styles/main.css

/*
   ELYSIA MARKDOWN STUDIO v1.0 - Main Styles
   The Elysia Suite - Dark, Elegant, Writer-Focused
   Built with love by Jean & Elysia 💎
*/

/* ========================================
   CSS VARIABLES
   ======================================== */
:root {
    /* Backgrounds */
    --bg-primary: #0a0a0f;
    --bg-secondary: #15151f;
    --bg-tertiary: #1a1a2e;
    --bg-hover: #20203a;
    --bg-active: #2a2a4a;
    --bg-editor: #12121a;

    /* Gradients (Elysia Signature) */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-blue: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);

    /* Text */
    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b8;
    --text-tertiary: #6a6a88;
    --text-editor: #e8e8f0;

    /* Accents */
    --accent-purple: #a78bfa;
    --accent-blue: #60a5fa;
    --accent-pink: #f472b6;
    --accent-green: #34d399;

    /* Semantic */
    --success: #34d399;
    --error: #f87171;
    --warning: #fbbf24;
    --info: #60a5fa;

    /* Borders & Shadows */
    --border-color: #2a2a4a;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);

    /* Fonts */
    --font-mono: "JetBrains Mono", monospace;
    --font-sans: "Space Grotesk", sans-serif;
}

/* ========================================
   RESET & BASE
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
}

/* ========================================
   LAYOUT
   ======================================== */
#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.app-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    align-items: center;
    gap: 1rem;
}

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

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

.header-right {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo .icon {
    font-size: 1.5rem;
}

.version {
    font-size: 0.7rem;
    padding: 0.15rem 0.4rem;
    background: var(--gradient-primary);
    border-radius: 4px;
    font-weight: 400;
}

/* Document Title */
.doc-title-container {
    width: 100%;
    text-align: center;
}

.doc-title-input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    width: 100%;
    padding: 0.25rem;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s;
}

.doc-title-input:focus {
    outline: none;
    border-bottom-color: var(--accent-purple);
}

.doc-stats {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: 0.25rem;
    font-family: var(--font-mono);
}

.separator {
    margin: 0 0.5rem;
    color: var(--border-color);
}

/* Main Container */
.main-container {
    display: grid;
    grid-template-columns: 0fr 1fr;
    height: calc(100vh - 90px);
    overflow: hidden;
    transition: grid-template-columns 0.3s ease;
}

.main-container.sidebar-open {
    grid-template-columns: 300px 1fr;
}

/* ========================================
   SIDEBAR
   ======================================== */
.sidebar-left {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.sidebar-left.collapsed {
    width: 0;
}

.sidebar-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h2 {
    font-size: 1rem;
    font-weight: 700;
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

.search-box {
    margin-bottom: 1rem;
}

.search-box input {
    width: 100%;
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-purple);
}

/* Filter Tabs */
.filter-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.filter-tab {
    flex: 1;
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.filter-tab:hover {
    background: var(--bg-hover);
}

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

/* Documents List */
.documents-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.doc-item {
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.doc-item:hover {
    background: var(--bg-hover);
    border-color: var(--accent-purple);
}

.doc-item.active {
    background: var(--bg-active);
    border-color: var(--accent-purple);
}

.doc-item-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.doc-item-meta {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
}

/* ========================================
   EDITOR CONTAINER
   ======================================== */
.editor-container {
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
}

/* Toolbar */
.editor-toolbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.toolbar-group {
    display: flex;
    gap: 0.25rem;
}

.toolbar-btn {
    padding: 0.4rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.toolbar-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent-purple);
}

.toolbar-separator {
    width: 1px;
    height: 1.5rem;
    background: var(--border-color);
}

/* Editor Workspace */
.editor-workspace {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    overflow: hidden;
    height: 100%;
}

.editor-pane,
.preview-pane {
    padding: 2rem;
    height: calc(100vh - 145px);
}

.editor-pane {
    background: var(--bg-editor);
    border-right: 1px solid var(--border-color);
    overflow: hidden; /* Pas de scroll parent, seulement textarea! */
}

.preview-pane {
    background: var(--bg-primary);
    overflow-y: auto; /* Scroll pour le preview! */
}

/* Editor Textarea */
#markdown-editor {
    width: 100%;
    height: 100%;
    min-height: 100%;
    background: transparent;
    border: none;
    color: var(--text-editor);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    line-height: 1.8;
    resize: none;
    outline: none;
}

#markdown-editor::placeholder {
    color: var(--text-tertiary);
}

/* ========================================
   MARKDOWN PREVIEW
   ======================================== */
.markdown-preview {
    font-family: var(--font-sans);
    color: var(--text-primary);
    line-height: 1.8;
    max-width: 900px;
}

.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3,
.markdown-preview h4,
.markdown-preview h5,
.markdown-preview h6 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
    color: var(--accent-purple);
}

.markdown-preview h1 {
    font-size: 2rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.markdown-preview h2 {
    font-size: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.markdown-preview h3 {
    font-size: 1.25rem;
}

.markdown-preview p {
    margin-bottom: 1rem;
}

.markdown-preview a {
    color: var(--accent-blue);
    text-decoration: none;
}

.markdown-preview a:hover {
    text-decoration: underline;
}

.markdown-preview code {
    background: var(--bg-tertiary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--accent-pink);
}

.markdown-preview pre {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
}

.markdown-preview pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
}

.markdown-preview blockquote {
    border-left: 4px solid var(--accent-purple);
    padding-left: 1rem;
    margin: 1rem 0;
    color: var(--text-secondary);
    font-style: italic;
}

.markdown-preview ul,
.markdown-preview ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.markdown-preview li {
    margin-bottom: 0.5rem;
}

.markdown-preview table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.markdown-preview th,
.markdown-preview td {
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    text-align: left;
}

.markdown-preview th {
    background: var(--bg-tertiary);
    font-weight: 600;
}

.markdown-preview img {
    max-width: 100%;
    border-radius: 8px;
    margin: 1rem 0;
}

.markdown-preview hr {
    border: none;
    border-top: 2px solid var(--border-color);
    margin: 2rem 0;
}

/* Task Lists */
.markdown-preview input[type="checkbox"] {
    margin-right: 0.5rem;
}

/* ========================================
   PREVIEW THEMES
   ======================================== */
/* Elysia Dark Theme (Default) */
.markdown-preview.theme-elysia {
    /* Uses default dark theme variables */
}

/* GitHub Light Theme */
.markdown-preview.theme-github {
    background: #ffffff;
    color: #24292f;
    padding: 2rem;
    border-radius: 8px;
}

.markdown-preview.theme-github h1,
.markdown-preview.theme-github h2,
.markdown-preview.theme-github h3,
.markdown-preview.theme-github h4,
.markdown-preview.theme-github h5,
.markdown-preview.theme-github h6 {
    color: #24292f;
    border-bottom-color: #d0d7de;
}

.markdown-preview.theme-github h1 {
    border-bottom: 1px solid #d0d7de;
    padding-bottom: 0.3em;
}

.markdown-preview.theme-github h2 {
    border-bottom: 1px solid #d0d7de;
    padding-bottom: 0.3em;
}

.markdown-preview.theme-github a {
    color: #0969da;
}

.markdown-preview.theme-github code {
    background: rgba(175, 184, 193, 0.2);
    color: #24292f;
    padding: 0.2em 0.4em;
    border-radius: 6px;
    font-size: 85%;
}

.markdown-preview.theme-github pre {
    background: #f6f8fa;
    border: 1px solid #d0d7de;
    border-radius: 6px;
    padding: 16px;
    overflow-x: auto;
}

.markdown-preview.theme-github pre code {
    background: none;
    border: none;
    padding: 0;
    color: #24292f;
}

.markdown-preview.theme-github blockquote {
    border-left: 4px solid #d0d7de;
    color: #57606a;
    padding: 0 1em;
}

.markdown-preview.theme-github table {
    border-collapse: collapse;
    width: 100%;
}

.markdown-preview.theme-github th,
.markdown-preview.theme-github td {
    border: 1px solid #d0d7de;
    padding: 6px 13px;
}

.markdown-preview.theme-github th {
    background: #f6f8fa;
    font-weight: 600;
}

.markdown-preview.theme-github tr:nth-child(2n) {
    background: #f6f8fa;
}

.markdown-preview.theme-github hr {
    border: none;
    border-top: 1px solid #d0d7de;
    margin: 24px 0;
}

.markdown-preview.theme-github img {
    max-width: 100%;
    border-radius: 6px;
    border: 1px solid #d0d7de;
}

/* ========================================
   BUTTONS
   ======================================== */
button {
    font-family: var(--font-sans);
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: 6px;
}

.btn-primary:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

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

.btn-icon {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    font-size: 1.2rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.btn-icon:hover {
    background: var(--bg-hover);
    border-color: var(--accent-purple);
}

.btn-icon-small {
    background: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    padding: 0;
    width: 1.5rem;
    height: 1.5rem;
}

.btn-icon-small:hover {
    color: var(--error);
}

/* ========================================
   MODALS
   ======================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
}

.modal-large {
    max-width: 900px;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.25rem;
}

.modal-close {
    background: none;
    color: var(--text-secondary);
    font-size: 2rem;
    padding: 0;
    width: 2rem;
    height: 2rem;
}

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

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* ========================================
   FORM ELEMENTS
   ======================================== */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group select {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-purple);
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.form-group input[type="checkbox"] {
    margin-right: 0.5rem;
}

/* ========================================
   EXPORT MODAL
   ======================================== */
.export-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.export-btn {
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

.export-btn:hover {
    border-color: var(--accent-purple);
    background: var(--bg-hover);
    transform: translateY(-2px);
}

.export-icon {
    font-size: 2.5rem;
}

.export-label {
    font-weight: 600;
    color: var(--text-primary);
}

/* ========================================
   AI TOOLS
   ======================================== */
.ai-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.ai-tool-card {
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}

.ai-tool-card:hover {
    border-color: var(--accent-purple);
    background: var(--bg-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.tool-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.75rem;
}

.ai-tool-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.ai-tool-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ========================================
   TEMPLATES
   ======================================== */
.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.template-card {
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.template-card:hover {
    border-color: var(--accent-purple);
    transform: translateY(-2px);
}

.template-name {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.template-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.template-category {
    display: inline-block;
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    background: var(--gradient-primary);
    border-radius: 4px;
    color: white;
    font-weight: 600;
}

/* ========================================
   TOAST NOTIFICATIONS
   ======================================== */
#toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    min-width: 300px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--error);
}

.toast.warning {
    border-left: 4px solid var(--warning);
}

.toast.info {
    border-left: 4px solid var(--info);
}

.toast-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
    color: var(--text-primary);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.toast-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

@keyframes slideOut {
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ========================================
   EMPTY STATE
   ======================================== */
.empty-state {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-tertiary);
}

.empty-state .hint {
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* ========================================
   CONTEXT MENU
   ======================================== */
.context-menu {
    position: fixed;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem 0;
    min-width: 200px;
    box-shadow: var(--shadow-lg);
    z-index: 1500;
    animation: contextMenuAppear 0.15s ease;
}

@keyframes contextMenuAppear {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-5px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.context-menu-item {
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: background 0.15s;
    color: var(--text-primary);
}

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

.context-menu-item.danger {
    color: var(--error);
}

.context-menu-item.danger:hover {
    background: rgba(248, 113, 113, 0.1);
}

.context-icon {
    font-size: 1.1rem;
    width: 1.5rem;
    text-align: center;
}

.context-menu-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.5rem 0;
}

/* ========================================
   SCROLLBAR
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-purple);
}

/* ========================================
   RESPONSIVE - LARGE SCREENS (1440px+)
   ======================================== */
@media (min-width: 1440px) {
    .editor-workspace {
        grid-template-columns: 1fr 1fr;
    }

    .markdown-preview {
        max-width: 1000px;
        margin: 0 auto;
    }

    .modal-content {
        max-width: 700px;
    }

    .modal-large {
        max-width: 1000px;
    }
}

/* ========================================
   RESPONSIVE - TABLET (768px - 1024px)
   ======================================== */
@media (max-width: 1024px) {
    /* Editor: Single pane with toggle */
    .editor-workspace {
        grid-template-columns: 1fr;
        position: relative;
    }

    .editor-pane,
    .preview-pane {
        height: calc(100vh - 145px);
    }

    /* Preview hidden by default on tablet, toggle via JS */
    .preview-pane {
        display: none;
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg-primary);
        z-index: 10;
    }

    .preview-pane.active {
        display: block;
    }

    /* Sidebar overlay on tablet */
    .main-container.sidebar-open {
        grid-template-columns: 280px 1fr;
    }

    /* Toolbar adjustments */
    .editor-toolbar {
        padding: 0.5rem;
        gap: 0.25rem;
        overflow-x: auto;
        flex-wrap: nowrap;
    }

    .toolbar-btn {
        padding: 0.35rem 0.6rem;
        font-size: 0.8rem;
        flex-shrink: 0;
    }

    /* Header */
    .app-header {
        padding: 0.5rem 1rem;
    }

    .logo {
        font-size: 1rem;
    }

    .version {
        font-size: 0.6rem;
        padding: 0.1rem 0.3rem;
    }

    /* Modals */
    .modal-content {
        width: 95%;
        max-height: 85vh;
    }

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

    .ai-tools-grid,
    .export-options,
    .templates-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   RESPONSIVE - MOBILE (< 768px)
   ======================================== */
@media (max-width: 768px) {
    /* Header: Stack layout */
    .app-header {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        padding: 0.5rem;
    }

    .header-left {
        justify-content: center;
    }

    .header-center {
        order: 2;
    }

    .header-right {
        order: 1;
        justify-content: center;
        flex-wrap: wrap;
        gap: 0.25rem;
    }

    .logo {
        font-size: 0.95rem;
    }

    .logo .icon {
        font-size: 1.2rem;
    }

    .version {
        display: none;
    }

    /* Document title */
    .doc-title-input {
        font-size: 0.95rem;
    }

    .doc-stats {
        font-size: 0.65rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .separator {
        margin: 0 0.25rem;
    }

    /* Buttons */
    .btn-icon {
        padding: 0.4rem 0.6rem;
        font-size: 1rem;
    }

    /* Sidebar: Full overlay on mobile */
    .sidebar-left {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 100;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar-left:not(.collapsed) {
        transform: translateX(0);
    }

    .main-container {
        grid-template-columns: 1fr !important;
    }

    .main-container.sidebar-open {
        grid-template-columns: 1fr !important;
    }

    /* Toolbar: Scrollable horizontal */
    .editor-toolbar {
        padding: 0.4rem;
        gap: 0.2rem;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .editor-toolbar::-webkit-scrollbar {
        display: none;
    }

    .toolbar-group {
        flex-shrink: 0;
    }

    .toolbar-btn {
        padding: 0.3rem 0.5rem;
        font-size: 0.75rem;
        min-width: 32px;
    }

    .toolbar-separator {
        height: 1rem;
        margin: 0 0.15rem;
    }

    /* Editor area */
    .editor-pane,
    .preview-pane {
        padding: 1rem;
        height: calc(100vh - 180px);
    }

    #markdown-editor {
        font-size: 0.9rem;
        line-height: 1.6;
    }

    /* Preview */
    .markdown-preview {
        font-size: 0.9rem;
        line-height: 1.7;
    }

    .markdown-preview h1 {
        font-size: 1.5rem;
    }

    .markdown-preview h2 {
        font-size: 1.25rem;
    }

    .markdown-preview h3 {
        font-size: 1.1rem;
    }

    /* Modals: Full screen on mobile */
    .modal-content {
        width: 100%;
        max-width: 100%;
        height: 100%;
        max-height: 100%;
        border-radius: 0;
    }

    .modal-header {
        padding: 1rem;
    }

    .modal-header h2 {
        font-size: 1.1rem;
    }

    .modal-body {
        padding: 1rem;
    }

    .modal-footer {
        padding: 0.75rem 1rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .modal-footer button {
        width: 100%;
    }

    /* AI Tools grid: Single column */
    .ai-tools-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .ai-tool-card {
        padding: 1rem;
    }

    .tool-icon {
        font-size: 2rem;
    }

    .ai-tool-card h3 {
        font-size: 1rem;
    }

    .ai-tool-card p {
        font-size: 0.8rem;
    }

    /* Export options: 2 columns */
    .export-options {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .export-btn {
        padding: 1rem;
    }

    .export-icon {
        font-size: 2rem;
    }

    .export-label {
        font-size: 0.75rem;
    }

    /* Templates grid */
    .templates-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .template-card {
        padding: 0.75rem;
    }

    /* Form elements */
    .form-group {
        margin-bottom: 1rem;
    }

    .form-group label {
        font-size: 0.9rem;
    }

    .form-group input,
    .form-group select {
        padding: 0.6rem;
        font-size: 0.9rem;
    }

    .form-group small {
        font-size: 0.7rem;
    }

    /* Toast on mobile */
    #toast-container {
        left: 0.5rem;
        right: 0.5rem;
        top: auto;
        bottom: 1rem;
    }

    .toast {
        min-width: auto;
        padding: 0.75rem 1rem;
    }

    .toast-message {
        font-size: 0.85rem;
    }

    /* Context menu */
    .context-menu {
        min-width: 160px;
    }

    .context-menu-item {
        padding: 0.6rem 0.75rem;
    }
}

/* ========================================
   RESPONSIVE - SMALL MOBILE (< 480px)
   ======================================== */
@media (max-width: 480px) {
    /* Even more compact header */
    .header-right {
        gap: 0.15rem;
    }

    .btn-icon {
        padding: 0.35rem 0.5rem;
        font-size: 0.9rem;
    }

    /* Toolbar: Essential buttons only visible */
    .toolbar-btn {
        padding: 0.25rem 0.4rem;
        font-size: 0.7rem;
        min-width: 28px;
    }

    /* Editor */
    .editor-pane,
    .preview-pane {
        padding: 0.75rem;
        height: calc(100vh - 160px);
    }

    #markdown-editor {
        font-size: 0.85rem;
    }

    /* Stats */
    .doc-stats {
        font-size: 0.6rem;
    }

    /* Document title */
    .doc-title-input {
        font-size: 0.85rem;
    }

    /* Export: Single column */
    .export-options {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   MOBILE VIEW TOGGLE (Editor/Preview)
   ======================================== */
.mobile-view-toggle {
    display: none;
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    z-index: 50;
    background: var(--gradient-primary);
    border: none;
    color: white;
    padding: 0.75rem 1rem;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    transition:
        transform 0.2s,
        box-shadow 0.2s;
}

.mobile-view-toggle:hover {
    transform: scale(1.05);
}

.mobile-view-toggle:active {
    transform: scale(0.95);
}

@media (max-width: 1024px) {
    .mobile-view-toggle {
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }
}

/* ========================================
   ACCESSIBILITY & TOUCH
   ======================================== */
@media (hover: none) and (pointer: coarse) {
    /* Touch-friendly targets */
    .toolbar-btn,
    .btn-icon,
    .filter-tab,
    .doc-item,
    .ai-tool-card,
    .export-btn,
    .template-card {
        min-height: 44px;
    }

    /* Remove hover effects on touch */
    .toolbar-btn:hover,
    .btn-icon:hover,
    .doc-item:hover {
        transform: none;
    }

    /* Active states for touch feedback */
    .toolbar-btn:active,
    .btn-icon:active {
        background: var(--bg-active);
        transform: scale(0.95);
    }
}

/* ========================================
   LANDSCAPE MOBILE
   ======================================== */
@media (max-height: 500px) and (orientation: landscape) {
    .app-header {
        padding: 0.25rem 0.5rem;
    }

    .logo {
        font-size: 0.9rem;
    }

    .editor-toolbar {
        padding: 0.25rem;
    }

    .editor-pane,
    .preview-pane {
        height: calc(100vh - 100px);
        padding: 0.5rem;
    }

    .modal-content {
        max-height: 95vh;
    }

    .modal-body {
        padding: 0.75rem;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    .app-header,
    .sidebar-left,
    .editor-toolbar,
    .editor-pane,
    .mobile-view-toggle,
    #toast-container {
        display: none !important;
    }

    .main-container {
        display: block !important;
    }

    .preview-pane {
        display: block !important;
        position: static !important;
        height: auto !important;
        padding: 0 !important;
    }

    .markdown-preview {
        max-width: 100%;
        color: black;
    }

    .markdown-preview a {
        color: blue;
        text-decoration: underline;
    }

    .markdown-preview pre,
    .markdown-preview code {
        background: #f5f5f5;
        border: 1px solid #ddd;
    }
}