/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    overflow: hidden;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Toolbar */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background-color: #2c3e50;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.toolbar-left, .toolbar-right {
    display: flex;
    gap: 10px;
}

/* Buttons */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all 0.3s ease;
    background-color: #34495e;
    color: white;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.btn-primary {
    background-color: #3498db;
}

.btn-primary.active {
    background-color: #2980b9;
}

.btn-success {
    background-color: #27ae60;
}

.btn-info {
    background-color: #16a085;
}

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

/* Editor Section */
.editor-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: white;
    border-right: 1px solid #ddd;
}

.editor-mode {
    display: none;
    flex-direction: column;
    height: 100%;
}

.editor-mode.active {
    display: flex;
}

/* Quill Editor */
#quillToolbar {
    border: 1px solid #ccc;
    border-bottom: none;
}

#quillEditor {
    flex: 1;
    overflow-y: auto;
    font-size: 16px;
}

.ql-container {
    font-size: 16px;
}

/* Markdown Editor */
.markdown-toolbar {
    display: flex;
    gap: 5px;
    padding: 10px;
    background-color: #f8f8f8;
    border-bottom: 1px solid #ddd;
}

.markdown-toolbar button {
    width: 35px;
    height: 35px;
    border: 1px solid #ddd;
    background-color: white;
    cursor: pointer;
    font-weight: bold;
    border-radius: 4px;
    transition: all 0.2s;
}

.markdown-toolbar button:hover {
    background-color: #e8e8e8;
}

#markdownTextarea {
    flex: 1;
    padding: 20px;
    border: none;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 14px;
    line-height: 1.6;
    resize: none;
    outline: none;
}

/* Preview Section */
.preview-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: #e8e8e8;
    overflow: hidden;
}

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

.preview-header h3 {
    color: #2c3e50;
}

.page-info {
    color: #7f8c8d;
    font-size: 14px;
}

.preview-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

/* Preview Page Styles */
.preview-page {
    width: 210mm;
    min-height: 297mm;
    background: white;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
    padding: 40px;
    box-sizing: border-box;
    position: relative;
    display: flex;
    flex-direction: column;
}

.preview-watermark {
    max-width: 600px;
    opacity: 0.08;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    pointer-events: none;
}

.preview-header-section {
    display: flex;
    align-items: center;
    margin-bottom: 40px;
    position: relative;
    z-index: 10;
}

.preview-logo {
    width: 60px;
    height: 60px;
    margin-right: 20px;
}

.preview-company-info {
    display: flex;
    flex-direction: column;
}

.preview-company-name {
    font-size: 24px;
    font-weight: bold;
    color: #2c3e50;
    margin: 0;
    letter-spacing: 0.5px;
}

.preview-content-area {
    flex: 1;
    position: relative;
    z-index: 10;
    overflow: hidden;
}

.preview-content-area h1 {
    font-size: 28px;
    margin: 20px 0 15px 0;
    color: #2c3e50;
}

.preview-content-area h2 {
    font-size: 22px;
    margin: 18px 0 12px 0;
    color: #34495e;
}

.preview-content-area h3 {
    font-size: 18px;
    margin: 15px 0 10px 0;
    color: #34495e;
}

.preview-content-area p {
    margin: 10px 0;
    line-height: 1.6;
}

.preview-content-area ul, .preview-content-area ol {
    margin: 10px 0;
    padding-left: 25px;
}

.preview-content-area img {
    max-width: 100%;
    height: auto;
    margin: 10px 0;
}

.preview-content-area table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
}

.preview-content-area th, .preview-content-area td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

.preview-content-area th {
    background-color: #f8f8f8;
    font-weight: bold;
}

.preview-footer {
    margin-top: auto;
    padding-top: 25px;
    border-top: 1px solid #ecf0f1;
    position: relative;
    z-index: 10;
}

.preview-footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-left, .footer-right {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-item {
    display: flex;
    align-items: center;
    font-size: 12px;
    color: #666;
}

.footer-icon {
    width: 14px;
    height: 14px;
    margin-right: 8px;
    fill: #666;
}

/* Responsive */
@media (max-width: 1400px) {
    .preview-page {
        transform: scale(0.8);
        transform-origin: top center;
    }
}

@media (max-width: 1200px) {
    .preview-page {
        transform: scale(0.7);
    }
}

/* Loading State */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: #666;
}

.loading::after {
    content: '.';
    animation: dots 1.5s infinite;
}

@keyframes dots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}

/* Dropdown */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle::after {
    content: '▼';
    font-size: 10px;
    margin-left: 5px;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    display: none;
    z-index: 100;
    min-width: 180px;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: 10px 15px;
    border: none;
    background: none;
    text-align: left;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s;
}

.dropdown-item:hover {
    background-color: #f0f0f0;
}

/* Export Modal */
.export-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.export-modal-content {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.3);
}

.export-progress {
    margin-top: 20px;
    width: 300px;
    height: 4px;
    background-color: #ecf0f1;
    border-radius: 2px;
    overflow: hidden;
}

.export-progress-bar {
    height: 100%;
    background-color: #3498db;
    transition: width 0.3s ease;
}