/* Copyright (c) 2025 Microsoft Corporation.
 * Licensed under the MIT License
 */

/**
 * NLWeb Chat UI Styles - Full Page Layout
 * Updated: Toggle button moved to top
 */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    overflow: hidden;
}

.hidden {
    display: none !important;
}

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

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
    background: #f5f5f5;
}

/* ============ Mobile Menu Toggle ============ */

.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 15px;
    left: 15px;
    z-index: 1001;
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 8px;
    cursor: pointer;
}

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

/* ============ Sidebar Toggle Button ============ */

.sidebar-toggle {
    position: fixed;
    left: 260px;
    top: 16px;
    z-index: 100;
    background: white;
    border: 1px solid #e0e0e0;
    border-left: none;
    border-radius: 0 6px 6px 0;
    padding: 8px 4px;
    cursor: pointer;
    transition: left 0.3s ease;
}

.sidebar-toggle svg {
    width: 14px;
    height: 14px;
    display: block;
    transition: transform 0.3s ease;
}

.sidebar-toggle:hover {
    background: #f8f9fa;
}

/* When sidebar is collapsed, move toggle to left edge and flip arrow */
.sidebar-toggle.collapsed {
    left: 0;
    border-left: 1px solid #e0e0e0;
    border-right: none;
    border-radius: 6px 0 0 6px;
}

.sidebar-toggle.collapsed svg {
    transform: rotate(180deg);
}

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

.sidebar {
    width: 260px;
    background: white;
    border-right: 1px solid #e0e0e0;
    display: flex;
    flex-direction: column;
    transition: margin-left 0.3s ease;
    flex-shrink: 0;
}

.sidebar.collapsed {
    margin-left: -260px;
}

.sidebar-header {
    padding: 15px;
    border-bottom: 1px solid #e0e0e0;
    background: #f8f9fa;
}

.conversations-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.conversations-title {
    font-size: 16px;
    font-weight: 600;
    color: #333;
}

.header-buttons {
    display: flex;
    gap: 8px;
}

.new-chat-icon-btn {
    background: #007bff;
    color: white;
    border: none;
    border-radius: 6px;
    padding: 6px 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.new-chat-icon-btn:hover {
    background: #0056b3;
}

.plus-icon {
    font-size: 18px;
    font-weight: 300;
    line-height: 1;
}

.conversations-list {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.site-group {
    margin-bottom: 8px;
}

.site-group-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 10px;
    background: #e9ecef;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    color: #495057;
    user-select: none;
}

.site-group-header:hover {
    background: #dee2e6;
}

.site-group-header .chevron {
    width: 16px;
    height: 16px;
    transition: transform 0.2s;
}

.site-group.collapsed .chevron {
    transform: rotate(-90deg);
}

.site-group.collapsed .site-conversations {
    display: none;
}

.site-conversations {
    padding-left: 8px;
    padding-top: 4px;
}

.conversation-item {
    padding: 10px;
    margin-bottom: 6px;
    background: #f8f9fa;
    border-radius: 8px;
    cursor: pointer;
    position: relative;
    transition: background 0.2s;
}

.conversation-item:hover {
    background: #e9ecef;
}

.conversation-item.active {
    background: #e7f3ff;
    border-left: 3px solid #007bff;
}

.conversation-content {
    padding-right: 24px;
}

.conversation-title {
    font-size: 14px;
    color: #333;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.conversation-delete {
    position: absolute;
    top: 8px;
    right: 8px;
    background: transparent;
    border: none;
    color: #999;
    font-size: 18px;
    cursor: pointer;
    padding: 2px 6px;
    opacity: 0;
    transition: opacity 0.2s;
}

.conversation-item:hover .conversation-delete {
    opacity: 1;
}

.conversation-delete:hover {
    color: #d32f2f;
}

/* ============ Main Content Area ============ */

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: white;
    overflow: hidden;
}

/* ============ Server Configuration Banner ============ */

.server-config-banner {
    background: #f8f9fa;
    border-bottom: 1px solid #e0e0e0;
    padding: 12px 20px;
}

.server-config-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 12px;
    padding-left: 10px;
}

.server-url-label {
    font-size: 14px;
    font-weight: 500;
    color: #333;
    white-space: nowrap;
}

.server-url-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid #d0d0d0;
    border-radius: 6px;
    font-size: 14px;
    font-family: monospace;
    outline: none;
    background: white;
}

.server-url-input:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.server-url-status {
    font-size: 13px;
    color: #28a745;
    white-space: nowrap;
    min-width: 60px;
}

.server-url-status.error {
    color: #dc3545;
}

/* ============ Chat Header ============ */

.chat-header {
    padding: 15px 20px;
    border-bottom: 1px solid #e0e0e0;
    background: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header-left {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.chat-title {
    font-size: 20px;
    font-weight: 600;
    color: #333;
}

.chat-site-info {
    font-size: 13px;
    color: #666;
}

/* ============ Chat Messages Area ============ */

.chat-messages {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.messages-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 20px;
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
}

/* ============ Centered Input (Initial State) ============ */

.centered-input-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    flex: 1;
}

.centered-input-wrapper {
    width: 100%;
    max-width: 700px;
}

.centered-input-box {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.input-box-top-row {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.centered-chat-input {
    flex: 1;
    border: none;
    outline: none;
    resize: none;
    font-size: 15px;
    font-family: inherit;
    padding: 8px;
    line-height: 1.5;
    min-height: 60px;
}

.centered-send-button {
    background: #007bff;
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    flex-shrink: 0;
    min-height: 40px;
}

.centered-send-button:hover {
    background: #0056b3;
}

.centered-send-button svg {
    width: 20px;
    height: 20px;
}

.input-box-bottom-row {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid #e0e0e0;
    display: flex;
    gap: 12px;
    align-items: center;
}

.site-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    outline: none;
}

.site-input:focus {
    border-color: #007bff;
}

.summarize-checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: #333;
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
}

.summarize-checkbox {
    cursor: pointer;
    width: 16px;
    height: 16px;
}

/* ============ Messages Display ============ */

.message {
    margin-bottom: 20px;
}

.user-message {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.message-sender {
    font-size: 12px;
    color: #666;
    margin-bottom: 4px;
}

.message-text {
    font-size: 15px;
    line-height: 1.6;
    color: #333;
}

.user-message .message-text {
    background: #e7f3ff;
    padding: 12px 16px;
    border-radius: 8px;
    max-width: 80%;
}

.assistant-message .message-text {
    width: 100%;
}

.message-appear {
    animation: fadeIn 0.3s ease-in;
}

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

/* ============ Search Results / Items ============ */

.search-results {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.item-container {
    display: flex;
    gap: 16px;
    padding: 16px;
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    transition: box-shadow 0.2s;
}

.item-container:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.item-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.item-title-row {
    display: flex;
    align-items: center;
}

.item-title-link {
    font-size: 16px;
    font-weight: 600;
    color: #007bff;
    text-decoration: none;
}

.item-title-link:hover {
    text-decoration: underline;
}

.item-site-link {
    font-size: 12px;
    color: #666;
    text-decoration: none;
}

.item-site-link:hover {
    text-decoration: underline;
}

.item-description {
    font-size: 14px;
    color: #555;
    line-height: 1.5;
}

.item-image {
    width: 80px;
    height: auto;
    object-fit: cover;
    border-radius: 6px;
    flex-shrink: 0;
}

.message-header {
    font-weight: 600;
    font-size: 13px;
    color: #666;
    margin-bottom: 6px;
}

.message-content {
    font-size: 15px;
    line-height: 1.6;
    color: #333;
}

.message-site {
    font-size: 12px;
    color: #999;
    margin-top: 8px;
}

/* ============ Follow-up Input (Bottom) ============ */

.chat-input-container {
    padding: 15px 20px;
    border-top: 1px solid #e0e0e0;
    background: white;
}

.chat-input-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.chat-input-box {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 12px;
}

.chat-input {
    flex: 1;
    border: none;
    outline: none;
    resize: none;
    font-size: 15px;
    font-family: inherit;
    padding: 8px;
    line-height: 1.5;
    max-height: 120px;
}

.send-button {
    background: #007bff;
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
    flex-shrink: 0;
    min-height: 40px;
}

.send-button:hover {
    background: #0056b3;
}

.send-button svg {
    width: 18px;
    height: 18px;
}

/* ============ Responsive Design ============ */

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

    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 1000;
        margin-left: -260px;
    }

    .sidebar.active {
        margin-left: 0;
    }

    .sidebar.collapsed {
        margin-left: -260px;
    }

    .sidebar-toggle {
        display: none;
    }

    .chat-title {
        font-size: 18px;
    }

    .message {
        max-width: 90%;
    }

    .centered-input-wrapper {
        padding: 0 15px;
    }

    .server-config-content {
        flex-wrap: wrap;
    }

    .server-url-label {
        width: 100%;
        margin-bottom: 4px;
    }

    .server-url-input {
        flex: 1;
        min-width: 0;
    }
}

/* ============ Loading State ============ */

.loading-indicator {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}