap: 8px;
    flex: 1;
}

.msger-header-options {
    display: flex;
    gap: 10px;
    cursor: pointer;
    font-size: 1em;
    color: #555;
}

    .msger-header-options span:hover {
        color: #000;
    }

.msger-chat {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
    background-color: #fcfcfe;
}

.msg {
    display: flex;
    align-items: flex-end;
    margin-bottom: 10px;
}

.msg-bubble {
    max-width: 300px;
    padding: 15px;
    border-radius: 15px;
    background: var(--left-msg-bg);
    color: #fff;
}

.msg-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.msg-info-name {
    font-weight: bold;
}

.right-msg {
    flex-direction: row-reverse;
}

.right-msg .msg-bubble {
    background: var(--right-msg-bg);
    color: rgba(0, 0, 0, 1);
}

.msger-inputarea {
    display: flex;
    align-items: center;
    padding: 10px;
    border-top: 2px solid #ddd;
    background: #eee;
    flex-shrink: 0;
}

.msger-input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1em;
    background: white;
}

.msger-send-btn {
    margin-left: 5px;
    padding: 10px 15px;
    background: #579ffb;
    color: white;
    font-weight: bold;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    transition: background 0.2s;
}

.msger-send-btn:hover {
    background: #00356d;
}

.chat-session-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 2;
    font-size: 0.9em;
}


.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

.sidebar-toggle-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.sidebar-toggle-btn:hover {
    background: var(--search-bg);
    color: var(--text-primary);
}


.main-sidebar {
    width: 220px;
    height: 100vh;
    background-color: var(--sidebar-bg);
    border-right: 1px solid #ddd;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 1040;
    transition: width 0.25s ease-in-out;
    overflow: hidden;
}

.main-sidebar .list-group,
.main-sidebar .list-group-flush {
    border: 0;
    background-color: var(--sidebar-bg);
}
.main-sidebar .list-group-item {
    border: 0 !important;
}


.main-sidebar .list-group-item a {
    color: var(--menu-item-color);
    padding: 12px 16px;
    border-radius: 10px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    min-height: 44px;
    position: relative;
}

.main-sidebar .list-group-item a:hover {
    background: var(--menu-item-hover);
}

.main-sidebar .list-group-item a.active {
    background: var(--menu-item-active);
    color: #ffffff;
}

.main-sidebar .list-group-item a.active::after {
    content: '';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 2px;
    height: 20px;
    background: #ffffff;
    border-radius: 2px;
}
.main-sidebar .list-group-item a.active i {
    color: #ffffff;
}




.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    margin: 0;
}

.brand-mini-btn {
    background: none;
    border: none;
    padding: 6px;
    border-radius: 8px;
    cursor: pointer;
}

.main-sidebar .brand-mini-btn { display: none; }

.main-content {
    width: 100%;
    margin-left: 0;
    padding: 40px;
    transition: margin-left 0.25s ease-in-out;
}

.main-app-container .main-sidebar + .main-content {
    margin-left: 220px;
}


#main-sidebar {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    box-sizing: border-box;
}

.sidebar-header {
    flex-shrink: 0;
    width: 100%;
    height: 70px;
    background-color: var(--sidebar-bg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
}

.menu-list {
    flex: 1 1 auto;
    overflow-y: auto;
    padding-bottom: 8px;
    min-height: 0;
    max-height: calc(100vh - 70px - 60px);
    overflow-x: hidden;
}

.sidebar-user-card {
    background-color: var(--sidebar-bg);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    height: 60px;
    min-height: 60px;
    max-height: 60px;
}

.sidebar-user-link {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
}

.sidebar-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid #eee;
    flex-shrink: 0;
}

.sidebar-user-meta {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}

.sidebar-user-name {
    font-weight: 600;
    font-size: 14px;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-logout-form {
    margin: 0;
    flex-shrink: 0;
}

.sidebar-logout-btn {
    background: none;
    border: none;
    padding: 8px;
    border-radius: 8px;
    color: var(--menu-item-color);
    cursor: pointer;
    flex-shrink: 0;
}

.sidebar-logout-btn:hover {
    background: var(--menu-item-hover);
}
/* Show code when sidebar is collapsed */
.main-sidebar.collapsed .project-icon.collapsed {
    display: inline !important;
}

.main-sidebar.collapsed .fa-angle-right {
    display: none !important;
}

/* Show icon when sidebar is expanded */
.main-sidebar:not(.collapsed) .project-icon.collapsed {
    display: none !important;
}

.main-sidebar:not(.collapsed) .fa-angle-right {
    display: inline !important;
}

@media (max-width: 767.98px) {
    .modern-header::after { display: none; }

    .sidebar-toggle-btn {
        padding: 0;
    }
    .main-sidebar {
        transform: translateX(0);
        transition: transform 0.3s ease-in-out;
        width: 220px;
        overflow: hidden;
    }
    .main-sidebar.collapsed {
        transform: translateX(-220px);
    }
    .main-sidebar { width: var(--sidebar-expanded-width); transform: translateX(-100%); }
    .main-sidebar:not(.collapsed) { transform: translateX(0); }
    
    .main-content { margin-left: 0; }
    
    #main-sidebar {
        height: 100vh;
        overflow: hidden;
    }
    
    .menu-list {
        flex: 1 1 auto;
        overflow-y: auto;
        min-height: 0;
        max-height: calc(100vh - 70px - 60px);
    }
    
    .sidebar-user-card {
        height: 60px;
        min-height: 60px;
        max-height: 60px;
    }
}

@media (min-width: 768px) {
    .main-sidebar.collapsed {
        width: 64px;
    }

    .main-sidebar.collapsed .menu-text { display: none; }

    .main-sidebar .list-group-item a {
        width: 100%;
    }
    .main-sidebar .list-group-item a i {
        width: 20px;
        text-align: center;
    }
    
    .main-sidebar.collapsed .list-group-item {
        text-align: center;
        padding: 8px;
    }
    .main-sidebar.collapsed .list-group-item a {
        justify-content: center;
    }
    .main-sidebar.collapsed .list-group-item a.active::after {
        display: none;
    }
    .main-sidebar.collapsed .list-group-item a i {
        margin-right: 0 !important;
    }

    .main-sidebar.collapsed .sidebar-user-meta,
    .main-sidebar.collapsed .sidebar-user-name,
    .main-sidebar.collapsed .sidebar-user-role,
    .main-sidebar.collapsed .brand-text,
    .main-sidebar.collapsed .text-truncate {
        display: none !important;
    }

    .main-sidebar.collapsed .sidebar-user-card {
        justify-content: center;
        padding: 10px 8px;
        flex-direction: column;
        gap: 8px;
    }

    .main-sidebar.collapsed .sidebar-user-link {
        justify-content: center;
        gap: 0;
        width: 100%;
        flex-direction: column;
    }

    .main-sidebar.collapsed .sidebar-user-avatar {
        width: 32px;
        height: 32px;
    }

    .main-sidebar.collapsed .sidebar-logout-btn {
        display: none;
    }

    .main-sidebar .menu-mini { display: none; }
    .main-sidebar.collapsed .menu-text { display: none; }
    .main-sidebar.collapsed .menu-mini { display: inline-flex; }
    .main-sidebar.collapsed .brand-mini-btn { display: inline-flex; }
    .main-sidebar.collapsed .sidebar-toggle-btn { display: none; }
    .brand-mini-btn { padding: 0 12px; }

    body.sidebar-collapsed .main-app-container .main-sidebar + .main-content {
        margin-left: 64px;
    }
    body:not(.sidebar-collapsed) .modern-header::after { left: calc(var(--sidebar-expanded-width) - 1px); }
    body.sidebar-collapsed .modern-header::after { left: calc(var(--sidebar-collapsed-width) - 1px); }   
}


@media (max-width: 768px) {
    .header-container {
        padding: 0 16px;
    }

    .search-container {
        max-width: 300px;
    }

    .user-dropdown {
        right: -50px;
    }
}

@media (max-width: 576px) {
    .theme-toggle-btn {
        width: 40px;
        height: 20px;
    }

    .theme-toggle-container {
        padding: 0 2px;
    }

    .theme-icon {
        font-size: 10px;
    }
}