:root {
    --primary: #38bdf8;
    --primary-hover: #0284c7;
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --border-color: #334155;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    margin: 0;
    padding: 80px 20px 20px;
    display: flex;
    justify-content: center;
}

.home-link {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 20;
    display: inline-block;
    padding: 10px 18px;
    background: #0f172a;
    border: 1px solid var(--border-color);
    color: var(--primary);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 700;
    transition: transform 0.2s, border-color 0.2s, background-color 0.2s;
}

.home-link:hover {
    transform: translateY(-1px);
    border-color: var(--primary);
    background: #1e293b;
}

.container {
    max-width: 1200px;
    width: 100%;
    background: var(--card-bg);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
    padding: 30px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    margin: 0 0 10px 0;
    color: var(--primary);
}

.upload-section {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    padding: 20px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    justify-content: center;
    background-color: #0f172a;
}

#pdf-upload,
#pdf-add {
    display: none;
}

.upload-btn {
    background-color: var(--primary);
    color: #ffffff;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}

.upload-btn:hover {
    background-color: var(--primary-hover);
}

.hidden {
    display: none !important;
}

#workspace {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    align-items: flex-start;
}

.pdf-viewer {
    flex: 1.5;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    background: #0f172a;
    position: sticky;
    top: 20px;
    align-self: flex-start;
    max-height: calc(100vh - 40px);
}

.controls {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.controls button {
    padding: 8px 15px;
    border: 1px solid var(--border-color);
    background: #1e293b;
    color: var(--text-main);
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

.controls button:hover:not(:disabled) {
    background: #0f172a;
}

.controls button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.canvas-container {
    width: 100%;
    flex: 1;
    overflow: auto;
    display: flex;
    justify-content: center;
    border: 1px solid var(--border-color);
    background: #020617;
}

canvas {
    max-width: 100%;
    height: auto;
    display: block;
}

.tools {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.ocr-section, .save-section {
    background: #0f172a;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

h3 {
    margin-top: 0;
    font-size: 1.1em;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.action-btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    margin-bottom: 10px;
    background: #334155;
    color: #ffffff;
    transition: background 0.3s;
}

.action-btn:hover:not(:disabled) {
    background: #475569;
}

.action-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.action-btn.primary {
    background: var(--primary);
    color: white;
}

.action-btn.primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

/* Styles pour la sélection de pages */
.selection-group {
    margin-bottom: 15px;
    background: #020617;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.selection-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    font-size: 0.9em;
}

.page-checkboxes-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
    max-height: 150px;
    overflow-y: auto;
    background: #1e293b;
    padding: 10px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.page-checkbox-item {
    display: flex;
    align-items: center;
    gap: 6px;
    background: #0f172a;
    padding: 6px 10px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    font-size: 0.9em;
    cursor: pointer;
    user-select: none;
}

.page-checkbox-item:hover {
    border-color: var(--primary);
}

.page-checkbox-item input[type="checkbox"] {
    cursor: pointer;
    margin: 0;
}

.action-btn.secondary {
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 8px;
    font-size: 0.9em;
    margin-bottom: 0;
    flex: 1;
}

.action-btn.secondary:hover:not(:disabled) {
    background: #1e293b;
    border-color: var(--primary);
}

textarea {
    width: 100%;
    height: 180px;
    resize: vertical;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    box-sizing: border-box;
    font-size: 14px;
    background: #1e293b;
    color: var(--text-main);
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    font-size: 0.9em;
}

.input-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 1em;
    background: #1e293b;
    color: var(--text-main);
}

#ocr-status {
    font-size: 0.9em;
    color: var(--text-muted);
    margin-bottom: 10px;
    min-height: 20px;
}

#name-settings-status {
    font-size: 0.9em;
    color: var(--text-muted);
    margin-bottom: 10px;
    min-height: 20px;
}

@media (max-width: 768px) {
    body {
        padding-top: 64px;
    }

    .home-link {
        top: 10px;
        left: 10px;
        padding: 8px 12px;
        font-size: 0.9em;
    }
}