:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --danger: #dc2626;
    --success: #16a34a;
    --sidebar-bg: #ffffff;
    --main-bg: #f1f5f9;
    --text-main: #1e293b;
    --text-sub: #64748b;
    --border-color: #e2e8f0;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--text-main); background: var(--main-bg); overflow: hidden; }
li { line-height: 1.8em; list-style-type: none; }
#app-container { display: flex; height: 100vh; }
.sub-label { display: block; font-weight: 600; font-size: 0.85rem; margin-bottom: 8px; color: var(--text-main); }

.sidebar { width: 340px; background: var(--sidebar-bg); border-right: 1px solid var(--border-color); display: flex; flex-direction: column; z-index: 100; box-shadow: 4px 0 10px rgba(0,0,0,0.02); }
.sidebar-header { border-bottom: 1px solid var(--border-color); padding: 20px; }
.sidebar-header h1 { margin: 0; font-size: 1.2rem; color: var(--primary); }
.sidebar-header p { font-size: 0.8rem; color: var(--text-sub); margin-top: 10px; margin-bottom: 15px; }

.template-select { width: 100%; padding: 10px; border: 1px solid var(--border-color); border-radius: 6px; font-size: 0.9rem; color: var(--text-main); outline: none; background-color: #f8fafc; cursor: pointer; }
.template-select:focus { border-color: var(--primary); }

.scroll-area {
	flex: 1;
	overflow-y: auto;
	padding-top: 15px;
	padding-right: 15px;
	padding-left: 15px;
}

/* 卡片 */
.card { background: #f8fafc; border: 1px solid var(--border-color);  margin-bottom: 15px; }
.card-title { padding: 10px 15px; background: #fff; border-bottom: 1px solid var(--border-color); font-weight: 600; font-size: 0.85rem; display: flex; align-items: center; gap: 8px; justify-content: space-between; }
.card-body { padding: 12px; }

/* 输入框通用 */
.full-width-input { width: 100%; padding: 8px; border: 1px solid var(--border-color); border-radius: 4px; font-family: inherit; font-size: 0.9rem; }
.full-width-input:focus { border-color: var(--primary); outline: none; }

.property-row { margin-top: 10px; display: flex; align-items: center; gap: 8px; font-size: 0.8rem; }
.property-row label { width: 35px; color: var(--text-sub); }
.property-row input[type="range"] { flex: 1; cursor: pointer; }
.property-row span { width: 45px; text-align: right; color: var(--primary); font-weight: bold; }
#text-color-hex { width: 70px; border: none; background: transparent; color: var(--text-sub); font-family: monospace; }

.sidebar-footer { display: flex; flex-direction: column; gap: 8px; padding: 15px; border-top: 1px solid var(--border-color); }
.btn-main { border: none; border-radius: 6px; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 0.95rem; padding: 12px; transition: 0.2s; }
.btn-success { color: white; background-color: #16a34a; }
.btn-success:hover { background-color: #15803d; }
.btn-success:disabled { background-color: #ccc; cursor: not-allowed; }
.btn-danger { background: #fff; color: var(--danger); border: 1px solid var(--danger); }

.preview-container { 
    flex: 1; padding: 20px; overflow: auto; 
    background-color: #e5e5e5; display: flex;
    align-items: flex-start; justify-content: center;
}
#main-canvas { 
    max-width: none; max-height: none; 
    box-shadow: 0 10px 30px rgba(0,0,0,0.15); background: white;
}
.empty-state { text-align: center; cursor: pointer; color: var(--text-sub); margin-top: 20%; }
.icon-box { font-size: 50px; margin-bottom: 15px; }
.hidden { display: none !important; }
/* 添加蓝色按钮样式用于导出 */
.btn-blue {
    background: #fff;
    color: var(--primary);
    border: 1px solid var(--primary);
}
.btn-blue:hover {
    background: #eff6ff;
}

/* 调整生成小按钮的样式 */
.btn-small {
    border: 1px solid var(--border-color);
    background: white;
    color: var(--text-sub);
    border-radius: 4px;
    width: 40px;
    cursor: pointer;
    transition: 0.2s;
}
.btn-small:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}