/* PatentCraft AI - Global Styles */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* Color Palette - Professional Dark Theme */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-elevated: #30363d;
    
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    
    --accent-blue: #58a6ff;
    --accent-green: #3fb950;
    --accent-orange: #d29922;
    --accent-red: #f85149;
    --accent-purple: #a371f7;
    
    --border-default: #30363d;
    --border-muted: #21262d;
    
    /* Change Type Colors */
    --change-ai: #238636;
    --change-chat: #1f6feb;
    --change-manual: #9e6a03;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 12px;
    
    /* Font */
    --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Pane Widths */
    --left-pane-width: 28%;
    --center-pane-width: 48%;
    --right-pane-width: 24%;
}

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

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Header */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    padding: 0 var(--spacing-lg);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-default);
    flex-shrink: 0;
}

.header-left {
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: var(--accent-blue);
}

.logo-text {
    font-size: 18px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-center {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.header-btn svg {
    width: 16px;
    height: 16px;
}

.header-btn:hover {
    background: var(--bg-elevated);
    border-color: var(--accent-blue);
}

.header-right {
    display: flex;
    align-items: center;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 12px;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.status-indicator::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-indicator.connected::before {
    background: var(--accent-green);
    box-shadow: 0 0 8px var(--accent-green);
}

.status-indicator.disconnected::before {
    background: var(--accent-red);
}

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

/* Three Pane Layout */
.three-pane-layout {
    display: flex;
    width: 100%;
    height: calc(100vh - 56px); /* Subtract header height */
    flex: 1;
    overflow: hidden;
}

.left-pane {
    width: var(--left-pane-width);
    min-width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-default);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.center-pane {
    width: var(--center-pane-width);
    flex: 1;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.right-pane {
    width: var(--right-pane-width);
    min-width: 240px;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-default);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

/* Pane Headers */
.pane-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-default);
    flex-shrink: 0;
}

.pane-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Pane Content */
.pane-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

/* Scrollbar */
.pane-content::-webkit-scrollbar {
    width: 8px;
}

.pane-content::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

.pane-content::-webkit-scrollbar-thumb {
    background: var(--border-default);
    border-radius: 4px;
}

.pane-content::-webkit-scrollbar-thumb:hover {
    background: var(--bg-elevated);
}

/* Input Sections */
.input-section {
    margin-bottom: var(--spacing-lg);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.section-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: var(--accent-blue);
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: 50%;
}

/* Drop Zone */
.drop-zone {
    border: 2px dashed var(--border-default);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--bg-tertiary);
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--accent-blue);
    background: rgba(88, 166, 255, 0.1);
}

.drop-zone-icon {
    width: 32px;
    height: 32px;
    margin: 0 auto var(--spacing-sm);
    color: var(--text-muted);
}

.drop-zone-text {
    font-size: 13px;
    color: var(--text-secondary);
}

.drop-zone-hint {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

/* Text Area */
.text-input {
    width: 100%;
    min-height: 120px;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.6;
    resize: vertical;
    transition: border-color 0.2s ease;
}

.text-input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.text-input::placeholder {
    color: var(--text-muted);
}

/* Tab Navigation */
.tab-nav {
    display: flex;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-default);
    padding: 0 var(--spacing-md);
    gap: var(--spacing-xs);
    flex-shrink: 0;
    overflow-x: auto;
}

.tab-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    white-space: nowrap;
    transition: color 0.2s ease;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--accent-blue);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-blue);
}

/* Editor Area */
.editor-area {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
}

/* Claims List */
.claim-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.claim-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-default);
}

.claim-number {
    font-weight: 600;
    color: var(--accent-blue);
}

.claim-type {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    color: var(--text-secondary);
}

.claim-type.independent {
    background: rgba(88, 166, 255, 0.2);
    color: var(--accent-blue);
}

.claim-type.dependent {
    background: rgba(163, 113, 247, 0.2);
    color: var(--accent-purple);
}

.claim-content {
    padding: var(--spacing-md);
    font-size: 14px;
    line-height: 1.8;
}

.claim-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

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

.icon-btn svg {
    width: 16px;
    height: 16px;
}

/* History Badge */
.history-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 500;
}

.history-badge.ai {
    background: rgba(35, 134, 54, 0.2);
    color: var(--change-ai);
}

.history-badge.chat {
    background: rgba(31, 111, 235, 0.2);
    color: var(--change-chat);
}

.history-badge.manual {
    background: rgba(158, 106, 3, 0.2);
    color: var(--change-manual);
}

/* Chat Area */
.
{
    display: flex;
    flex-direction: column;
    height: 100%;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.chat-message {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    max-width: 95%;
}

.chat-message.user {
    background: var(--accent-blue);
    color: white;
    margin-left: auto;
}

.chat-message.assistant {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
}

.chat-input-area {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-default);
    background: var(--bg-tertiary);
}

.chat-target {
    font-size: 12px;
    color: var(--accent-blue);
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(88, 166, 255, 0.1);
    border-radius: var(--radius-sm);
    display: inline-block;
}

.chat-input-wrapper {
    display: flex;
    gap: var(--spacing-sm);
}

.chat-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    resize: none;
}

.chat-input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.chat-send-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--accent-blue);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    cursor: pointer;
    transition: background 0.2s ease;
}

.chat-send-btn:hover {
    background: #4c9aed;
}

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

/* Settings Section */
.settings-section {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-default);
    margin-top: auto;
}

.setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.setting-label {
    font-size: 12px;
    color: var(--text-secondary);
}

.setting-select {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 12px;
    cursor: pointer;
}

.setting-select:focus {
    outline: none;
    border-color: var(--accent-blue);
}

/* Progress Steps */
.progress-steps {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    overflow-x: auto;
}

.step-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.2s ease;
}

.step-item.completed {
    background: rgba(63, 185, 80, 0.2);
    color: var(--accent-green);
}

.step-item.current {
    background: rgba(88, 166, 255, 0.2);
    color: var(--accent-blue);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-elevated);
    font-size: 10px;
    font-weight: 600;
}

.step-item.completed .step-number {
    background: var(--accent-green);
    color: white;
}

.step-item.current .step-number {
    background: var(--accent-blue);
    color: white;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-default);
    background: var(--bg-secondary);
}

.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-primary {
    background: var(--accent-blue);
    border: none;
    color: white;
}

.btn-primary:hover {
    background: #4c9aed;
}

.btn-secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--bg-elevated);
    border-color: var(--accent-blue);
}

.btn-success {
    background: var(--accent-green);
    border: none;
    color: white;
}

.btn-success:hover {
    background: #46c955;
}

/* Thumbnails */
.thumbnail-scroll {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    padding: var(--spacing-sm) 0;
}

.thumbnail {
    flex-shrink: 0;
    width: 80px;
    height: 100px;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-default);
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.thumbnail:hover,
.thumbnail.selected {
    border-color: var(--accent-blue);
}

.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* File List */
.file-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
}

.file-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    color: var(--accent-blue);
}

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

.file-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    font-size: 11px;
    color: var(--text-muted);
}

/* Rating Stars */
.rating-stars {
    display: flex;
    gap: 2px;
}

.star {
    width: 14px;
    height: 14px;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s ease;
}

.star.filled {
    color: var(--accent-orange);
}

.star:hover {
    color: var(--accent-orange);
}

/* Term Table */
.term-table {
    width: 100%;
    border-collapse: collapse;
}

.term-table th,
.term-table td {
    padding: var(--spacing-sm);
    text-align: left;
    border-bottom: 1px solid var(--border-default);
}

.term-table th {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
}

.term-table td {
    font-size: 13px;
}

.term-input {
    width: 100%;
    padding: var(--spacing-xs);
    background: var(--bg-tertiary);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
}

.term-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    background: var(--bg-secondary);
}

/* Loading Spinner */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-default);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Drawing Canvas */
.drawing-canvas {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

.drawing-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.drawing-preview {
    aspect-ratio: 4/3;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
}

.drawing-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.drawing-info {
    padding: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.drawing-label {
    font-size: 13px;
    font-weight: 500;
}

/* Proofreading Report */
.report-section {
    margin-bottom: var(--spacing-lg);
}

.report-category {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

.category-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.category-icon.error {
    background: rgba(248, 81, 73, 0.2);
    color: var(--accent-red);
}

.category-icon.warning {
    background: rgba(210, 153, 34, 0.2);
    color: var(--accent-orange);
}

.category-icon.success {
    background: rgba(63, 185, 80, 0.2);
    color: var(--accent-green);
}

.category-info {
    flex: 1;
}

.category-title {
    font-size: 14px;
    font-weight: 500;
}

.category-count {
    font-size: 12px;
    color: var(--text-muted);
}

.fix-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--accent-blue);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-size: 12px;
    cursor: pointer;
}

.fix-btn:hover {
    background: #4c9aed;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

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

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow: hidden;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { 
        opacity: 0;
        transform: translateY(20px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-default);
}

.modal-title {
    font-size: 16px;
    font-weight: 600;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--spacing-xs);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    max-height: calc(80vh - 120px);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-default);
}

/* Collapsible Section */
.collapsible {
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
}

.collapsible-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    cursor: pointer;
    transition: background 0.2s ease;
}

.collapsible-header:hover {
    background: var(--bg-elevated);
}

.collapsible-title {
    font-size: 13px;
    font-weight: 500;
}

.collapsible-icon {
    width: 16px;
    height: 16px;
    transition: transform 0.2s ease;
}

.collapsible.open .collapsible-icon {
    transform: rotate(180deg);
}

.collapsible-content {
    padding: var(--spacing-md);
    display: none;
}

.collapsible.open .collapsible-content {
    display: block;
}

/* Responsive */
@media (max-width: 1200px) {
    :root {
        --left-pane-width: 30%;
        --center-pane-width: 45%;
        --right-pane-width: 25%;
    }
}

@media (max-width: 900px) {
    .three-pane-layout {
        flex-direction: column;
    }
    
    .left-pane,
    .center-pane,
    .right-pane {
        width: 100%;
        height: auto;
        border: none;
        border-bottom: 1px solid var(--border-default);
    }
}