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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
header {
    text-align: center;
    color: white;
    margin-bottom: 30px;
    padding: 20px;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Card */
.card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card h2 {
    color: #667eea;
    margin-bottom: 20px;
    font-size: 1.5rem;
    border-bottom: 2px solid #667eea;
    padding-bottom: 10px;
}

.card h3 {
    color: #764ba2;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

/* Status Grid */
.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.status-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.status-item label {
    font-weight: 600;
    color: #555;
}

.status-item span {
    color: #333;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.badge-success {
    background: #4caf50;
    color: white;
}

.badge-error {
    background: #f44336;
    color: white;
}

.badge-pending {
    background: #ff9800;
    color: white;
}

/* Forms */
.form-section {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #eee;
}

.form-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.form-group label {
    font-weight: 600;
    color: #555;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 10px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-block;
    margin-right: 10px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
}

.btn-success {
    background: #4caf50;
    color: white;
}

.btn-success:hover {
    background: #45a049;
}

.btn-danger {
    background: #f44336;
    color: white;
}

.btn-danger:hover {
    background: #da190b;
}

.btn-secondary {
    background: #757575;
    color: white;
}

.btn-secondary:hover {
    background: #616161;
}

.btn-small {
    padding: 5px 10px;
    font-size: 0.9rem;
}

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

/* Result Display */
.result {
    margin-top: 15px;
    padding: 15px;
    border-radius: 6px;
    display: none;
}

.result.show {
    display: block;
}

.result.success {
    background: #e8f5e9;
    border: 1px solid #4caf50;
    color: #2e7d32;
}

.result.error {
    background: #ffebee;
    border: 1px solid #f44336;
    color: #c62828;
}

.result.info {
    background: #e3f2fd;
    border: 1px solid #2196f3;
    color: #1565c0;
}

/* Items Container */
.items-container {
    margin-top: 20px;
}

.item-card {
    background: #f5f5f5;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    border-left: 4px solid #667eea;
}

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

.item-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
}

.item-id {
    background: #667eea;
    color: white;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.85rem;
}

.item-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin-bottom: 15px;
}

.item-detail {
    display: flex;
    flex-direction: column;
}

.item-detail label {
    font-weight: 600;
    color: #666;
    font-size: 0.9rem;
}

.item-detail span {
    color: #333;
}

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

.empty-state {
    text-align: center;
    padding: 40px;
    color: #999;
}

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 15px;
    opacity: 0.5;
}

/* Loading Spinner */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .status-grid {
        grid-template-columns: 1fr;
    }

    .item-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .button-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        margin-right: 0;
    }
}