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

body {
    font-family: 'Arial', sans-serif;
    background-color: #f5f5f5;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

.category-selector {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.category-selector select, .category-selector button {
    padding: 8px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.category-selector input {
    padding: 8px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    flex-grow: 1;
    min-width: 200px;
}

.category-selector button {
    background-color: #4CAF50;
    color: white;
    cursor: pointer;
    border: none;
}

.category-selector button:hover {
    background-color: #45a049;
}

#custom-input {
    margin-bottom: 20px;
}

#custom-input textarea {
    width: 100%;
    height: 100px;
    padding: 8px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.tier-list {
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 4px;
    overflow: hidden;
}

.tier-row {
    display: flex;
    min-height: 100px;
    border-bottom: 1px solid #ddd;
}

.tier-row:last-child {
    border-bottom: none;
}

.tier-label {
    width: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: white;
}

.s-tier .tier-label { background-color: #FF7F7F; }
.a-tier .tier-label { background-color: #FFBF7F; }
.b-tier .tier-label { background-color: #FFDF7F; }
.c-tier .tier-label { background-color: #FFFF7F; }
.d-tier .tier-label { background-color: #BFFF7F; }
.f-tier .tier-label { background-color: #7FFFFF; }

.tier-items {
    flex-grow: 1;
    min-height: 100px;
    padding: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    background-color: #f9f9f9;
}

#items-container {
    margin-top: 30px;
}

#items-container h3 {
    margin-bottom: 10px;
}

#items-pool {
    border: 1px solid #ddd;
    padding: 15px;
    min-height: 100px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    background-color: #f9f9f9;
}

.item {
    padding: 10px;
    background-color: white;
    border-radius: 4px;
    border: 1px solid #ddd;
    cursor: move;
    font-size: 14px;
    user-select: none;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.item:hover {
    transform: translateY(-2px);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
}

#loading {
    text-align: center;
    margin: 20px 0;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 2s linear infinite;
    margin: 0 auto 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.input-hint {
    font-size: 12px;
    color: #666;
    width: 100%;
    margin-top: 5px;
    font-style: italic;
}

.actions {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.actions button {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#reset-btn {
    background-color: #f44336;
    color: white;
}

#reset-btn:hover {
    background-color: #d32f2f;
}

#save-btn {
    background-color: #2196F3;
    color: white;
}

#save-btn:hover {
    background-color: #0b7dda;
}

.hidden {
    display: none;
}