:root {
    /* 去除了默认背景图变量 */
    --accent: #d4a373;
    --text: #f3e5ab;
    --glass: rgba(0, 0, 0, 0.5);
}

body {
    margin: 0; padding: 0; min-height: 100vh;
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text); overflow-x: hidden;
    background-color: #1a1a1a; /* 兜底深色背景 */
}

#bg-layer {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    z-index: -1; 
    /* 默认不设 background-image，由 JS 控制 */
    background-color: #1a1a1a; 
    background-size: cover; background-position: center;
    transition: background-image 0.8s ease;
}

.main-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px 30px; margin: 20px;
    background: var(--glass); backdrop-filter: blur(20px);
    border-radius: 30px; border: 1px solid rgba(255,255,255,0.15);
}

.logo { font-size: 1.2rem; font-weight: bold; }

.btn {
    border: none; padding: 10px 24px; border-radius: 40px;
    cursor: pointer; font-size: 14px; transition: 0.3s;
    margin-left: 8px; font-weight: 500;
}
.btn-glass { background: rgba(255,255,255,0.1); color: white; border: 1px solid rgba(255,255,255,0.2); }
.btn-gold { background: var(--accent); color: #2c1e12; }
.btn-green { background: #4a7c44; color: white; }
.btn:hover { opacity: 0.8; transform: scale(1.02); }

.grid { padding: 10px 30px; }
.category-group { margin-bottom: 40px; }
.cat-title { font-size: 1.2rem; margin-bottom: 20px; border-left: 6px solid var(--accent); padding-left: 15px; }

.cat-grid { 
    display: grid; gap: 20px; 
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); 
}

@media (max-width: 600px) {
    .main-header { margin: 10px; padding: 10px 20px; }
    .grid { padding: 5px 15px; }
    .cat-grid { gap: 12px; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); }
    .btn { padding: 8px 15px; font-size: 12px; }
}

.glass-card {
    background: rgba(255,255,255,0.08); backdrop-filter: blur(15px);
    border-radius: 25px; border: 1px solid rgba(255,255,255,0.1);
    padding: 20px 10px; text-align: center; transition: 0.3s;
    position: relative;
}
.card:hover { background: rgba(255,255,255,0.15); }
.card a { text-decoration: none; color: white; display: block; }

/* 图标：保持纯净，无复杂占位符 */
.card img { 
    width: 32px; height: 32px; margin-bottom: 10px; border-radius: 10px; 
    background: rgba(255,255,255,0.9); padding: 6px; object-fit: contain;
}
.card div { font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; padding: 0 5px; }

.delete-badge {
    display: none; position: absolute; top: -8px; right: -8px;
    width: 28px; height: 28px; background: #ff4d4d; color: white;
    border-radius: 50%; font-size: 18px; line-height: 28px;
    text-align: center; font-weight: bold; cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.4); border: 2px solid white; z-index: 10;
}
.edit-mode .delete-badge { display: block; }
.edit-mode .card { animation: shake 0.3s infinite; }
@keyframes shake { 0%{transform:rotate(0)} 25%{transform:rotate(0.5deg)} 75%{transform:rotate(-0.5deg)} 100%{transform:rotate(0)} }

.modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.85); z-index: 1000; justify-content: center; align-items: center; }
.modal-content { width: 90%; max-width: 450px; padding: 30px; box-sizing: border-box; }
.hub-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; margin-bottom: 20px; }
.hub-item { 
    background: rgba(255,255,255,0.05); padding: 25px 10px; border-radius: 20px; 
    cursor: pointer; border: 1px solid rgba(255,255,255,0.1); font-weight: bold;
}
.hub-item:hover { background: var(--accent); color: #222; }

input, select { width: 100%; padding: 14px; margin: 10px 0; background: rgba(0,0,0,0.5); border: 1px solid rgba(255,255,255,0.2); color: white; border-radius: 30px; box-sizing: border-box;}
.action-btn { width: 100%; padding: 15px; border: none; border-radius: 40px; background: var(--accent); color: #222; font-weight: bold; cursor: pointer; margin-top: 10px; font-size: 16px; }
.action-btn.cancel { background: #444; color: #aaa; }
.action-btn.danger { background: #8e2a2a; color: white; }
.action-btn:active { transform: scale(0.98); }

.wp-apply-btn { padding:0 20px; border-radius:30px; border:none; background:var(--accent); cursor:pointer; font-weight:bold; color:#222; }

.import-box { margin: 20px 0; }
.btn-import { 
    width: 100%; padding: 15px; background: transparent; 
    border: 1px dashed var(--accent); color: var(--accent); 
    border-radius: 20px; cursor: pointer;
}

.wallpaper-config { background: rgba(0,0,0,0.3); padding: 20px; border-radius: 20px; }
.wp-action-group { display: flex; gap: 10px; margin-bottom: 10px; }
.wp-btn { flex: 1; padding: 12px; border: none; border-radius: 30px; cursor: pointer; font-weight: bold; color: white; font-size: 14px; transition: 0.3s; }
.wp-btn.rand { background: #5a9bd5; }

/* 选定按钮的交互状态样式 */
.wp-btn.fix { background: #444; color: #888; pointer-events: none; } /* 默认不可点 */
.wp-btn.fix.ready { background: #ed7d31; color: white; pointer-events: auto; box-shadow: 0 0 10px rgba(237, 125, 49, 0.4); } /* 准备选定 */
.wp-btn.fix.locked { background: #4a7c44; color: white; pointer-events: auto; } /* 已锁定 */

#exit-edit-btn { display:none; position:fixed; bottom:40px; left:50%; transform:translateX(-50%); z-index:2000; background:#ff4d4d; color:white; border:none; padding:15px 40px; border-radius:40px; font-weight:bold; box-shadow: 0 10px 20px rgba(0,0,0,0.5); }