:root {
    /* Palette "Candy Glass" - Vibrante et Esthétique */
    --primary-color: #6366f1; /* Indigo vibrant */
    --primary-hover: #4f46e5;
    --primary-light: #e0e7ff;
    
    --secondary-color: #ec4899; /* Rose dynamique */
    --secondary-light: #fce7f3;

    --accent-color: #06b6d4; /* Cyan pour les touches de fraîcheur */
    --success-color: #10b981; /* Emeraude */
    
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
    --gradient-surface: linear-gradient(180deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.95) 100%);
    
    --bg-color: #f0f9ff; /* Bleu ciel très pâle */
    --bg-gradient: radial-gradient(circle at top left, #e0e7ff, transparent 40%),
                   radial-gradient(circle at bottom right, #fce7f3, transparent 40%);
    
    --sidebar-bg: rgba(255, 255, 255, 0.75);
    --header-bg: rgba(255, 255, 255, 0.85);
    
    --text-main: #1e293b;
    --text-secondary: #64748b;
    --border-color: rgba(226, 232, 240, 0.8);
    
    --editor-bg: #ffffff;
    --editor-shadow: 
        0 20px 25px -5px rgba(0, 0, 0, 0.05), 
        0 8px 10px -6px rgba(0, 0, 0, 0.01),
        0 0 0 1px rgba(0, 0, 0, 0.02);
    
    --font-ui: 'Inter', system-ui, -apple-system, sans-serif;
    --font-content: 'Merriweather', Georgia, serif;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --glass-blur: blur(16px);
    --glass-border: 1px solid rgba(255, 255, 255, 0.5);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --primary-color: #818cf8;
    --primary-hover: #6366f1;
    --primary-light: #1e1b4b;
    
    --secondary-color: #f472b6;
    --secondary-light: #831843;
    
    --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --gradient-surface: linear-gradient(180deg, rgba(30, 41, 59, 0.9) 0%, rgba(30, 41, 59, 0.95) 100%);
    
    --bg-color: #0f172a;
    --bg-gradient: radial-gradient(circle at top left, #1e1b4b, transparent 40%),
                   radial-gradient(circle at bottom right, #312e81, transparent 40%);
    
    --sidebar-bg: rgba(30, 41, 59, 0.75);
    --header-bg: rgba(15, 23, 42, 0.85);
    
    --text-main: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: rgba(51, 65, 85, 0.8);
    
    --editor-bg: #1e293b;
    --editor-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: var(--font-ui);
    background-color: var(--bg-color);
    background-image: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text-main);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: background-color 0.3s, color 0.3s;
}

/* --- Header --- */
header {
    height: 64px;
    background-color: var(--header-bg);
    border-bottom: var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
    backdrop-filter: var(--glass-blur);
    z-index: 20;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
}

.logo {
    font-weight: 800;
    font-size: 1.4rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 12px;
    letter-spacing: -0.03em;
}

.logo i {
    font-size: 1.6rem;
    -webkit-text-fill-color: initial;
    color: #6366f1; /* Fallback icon color */
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-controls button {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid transparent;
    cursor: pointer;
    font-size: 1.1rem;
    color: var(--text-secondary);
    width: 42px;
    height: 42px;
    border-radius: 50%; /* Boutons ronds */
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 8px;
}

.header-controls button:hover {
    background-color: white;
    color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transform: rotate(15deg);
}

/* --- Layout --- */
.workspace {
    flex: 1;
    display: flex;
    overflow: hidden;
    height: calc(100vh - 64px);
    gap: 0; /* Pas d'espace, les bordures gèrent la séparation */
}

/* --- Sidebars (Glassmorphism) --- */
.sidebar {
    width: 320px;
    background-color: var(--sidebar-bg);
    border-right: var(--glass-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    backdrop-filter: var(--glass-blur);
    transition: width 0.3s ease;
}

#tools {
    border-left: var(--glass-border);
    border-right: none;
    width: 360px;
}

.panel-header {
    padding: 24px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: var(--glass-border);
    background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
}

.panel-header h3 {
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.08em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.panel-header h3::before {
    content: '';
    display: block;
    width: 4px;
    height: 16px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.actions button {
    background: rgba(255,255,255,0.5);
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 8px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.actions button:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
    transform: scale(1.1);
}

.scrollable-content {
    flex: 1;
    overflow-y: auto;
    padding-bottom: 20px;
}

/* --- File Tree --- */
.file-tree {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.tree-item {
    padding: 10px 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-main);
    transition: var(--transition);
    margin-bottom: 4px;
    border: 1px solid transparent;
}

.tree-item:hover {
    background-color: rgba(255, 255, 255, 0.6);
    transform: translateX(4px);
}

.tree-item.active {
    background: linear-gradient(to right, var(--primary-light), rgba(255,255,255,0));
    color: var(--primary-color);
    border-left: 3px solid var(--primary-color);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.tree-item i {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.tree-item.active i {
    color: var(--primary-color);
}

.folder-content {
    margin-left: 18px;
    padding-left: 10px;
    border-left: 2px solid var(--border-color);
}

/* --- Tools Panel Styling --- */
.tool-group {
    padding: 24px;
    border-bottom: var(--glass-border);
    background: rgba(255,255,255,0.1);
}

.tool-group h4 {
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--primary-color);
    margin-bottom: 16px;
    letter-spacing: 0.05em;
    opacity: 0.8;
}

.input-group {
    margin-bottom: 16px;
}

.input-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 8px;
    display: block;
}

.input-group textarea, .input-group select, .input-group input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: rgba(255,255,255,0.6);
    color: var(--text-main);
    font-family: var(--font-ui);
    font-size: 0.9rem;
    transition: var(--transition);
    backdrop-filter: blur(4px);
}

.input-group textarea:focus, .input-group select:focus, .input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
    background-color: #fff;
}

/* --- Buttons --- */
.button-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.ai-btn {
    padding: 14px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    position: relative;
    overflow: hidden;
}

.ai-btn i {
    font-size: 1.4rem;
    color: var(--primary-color);
    transition: var(--transition);
    background: var(--primary-light);
    padding: 10px;
    border-radius: 50%;
}

.ai-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px -5px rgba(99, 102, 241, 0.2);
    border-color: var(--primary-color);
}

.ai-btn:hover i {
    background: var(--primary-color);
    color: white;
    transform: rotate(10deg);
}

/* Secondary Tools */
.ai-btn.secondary {
    flex-direction: row;
    width: 100%;
    margin-bottom: 12px;
    justify-content: flex-start;
    padding: 12px 20px;
    background: transparent;
    border: 1px dashed var(--border-color);
}

.ai-btn.secondary i {
    font-size: 1rem;
    padding: 6px;
    margin-right: 8px;
    background: transparent;
}

.ai-btn.secondary:hover {
    background: white;
    border-style: solid;
}

/* Action Buttons */
.action-btn {
    width: 100%;
    padding: 14px;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    transition: var(--transition);
}

.action-btn:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

/* --- Editor Area --- */
.editor-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: transparent;
    position: relative;
    overflow: hidden; 
    height: 100%; 
}

.editor-toolbar-container {
    padding: 12px 32px;
    background-color: rgba(255,255,255,0.4);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 54px;
    flex-shrink: 0;
    backdrop-filter: blur(8px);
}

#doc-breadcrumb {
    font-family: var(--font-ui);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

#doc-breadcrumb::before {
    content: '\f15c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 400;
    color: var(--primary-color);
}

#save-status {
    font-size: 0.75rem;
    color: var(--success-color);
    background: #ecfdf5;
    padding: 4px 12px;
    border-radius: 100px;
    border: 1px solid #a7f3d0;
    font-weight: 600;
}

#editor-container {
    flex: 1; 
    overflow-y: auto !important;
    padding: 0;
    display: block;
    position: relative;
    height: 100%;
}

/* Quill Customization */
.ql-toolbar {
    border: none !important;
    border-bottom: 1px solid var(--border-color) !important;
    background-color: rgba(255,255,255,0.8) !important;
    padding: 14px 24px !important;
    font-family: var(--font-ui) !important;
    width: 100%;
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: blur(10px);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.ql-formats {
    margin-right: 12px !important;
    border-right: 1px solid #e5e7eb;
    padding-right: 12px;
}
.ql-formats:last-child {
    border-right: none;
}

.ql-toolbar button {
    border-radius: 6px !important;
    transition: all 0.2s !important;
    color: var(--text-secondary) !important;
}

.ql-toolbar button:hover, .ql-toolbar button.ql-active {
    background-color: var(--primary-light) !important;
    color: var(--primary-color) !important;
}

.ql-toolbar button:hover .ql-stroke, .ql-toolbar button.ql-active .ql-stroke {
    stroke: var(--primary-color) !important;
}

.ql-toolbar button:hover .ql-fill, .ql-toolbar button.ql-active .ql-fill {
    fill: var(--primary-color) !important;
}

/* --- Editor Paper --- */
.ql-container {
    border: none !important;
    font-size: 16px !important;
    height: auto !important;
    width: 100%;
    max-width: 900px; /* Plus large pour confort */
    margin: 40px auto;
    display: block;
    overflow: visible !important;
    padding-bottom: 100px;
}

.ql-editor {
    background-color: var(--editor-bg);
    min-height: 1123px;
    width: 100%;
    padding: 60px 60px;
    box-shadow: var(--editor-shadow);
    border-radius: 4px; /* Coin papier */
    margin-bottom: 40px;
    overflow-y: visible !important;
    height: auto !important;
    
    /* Typography "Livre" */
    font-family: var(--font-content);
    font-size: 11pt;
    line-height: 1.6;
    color: #334155; 
    text-align: justify;
}

/* --- Typography Styling (Aesthetic) --- */
.ql-editor h1 {
    font-family: var(--font-ui);
    font-weight: 800;
    font-size: 2.2rem;
    text-align: center;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 1.5em 0 1em 0;
    padding-bottom: 0.5em;
    position: relative;
}

.ql-editor h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.ql-editor h2 {
    font-family: var(--font-ui);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
    margin: 1.5em 0 0.8em 0;
    padding-left: 16px;
    border-left: 4px solid var(--secondary-color);
    background: linear-gradient(to right, var(--primary-light), transparent);
    padding: 8px 16px;
    border-radius: 0 8px 8px 0;
}

.ql-editor h3 {
    font-family: var(--font-ui);
    font-weight: 600;
    font-size: 1.2rem;
    color: #475569;
    margin: 1.2em 0 0.5em 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.ql-editor h3::before {
    content: '•';
    color: var(--accent-color);
    font-size: 1.5em;
    line-height: 1;
}

.ql-editor p {
    margin-bottom: 1em;
}

.ql-editor table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 2em 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
}

.ql-editor th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    padding: 14px 16px;
    text-align: left;
    font-family: var(--font-ui);
}

.ql-editor td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.ql-editor tr:nth-child(even) {
    background-color: #f8fafc;
}

.ql-editor blockquote {
    border-left: 4px solid var(--secondary-color);
    background: linear-gradient(to right, #fff1f2, transparent);
    padding: 16px 24px;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--text-main);
    margin: 2em 0;
    position: relative;
}

.ql-editor blockquote::before {
    content: '\201C';
    position: absolute;
    top: -10px;
    left: 10px;
    font-size: 4rem;
    color: rgba(236, 72, 153, 0.2);
    font-family: serif;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 99px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Tooltip Styles */
.btn-tooltip {
    position: relative;
}
.btn-tooltip:hover::after {
    content: attr(aria-label);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #1e293b;
    color: white;
    padding: 6px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 1000;
    margin-bottom: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    pointer-events: none;
}

/* --- Print / PDF Styles --- */
@media print {
    html, body {
        height: auto !important;
        overflow: visible !important;
        background: white !important;
    }
    header, .sidebar, .editor-toolbar-container, .ql-toolbar, #config-modal, .modal-overlay {
        display: none !important;
    }
    .workspace, .editor-area, #editor-container {
        height: auto !important;
        overflow: visible !important;
        display: block !important;
        padding: 0 !important;
        margin: 0 !important;
        position: static !important;
        background: white !important;
    }
    .ql-editor {
        box-shadow: none !important;
        padding: 0 !important;
        margin: 0 !important;
        border: none !important;
        width: 100% !important;
        max-width: 100% !important;
        background: white !important;
    }
    .ql-editor, .ql-editor * {
        color: black !important;
    }
    /* Reset heading styles for print to be cleaner */
    .ql-editor h1 {
        background: none;
        -webkit-text-fill-color: black;
        color: black;
        border-bottom: 1px solid black;
    }
    .ql-editor h1::after { display: none; }
    .ql-editor h2 {
        background: none;
        color: black;
        border-left: 3px solid black;
        padding-left: 10px;
    }
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    visibility: hidden;
    opacity: 0;
    transition: all 0.3s;
}

.modal-overlay.open {
    visibility: visible;
    opacity: 1;
}

.modal {
    background-color: white;
    padding: 30px;
    border-radius: var(--radius-lg);
    width: 400px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.modal h3 {
    margin-bottom: 24px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
}

.modal-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

#btn-cancel-config {
    padding: 8px 16px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 600;
}