:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --vip: #f59e0b;
    --error: #ef4444;
    --success: #22c55e;
    --bg-light: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --radius: 6px;
}
* { margin: 0; padding: 0; box-sizing: border-box; font-family: "Inter", sans-serif; }
body { background: var(--bg-light); color: var(--text-primary); padding: 20px; padding-top: 80px; }
.nav-bar {
    position: fixed; top: 0; left: 0; width: 100%;
    background: var(--card-bg); box-shadow: var(--shadow); padding: 12px 20px; z-index: 999;
}
.nav-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; }
.nav-btn-group a {
    text-decoration: none; color: var(--text-primary); padding: 8px 16px; margin-right: 8px;
    border-radius: var(--radius); transition: 0.2s;
}
.nav-btn-group a.active { background: var(--primary); color: white; }
.nav-btn-group a.vip { background: var(--vip); color: white; }
.page-container { max-width: 800px; margin: 0 auto; padding: 24px; }
.card {
    background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow);
    padding: 24px; margin-bottom: 20px;
}
.input-group { margin-bottom: 16px; position: relative; }
.input-group label { display: block; margin-bottom: 8px; font-weight: 500; }
.input-group input, .input-group select {
    width: 100%; padding: 12px; border: 1px solid #e2e8f0;
    border-radius: var(--radius); font-size: 16px;
}
.btn {
    padding: 12px 24px; border: none; border-radius: var(--radius);
    font-size: 16px; cursor: pointer; transition: 0.2s;
}
.btn-primary { background: var(--primary); color: white; }
.btn-vip { background: var(--vip); color: white; }
.btn-default { background: #e2e8f0; color: var(--text-primary); }
.toggle-pwd-btn {
    position: absolute; right: 12px; top: 38px; background: transparent;
    border: none; cursor: pointer; width: 20px; height: 20px;
}
.tab-group { display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap; }
.tab-btn {
    padding: 8px 16px; border: none; background: #e2e8f0;
    border-radius: var(--radius); cursor: pointer;
}
.tab-btn.active { background: var(--primary); color: white; }
.tab-content { display: none; }
.tab-content.active { display: block; }
.code-item, .package-item, .user-item {
    padding: 12px; border-bottom: 1px solid #e2e8f0;
    display: flex; justify-content: space-between; align-items: center;
}
.empty-tip { color: var(--text-secondary); padding: 20px; text-align: center; }
.tip { height: 24px; line-height: 24px; margin: 8px 0; font-size: 14px; }
.error-tip { color: var(--error); }
.success-tip { color: var(--success); }
.copy-toast {
    position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
    background: var(--success); color: white; padding: 12px 24px;
    border-radius: var(--radius); opacity: 0; pointer-events: none;
    transition: opacity 0.3s; z-index: 999;
}
.copy-toast.show { opacity: 1; }
.loading { display: none; align-items: center; gap: 8px; margin: 16px 0; }
.spinner {
    width: 20px; height: 20px; border: 3px solid #e2e8f0;
    border-top-color: var(--primary); border-radius: 50%; animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.adb-command {
    background: #f1f5f9;
    padding: 16px;
    border-radius: var(--radius);
    margin-top: 20px;
    font-family: monospace;
    white-space: pre-wrap;
}
.adb-title {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary-dark);
}
@media (max-width: 768px) {
    .nav-btn-group a { padding: 6px 12px; margin-right: 4px; }
    .page-container { padding: 12px; }
    .tab-group { flex-wrap: wrap; }
    .adb-command { font-size: 14px; }
}