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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 95%;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: white;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

h1 {
    font-size: 24px;
    margin-bottom: 10px;
}

.controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

button {
    background: #007bff;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

button:hover {
    background: #0056b3;
}

button.secondary {
    background: #6c757d;
}

button.secondary:hover {
    background: #545b62;
}

button.danger {
    background: #dc3545;
}

button.danger:hover {
    background: #c82333;
}

input[type="text"] {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    flex: 1;
    min-width: 200px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

@media (max-width: 1200px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .cards-grid {
        grid-template-columns: 1fr;
    }
}

.card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: relative;
    cursor: pointer;
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 10px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    flex: 1;
}

.card-actions {
    display: flex;
    gap: 5px;
}

.card-actions button {
    padding: 4px 8px;
    font-size: 12px;
}

.card-body {
    color: #555;
    overflow: hidden;
    word-wrap: break-word;
    max-height: 300px;
    overflow-y: auto;
}

.card-body pre {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 4px;
    overflow-x: auto;
}

.card-body code {
    background: #f8f9fa;
    padding: 2px 4px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

.card-body pre code {
    background: none;
    padding: 0;
}

.card-body img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    margin: 10px 0;
    display: block;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-top: 10px;
}

.tag {
    background: #e9ecef;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 12px;
    color: #495057;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
}

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

.modal-content {
    background: white;
    border-radius: 8px;
    padding: 30px;
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

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

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    resize: vertical;
    min-height: 300px;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

.view-modal .modal-content {
    max-width: 1000px;
}

.view-card-body {
    color: #555;
    overflow-x: auto;
}

.view-card-body pre {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 4px;
    overflow-x: auto;
}

.view-card-body code {
    background: #f8f9fa;
    padding: 2px 4px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

.view-card-body pre code {
    background: none;
    padding: 0;
}

.view-card-body img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    margin: 10px 0;
    display: block;
}

.shortcut-hint {
    font-size: 12px;
    color: #6c757d;
    margin-top: 5px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #6c757d;
}

.empty-state h2 {
    font-size: 20px;
    margin-bottom: 10px;
}