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

:root {
    --primary-color: #4a6fa5;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --background: #f8f9fa;
    --card-bg: #ffffff;
    --text-dark: #212529;
    --text-light: #6c757d;
    --border-color: #dee2e6;
    --hover-bg: #e9ecef;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background);
    color: var(--text-dark);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
}

header h1 {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 600;
}

.header-actions {
    display: flex;
    gap: 10px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

.btn-primary:hover {
    background-color: #3d5a86;
}

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

.btn-secondary:hover {
    background-color: #5a6268;
}

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

.btn-success:hover {
    background-color: #218838;
}

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

.btn-danger:hover {
    background-color: #c82333;
}

/* Main Content */
.main-content {
    display: flex;
    gap: 30px;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--shadow);
    height: fit-content;
    position: sticky;
    top: 20px;
}

.sidebar h2 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.category-list {
    list-style: none;
}

.category-item {
    padding: 12px 15px;
    margin-bottom: 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.category-item:hover {
    background-color: var(--hover-bg);
}

.category-item.active {
    background-color: var(--primary-color);
    color: white;
}

.category-item.dragging {
    opacity: 0.5;
}

.category-item.drag-over {
    border: 2px dashed var(--primary-color);
    background-color: var(--hover-bg);
}

.category-name {
    flex: 1;
}

.category-count {
    background-color: var(--border-color);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.category-item.active .category-count {
    background-color: rgba(255, 255, 255, 0.3);
    color: white;
}

/* Prompts Area */
.prompts-area {
    flex: 1;
}

.prompts-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

/* Prompt Card */
.prompt-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    cursor: move;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.prompt-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.prompt-card.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.prompt-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 10px;
}

.prompt-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    flex: 1;
    word-break: break-word;
}

.prompt-description {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.5;
    max-height: 150px;
    overflow-y: auto;
    word-break: break-word;
    white-space: pre-wrap;
}

.prompt-description::-webkit-scrollbar {
    width: 6px;
}

.prompt-description::-webkit-scrollbar-track {
    background: var(--background);
    border-radius: 3px;
}

.prompt-description::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.prompt-description::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}

.prompt-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.btn-copy {
    flex: 1;
    padding: 8px 16px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
}

.btn-copy:hover {
    background-color: #3d5a86;
}

.btn-restore {
    flex: 1;
    padding: 8px 16px;
    background-color: var(--success-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
}

.btn-restore:hover {
    background-color: #218838;
}

.btn-delete-permanent {
    flex: 1;
    padding: 8px 16px;
    background-color: var(--danger-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
}

.btn-delete-permanent:hover {
    background-color: #c82333;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.modal-content {
    background-color: var(--card-bg);
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.5rem;
    color: var(--text-dark);
}

.close {
    font-size: 28px;
    font-weight: bold;
    color: var(--text-light);
    cursor: pointer;
    transition: color 0.2s ease;
}

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

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-dark);
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 150px;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 16px 24px;
    background-color: var(--text-dark);
    color: white;
    border-radius: 8px;
    box-shadow: var(--shadow-hover);
    z-index: 2000;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    pointer-events: none;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.empty-state h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

/* Responsive */
@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        position: static;
    }

    .prompts-container {
        grid-template-columns: 1fr;
    }

    header {
        flex-direction: column;
        gap: 20px;
        align-items: stretch;
    }

    .header-actions {
        flex-direction: column;
    }
}